org.ow2.jonas.resource.internal.cm.sql
Class PreparedStatementWrapper

java.lang.Object
  extended by org.ow2.jonas.resource.internal.cm.sql.PreparedStatementWrapper
All Implemented Interfaces:
PreparedStatement, Statement

public class PreparedStatementWrapper
extends Object
implements PreparedStatement

This class PreparedStatementWrapper wrap an SQL PreparedStatement

Author:
Eric HARDESTY

Field Summary
 
Fields inherited from interface java.sql.Statement
CLOSE_ALL_RESULTS, CLOSE_CURRENT_RESULT, EXECUTE_FAILED, KEEP_CURRENT_RESULT, NO_GENERATED_KEYS, RETURN_GENERATED_KEYS, SUCCESS_NO_INFO
 
Constructor Summary
PreparedStatementWrapper(String user, String sql, int[] columnIndexes, org.objectweb.util.monolog.api.Logger trace, boolean isDebugLogging)
          Creates a default PreparedStatementWrapper object capable of returning the auto-generated keys designated by the given array.
PreparedStatementWrapper(String user, String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability, org.objectweb.util.monolog.api.Logger trace, boolean isDebugLogging)
          Creates a PreparedStatementWrapper object that will generate ResultSet objects with the given type, concurrency, and holdability.
PreparedStatementWrapper(String user, String sql, int resultSetType, int resultSetConcurrency, org.objectweb.util.monolog.api.Logger trace, boolean isDebugLogging)
          Creates a PreparedStatementWrapper object that will generate ResultSet objects with the given type and concurrency.
PreparedStatementWrapper(String user, String sql, int autoGeneratedKeys, org.objectweb.util.monolog.api.Logger trace, boolean isDebugLogging)
          Creates a default PreparedStatementWrapper object that has the capability to retrieve auto-generated keys.
PreparedStatementWrapper(String user, String sql, String[] columnNames, org.objectweb.util.monolog.api.Logger trace, boolean isDebugLogging)
          Creates a default PreparedStatementWrapper object capable of returning the auto-generated keys designated by the given array.
 
Method Summary
 void addBatch()
          Adds a set of parameters to this PreparedStatement object's batch of commands.
 void addBatch(String s)
          Adds the given SQL command to the current list of commmands for this Statement object.
 void cancel()
          Cancels this Statement object if both the DBMS and driver support aborting an SQL statement.
 void checkIfValid()
          Checks that this object is not in invalid state
 void clearBatch()
          Empties this Statement object's current list of SQL commands.
 void clearParameters()
          Clears the current parameter values immediately.
 void clearPstmtValues()
          Clears the values stored in the preparement.
 void clearWarnings()
          Clears all the warnings reported on this Statement object.
 void close()
          Releases this Statement object's database and JDBC resources immediately instead of waiting for this to happen when it is automatically closed.
 void closePstmt()
          Close this object
 void destroy()
          Destroy this preparestatement object, then it becomes closed and invalid
 boolean equals(Object stmt)
           
 boolean execute()
          Executes the SQL statement in this PreparedStatement object, which may be any kind of SQL statement.
 boolean execute(String s)
          Executes the given SQL statement, which may return multiple results.
 boolean execute(String sql, int autoGeneratedKeys)
          Executes the given SQL statement, which may return multiple results, and signals the driver that any auto-generated keys should be made available for retrieval.
 boolean execute(String sql, int[] columnIndexes)
          Executes the given SQL statement, which may return multiple results, and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval.
 boolean execute(String sql, String[] columnNames)
          Executes the given SQL statement, which may return multiple results, and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval.
 int[] executeBatch()
          Submits a batch of commands to the database for execution and if all commands execute successfully, returns an array of update counts.
 ResultSet executeQuery()
          Executes the SQL query in this PreparedStatement object and returns the ResultSet object generated by the query.
 ResultSet executeQuery(String s)
          Executes the given SQL statement, which returns a single ResultSet object.
 int executeUpdate()
          Executes the SQL statement in this PreparedStatement object, which must be an SQL INSERT, UPDATE or DELETE statement; or an SQL statement that returns nothing, such as a DDL statement.
 int executeUpdate(String s)
          Executes the given SQL statement, which may be an INSERT, UPDATE, or DELETE statement or an SQL statement that returns nothing, such as an SQL DDL statement.
 int executeUpdate(String sql, int autoGeneratedKeys)
          Executes the given SQL statement and signals the driver with the given flag about whether the auto-generated keys produced by this Statement object should be made available for retrieval.
 int executeUpdate(String sql, int[] columnIndexes)
          Executes the given SQL statement and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval.
 int executeUpdate(String sql, String[] columnNames)
          Executes the given SQL statement and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval.
 Connection getConnection()
          Retrieves the Connection object that produced this Statement object.
 int getFetchDirection()
          Retrieves the direction for fetching rows from database tables that is the default for result sets generated from this Statement object.
 int getFetchSize()
          Retrieves the number of result set rows that is the default fetch size for ResultSet objects generated from this Statement object.
 ResultSet getGeneratedKeys()
          Retrieves any auto-generated keys created as a result of executing this Statement object.
 int getMaxFieldSize()
          Retrieves the maximum number of bytes that can be returned for character and binary column values in a ResultSet object produced by this Statement object.
 int getMaxRows()
          Retrieves the maximum number of rows that a ResultSet object produced by this Statement object can contain.
 ResultSetMetaData getMetaData()
          Retrieves a ResultSetMetaData object that contains information about the columns of the ResultSet object that will be returned when this PreparedStatement object is executed.
 boolean getMoreResults()
          Moves to this Statement object's next result, returns true if it is a ResultSet object, and implicitly closes any current ResultSet object(s) obtained with the method getResultSet.
 boolean getMoreResults(int current)
          Moves to this Statement object's next result, deals with any current ResultSet object(s) according to the instructions specified by the given flag, and returns true if the next result is a ResultSet object.
 ParameterMetaData getParameterMetaData()
          Retrieves the number, types and properties of this PreparedStatement object's parameters.
 int getQueryTimeout()
          Retrieves the number of seconds the driver will wait for a Statement object to execute.
 ResultSet getResultSet()
          Retrieves the current result as a ResultSet object.
 int getResultSetConcurrency()
          Retrieves the result set concurrency for ResultSet objects generated by this Statement object.
 int getResultSetHoldability()
          Retrieves the result set holdability for ResultSet objects generated by this Statement object.
 int getResultSetType()
          Retrieves the result set type for ResultSet objects generated by this Statement object.
 int getUpdateCount()
          Retrieves the current result as an update count; if the result is a ResultSet object or there are no more results, -1 is returned.
 SQLWarning getWarnings()
          Retrieves the first warning reported by calls on this Statement object.
 int hashCode()
           
 boolean isClosed()
           
 void setArray(int i, Array x)
          Sets the designated parameter to the given Array object.
 void setAsciiStream(int parameterIndex, InputStream x, int length)
          Sets the designated parameter to the given input stream, which will have the specified number of bytes.
 void setBigDecimal(int parameterIndex, BigDecimal x)
          Sets the designated parameter to the given java.math.BigDecimal value.
 void setBinaryStream(int parameterIndex, InputStream x, int length)
          Sets the designated parameter to the given input stream, which will have the specified number of bytes.
 void setBlob(int i, Blob x)
          Sets the designated parameter to the given Blob object.
 void setBoolean(int parameterIndex, boolean x)
          Sets the designated parameter to the given Java boolean value.
 void setByte(int parameterIndex, byte x)
          Sets the designated parameter to the given Java byte value.
 void setBytes(int parameterIndex, byte[] x)
          Sets the designated parameter to the given Java array of bytes.
 void setCharacterStream(int parameterIndex, Reader reader, int length)
          Sets the designated parameter to the given Reader object, which is the given number of characters long.
 void setClob(int i, Clob x)
          Sets the designated parameter to the given Clob object.
 void setClosed(boolean val)
          Close this object
 void setCursorName(String name)
          Sets the SQL cursor name to the given String, which will be used by subsequent Statement object execute methods.
 void setDate(int parameterIndex, Date x)
          Sets the designated parameter to the given java.sql.Date value.
 void setDate(int parameterIndex, Date x, Calendar cal)
          Sets the designated parameter to the given java.sql.Date value, using the given Calendar object.
 void setDouble(int parameterIndex, double x)
          Sets the designated parameter to the given Java double value.
 void setEscapeProcessing(boolean enable)
          Sets escape processing on or off.
 void setFetchDirection(int direction)
          Gives the driver a hint as to the direction in which rows will be processed in ResultSet objects created using this Statement object.
 void setFetchSize(int rows)
          Gives the JDBC driver a hint as to the number of rows that should be fetched from the database when more rows are needed.
 void setFloat(int parameterIndex, float x)
          Sets the designated parameter to the given Java float value.
 void setInt(int parameterIndex, int x)
          Sets the designated parameter to the given Java int value.
 void setLong(int parameterIndex, long x)
          Sets the designated parameter to the given Java long value.
 void setMaxFieldSize(int max)
          Sets the limit for the maximum number of bytes in a ResultSet column storing character or binary values to the given number of bytes.
 void setMaxRows(int max)
          Sets the limit for the maximum number of rows that any ResultSet object can contain to the given number.
 void setNull(int parameterIndex, int sqlType)
          Sets the designated parameter to SQL NULL.
 void setNull(int paramIndex, int sqlType, String typeName)
          Sets the designated parameter to SQL NULL.
 void setObject(int parameterIndex, Object x)
           Sets the value of the designated parameter using the given object.
 void setObject(int parameterIndex, Object x, int targetSqlType)
          Sets the value of the designated parameter with the given object.
 void setObject(int parameterIndex, Object x, int targetSqlType, int scale)
           Sets the value of the designated parameter with the given object.
 void setPreparedStatement(PreparedStatement pstmt)
          Sets the real prepared statement object on which we wrap calls
 void setQueryTimeout(int seconds)
          Sets the number of seconds the driver will wait for a Statement object to execute to the given number of seconds.
 void setRef(int i, Ref x)
          Sets the designated parameter to the given REF(<structured-type>) value.
 void setShort(int parameterIndex, short x)
          Sets the designated parameter to the given Java short value.
 void setString(int parameterIndex, String x)
          Sets the designated parameter to the given Java String value.
 void setTime(int parameterIndex, Time x)
          Sets the designated parameter to the given java.sql.Time value.
 void setTime(int parameterIndex, Time x, Calendar cal)
          Sets the designated parameter to the given java.sql.Time value, using the given Calendar object.
 void setTimestamp(int parameterIndex, Timestamp x)
          Sets the designated parameter to the given java.sql.Timestamp value.
 void setTimestamp(int parameterIndex, Timestamp x, Calendar cal)
          Sets the designated parameter to the given java.sql.Timestamp value, using the given Calendar object.
 void setUnicodeStream(int parameterIndex, InputStream x, int length)
          Deprecated.  
 void setURL(int parameterIndex, URL x)
          Sets the designated parameter to the given java.net.URL value.
 
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

PreparedStatementWrapper

public PreparedStatementWrapper(String user,
                                String sql,
                                int resultSetType,
                                int resultSetConcurrency,
                                org.objectweb.util.monolog.api.Logger trace,
                                boolean isDebugLogging)
Creates a PreparedStatementWrapper object that will generate ResultSet objects with the given type and concurrency. This method is the same as the prepareStatement method above, but it allows the default result set type and concurrency to be overridden.

Parameters:
user - the user used for accessing the connection
sql - a String object that is the SQL statement to be sent to the database; may contain one or more ? IN parameters
resultSetType - a result set type; one of ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE
resultSetConcurrency - a concurrency type; one of ResultSet.CONCUR_READ_ONLY or ResultSet.CONCUR_UPDATABLE
trace - the logger to use for logging purpose
isDebugLogging - if true, log the debug event in the logger
Since:
JDK 1.2

PreparedStatementWrapper

public PreparedStatementWrapper(String user,
                                String sql,
                                int resultSetType,
                                int resultSetConcurrency,
                                int resultSetHoldability,
                                org.objectweb.util.monolog.api.Logger trace,
                                boolean isDebugLogging)
Creates a PreparedStatementWrapper object that will generate ResultSet objects with the given type, concurrency, and holdability.

This method is the same as the prepareStatement method above, but it allows the default result set type, concurrency, and holdability to be overridden.

Parameters:
user - the user used for accessing the connection
sql - a String object that is the SQL statement to be sent to the database; may contain one or more ? IN parameters
resultSetType - one of the following ResultSet constants: ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE
resultSetConcurrency - one of the following ResultSet constants: ResultSet.CONCUR_READ_ONLY or ResultSet.CONCUR_UPDATABLE
resultSetHoldability - one of the following ResultSet constants: ResultSet.HOLD_CURSORS_OVER_COMMIT or ResultSet.CLOSE_CURSORS_AT_COMMIT
trace - the logger to use for logging purpose
isDebugLogging - if true, log the debug event in the logger
Since:
JDK 1.4

PreparedStatementWrapper

public PreparedStatementWrapper(String user,
                                String sql,
                                int autoGeneratedKeys,
                                org.objectweb.util.monolog.api.Logger trace,
                                boolean isDebugLogging)
Creates a default PreparedStatementWrapper object that has the capability to retrieve auto-generated keys. The given constant tells the driver whether it should make auto-generated keys available for retrieval. This parameter is ignored if the SQL statement is not an INSERT statement.

Parameters:
user - the user used for accessing the connection
sql - an SQL statement that may contain one or more '?' IN parameter placeholders
autoGeneratedKeys - a flag indicating whether auto-generated keys should be returned; one of Statement.RETURN_GENERATED_KEYS or Statement.NO_GENERATED_KEYS
trace - the logger to use for logging purpose
isDebugLogging - if true, log the debug event in the logger
Since:
JDK 1.4

PreparedStatementWrapper

public PreparedStatementWrapper(String user,
                                String sql,
                                int[] columnIndexes,
                                org.objectweb.util.monolog.api.Logger trace,
                                boolean isDebugLogging)
Creates a default PreparedStatementWrapper object capable of returning the auto-generated keys designated by the given array. This array contains the indexes of the columns in the target table that contain the auto-generated keys that should be made available. This array is ignored if the SQL statement is not an INSERT statement.

An SQL statement with or without IN parameters can be pre-compiled and stored in a PreparedStatement object. This object can then be used to efficiently execute this statement multiple times.

Parameters:
user - the user used for accessing the connection
sql - an SQL statement that may contain one or more '?' IN parameter placeholders
columnIndexes - an array of column indexes indicating the columns that should be returned from the inserted row or rows
trace - the logger to use for logging purpose
isDebugLogging - if true, log the debug event in the logger
Since:
JDK 1.4

PreparedStatementWrapper

public PreparedStatementWrapper(String user,
                                String sql,
                                String[] columnNames,
                                org.objectweb.util.monolog.api.Logger trace,
                                boolean isDebugLogging)
Creates a default PreparedStatementWrapper object capable of returning the auto-generated keys designated by the given array. This array contains the names of the columns in the target table that contain the auto-generated keys that should be returned. This array is ignored if the SQL statement is not an INSERT statement.

An SQL statement with or without IN parameters can be pre-compiled and stored in a PreparedStatement object. This object can then be used to efficiently execute this statement multiple times.

Parameters:
user - the user used for accessing the connection
sql - an SQL statement that may contain one or more '?' IN parameter placeholders
columnNames - an array of column names indicating the columns that should be returned from the inserted row or rows
trace - the logger to use for logging purpose
isDebugLogging - if true, log the debug event in the logger
Since:
JDK 1.4
Method Detail

checkIfValid

public void checkIfValid()
                  throws SQLException
Checks that this object is not in invalid state

Throws:
SQLException - if object is in invalid mode

clearPstmtValues

public void clearPstmtValues()
Clears the values stored in the preparement. This is required as this preparedstatement is reused


closePstmt

public void closePstmt()
                throws SQLException
Close this object

Throws:
SQLException - if object cannot be closed

destroy

public void destroy()
             throws SQLException
Destroy this preparestatement object, then it becomes closed and invalid

Throws:
SQLException - if it cannot be closed

equals

public boolean equals(Object stmt)
Overrides:
equals in class Object
Parameters:
stmt - given statement for comparing it
Returns:
true if given object is equals to this current object

setClosed

public void setClosed(boolean val)
Close this object

Parameters:
val - true/false

setPreparedStatement

public void setPreparedStatement(PreparedStatement pstmt)
Sets the real prepared statement object on which we wrap calls

Parameters:
pstmt - sql preparedstatement

addBatch

public void addBatch()
              throws SQLException
Adds a set of parameters to this PreparedStatement object's batch of commands.

Specified by:
addBatch in interface PreparedStatement
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
Statement#addBatch

clearParameters

public void clearParameters()
                     throws SQLException
Clears the current parameter values immediately.

In general, parameter values remain in force for repeated use of a statement. Setting a parameter value automatically clears its previous value. However, in some cases it is useful to immediately release the resources used by the current parameter values; this can be done by calling the method clearParameters.

Specified by:
clearParameters in interface PreparedStatement
Throws:
SQLException - if a database access error occurs

execute

public boolean execute()
                throws SQLException
Executes the SQL statement in this PreparedStatement object, which may be any kind of SQL statement. Some prepared statements return multiple results; the execute method handles these complex statements as well as the simpler form of statements handled by the methods executeQuery and executeUpdate.

The execute method returns a boolean to indicate the form of the first result. You must call either the method getResultSet or getUpdateCount to retrieve the result; you must call getMoreResults to move to any subsequent result(s).

Specified by:
execute in interface PreparedStatement
Returns:
true if the first result is a ResultSet object; false if the first result is an update count or there is no result
Throws:
SQLException - if a database access error occurs or an argument is supplied to this method
See Also:
Statement#execute, Statement#getResultSet, Statement#getUpdateCount, Statement#getMoreResults

execute

public boolean execute(String sql,
                       int autoGeneratedKeys)
                throws SQLException
Executes the given SQL statement, which may return multiple results, and signals the driver that any auto-generated keys should be made available for retrieval. The driver will ignore this signal if the SQL statement is not an INSERT statement.

In some (uncommon) situations, a single SQL statement may return multiple result sets and/or update counts. Normally you can ignore this unless you are (1) executing a stored procedure that you know may return multiple results or (2) you are dynamically executing an unknown SQL string.

The execute method executes an SQL statement and indicates the form of the first result. You must then use the methods getResultSet or getUpdateCount to retrieve the result, and getMoreResults to move to any subsequent result(s).

Specified by:
execute in interface Statement
Parameters:
sql - any SQL statement
autoGeneratedKeys - a constant indicating whether auto-generated keys should be made available for retrieval using the method getGeneratedKeys; one of the following constants: Statement.RETURN_GENERATED_KEYS or Statement.NO_GENERATED_KEYS
Returns:
true if the first result is a ResultSet object; false if it is an update count or there are no results
Throws:
SQLException - if a database access error occurs or the second parameter supplied to this method is not Statement.RETURN_GENERATED_KEYS or Statement.NO_GENERATED_KEYS.
Since:
1.4
See Also:
getResultSet(), getUpdateCount(), getMoreResults(int), getGeneratedKeys()

execute

public boolean execute(String sql,
                       int[] columnIndexes)
                throws SQLException
Executes the given SQL statement, which may return multiple results, and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval. This array contains the indexes of the columns in the target table that contain the auto-generated keys that should be made available. The driver will ignore the array if the given SQL statement is not an INSERT statement.

Under some (uncommon) situations, a single SQL statement may return multiple result sets and/or update counts. Normally you can ignore this unless you are (1) executing a stored procedure that you know may return multiple results or (2) you are dynamically executing an unknown SQL string.

The execute method executes an SQL statement and indicates the form of the first result. You must then use the methods getResultSet or getUpdateCount to retrieve the result, and getMoreResults to move to any subsequent result(s).

Specified by:
execute in interface Statement
Parameters:
sql - any SQL statement
columnIndexes - an array of the indexes of the columns in the inserted row that should be made available for retrieval by a call to the method getGeneratedKeys
Returns:
true if the first result is a ResultSet object; false if it is an update count or there are no results
Throws:
SQLException - if a database access error occurs or the elements in the int array passed to this method are not valid column indexes
Since:
1.4
See Also:
getResultSet(), getUpdateCount(), getMoreResults(int)

execute

public boolean execute(String sql,
                       String[] columnNames)
                throws SQLException
Executes the given SQL statement, which may return multiple results, and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval. This array contains the names of the columns in the target table that contain the auto-generated keys that should be made available. The driver will ignore the array if the given SQL statement is not an INSERT statement.

In some (uncommon) situations, a single SQL statement may return multiple result sets and/or update counts. Normally you can ignore this unless you are (1) executing a stored procedure that you know may return multiple results or (2) you are dynamically executing an unknown SQL string.

The execute method executes an SQL statement and indicates the form of the first result. You must then use the methods getResultSet or getUpdateCount to retrieve the result, and getMoreResults to move to any subsequent result(s).

Specified by:
execute in interface Statement
Parameters:
sql - any SQL statement
columnNames - an array of the names of the columns in the inserted row that should be made available for retrieval by a call to the method getGeneratedKeys
Returns:
true if the next result is a ResultSet object; false if it is an update count or there are no more results
Throws:
SQLException - if a database access error occurs or the elements of the String array passed to this method are not valid column names
Since:
1.4
See Also:
getResultSet(), getUpdateCount(), getMoreResults(int), getGeneratedKeys()

executeQuery

public ResultSet executeQuery()
                       throws SQLException
Executes the SQL query in this PreparedStatement object and returns the ResultSet object generated by the query.

Specified by:
executeQuery in interface PreparedStatement
Returns:
a ResultSet object that contains the data produced by the query; never null
Throws:
SQLException - if a database access error occurs or the SQL statement does not return a ResultSet object

executeUpdate

public int executeUpdate()
                  throws SQLException
Executes the SQL statement in this PreparedStatement object, which must be an SQL INSERT, UPDATE or DELETE statement; or an SQL statement that returns nothing, such as a DDL statement.

Specified by:
executeUpdate in interface PreparedStatement
Returns:
either (1) the row count for INSERT, UPDATE, or DELETE statements or (2) 0 for SQL statements that return nothing
Throws:
SQLException - if a database access error occurs or the SQL statement returns a ResultSet object

executeUpdate

public int executeUpdate(String sql,
                         int autoGeneratedKeys)
                  throws SQLException
Executes the given SQL statement and signals the driver with the given flag about whether the auto-generated keys produced by this Statement object should be made available for retrieval.

Specified by:
executeUpdate in interface Statement
Parameters:
sql - must be an SQL INSERT, UPDATE or DELETE statement or an SQL statement that returns nothing
autoGeneratedKeys - a flag indicating whether auto-generated keys should be made available for retrieval; one of the following constants: Statement.RETURN_GENERATED_KEYS Statement.NO_GENERATED_KEYS
Returns:
either the row count for INSERT, UPDATE or DELETE statements, or 0 for SQL statements that return nothing
Throws:
SQLException - if a database access error occurs, the given SQL statement returns a ResultSet object, or the given constant is not one of those allowed
Since:
1.4

executeUpdate

public int executeUpdate(String sql,
                         int[] columnIndexes)
                  throws SQLException
Executes the given SQL statement and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval. The driver will ignore the array if the SQL statement is not an INSERT statement.

Specified by:
executeUpdate in interface Statement
Parameters:
sql - an SQL INSERT, UPDATE or DELETE statement or an SQL statement that returns nothing, such as an SQL DDL statement
columnIndexes - an array of column indexes indicating the columns that should be returned from the inserted row
Returns:
either the row count for INSERT, UPDATE, or DELETE statements, or 0 for SQL statements that return nothing
Throws:
SQLException - if a database access error occurs, the SQL statement returns a ResultSet object, or the second argument supplied to this method is not an int array whose elements are valid column indexes
Since:
1.4

executeUpdate

public int executeUpdate(String sql,
                         String[] columnNames)
                  throws SQLException
Executes the given SQL statement and signals the driver that the auto-generated keys indicated in the given array should be made available for retrieval. The driver will ignore the array if the SQL statement is not an INSERT statement.

Specified by:
executeUpdate in interface Statement
Parameters:
sql - an SQL INSERT, UPDATE or DELETE statement or an SQL statement that returns nothing
columnNames - an array of the names of the columns that should be returned from the inserted row
Returns:
either the row count for INSERT, UPDATE, or DELETE statements, or 0 for SQL statements that return nothing
Throws:
SQLException - if a database access error occurs, the SQL statement returns a ResultSet object, or the second argument supplied to this method is not a String array whose elements are valid column names
Since:
1.4

getGeneratedKeys

public ResultSet getGeneratedKeys()
                           throws SQLException
Retrieves any auto-generated keys created as a result of executing this Statement object. If this Statement object did not generate any keys, an empty ResultSet object is returned.

Specified by:
getGeneratedKeys in interface Statement
Returns:
a ResultSet object containing the auto-generated key(s) generated by the execution of this Statement object
Throws:
SQLException - if a database access error occurs
Since:
1.4

getMetaData

public ResultSetMetaData getMetaData()
                              throws SQLException
Retrieves a ResultSetMetaData object that contains information about the columns of the ResultSet object that will be returned when this PreparedStatement object is executed.

Because a PreparedStatement object is precompiled, it is possible to know about the ResultSet object that it will return without having to execute it. Consequently, it is possible to invoke the method getMetaData on a PreparedStatement object rather than waiting to execute it and then invoking the ResultSet.getMetaData method on the ResultSet object that is returned.

NOTE: Using this method may be expensive for some drivers due to the lack of underlying DBMS support.

Specified by:
getMetaData in interface PreparedStatement
Returns:
the description of a ResultSet object's columns or null if the driver cannot return a ResultSetMetaData object
Throws:
SQLException - if a database access error occurs
Since:
1.2

getMoreResults

public boolean getMoreResults(int current)
                       throws SQLException
Moves to this Statement object's next result, deals with any current ResultSet object(s) according to the instructions specified by the given flag, and returns true if the next result is a ResultSet object.

There are no more results when the following is true:

 // stmt is a Statement object ((stmt.getMoreResults() == false) &&
 (stmt.getUpdateCount() == -1))

 

Specified by:
getMoreResults in interface Statement
Parameters:
current - one of the following Statement constants indicating what should happen to current ResultSet objects obtained using the method getResultSet: Statement.CLOSE_CURRENT_RESULT, Statement.KEEP_CURRENT_RESULT, or Statement.CLOSE_ALL_RESULTS
Returns:
true if the next result is a ResultSet object; false if it is an update count or there are no more results
Throws:
SQLException - if a database access error occurs or the argument supplied is not one of the following: Statement.CLOSE_CURRENT_RESULT, Statement.KEEP_CURRENT_RESULT, or Statement.CLOSE_ALL_RESULTS
Since:
1.4
See Also:
execute()

getParameterMetaData

public ParameterMetaData getParameterMetaData()
                                       throws SQLException
Retrieves the number, types and properties of this PreparedStatement object's parameters.

Specified by:
getParameterMetaData in interface PreparedStatement
Returns:
a ParameterMetaData object that contains information about the number, types and properties of this PreparedStatement object's parameters
Throws:
SQLException - if a database access error occurs
Since:
1.4
See Also:
ParameterMetaData

getResultSetHoldability

public int getResultSetHoldability()
                            throws SQLException
Retrieves the result set holdability for ResultSet objects generated by this Statement object.

Specified by:
getResultSetHoldability in interface Statement
Returns:
either ResultSet.HOLD_CURSORS_OVER_COMMIT or ResultSet.CLOSE_CURSORS_AT_COMMIT
Throws:
SQLException - if a database access error occurs
Since:
1.4

setArray

public void setArray(int i,
                     Array x)
              throws SQLException
Sets the designated parameter to the given Array object. The driver converts this to an SQL ARRAY value when it sends it to the database.

Specified by:
setArray in interface PreparedStatement
Parameters:
i - the first parameter is 1, the second is 2, ...
x - an Array object that maps an SQL ARRAY value
Throws:
SQLException - if a database access error occurs
Since:
1.2

setAsciiStream

public void setAsciiStream(int parameterIndex,
                           InputStream x,
                           int length)
                    throws SQLException
Sets the designated parameter to the given input stream, which will have the specified number of bytes. When a very large ASCII value is input to a LONGVARCHAR parameter, it may be more practical to send it via a java.io.InputStream. Data will be read from the stream as needed until end-of-file is reached. The JDBC driver will do any necessary conversion from ASCII to the database char format.

Note: This stream object can either be a standard Java stream object or your own subclass that implements the standard interface.

Specified by:
setAsciiStream in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the Java input stream that contains the ASCII parameter value
length - the number of bytes in the stream
Throws:
SQLException - if a database access error occurs

setBigDecimal

public void setBigDecimal(int parameterIndex,
                          BigDecimal x)
                   throws SQLException
Sets the designated parameter to the given java.math.BigDecimal value. The driver converts this to an SQL NUMERIC value when it sends it to the database.

Specified by:
setBigDecimal in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
Throws:
SQLException - if a database access error occurs

setBinaryStream

public void setBinaryStream(int parameterIndex,
                            InputStream x,
                            int length)
                     throws SQLException
Sets the designated parameter to the given input stream, which will have the specified number of bytes. When a very large binary value is input to a LONGVARBINARY parameter, it may be more practical to send it via a java.io.InputStream object. The data will be read from the stream as needed until end-of-file is reached.

Note: This stream object can either be a standard Java stream object or your own subclass that implements the standard interface.

Specified by:
setBinaryStream in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the java input stream which contains the binary parameter value
length - the number of bytes in the stream
Throws:
SQLException - if a database access error occurs

setBlob

public void setBlob(int i,
                    Blob x)
             throws SQLException
Sets the designated parameter to the given Blob object. The driver converts this to an SQL BLOB value when it sends it to the database.

Specified by:
setBlob in interface PreparedStatement
Parameters:
i - the first parameter is 1, the second is 2, ...
x - a Blob object that maps an SQL BLOB value
Throws:
SQLException - if a database access error occurs
Since:
1.2

setBoolean

public void setBoolean(int parameterIndex,
                       boolean x)
                throws SQLException
Sets the designated parameter to the given Java boolean value. The driver converts this to an SQL BIT value when it sends it to the database.

Specified by:
setBoolean in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
Throws:
SQLException - if a database access error occurs

setByte

public void setByte(int parameterIndex,
                    byte x)
             throws SQLException
Sets the designated parameter to the given Java byte value. The driver converts this to an SQL TINYINT value when it sends it to the database.

Specified by:
setByte in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
Throws:
SQLException - if a database access error occurs

setBytes

public void setBytes(int parameterIndex,
                     byte[] x)
              throws SQLException
Sets the designated parameter to the given Java array of bytes. The driver converts this to an SQL VARBINARY or LONGVARBINARY (depending on the argument's size relative to the driver's limits on VARBINARY values) when it sends it to the database.

Specified by:
setBytes in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
Throws:
SQLException - if a database access error occurs

setCharacterStream

public void setCharacterStream(int parameterIndex,
                               Reader reader,
                               int length)
                        throws SQLException
Sets the designated parameter to the given Reader object, which is the given number of characters long. When a very large UNICODE value is input to a LONGVARCHAR parameter, it may be more practical to send it via a java.io.Reader object. The data will be read from the stream as needed until end-of-file is reached. The JDBC driver will do any necessary conversion from UNICODE to the database char format.

Note: This stream object can either be a standard Java stream object or your own subclass that implements the standard interface.

Specified by:
setCharacterStream in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
reader - the java.io.Reader object that contains the Unicode data
length - the number of characters in the stream
Throws:
SQLException - if a database access error occurs
Since:
1.2

setClob

public void setClob(int i,
                    Clob x)
             throws SQLException
Sets the designated parameter to the given Clob object. The driver converts this to an SQL CLOB value when it sends it to the database.

Specified by:
setClob in interface PreparedStatement
Parameters:
i - the first parameter is 1, the second is 2, ...
x - a Clob object that maps an SQL CLOB value
Throws:
SQLException - if a database access error occurs
Since:
1.2

setDate

public void setDate(int parameterIndex,
                    Date x)
             throws SQLException
Sets the designated parameter to the given java.sql.Date value. The driver converts this to an SQL DATE value when it sends it to the database.

Specified by:
setDate in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
Throws:
SQLException - if a database access error occurs

setDate

public void setDate(int parameterIndex,
                    Date x,
                    Calendar cal)
             throws SQLException
Sets the designated parameter to the given java.sql.Date value, using the given Calendar object. The driver uses the Calendar object to construct an SQL DATE value, which the driver then sends to the database. With a Calendar object, the driver can calculate the date taking into account a custom timezone. If no Calendar object is specified, the driver uses the default timezone, which is that of the virtual machine running the application.

Specified by:
setDate in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
cal - the Calendar object the driver will use to construct the date
Throws:
SQLException - if a database access error occurs
Since:
1.2

setDouble

public void setDouble(int parameterIndex,
                      double x)
               throws SQLException
Sets the designated parameter to the given Java double value. The driver converts this to an SQL DOUBLE value when it sends it to the database.

Specified by:
setDouble in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
Throws:
SQLException - if a database access error occurs

setFloat

public void setFloat(int parameterIndex,
                     float x)
              throws SQLException
Sets the designated parameter to the given Java float value. The driver converts this to an SQL FLOAT value when it sends it to the database.

Specified by:
setFloat in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
Throws:
SQLException - if a database access error occurs

setInt

public void setInt(int parameterIndex,
                   int x)
            throws SQLException
Sets the designated parameter to the given Java int value. The driver converts this to an SQL INTEGER value when it sends it to the database.

Specified by:
setInt in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
Throws:
SQLException - if a database access error occurs

setLong

public void setLong(int parameterIndex,
                    long x)
             throws SQLException
Sets the designated parameter to the given Java long value. The driver converts this to an SQL BIGINT value when it sends it to the database.

Specified by:
setLong in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
Throws:
SQLException - if a database access error occurs

setNull

public void setNull(int parameterIndex,
                    int sqlType)
             throws SQLException
Sets the designated parameter to SQL NULL.

Note: You must specify the parameter's SQL type.

Specified by:
setNull in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
sqlType - the SQL type code defined in java.sql.Types
Throws:
SQLException - if a database access error occurs

setNull

public void setNull(int paramIndex,
                    int sqlType,
                    String typeName)
             throws SQLException
Sets the designated parameter to SQL NULL. This version of the method setNull should be used for user-defined types and REF type parameters. Examples of user-defined types include: STRUCT, DISTINCT, JAVA_OBJECT, and named array types.

Note: To be portable, applications must give the SQL type code and the fully-qualified SQL type name when specifying a NULL user-defined or REF parameter. In the case of a user-defined type the name is the type name of the parameter itself. For a REF parameter, the name is the type name of the referenced type. If a JDBC driver does not need the type code or type name information, it may ignore it. Although it is intended for user-defined and Ref parameters, this method may be used to set a null parameter of any JDBC type. If the parameter does not have a user-defined or REF type, the given typeName is ignored.

Specified by:
setNull in interface PreparedStatement
Parameters:
paramIndex - the first parameter is 1, the second is 2, ...
sqlType - a value from java.sql.Types
typeName - the fully-qualified name of an SQL user-defined type; ignored if the parameter is not a user-defined type or REF
Throws:
SQLException - if a database access error occurs
Since:
1.2

setObject

public void setObject(int parameterIndex,
                      Object x)
               throws SQLException

Sets the value of the designated parameter using the given object. The second parameter must be of type Object; therefore, the java.lang equivalent objects should be used for built-in types.

The JDBC specification specifies a standard mapping from Java Object types to SQL types. The given argument will be converted to the corresponding SQL type before being sent to the database.

Note that this method may be used to pass datatabase- specific abstract data types, by using a driver-specific Java type. If the object is of a class implementing the interface SQLData, the JDBC driver should call the method SQLData.writeSQL to write it to the SQL data stream. If, on the other hand, the object is of a class implementing Ref, Blob, Clob, Struct, or Array, the driver should pass it to the database as a value of the corresponding SQL type.

This method throws an exception if there is an ambiguity, for example, if the object is of a class implementing more than one of the interfaces named above.

Specified by:
setObject in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the object containing the input parameter value
Throws:
SQLException - if a database access error occurs or the type of the given object is ambiguous

setObject

public void setObject(int parameterIndex,
                      Object x,
                      int targetSqlType)
               throws SQLException
Sets the value of the designated parameter with the given object. This method is like the method setObject above, except that it assumes a scale of zero.

Specified by:
setObject in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the object containing the input parameter value
targetSqlType - the SQL type (as defined in java.sql.Types) to be sent to the database
Throws:
SQLException - if a database access error occurs

setObject

public void setObject(int parameterIndex,
                      Object x,
                      int targetSqlType,
                      int scale)
               throws SQLException

Sets the value of the designated parameter with the given object. The second argument must be an object type; for integral values, the java.lang equivalent objects should be used.

The given Java object will be converted to the given targetSqlType before being sent to the database. If the object has a custom mapping (is of a class implementing the interface SQLData), the JDBC driver should call the method SQLData.writeSQL to write it to the SQL data stream. If, on the other hand, the object is of a class implementing Ref, Blob, Clob, Struct, or Array, the driver should pass it to the database as a value of the corresponding SQL type.

Note that this method may be used to pass database-specific abstract data types.

Specified by:
setObject in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the object containing the input parameter value
targetSqlType - the SQL type (as defined in java.sql.Types) to be sent to the database. The scale argument may further qualify this type.
scale - for java.sql.Types.DECIMAL or java.sql.Types.NUMERIC types, this is the number of digits after the decimal point. For all other types, this value will be ignored.
Throws:
SQLException - if a database access error occurs
See Also:
Types

setRef

public void setRef(int i,
                   Ref x)
            throws SQLException
Sets the designated parameter to the given REF(<structured-type>) value. The driver converts this to an SQL REF value when it sends it to the database.

Specified by:
setRef in interface PreparedStatement
Parameters:
i - the first parameter is 1, the second is 2, ...
x - an SQL REF value
Throws:
SQLException - if a database access error occurs
Since:
1.2

setShort

public void setShort(int parameterIndex,
                     short x)
              throws SQLException
Sets the designated parameter to the given Java short value. The driver converts this to an SQL SMALLINT value when it sends it to the database.

Specified by:
setShort in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
Throws:
SQLException - if a database access error occurs

setString

public void setString(int parameterIndex,
                      String x)
               throws SQLException
Sets the designated parameter to the given Java String value. The driver converts this to an SQL VARCHAR or LONGVARCHAR value (depending on the argument's size relative to the driver's limits on VARCHAR values) when it sends it to the database.

Specified by:
setString in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
Throws:
SQLException - if a database access error occurs

setTime

public void setTime(int parameterIndex,
                    Time x)
             throws SQLException
Sets the designated parameter to the given java.sql.Time value. The driver converts this to an SQL TIME value when it sends it to the database.

Specified by:
setTime in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
Throws:
SQLException - if a database access error occurs

setTime

public void setTime(int parameterIndex,
                    Time x,
                    Calendar cal)
             throws SQLException
Sets the designated parameter to the given java.sql.Time value, using the given Calendar object. The driver uses the Calendar object to construct an SQL TIME value, which the driver then sends to the database. With a Calendar object, the driver can calculate the time taking into account a custom timezone. If no Calendar object is specified, the driver uses the default timezone, which is that of the virtual machine running the application.

Specified by:
setTime in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
cal - the Calendar object the driver will use to construct the time
Throws:
SQLException - if a database access error occurs
Since:
1.2

setTimestamp

public void setTimestamp(int parameterIndex,
                         Timestamp x)
                  throws SQLException
Sets the designated parameter to the given java.sql.Timestamp value. The driver converts this to an SQL TIMESTAMP value when it sends it to the database.

Specified by:
setTimestamp in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
Throws:
SQLException - if a database access error occurs

setTimestamp

public void setTimestamp(int parameterIndex,
                         Timestamp x,
                         Calendar cal)
                  throws SQLException
Sets the designated parameter to the given java.sql.Timestamp value, using the given Calendar object. The driver uses the Calendar object to construct an SQL TIMESTAMP value, which the driver then sends to the database. With a Calendar object, the driver can calculate the timestamp taking into account a custom timezone. If no Calendar object is specified, the driver uses the default timezone, which is that of the virtual machine running the application.

Specified by:
setTimestamp in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the parameter value
cal - the Calendar object the driver will use to construct the timestamp
Throws:
SQLException - if a database access error occurs
Since:
1.2

setUnicodeStream

public void setUnicodeStream(int parameterIndex,
                             InputStream x,
                             int length)
                      throws SQLException
Deprecated. 

Sets the designated parameter to the given input stream, which will have the specified number of bytes. A Unicode character has two bytes, with the first byte being the high byte, and the second being the low byte. When a very large Unicode value is input to a LONGVARCHAR parameter, it may be more practical to send it via a java.io.InputStream object. The data will be read from the stream as needed until end-of-file is reached. The JDBC driver will do any necessary conversion from Unicode to the database char format.

Note: This stream object can either be a standard Java stream object or your own subclass that implements the standard interface.

Specified by:
setUnicodeStream in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - a java.io.InputStream object that contains the Unicode parameter value as two-byte Unicode characters
length - the number of bytes in the stream
Throws:
SQLException - if a database access error occurs

addBatch

public void addBatch(String s)
              throws SQLException
Adds the given SQL command to the current list of commmands for this Statement object. The commands in this list can be executed as a batch by calling the method executeBatch.

NOTE: This method is optional.

Specified by:
addBatch in interface Statement
Parameters:
s - typically this is a static SQL INSERT or UPDATE statement
Throws:
SQLException - if a database access error occurs, or the driver does not support batch updates
Since:
1.2
See Also:
executeBatch()

cancel

public void cancel()
            throws SQLException
Cancels this Statement object if both the DBMS and driver support aborting an SQL statement. This method can be used by one thread to cancel a statement that is being executed by another thread.

Specified by:
cancel in interface Statement
Throws:
SQLException - if a database access error occurs

clearBatch

public void clearBatch()
                throws SQLException
Empties this Statement object's current list of SQL commands.

NOTE: This method is optional.

Specified by:
clearBatch in interface Statement
Throws:
SQLException - if a database access error occurs or the driver does not support batch updates
Since:
1.2
See Also:
addBatch()

clearWarnings

public void clearWarnings()
                   throws SQLException
Clears all the warnings reported on this Statement object. After a call to this method, the method getWarnings will return null until a new warning is reported for this Statement object.

Specified by:
clearWarnings in interface Statement
Throws:
SQLException - if a database access error occurs

close

public void close()
           throws SQLException
Releases this Statement object's database and JDBC resources immediately instead of waiting for this to happen when it is automatically closed. It is generally good practice to release resources as soon as you are finished with them to avoid tying up database resources.

Calling the method close on a Statement object that is already closed has no effect.

Note: A Statement object is automatically closed when it is garbage collected. When a Statement object is closed, its current ResultSet object, if one exists, is also closed.

Specified by:
close in interface Statement
Throws:
SQLException - if a database access error occurs

execute

public boolean execute(String s)
                throws SQLException
Executes the given SQL statement, which may return multiple results. In some (uncommon) situations, a single SQL statement may return multiple result sets and/or update counts. Normally you can ignore this unless you are (1) executing a stored procedure that you know may return multiple results or (2) you are dynamically executing an unknown SQL string.

The execute method executes an SQL statement and indicates the form of the first result. You must then use the methods getResultSet or getUpdateCount to retrieve the result, and getMoreResults to move to any subsequent result(s).

Specified by:
execute in interface Statement
Parameters:
s - any SQL statement
Returns:
true if the first result is a ResultSet object; false if it is an update count or there are no results
Throws:
SQLException - if a database access error occurs
See Also:
getResultSet(), getUpdateCount(), getMoreResults(int)

executeBatch

public int[] executeBatch()
                   throws SQLException
Submits a batch of commands to the database for execution and if all commands execute successfully, returns an array of update counts. The int elements of the array that is returned are ordered to correspond to the commands in the batch, which are ordered according to the order in which they were added to the batch. The elements in the array returned by the method executeBatch may be one of the following:
  1. A number greater than or equal to zero -- indicates that the command was processed successfully and is an update count giving the number of rows in the database that were affected by the command's execution
  2. A value of SUCCESS_NO_INFO -- indicates that the command was processed successfully but that the number of rows affected is unknown

    If one of the commands in a batch update fails to execute properly, this method throws a BatchUpdateException, and a JDBC driver may or may not continue to process the remaining commands in the batch. However, the driver's behavior must be consistent with a particular DBMS, either always continuing to process commands or never continuing to process commands. If the driver continues processing after a failure, the array returned by the method BatchUpdateException.getUpdateCounts will contain as many elements as there are commands in the batch, and at least one of the elements will be the following:

  3. A value of EXECUTE_FAILED -- indicates that the command failed to execute successfully and occurs only if a driver continues to process commands after a command fails

A driver is not required to implement this method. The possible implementations and return values have been modified in the Java 2 SDK, Standard Edition, version 1.3 to accommodate the option of continuing to proccess commands in a batch update after a BatchUpdateException obejct has been thrown.

Specified by:
executeBatch in interface Statement
Returns:
an array of update counts containing one element for each command in the batch. The elements of the array are ordered according to the order in which commands were added to the batch.
Throws:
SQLException - if a database access error occurs or the driver does not support batch statements. Throws BatchUpdateException (a subclass of SQLException) if one of the commands sent to the database fails to execute properly or attempts to return a result set.
Since:
1.3

executeQuery

public ResultSet executeQuery(String s)
                       throws SQLException
Executes the given SQL statement, which returns a single ResultSet object.

Specified by:
executeQuery in interface Statement
Parameters:
s - an SQL statement to be sent to the database, typically a static SQL SELECT statement
Returns:
a ResultSet object that contains the data produced by the given query; never null
Throws:
SQLException - if a database access error occurs or the given SQL statement produces anything other than a single ResultSet object

executeUpdate

public int executeUpdate(String s)
                  throws SQLException
Executes the given SQL statement, which may be an INSERT, UPDATE, or DELETE statement or an SQL statement that returns nothing, such as an SQL DDL statement.

Specified by:
executeUpdate in interface Statement
Parameters:
s - an SQL INSERT, UPDATE or DELETE statement or an SQL statement that returns nothing
Returns:
either the row count for INSERT, UPDATE or DELETE statements, or 0 for SQL statements that return nothing
Throws:
SQLException - if a database access error occurs or the given SQL statement produces a ResultSet object

getConnection

public Connection getConnection()
                         throws SQLException
Retrieves the Connection object that produced this Statement object.

Specified by:
getConnection in interface Statement
Returns:
the connection that produced this statement
Throws:
SQLException - if a database access error occurs
Since:
1.2

getFetchDirection

public int getFetchDirection()
                      throws SQLException
Retrieves the direction for fetching rows from database tables that is the default for result sets generated from this Statement object. If this Statement object has not set a fetch direction by calling the method setFetchDirection, the return value is implementation-specific.

Specified by:
getFetchDirection in interface Statement
Returns:
the default fetch direction for result sets generated from this Statement object
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
setFetchDirection(int)

getFetchSize

public int getFetchSize()
                 throws SQLException
Retrieves the number of result set rows that is the default fetch size for ResultSet objects generated from this Statement object. If this Statement object has not set a fetch size by calling the method setFetchSize, the return value is implementation-specific.

Specified by:
getFetchSize in interface Statement
Returns:
the default fetch size for result sets generated from this Statement object
Throws:
SQLException - if a database access error occurs
Since:
1.2
See Also:
setFetchSize(int)

getMaxFieldSize

public int getMaxFieldSize()
                    throws SQLException
Retrieves the maximum number of bytes that can be returned for character and binary column values in a ResultSet object produced by this Statement object. This limit applies only to BINARY, VARBINARY, LONGVARBINARY, CHAR, VARCHAR, and LONGVARCHAR columns. If the limit is exceeded, the excess data is silently discarded.

Specified by:
getMaxFieldSize in interface Statement
Returns:
the current column size limit for columns storing character and binary values; zero means there is no limit
Throws:
SQLException - if a database access error occurs
See Also:
setMaxFieldSize(int)

getMaxRows

public int getMaxRows()
               throws SQLException
Retrieves the maximum number of rows that a ResultSet object produced by this Statement object can contain. If this limit is exceeded, the excess rows are silently dropped.

Specified by:
getMaxRows in interface Statement
Returns:
the current maximum number of rows for a ResultSet object produced by this Statement object; zero means there is no limit
Throws:
SQLException - if a database access error occurs
See Also:
setMaxRows(int)

getMoreResults

public boolean getMoreResults()
                       throws SQLException
Moves to this Statement object's next result, returns true if it is a ResultSet object, and implicitly closes any current ResultSet object(s) obtained with the method getResultSet.

There are no more results when the following is true:

 // stmt is a Statement object ((stmt.getMoreResults() == false) &&
 (stmt.getUpdateCount() == -1))

 

Specified by:
getMoreResults in interface Statement
Returns:
true if the next result is a ResultSet object; false if it is an update count or there are no more results
Throws:
SQLException - if a database access error occurs
See Also:
execute()

getQueryTimeout

public int getQueryTimeout()
                    throws SQLException
Retrieves the number of seconds the driver will wait for a Statement object to execute. If the limit is exceeded, a SQLException is thrown.

Specified by:
getQueryTimeout in interface Statement
Returns:
the current query timeout limit in seconds; zero means there is no limit
Throws:
SQLException - if a database access error occurs
See Also:
setQueryTimeout(int)

getResultSet

public ResultSet getResultSet()
                       throws SQLException
Retrieves the current result as a ResultSet object. This method should be called only once per result.

Specified by:
getResultSet in interface Statement
Returns:
the current result as a ResultSet object or null if the result is an update count or there are no more results
Throws:
SQLException - if a database access error occurs
See Also:
execute()

getResultSetConcurrency

public int getResultSetConcurrency()
                            throws SQLException
Retrieves the result set concurrency for ResultSet objects generated by this Statement object.

Specified by:
getResultSetConcurrency in interface Statement
Returns:
either ResultSet.CONCUR_READ_ONLY or ResultSet.CONCUR_UPDATABLE
Throws:
SQLException - if a database access error occurs
Since:
1.2

getResultSetType

public int getResultSetType()
                     throws SQLException
Retrieves the result set type for ResultSet objects generated by this Statement object.

Specified by:
getResultSetType in interface Statement
Returns:
one of ResultSet.TYPE_FORWARD_ONLY, ResultSet.TYPE_SCROLL_INSENSITIVE, or ResultSet.TYPE_SCROLL_SENSITIVE
Throws:
SQLException - if a database access error occurs
Since:
1.2

getUpdateCount

public int getUpdateCount()
                   throws SQLException
Retrieves the current result as an update count; if the result is a ResultSet object or there are no more results, -1 is returned. This method should be called only once per result.

Specified by:
getUpdateCount in interface Statement
Returns:
the current result as an update count; -1 if the current result is a ResultSet object or there are no more results
Throws:
SQLException - if a database access error occurs
See Also:
execute()

getWarnings

public SQLWarning getWarnings()
                       throws SQLException
Retrieves the first warning reported by calls on this Statement object. Subsequent Statement object warnings will be chained to this SQLWarning object.

The warning chain is automatically cleared each time a statement is (re)executed. This method may not be called on a closed Statement object; doing so will cause an SQLException to be thrown.

Note: If you are processing a ResultSet object, any warnings associated with reads on that ResultSet object will be chained on it rather than on the Statement object that produced it.

Specified by:
getWarnings in interface Statement
Returns:
the first SQLWarning object or null if there are no warnings
Throws:
SQLException - if a database access error occurs or this method is called on a closed statement

setCursorName

public void setCursorName(String name)
                   throws SQLException
Sets the SQL cursor name to the given String, which will be used by subsequent Statement object execute methods. This name can then be used in SQL positioned update or delete statements to identify the current row in the ResultSet object generated by this statement. If the database does not support positioned update/delete, this method is a noop. To insure that a cursor has the proper isolation level to support updates, the cursor's SELECT statement should have the form SELECT FOR UPDATE. If FOR UPDATE is not present, positioned updates may fail.

Note: By definition, the execution of positioned updates and deletes must be done by a different Statement object than the one that generated the ResultSet object being used for positioning. Also, cursor names must be unique within a connection.

Specified by:
setCursorName in interface Statement
Parameters:
name - the new cursor name, which must be unique within a connection
Throws:
SQLException - if a database access error occurs

setEscapeProcessing

public void setEscapeProcessing(boolean enable)
                         throws SQLException
Sets escape processing on or off. If escape scanning is on (the default), the driver will do escape substitution before sending the SQL statement to the database. Note: Since prepared statements have usually been parsed prior to making this call, disabling escape processing for PreparedStatements objects will have no effect.

Specified by:
setEscapeProcessing in interface Statement
Parameters:
enable - true to enable escape processing; false to disable it
Throws:
SQLException - if a database access error occurs

setFetchDirection

public void setFetchDirection(int direction)
                       throws SQLException
Gives the driver a hint as to the direction in which rows will be processed in ResultSet objects created using this Statement object. The default value is ResultSet.FETCH_FORWARD.

Note that this method sets the default fetch direction for result sets generated by this Statement object. Each result set has its own methods for getting and setting its own fetch direction.

Specified by:
setFetchDirection in interface Statement
Parameters:
direction - the initial direction for processing rows
Throws:
SQLException - if a database access error occurs or the given direction is not one of ResultSet.FETCH_FORWARD, ResultSet.FETCH_REVERSE, or ResultSet.FETCH_UNKNOWN
Since:
1.2
See Also:
getFetchDirection()

setFetchSize

public void setFetchSize(int rows)
                  throws SQLException
Gives the JDBC driver a hint as to the number of rows that should be fetched from the database when more rows are needed. The number of rows specified affects only result sets created using this statement. If the value specified is zero, then the hint is ignored. The default value is zero.

Specified by:
setFetchSize in interface Statement
Parameters:
rows - the number of rows to fetch
Throws:
SQLException - if a database access error occurs, or the condition 0 <= rows <= this.getMaxRows() is not satisfied.
Since:
1.2
See Also:
getFetchSize()

setMaxFieldSize

public void setMaxFieldSize(int max)
                     throws SQLException
Sets the limit for the maximum number of bytes in a ResultSet column storing character or binary values to the given number of bytes. This limit applies only to BINARY, VARBINARY, LONGVARBINARY, CHAR, VARCHAR, and LONGVARCHAR fields. If the limit is exceeded, the excess data is silently discarded. For maximum portability, use values greater than 256.

Specified by:
setMaxFieldSize in interface Statement
Parameters:
max - the new column size limit in bytes; zero means there is no limit
Throws:
SQLException - if a database access error occurs or the condition max >= 0 is not satisfied
See Also:
getMaxFieldSize()

setMaxRows

public void setMaxRows(int max)
                throws SQLException
Sets the limit for the maximum number of rows that any ResultSet object can contain to the given number. If the limit is exceeded, the excess rows are silently dropped.

Specified by:
setMaxRows in interface Statement
Parameters:
max - the new max rows limit; zero means there is no limit
Throws:
SQLException - if a database access error occurs or the condition max >= 0 is not satisfied
See Also:
getMaxRows()

setQueryTimeout

public void setQueryTimeout(int seconds)
                     throws SQLException
Sets the number of seconds the driver will wait for a Statement object to execute to the given number of seconds. If the limit is exceeded, an SQLException is thrown.

Specified by:
setQueryTimeout in interface Statement
Parameters:
seconds - the new query timeout limit in seconds; zero means there is no limit
Throws:
SQLException - if a database access error occurs or the condition seconds >= 0 is not satisfied
See Also:
getQueryTimeout()

setURL

public void setURL(int parameterIndex,
                   URL x)
            throws SQLException
Sets the designated parameter to the given java.net.URL value. The driver converts this to an SQL DATALINK value when it sends it to the database.

Specified by:
setURL in interface PreparedStatement
Parameters:
parameterIndex - the first parameter is 1, the second is 2, ...
x - the java.net.URL object to be set
Throws:
SQLException - if a database access error occurs
Since:
1.4

hashCode

public int hashCode()
Overrides:
hashCode in class Object
Returns:
hashcode of the object

isClosed

public boolean isClosed()
Returns:
true if statement has been closed


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