org.ow2.jonas.lib.ejb21.sql
Class EjbqlVariableVisitor

java.lang.Object
  org.ow2.jonas.lib.ejb21.sql.EjbqlAbstractVisitor
      org.ow2.jonas.lib.ejb21.sql.EjbqlVariableVisitor

All Implemented Interfaces:

EJBQLVisitor

public class EjbqlVariableVisitor
extends EjbqlAbstractVisitor

Implementation of a visitor that creates a map of pairs [name,QueryTreeField] for all defined identifiers of the query.

Author:

Christophe Ney [cney@batisseurs.com] Initial developper, Helene Joanin:

• In the visit of the SELECT clause, do not forget to add the id in the ids structure if its not present. Indeed, the definition of this id is done in the FROM clause which is visited later. This is needed for ejbSelect query which allows path_expression in the SELECT clause.
• Use of the NavigatorNodeFactory.getIn() for IN in the FROM part instead of NavigatorNodeFactory.getNavigatorNode()
• Some modifications needed to take into account CollectionValuedPathExpression for the member of and is empty operators.
• For the MemberOf implementation, do not more build an unique QueryTree, but a Map of pairs [name,QueryTreeField]
• Add the ORDER BY clause.
• Take into account the new interface of NavigatorNodeFactory.
• IS EMPTY / IS NOT EMPTY
• Take into account the EJBQL version 2.1 syntax.

Nested Class Summary

Nested classes/interfaces inherited from class org.ow2.jonas.lib.ejb21.sql.EjbqlAbstractVisitor

EjbqlAbstractVisitor.IdValue, EjbqlAbstractVisitor.VisitorException

Constructor Summary

EjbqlVariableVisitor(ASTEJBQL ejbql, DeploymentDescEjb2 dd, org.objectweb.medor.query.jorm.lib.QueryBuilder qb, org.objectweb.jorm.metainfo.api.Manager mgr)
constructor

Method Summary

Map	getFields() get the Map that was built from visiting the lexical query tree This map allows to get the org.objectweb.medor.api.Field from its name (ident or path).
void	traceIds(HashMap idsM) Trace the given ids structure
Object	visit(ASTAbstractSchemaName node, Object data) Push the Node to the stack
Object	visit(ASTAggregateSelectExpression node, Object data) visit child nodes
Object	visit(ASTArithmeticExpression node, Object data) visit child nodes
Object	visit(ASTArithmeticFactor node, Object data) visit child nodes
Object	visit(ASTArithmeticTerm node, Object data) visit child nodes
Object	visit(ASTBetweenExpression node, Object data) visit child nodes
Object	visit(ASTBooleanExpression node, Object data) visit child nodes
Object	visit(ASTCmpPathExpression node, Object data) visit child nodes
Object	visit(ASTCollectionMemberDeclaration node, Object data) visit child nodes
Object	visit(ASTCollectionMemberExpression node, Object data) visit child nodes
Object	visit(ASTCollectionValuedPathExpression node, Object data) visit child nodes
Object	visit(ASTComparisonExpression node, Object data) visit child nodes
Object	visit(ASTConditionalExpression node, Object data) visit child nodes
Object	visit(ASTConditionalFactor node, Object data) Visit child nodes and count the number of the unary operator NOT.
Object	visit(ASTConditionalTerm node, Object data) visit child nodes
Object	visit(ASTDatetimeExpression node, Object data) visit child nodes
Object	visit(ASTEmptyCollectionComparisonExpression node, Object data) visit child nodes and see if it's IS EMPTY or IS NOT EMPTY
Object	visit(ASTEntityBeanExpression node, Object data) visit child nodes
Object	visit(ASTFromClause node, Object data) visit child nodes
Object	visit(ASTFunctionsReturningNumerics node, Object data) visit child nodes
Object	visit(ASTFunctionsReturningStrings node, Object data) visit child nodes
Object	visit(ASTIdentificationVariable node, Object data) visit child nodes
Object	visit(ASTIdentifier node, Object data) Store the pair identifier,Node from the Stack in HashMap
Object	visit(ASTInExpression node, Object data) visit child nodes
Object	visit(ASTLikeExpression node, Object data) visit child nodes
Object	visit(ASTNullComparisonExpression node, Object data) visit child nodes
Object	visit(ASTOrderByClause node, Object data) visit child nodes
Object	visit(ASTOrderByItem node, Object data) visit child nodes
Object	visit(ASTPath node, Object data) Push the Node to the stack
Object	visit(ASTRangeVariableDeclaration node, Object data) visit child nodes
Object	visit(ASTSelectClause node, Object data) visit child nodes
Object	visit(ASTSelectExpression node, Object data) visit child nodes
Object	visit(ASTSingleValuedCmrPathExpression node, Object data) visit child nodes
Object	visit(ASTSingleValuedPathExpression node, Object data) visit child nodes
Object	visit(ASTStringExpression node, Object data) visit child nodes
Object	visit(ASTWhereClause node, Object data) visit child nodes

Methods inherited from class org.ow2.jonas.lib.ejb21.sql.EjbqlAbstractVisitor

basePath, endsWith, mergePath, mergePath, splitPath, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

EjbqlVariableVisitor

public EjbqlVariableVisitor(ASTEJBQL ejbql,
                            DeploymentDescEjb2 dd,
                            org.objectweb.medor.query.jorm.lib.QueryBuilder qb,
                            org.objectweb.jorm.metainfo.api.Manager mgr)
                     throws Exception

constructor

Parameters:

ejbql - root of the lexical tree

dd - Deployment Descriptor

qb - query builder used to navigate paths

Throws:

Exception - when error parsing

Method Detail

getFields

public Map getFields()

get the Map that was built from visiting the lexical query tree This map allows to get the org.objectweb.medor.api.Field from its name (ident or path).

Returns:

the Fields map

traceIds

public void traceIds(HashMap idsM)

Trace the given ids structure

Parameters:

idsM - identifiocators Map

visit

public Object visit(ASTFromClause node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTCollectionMemberDeclaration node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTRangeVariableDeclaration node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTCollectionValuedPathExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTAbstractSchemaName node,
                    Object data)

Push the Node to the stack

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTIdentifier node,
                    Object data)

Store the pair identifier,Node from the Stack in HashMap

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTPath node,
                    Object data)

Push the Node to the stack

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTSelectClause node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTSelectExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTAggregateSelectExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTIdentificationVariable node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTSingleValuedPathExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTSingleValuedCmrPathExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTCmpPathExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTWhereClause node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTConditionalExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTConditionalTerm node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTConditionalFactor node,
                    Object data)

Visit child nodes and count the number of the unary operator NOT.

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTBetweenExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTInExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTLikeExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTNullComparisonExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTEmptyCollectionComparisonExpression node,
                    Object data)

visit child nodes and see if it's IS EMPTY or IS NOT EMPTY

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTCollectionMemberExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTComparisonExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTArithmeticExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTArithmeticTerm node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTArithmeticFactor node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTStringExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTDatetimeExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTBooleanExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTEntityBeanExpression node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTFunctionsReturningStrings node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTFunctionsReturningNumerics node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTOrderByClause node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack

visit

public Object visit(ASTOrderByItem node,
                    Object data)

visit child nodes

Specified by:

visit in interface EJBQLVisitor

Overrides:

visit in class EjbqlAbstractVisitor

Parameters:

node - the node to visit

data - the current stack

Returns:

the stack