org.eclipse.persistence.jpa.jpql.model.query
Class DeleteStatementStateObject

java.lang.Object
  org.eclipse.persistence.jpa.jpql.model.query.AbstractStateObject
      org.eclipse.persistence.jpa.jpql.model.query.AbstractModifyStatementStateObject
          org.eclipse.persistence.jpa.jpql.model.query.DeleteStatementStateObject

All Implemented Interfaces:

StateObject

public class DeleteStatementStateObject
extends AbstractModifyStatementStateObject

Bulk delete operation apply to entities of a single entity class (together with its subclasses, if any).

BNF: delete_statement ::= delete_clause [where_clause]

Version:

2.4

See Also:

DeleteStatement

Author:

Pascal Filion

Since:

2.4

Field Summary

Fields inherited from class org.eclipse.persistence.jpa.jpql.model.query.AbstractModifyStatementStateObject

WHERE_CLAUSE_PROPERTY

Constructor Summary

DeleteStatementStateObject(JPQLQueryStateObject parent)
Creates a new DeleteStatementStateObject.

Method Summary

void	accept(StateObjectVisitor visitor) Visits this StateObject by the given visitor.
protected AbstractModifyClauseStateObject	buildModifyClause() Creates the actual AbstractModifyClauseStateObject that represents the modify clause.
DeleteStatement	getExpression() Returns the actual parsed object if this StateObject representation of the JPQL query was created by parsing an existing JPQL query.
DeleteClauseStateObject	getModifyClause() Returns the state object representing the DELETE clause.
void	setExpression(DeleteStatement expression) Keeps a reference of the parsed object object, which should only be done when this object is instantiated during the conversion of a parsed JPQL query into StateObjects.

Methods inherited from class org.eclipse.persistence.jpa.jpql.model.query.AbstractModifyStatementStateObject

addChildren, addWhereClause, getAbstractSchemaName, getAbstractSchemaNameStateObject, getDeclaration, getEntity, getIdentificationVariable, getIdentificationVariableStateObject, getParent, getRangeVariableDeclaration, getWhereClause, hasWhereClause, initialize, isEquivalent, removeWhereClause, setConditionalStateObject, setDeclaration, setDeclaration, setDeclaration, setDeclaration, setEntity, setEntityName, setIdentificationVariable, toggleWhereClause, toTextInternal

Methods inherited from class org.eclipse.persistence.jpa.jpql.model.query.AbstractStateObject

acceptUnknownVisitor, acceptUnknownVisitor, addProblems, addPropertyChangeListener, areEquivalent, buildProblem, buildProblem, buildStateObject, buildStateObjects, checkParent, children, decorate, equals, findIdentificationVariable, firePropertyChanged, getChangeSupport, getDecorator, getGrammar, getManagedTypeProvider, getQueryBuilder, getRoot, getType, getType, getTypeHelper, getTypeRepository, hashCode, isDecorated, parent, parent, parent, removePropertyChangeListener, setExpression, setParent, toString, toString, toStringInternal, toStringItems, toText

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DeleteStatementStateObject

public DeleteStatementStateObject(JPQLQueryStateObject parent)

Creates a new DeleteStatementStateObject.

Parameters:

parent - The parent of this state object, which cannot be null

Throws:

java.lang.NullPointerException - The given parent cannot be null

Method Detail

accept

public void accept(StateObjectVisitor visitor)

Visits this StateObject by the given visitor.

Parameters:

visitor - The visitor to visit this object

buildModifyClause

protected AbstractModifyClauseStateObject buildModifyClause()

Creates the actual AbstractModifyClauseStateObject that represents the modify clause.

Specified by:

buildModifyClause in class AbstractModifyStatementStateObject

Returns:

The modify clause part of this modify statement

getExpression

public DeleteStatement getExpression()

Returns the actual parsed object if this StateObject representation of the JPQL query was created by parsing an existing JPQL query.

Specified by:

getExpression in interface StateObject

Overrides:

getExpression in class AbstractStateObject

Returns:

The parsed object when a JPQL query is parsed and converted into a StateObject or null when the JPQL query is manually created (i.e. not from a string)

getModifyClause

public DeleteClauseStateObject getModifyClause()

Returns the state object representing the DELETE clause.

Overrides:

getModifyClause in class AbstractModifyStatementStateObject

Returns:

The state object representing the DELETE clause, which is never null

setExpression

public void setExpression(DeleteStatement expression)

Keeps a reference of the parsed object object, which should only be done when this object is instantiated during the conversion of a parsed JPQL query into StateObjects.

Parameters:

expression - The parsed object representing a DELETE statement