Class DeleteClauseStateObject
- java.lang.Object
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- org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractStateObject
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- org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractModifyClauseStateObject
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- org.eclipse.persistence.jpa.jpql.tools.model.query.DeleteClauseStateObject
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- All Implemented Interfaces:
DeclarationStateObject,StateObject
public class DeleteClauseStateObject extends AbstractModifyClauseStateObject
This is theDELETEclause of theDELETEstatement.A
DELETEstatement provides bulk operations over sets of entities of a single entity class (together with its subclasses, if any). Only one entity abstract schema type may be specified in theUPDATEclause.BNF:delete_clause ::= DELETE FROM abstract_schema_name [[AS] identification_variable]- Version:
- 2.4
- See Also:
DeleteClause- Author:
- Pascal Filion
- Since:
- 2.4
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Constructor Summary
Constructors Constructor Description DeleteClauseStateObject(DeleteStatementStateObject parent)Creates a newDeleteClauseStateObject.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description voidaccept(StateObjectVisitor visitor)Visits thisStateObjectby the givenvisitor.DeleteClausegetExpression()Returns the actual parsed object if thisStateObjectrepresentation of the JPQL query was created by parsing an existing JPQL query.java.lang.StringgetIdentifier()Returns the JPQL identifier of this clause.DeleteStatementStateObjectgetParent()Returns the parent of thisStateObject.voidsetExpression(DeleteClause expression)Keeps a reference of theparsed objectobject, which should only be done when this object is instantiated during the conversion of a parsed JPQL query intoStateObjects.-
Methods inherited from class org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractModifyClauseStateObject
addChildren, declarations, findManagedType, getAbstractSchemaName, getAbstractSchemaNameStateObject, getDeclaration, getEntity, getIdentificationVariable, getIdentificationVariableStateObject, getManagedType, getRangeVariableDeclaration, hasIdentificationVariable, initialize, isEquivalent, setDeclaration, setDeclaration, setDeclaration, setDeclaration, setEntity, setEntityName, setIdentificationVariable, toTextInternal
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Methods inherited from class org.eclipse.persistence.jpa.jpql.tools.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
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Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
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Methods inherited from interface org.eclipse.persistence.jpa.jpql.tools.model.query.StateObject
addPropertyChangeListener, children, decorate, findIdentificationVariable, getDecorator, getGrammar, getManagedTypeProvider, getQueryBuilder, getRoot, isDecorated, removePropertyChangeListener, setParent, toString, toText
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Constructor Detail
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DeleteClauseStateObject
public DeleteClauseStateObject(DeleteStatementStateObject parent)
Creates a newDeleteClauseStateObject.- Parameters:
parent- The parent of this state object, which cannot benull- Throws:
java.lang.NullPointerException- The given parent cannot benull
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Method Detail
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accept
public void accept(StateObjectVisitor visitor)
Visits thisStateObjectby the givenvisitor.- Parameters:
visitor- Thevisitorto visit this object
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getExpression
public DeleteClause getExpression()
Returns the actual parsed object if thisStateObjectrepresentation of the JPQL query was created by parsing an existing JPQL query.- Specified by:
getExpressionin interfaceStateObject- Overrides:
getExpressionin classAbstractStateObject- Returns:
- The parsed object when a JPQL query is parsed and converted into a
StateObjectornullwhen the JPQL query is manually created (i.e. not from a string)
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getIdentifier
public java.lang.String getIdentifier()
Returns the JPQL identifier of this clause.- Specified by:
getIdentifierin classAbstractModifyClauseStateObject- Returns:
- The JPQL identifier
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getParent
public DeleteStatementStateObject getParent()
Returns the parent of thisStateObject.- Specified by:
getParentin interfaceStateObject- Overrides:
getParentin classAbstractModifyClauseStateObject- Returns:
- Returns the parent of this
StateObject, which isnullonly when this is the root of the hierarchy
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setExpression
public void setExpression(DeleteClause expression)
Keeps a reference of theparsed objectobject, which should only be done when this object is instantiated during the conversion of a parsed JPQL query intoStateObjects.- Parameters:
expression- Theparsed objectrepresenting aDELETEclause
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