Class DeleteClauseStateObject
java.lang.Object
org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractStateObject
org.eclipse.persistence.jpa.jpql.tools.model.query.AbstractModifyClauseStateObject
org.eclipse.persistence.jpa.jpql.tools.model.query.DeleteClauseStateObject
- All Implemented Interfaces:
DeclarationStateObject
,StateObject
This is the
DELETE
clause of the DELETE
statement.
A DELETE
statement 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 the UPDATE
clause.
BNF: delete_clause ::= DELETE FROM abstract_schema_name [[AS] identification_variable]
- Since:
- 2.4
- Version:
- 2.4
- See Also:
-
Constructor Summary
ConstructorDescriptionCreates a newDeleteClauseStateObject
. -
Method Summary
Modifier and TypeMethodDescriptionvoid
accept
(StateObjectVisitor visitor) Visits thisStateObject
by the givenvisitor
.Returns the actual parsed object if thisStateObject
representation of the JPQL query was created by parsing an existing JPQL query.Returns the JPQL identifier of this clause.Returns the parent of thisStateObject
.void
setExpression
(DeleteClause expression) Keeps a reference of theparsed object
object, 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
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
Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait
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 Details
-
DeleteClauseStateObject
Creates a newDeleteClauseStateObject
.- Parameters:
parent
- The parent of this state object, which cannot benull
- Throws:
NullPointerException
- The given parent cannot benull
-
-
Method Details
-
accept
Description copied from interface:StateObject
Visits thisStateObject
by the givenvisitor
.- Parameters:
visitor
- Thevisitor
to visit this object
-
getExpression
Description copied from interface:StateObject
Returns the actual parsed object if thisStateObject
representation of the JPQL query was created by parsing an existing JPQL query.- Specified by:
getExpression
in interfaceStateObject
- Overrides:
getExpression
in classAbstractStateObject
- Returns:
- The parsed object when a JPQL query is parsed and converted into a
StateObject
ornull
when the JPQL query is manually created (i.e. not from a string)
-
getIdentifier
Description copied from class:AbstractModifyClauseStateObject
Returns the JPQL identifier of this clause.- Specified by:
getIdentifier
in classAbstractModifyClauseStateObject
- Returns:
- The JPQL identifier
-
getParent
Description copied from interface:StateObject
Returns the parent of thisStateObject
.- Specified by:
getParent
in interfaceStateObject
- Overrides:
getParent
in classAbstractModifyClauseStateObject
- Returns:
- Returns the parent of this
StateObject
, which isnull
only when this is the root of the hierarchy
-
setExpression
Keeps a reference of theparsed object
object, which should only be done when this object is instantiated during the conversion of a parsed JPQL query intoStateObjects
.- Parameters:
expression
- Theparsed object
representing aDELETE
clause
-