org.eclipse.persistence.jpa.jpql
Class TreatResolver

java.lang.Object
  org.eclipse.persistence.jpa.jpql.Resolver
      org.eclipse.persistence.jpa.jpql.TreatResolver

public class TreatResolver
extends Resolver

This Resolver resolves a path and casts it as another entity type.

Version:

2.4

Author:

Pascal Filion

Since:

2.3

Constructor Summary

TreatResolver(Resolver parent, java.lang.String entityTypeName)
Creates a new TreatResolver.

Method Summary

void	accept(ResolverVisitor visitor) Visits this Resolver by the given visitor.
protected ITypeDeclaration	buildTypeDeclaration() Resolves the ITypeDeclaration of the property handled by this Resolver.
java.lang.String	getEntityTypeName() Returns the entity type name used to downcast the path expression.
IManagedType	getManagedType() Returns the IManagedType associated with the field handled by this Resolver.
void	setNullAllowed(boolean nullAllowed) Sets whether the Expression to be created, which wraps the attribute or query key name allows the target of the 1:1 relationship to be null if there is no corresponding relationship in the database.
java.lang.String	toString()

Methods inherited from class org.eclipse.persistence.jpa.jpql.Resolver

addChild, buildType, checkParent, getChild, getMapping, getParent, getParentManagedType, getParentMapping, getParentType, getParentTypeDeclaration, getProvider, getQuery, getType, getType, getType, getTypeDeclaration, getTypeHelper, getTypeRepository, isNullAllowed

Methods inherited from class java.lang.Object

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

Constructor Detail

TreatResolver

public TreatResolver(Resolver parent,
                     java.lang.String entityTypeName)

Creates a new TreatResolver.

Parameters:

parent - The parent of this resolver, which is never null

entityTypeName - The entity type name used to downcast the collection-valued field

Method Detail

accept

public void accept(ResolverVisitor visitor)

Visits this Resolver by the given visitor.

Specified by:

accept in class Resolver

Parameters:

visitor - The visitor to visit this object

buildTypeDeclaration

protected ITypeDeclaration buildTypeDeclaration()

Resolves the ITypeDeclaration of the property handled by this Resolver.

Specified by:

buildTypeDeclaration in class Resolver

Returns:

Either the ITypeDeclaration that was resolved by this Resolver or the ITypeDeclaration for IType.UNRESOLVABLE_TYPE if it could not be resolved

getEntityTypeName

public java.lang.String getEntityTypeName()

Returns the entity type name used to downcast the path expression.

Returns:

The entity type name used to downcast the path expression

getManagedType

public IManagedType getManagedType()

Returns the IManagedType associated with the field handled by this Resolver. If this Resolver does not handle a field that has a IManagedType, then null should be returned.

For example: "SELECT e FROM Employee e", the Resolver for e would be returning the IManagedType for Employee.

Overrides:

getManagedType in class Resolver

Returns:

Either the IManagedType, if it could be resolved; null otherwise

setNullAllowed

public void setNullAllowed(boolean nullAllowed)

Sets whether the Expression to be created, which wraps the attribute or query key name allows the target of the 1:1 relationship to be null if there is no corresponding relationship in the database.

Overrides:

setNullAllowed in class Resolver

Parameters:

nullAllowed - true to allow null if the corresponding relationship in the database does not exists; false otherwise

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object