Class TreatResolver
java.lang.Object
org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver
org.eclipse.persistence.jpa.jpql.tools.resolver.TreatResolver
This
Resolver
resolves a path and casts it as another entity type.- Since:
- 2.3
- Version:
- 2.5
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Constructor Summary
ConstructorDescriptionTreatResolver
(Resolver parent, String entityTypeName) Creates a newTreatResolver
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Method Summary
Modifier and TypeMethodDescriptionprotected ITypeDeclaration
Resolves theITypeDeclaration
of the property handled by thisResolver
.Returns the entity type name used to downcast the path expression.Returns theIManagedType
associated with the field handled by thisResolver
.void
setNullAllowed
(boolean nullAllowed) Sets whether theExpression
to be created, which wraps the attribute or query key name allows the target of the 1:1 relationship to benull
if there is no corresponding relationship in the database.toString()
Methods inherited from class org.eclipse.persistence.jpa.jpql.tools.resolver.Resolver
addChild, buildType, checkParent, getChild, getMapping, getParent, getParentManagedType, getParentMapping, getParentType, getParentTypeDeclaration, getProvider, getQuery, getType, getType, getType, getTypeDeclaration, getTypeHelper, getTypeRepository, isNullAllowed
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Constructor Details
-
TreatResolver
Creates a newTreatResolver
.- Parameters:
parent
- The parent of this resolver, which is nevernull
entityTypeName
- The entity type name used to downcast the collection-valued field
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Method Details
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buildTypeDeclaration
Description copied from class:Resolver
Resolves theITypeDeclaration
of the property handled by thisResolver
.- Specified by:
buildTypeDeclaration
in classResolver
- Returns:
- Either the
ITypeDeclaration
that was resolved by thisResolver
or theITypeDeclaration
forIType.UNRESOLVABLE_TYPE
if it could not be resolved
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getEntityTypeName
Returns the entity type name used to downcast the path expression.- Returns:
- The entity type name used to downcast the path expression
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getManagedType
Description copied from class:Resolver
Returns theIManagedType
associated with the field handled by thisResolver
. If thisResolver
does not handle a field that has aIManagedType
, thennull
should be returned.For example: "
SELECT e FROM Employee e
", theResolver
for e would be returning theIManagedType
for Employee.- Overrides:
getManagedType
in classResolver
- Returns:
- Either the
IManagedType
, if it could be resolved;null
otherwise
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setNullAllowed
public void setNullAllowed(boolean nullAllowed) Description copied from class:Resolver
Sets whether theExpression
to be created, which wraps the attribute or query key name allows the target of the 1:1 relationship to benull
if there is no corresponding relationship in the database.- Overrides:
setNullAllowed
in classResolver
- Parameters:
nullAllowed
-true
to allownull
if the corresponding relationship in the database does not exists;false
otherwise
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toString
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