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PropertyFactory.javaAPI DocHibernate 3.2.55780Thu Jul 13 19:09:20 BST 2006org.hibernate.tuple

PropertyFactory

public class PropertyFactory extends Object
Responsible for generation of runtime metamodel {@link Property} representations. Makes distinction between identifier, version, and other (standard) properties.
author
Steve Ebersole

Fields Summary
Constructors Summary
Methods Summary
public static IdentifierPropertybuildIdentifierProperty(org.hibernate.mapping.PersistentClass mappedEntity, org.hibernate.id.IdentifierGenerator generator)
Generates an IdentifierProperty representation of the for a given entity mapping.

param
mappedEntity The mapping definition of the entity.
param
generator The identifier value generator to use for this identifier.
return
The appropriate IdentifierProperty definition.


		String mappedUnsavedValue = mappedEntity.getIdentifier().getNullValue();
		Type type = mappedEntity.getIdentifier().getType();
		Property property = mappedEntity.getIdentifierProperty();
		
		IdentifierValue unsavedValue = UnsavedValueFactory.getUnsavedIdentifierValue(
				mappedUnsavedValue,
				getGetter( property ),
				type,
				getConstructor(mappedEntity)
			);

		if ( property == null ) {
			// this is a virtual id property...
			return new IdentifierProperty(
			        type,
					mappedEntity.hasEmbeddedIdentifier(),
					mappedEntity.hasIdentifierMapper(),
					unsavedValue,
					generator
				);
		}
		else {
			return new IdentifierProperty(
					property.getName(),
					property.getNodeName(),
					type,
					mappedEntity.hasEmbeddedIdentifier(),
					unsavedValue,
					generator
				);
		}
public static StandardPropertybuildStandardProperty(org.hibernate.mapping.Property property, boolean lazyAvailable)
Generate a "standard" (i.e., non-identifier and non-version) based on the given mapped property.

param
property The mapped property.
param
lazyAvailable Is property lazy loading currently available.
return
The appropriate StandardProperty definition.

		
		final Type type = property.getValue().getType();
		
		// we need to dirty check collections, since they can cause an owner
		// version number increment
		
		// we need to dirty check many-to-ones with not-found="ignore" in order 
		// to update the cache (not the database), since in this case a null
		// entity reference can lose information
		
		boolean alwaysDirtyCheck = type.isAssociationType() && 
				( (AssociationType) type ).isAlwaysDirtyChecked(); 

		return new StandardProperty(
				property.getName(),
				property.getNodeName(),
				type,
				lazyAvailable && property.isLazy(),
				property.isInsertable(),
				property.isUpdateable(),
		        property.getGeneration() == PropertyGeneration.INSERT || property.getGeneration() == PropertyGeneration.ALWAYS,
				property.getGeneration() == PropertyGeneration.ALWAYS,
				property.isOptional(),
				alwaysDirtyCheck || property.isUpdateable(),
				property.isOptimisticLocked(),
				property.getCascadeStyle(),
		        property.getValue().getFetchMode()
			);
public static VersionPropertybuildVersionProperty(org.hibernate.mapping.Property property, boolean lazyAvailable)
Generates a VersionProperty representation for an entity mapping given its version mapping Property.

param
property The version mapping Property.
param
lazyAvailable Is property lazy loading currently available.
return
The appropriate VersionProperty definition.

		String mappedUnsavedValue = ( (KeyValue) property.getValue() ).getNullValue();
		
		VersionValue unsavedValue = UnsavedValueFactory.getUnsavedVersionValue(
				mappedUnsavedValue, 
				getGetter( property ),
				(VersionType) property.getType(),
				getConstructor( property.getPersistentClass() )
			);

		boolean lazy = lazyAvailable && property.isLazy();

		return new VersionProperty(
		        property.getName(),
		        property.getNodeName(),
		        property.getValue().getType(),
		        lazy,
				property.isInsertable(),
				property.isUpdateable(),
		        property.getGeneration() == PropertyGeneration.INSERT || property.getGeneration() == PropertyGeneration.ALWAYS,
				property.getGeneration() == PropertyGeneration.ALWAYS,
				property.isOptional(),
				property.isUpdateable() && !lazy,
				property.isOptimisticLocked(),
		        property.getCascadeStyle(),
		        unsavedValue
			);
private static java.lang.reflect.ConstructorgetConstructor(org.hibernate.mapping.PersistentClass persistentClass)

		if ( persistentClass == null || !persistentClass.hasPojoRepresentation() ) {
			return null;
		}

		try {
			return ReflectHelper.getDefaultConstructor( persistentClass.getMappedClass() );
		}
		catch( Throwable t ) {
			return null;
		}
private static org.hibernate.property.GettergetGetter(org.hibernate.mapping.Property mappingProperty)

		if ( mappingProperty == null || !mappingProperty.getPersistentClass().hasPojoRepresentation() ) {
			return null;
		}

		PropertyAccessor pa = PropertyAccessorFactory.getPropertyAccessor( mappingProperty, EntityMode.POJO );
		return pa.getGetter( mappingProperty.getPersistentClass().getMappedClass(), mappingProperty.getName() );