org.hibernate.engine.spi.TypedValue#org.hibernate.param.CollectionFilterKeyParameterSpecification源码实例Demo

/**
 * Compile a filter. This method may be called multiple
 * times. Subsequent invocations are no-ops.
 */
public synchronized void compile(
		String collectionRole,
		Map replacements,
		boolean scalar) throws QueryException, MappingException {

	if ( !isCompiled() ) {
		addFromAssociation( "this", collectionRole );
		paramValueBinders.add(
				new CollectionFilterKeyParameterSpecification(
						collectionRole,
						getFactory().getMetamodel().collectionPersister( collectionRole ).getKeyType()
				)
		);
		compile( replacements, scalar );
	}
}
 

@Override
	protected void prepareFromClauseInputTree(AST fromClauseInput) {
		if ( !isSubQuery() ) {
//			// inject param specifications to account for dynamic filter param values
//			if ( ! getEnabledFilters().isEmpty() ) {
//				Iterator filterItr = getEnabledFilters().values().iterator();
//				while ( filterItr.hasNext() ) {
//					FilterImpl filter = ( FilterImpl ) filterItr.next();
//					if ( ! filter.getFilterDefinition().getParameterNames().isEmpty() ) {
//						Iterator paramItr = filter.getFilterDefinition().getParameterNames().iterator();
//						while ( paramItr.hasNext() ) {
//							String parameterName = ( String ) paramItr.next();
//							// currently param filters *only* work with single-column parameter types;
//							// if that limitation is ever lifted, this logic will need to change to account for that
//							ParameterNode collectionFilterKeyParameter = ( ParameterNode ) astFactory.create( PARAM, "?" );
//							DynamicFilterParameterSpecification paramSpec = new DynamicFilterParameterSpecification(
//									filter.getName(),
//									parameterName,
//									filter.getFilterDefinition().getParameterType( parameterName ),
//									 positionalParameterCount++
//							);
//							collectionFilterKeyParameter.setHqlParameterSpecification( paramSpec );
//							parameterSpecs.add( paramSpec );
//						}
//					}
//				}
//			}

			if ( isFilter() ) {
				// Handle collection-filter compilation.
				// IMPORTANT NOTE: This is modifying the INPUT (HQL) tree, not the output tree!
				QueryableCollection persister = sessionFactoryHelper.getCollectionPersister( collectionFilterRole );
				Type collectionElementType = persister.getElementType();
				if ( !collectionElementType.isEntityType() ) {
					throw new QueryException( "collection of values in filter: this" );
				}

				String collectionElementEntityName = persister.getElementPersister().getEntityName();
				ASTFactory inputAstFactory = hqlParser.getASTFactory();
				AST fromElement = inputAstFactory.create( HqlTokenTypes.FILTER_ENTITY, collectionElementEntityName );
				ASTUtil.createSibling( inputAstFactory, HqlTokenTypes.ALIAS, "this", fromElement );
				fromClauseInput.addChild( fromElement );
				// Show the modified AST.
				LOG.debug( "prepareFromClauseInputTree() : Filter - Added 'this' as a from element..." );
				queryTranslatorImpl.showHqlAst( hqlParser.getAST() );

				// Create a parameter specification for the collection filter...
				final Type collectionFilterKeyType = sessionFactoryHelper.requireQueryableCollection( collectionFilterRole )
						.getKeyType();
				final ParameterNode collectionFilterKeyParameter = (ParameterNode) astFactory.create( PARAM, "?" );
				final CollectionFilterKeyParameterSpecification collectionFilterKeyParameterSpec = new CollectionFilterKeyParameterSpecification(
						collectionFilterRole,
						collectionFilterKeyType
				);
				parameterCount++;
				collectionFilterKeyParameter.setHqlParameterSpecification( collectionFilterKeyParameterSpec );
				parameterSpecs.add( collectionFilterKeyParameterSpec );
			}
		}
	}
 

protected void prepareFromClauseInputTree(AST fromClauseInput) {
		if ( !isSubQuery() ) {
//			// inject param specifications to account for dynamic filter param values
//			if ( ! getEnabledFilters().isEmpty() ) {
//				Iterator filterItr = getEnabledFilters().values().iterator();
//				while ( filterItr.hasNext() ) {
//					FilterImpl filter = ( FilterImpl ) filterItr.next();
//					if ( ! filter.getFilterDefinition().getParameterNames().isEmpty() ) {
//						Iterator paramItr = filter.getFilterDefinition().getParameterNames().iterator();
//						while ( paramItr.hasNext() ) {
//							String parameterName = ( String ) paramItr.next();
//							// currently param filters *only* work with single-column parameter types;
//							// if that limitation is ever lifted, this logic will need to change to account for that
//							ParameterNode collectionFilterKeyParameter = ( ParameterNode ) astFactory.create( PARAM, "?" );
//							DynamicFilterParameterSpecification paramSpec = new DynamicFilterParameterSpecification(
//									filter.getName(),
//									parameterName,
//									filter.getFilterDefinition().getParameterType( parameterName ),
//									 positionalParameterCount++
//							);
//							collectionFilterKeyParameter.setHqlParameterSpecification( paramSpec );
//							parameters.add( paramSpec );
//						}
//					}
//				}
//			}

			if ( isFilter() ) {
				// Handle collection-fiter compilation.
				// IMPORTANT NOTE: This is modifying the INPUT (HQL) tree, not the output tree!
				QueryableCollection persister = sessionFactoryHelper.getCollectionPersister( collectionFilterRole );
				Type collectionElementType = persister.getElementType();
				if ( !collectionElementType.isEntityType() ) {
					throw new QueryException( "collection of values in filter: this" );
				}

				String collectionElementEntityName = persister.getElementPersister().getEntityName();
				ASTFactory inputAstFactory = hqlParser.getASTFactory();
				AST fromElement = ASTUtil.create( inputAstFactory, HqlTokenTypes.FILTER_ENTITY, collectionElementEntityName );
				ASTUtil.createSibling( inputAstFactory, HqlTokenTypes.ALIAS, "this", fromElement );
				fromClauseInput.addChild( fromElement );
				// Show the modified AST.
				if ( log.isDebugEnabled() ) {
					log.debug( "prepareFromClauseInputTree() : Filter - Added 'this' as a from element..." );
				}
				queryTranslatorImpl.showHqlAst( hqlParser.getAST() );

				// Create a parameter specification for the collection filter...
				Type collectionFilterKeyType = sessionFactoryHelper.requireQueryableCollection( collectionFilterRole ).getKeyType();
				ParameterNode collectionFilterKeyParameter = ( ParameterNode ) astFactory.create( PARAM, "?" );
				CollectionFilterKeyParameterSpecification collectionFilterKeyParameterSpec = new CollectionFilterKeyParameterSpecification(
						collectionFilterRole, collectionFilterKeyType, positionalParameterCount++
				);
				collectionFilterKeyParameter.setHqlParameterSpecification( collectionFilterKeyParameterSpec );
				parameters.add( collectionFilterKeyParameterSpec );
			}
		}
	}