| /******************************************************************************* |
| * Copyright (c) 2006, 2013 Oracle and/or its affiliates. All rights reserved. |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0 |
| * which accompanies this distribution. |
| * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html |
| * and the Eclipse Distribution License is available at |
| * http://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * Contributors: |
| * Oracle - initial API and implementation |
| * |
| ******************************************************************************/ |
| package org.eclipse.persistence.internal.jpa.jpql; |
| |
| import org.eclipse.persistence.jpa.jpql.AbstractEclipseLinkParameterTypeVisitor; |
| |
| /** |
| * This visitor's responsibility is to find the type of an input parameter. |
| * |
| * @version 2.5 |
| * @since 2.3 |
| * @author Pascal Filion |
| */ |
| final class ParameterTypeVisitor extends AbstractEclipseLinkParameterTypeVisitor { |
| |
| /** |
| * The context used to query information about the query. |
| */ |
| private final JPQLQueryContext queryContext; |
| |
| /** |
| * Creates a new <code>ParameterTypeVisitor</code>. |
| * |
| * @param queryContext The context used to query information about the application metadata and |
| * cached information |
| */ |
| ParameterTypeVisitor(JPQLQueryContext queryContext) { |
| super(); |
| this.queryContext = queryContext; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public Class<?> getType() { |
| |
| // The type should be ignored, use the special constant |
| if (ignoreType) { |
| return Object.class; |
| } |
| |
| // The type name was set |
| if (typeName != null) { |
| return queryContext.getType(typeName); |
| } |
| |
| // The calculation couldn't find an expression with a type |
| if (expression == null) { |
| if (type == null) { |
| type = Object.class; |
| } |
| return type; |
| } |
| |
| return queryContext.getType(expression); |
| } |
| } |