| /* Copyright 2004 The Apache Software Foundation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package org.apache.xmlbeans.impl.store; |
| |
| import java.lang.reflect.Constructor; |
| import java.util.List; |
| |
| /** |
| * Author: Cezar Andrei (cezar.andrei at bea.com) |
| * Date: Nov 6, 2003 |
| * |
| * Help class to decouple from xbean_xpath.jar and jaxen.jar (version v1.1 beta2) |
| */ |
| public final class JaxenXBeansDelegate |
| { |
| private JaxenXBeansDelegate() |
| {} |
| |
| static SelectPathInterface createInstance(String xpath) |
| { |
| if (_constructor==null) |
| return null; |
| |
| try |
| { |
| return (JaxenXBeansDelegate.SelectPathInterface)_constructor.newInstance(new Object[] {xpath}); |
| } |
| catch (Exception e) |
| { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| |
| // Loose coupling functionality with xqrl.jar |
| |
| private static Constructor _constructor; |
| |
| static |
| { |
| boolean hasTheJars = false; |
| Class jaxenXPathImpl = null; |
| try |
| { |
| // from jaxen.jar |
| Class.forName( "org.jaxen.BaseXPath" ); |
| // from xbean_xpath.jar |
| jaxenXPathImpl = Class.forName( "org.apache.xmlbeans.impl.xpath.jaxen.XBeansXPathAdv" ); |
| |
| hasTheJars = true; |
| } |
| catch ( ClassNotFoundException e ) |
| { |
| hasTheJars = false; |
| } |
| catch ( NoClassDefFoundError e ) |
| { |
| hasTheJars = false; |
| } |
| |
| if (hasTheJars) |
| { |
| try |
| { |
| _constructor = |
| jaxenXPathImpl.getConstructor( new Class[] { String.class } ); |
| } |
| catch ( Exception e ) |
| { |
| throw new RuntimeException( e ); |
| } |
| } |
| } |
| |
| public static interface SelectPathInterface |
| { |
| public List selectPath(Object node); |
| } |
| } |