/*
* Copyright 2010 Alibaba Group Holding Limited.
* All rights reserved.
*
* 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.
*/
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 com.alibaba.citrus.service.velocity.impl;
import org.apache.velocity.runtime.parser.node.AbstractExecutor;
import org.apache.velocity.runtime.parser.node.BooleanPropertyExecutor;
import org.apache.velocity.runtime.parser.node.GetExecutor;
import org.apache.velocity.runtime.parser.node.MapGetExecutor;
import org.apache.velocity.runtime.parser.node.PropertyExecutor;
import org.apache.velocity.util.introspection.Info;
import org.apache.velocity.util.introspection.VelPropertyGet;
/**
* ��velocityĬ�ϵ�uberspect���ı�Ĭ�ϵ�get property������˳��
* <ul>
* <li><code>getFoo()</code>��<code>getfoo()</code>��</li>
* <li><code>isFoo()</code>��<code>isfoo()</code>��</li>
* <li><code>Map.get(String)</code>��</li>
* <li><code>AnyType.get(String)</code>��</li>
* </ul>
*
* @author Michael Zhou
*/
public class CustomizedUberspectImpl extends org.apache.velocity.util.introspection.UberspectImpl {
@Override
public VelPropertyGet getPropertyGet(Object obj, String identifier, Info i) throws Exception {
if (obj == null) {
return null;
}
Class<?> claz = obj.getClass();
/*
* first try for a getFoo() type of property (also getfoo() )
*/
AbstractExecutor executor = new PropertyExecutor(log, introspector, claz, identifier);
/*
* if that didn't work, look for boolean isFoo()
*/
if (!executor.isAlive()) {
executor = new BooleanPropertyExecutor(log, introspector, claz, identifier);
}
/*
* Let's see if we are a map...
*/
if (!executor.isAlive()) {
executor = new MapGetExecutor(log, claz, identifier);
}
/*
* finally, look for get("foo")
*/
if (!executor.isAlive()) {
executor = new GetExecutor(log, introspector, claz, identifier);
}
return executor.isAlive() ? new VelGetterImpl(executor) : null;
}
}