| // Copyright 2008 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.tapestry.engine; |
| |
| import ognl.ClassResolver; |
| import ognl.Ognl; |
| import ognl.OgnlContext; |
| import ognl.TypeConverter; |
| import org.apache.commons.pool.BasePoolableObjectFactory; |
| |
| /** |
| * Used by {@link ExpressionEvaluatorImpl} to pool {@link ognl.OgnlContext} objects. |
| */ |
| public class PoolableOgnlContextFactory extends BasePoolableObjectFactory { |
| |
| private final ClassResolver _resolver; |
| |
| private TypeConverter _typeConverter; |
| |
| public PoolableOgnlContextFactory(ClassResolver resolver, TypeConverter typeConverter) |
| { |
| _resolver = resolver; |
| _typeConverter = typeConverter; |
| } |
| |
| public Object makeObject() |
| throws Exception |
| { |
| return Ognl.createDefaultContext(null, _resolver, _typeConverter); |
| } |
| |
| public void activateObject(Object obj) |
| throws Exception |
| { |
| OgnlContext context = (OgnlContext)obj; |
| |
| if (context.getRoot() != null || context.getValues().size() > 0) |
| { |
| context.clear(); |
| } |
| } |
| } |