    001    // Copyright 2010 The Apache Software Foundation
    002    //
    003    // Licensed under the Apache License, Version 2.0 (the "License");
    004    // you may not use this file except in compliance with the License.
    005    // You may obtain a copy of the License at
    006    //
    007    // http://www.apache.org/licenses/LICENSE-2.0
    008    //
    009    // Unless required by applicable law or agreed to in writing, software
    010    // distributed under the License is distributed on an "AS IS" BASIS,
    011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    012    // See the License for the specific language governing permissions and
    013    // limitations under the License.
    014    package org.apache.tapestry5.internal.spring;
    015
    016    import java.util.Properties;
    017
    018    import org.apache.tapestry5.ioc.services.SymbolSource;
    019    import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;
    020
    021    public class SymbolBeanFactoryPostProcessor extends PropertyPlaceholderConfigurer
    022    {
    023
    024        private SymbolSource symbolSource;
    025
    026        public SymbolBeanFactoryPostProcessor(SymbolSource symbolSource)
    027        {
    028            super();
    029            this.symbolSource = symbolSource;
    030            setIgnoreUnresolvablePlaceholders(true);
    031        }
    032
    033        @Override
    034        protected String resolvePlaceholder(String placeholder, Properties props)
    035        {
    036            try
    037            {
    038                return symbolSource.valueForSymbol(placeholder);
    039            }
    040            catch(RuntimeException e)
    041            {
    042                 return super.resolvePlaceholder(placeholder, props);
    043            }
    044        }
    045
    046    }