// Copyright 2010 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.tapestry5.internal.spring;

import java.util.Properties;

import org.apache.tapestry5.ioc.services.SymbolSource;
import org.springframework.beans.factory.config.PropertyPlaceholderConfigurer;

public class SymbolBeanFactoryPostProcessor extends PropertyPlaceholderConfigurer
{
    
    private SymbolSource symbolSource;

    public SymbolBeanFactoryPostProcessor(SymbolSource symbolSource)
    {
        super();
        this.symbolSource = symbolSource;
        setIgnoreUnresolvablePlaceholders(true);
    }

    @Override
    protected String resolvePlaceholder(String placeholder, Properties props)
    {
        try
        {
            return symbolSource.valueForSymbol(placeholder);
        }
        catch(RuntimeException e)
        {
             return super.resolvePlaceholder(placeholder, props);
        }
    }

}
