// Copyright 2007 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;

 import org.apache.tapestry5.ioc.services.SymbolProvider;

 /**

  * Implementation of {@link SymbolProvider} that only supports a single key/value pair.

  */

 public class SingleKeySymbolProvider implements SymbolProvider

 {

     private final String symbolName;

     private final String value;

     public SingleKeySymbolProvider(final String symbolName, final String value)

     {

         this.symbolName = symbolName;

         this.value = value;

     }

     public String valueForSymbol(String symbolName)

     {

         if (this.symbolName.equalsIgnoreCase(symbolName)) return value;

         return null;

     }

 }