001    // Copyright 2006 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    
015    package org.apache.tapestry5.internal.util;
016    
017    import org.apache.tapestry5.services.ClassTransformation;
018    
019    import static java.lang.String.format;
020    
021    /**
022     * Implementation of {@link org.apache.tapestry5.internal.util.ParameterBuilder} that simply provides a static string
023     * value for the parameter expression.
024     */
025    public final class StringParameterBuilder implements ParameterBuilder
026    {
027        private final String expression;
028    
029        public StringParameterBuilder(String expression)
030        {
031            this.expression = expression;
032        }
033    
034        public String buildParameter(ClassTransformation transformation)
035        {
036            return expression;
037        }
038    
039        @Override
040        public String toString()
041        {
042            return format("StringParameterBuilder[%s]", expression);
043        }
044    }