    001    // Copyright 2009 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.services;
    016
    017    import org.apache.tapestry5.services.StackTraceElementAnalyzer;
    018    import org.apache.tapestry5.services.StackTraceElementClassConstants;
    019
    020    /**
    021     * Identifies frames for various proxy classes (class name starts with a '$' and there's no line number.  They are
    022     * ommitted.
    023     *
    024     * @since 5.1.0.0
    025     */
    026    public class ProxiesStackTraceElementAnalyzer implements StackTraceElementAnalyzer
    027    {
    028        public String classForFrame(StackTraceElement frame)
    029        {
    030            return frame.getClassName().startsWith("$") && frame.getLineNumber() <= 0
    031                   ? StackTraceElementClassConstants.OMITTED
    032                   : null;
    033        }
    034    }