maint-5-2/tapestry-core/src/main/java/org/apache/tapestry5/internal/services/ProxiesStackTraceElementAnalyzer.java

// Copyright 2009 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.services;

import org.apache.tapestry5.services.StackTraceElementAnalyzer;
import org.apache.tapestry5.services.StackTraceElementClassConstants;

/**
 * Identifies frames for various proxy classes (class name starts with a '$' and there's no line number.  They are
 * ommitted.
 *
 * @since 5.1.0.0
 */
public class ProxiesStackTraceElementAnalyzer implements StackTraceElementAnalyzer
{
    public String classForFrame(StackTraceElement frame)
    {
        return frame.getClassName().startsWith("$") && frame.getLineNumber() <= 0
               ? StackTraceElementClassConstants.OMITTED
               : null;
    }
}