001// Copyright 2009, 2010 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
015package org.apache.tapestry5.internal.services;
016
017import org.apache.tapestry5.http.internal.TapestryHttpInternalConstants;
018import org.apache.tapestry5.ioc.annotations.Symbol;
019import org.apache.tapestry5.services.StackTraceElementAnalyzer;
020import org.apache.tapestry5.services.StackTraceElementClassConstants;
021
022/**
023 * Identifies frames for application classes.
024 * 
025 * @since 5.1.0.0
026 */
027public class ApplicationStackTraceElementAnalyzer implements StackTraceElementAnalyzer
028{
029    private final String appPackage;
030
031    public ApplicationStackTraceElementAnalyzer(@Symbol(TapestryHttpInternalConstants.TAPESTRY_APP_PACKAGE_PARAM)
032    String appPackage)
033    {
034        this.appPackage = appPackage;
035    }
036
037    public String classForFrame(StackTraceElement frame)
038    {
039        return frame.getClassName().startsWith(appPackage) && frame.getLineNumber() > 0 ? StackTraceElementClassConstants.USER_CODE
040                : null;
041    }
042}