    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}