001    // Copyright 2004, 2005 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.tapestry.pages;
016    
017    import org.apache.tapestry.INamespace;
018    import org.apache.tapestry.TapestryUtils;
019    import org.apache.tapestry.engine.ISpecificationSource;
020    import org.apache.tapestry.event.PageDetachListener;
021    import org.apache.tapestry.html.BasePage;
022    import org.apache.tapestry.util.exception.ExceptionAnalyzer;
023    import org.apache.tapestry.util.exception.ExceptionDescription;
024    
025    /**
026     * Default exception reporting page.
027     * 
028     * @author Howard Lewis Ship
029     */
030    
031    public abstract class Exception extends BasePage implements PageDetachListener
032    {
033        /** @since 4.1.4 */
034        public abstract String getPagePackages();
035        /** @since 4.1.4 */
036        public abstract String getComponentPackages();
037        /** @since 4.1.4 */
038        public abstract ISpecificationSource getSpecificationSource();
039    
040        /** Transient property. */
041        public abstract void setExceptions(ExceptionDescription[] exceptions);
042    
043        public void setException(Throwable value)
044        {
045            ExceptionAnalyzer analyzer = new ExceptionAnalyzer();
046    
047            ExceptionDescription[] exceptions = analyzer.analyze(value);
048    
049            setExceptions(exceptions);
050        }
051    
052        public boolean isDynamic()
053        {
054            return getRequestCycle().getResponseBuilder().isDynamic();
055        }
056        
057        public String[] getPackages()
058        {
059            INamespace namespace = getSpecificationSource().getApplicationNamespace();
060            String pages = namespace.getPropertyValue(getPagePackages());
061            String comps = namespace.getPropertyValue(getComponentPackages());
062            
063            StringBuffer sb = new StringBuffer();
064            if (pages != null)
065            {
066                sb.append(pages);
067    
068                if (comps!=null)
069                    sb.append(",");
070            }
071            
072            if (comps != null)
073                sb.append(comps);
074    
075            return TapestryUtils.split(sb.toString(), ',');
076        }
077    }