Clover coverage report - Code Coverage for hivemind release 1.1-alpha-3
Coverage timestamp: Tue Mar 22 2005 09:10:26 EST
file stats: LOC: 140   Methods: 5
NCLOC: 84   Classes: 1
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 Source file Conditionals Statements Methods TOTAL
XmlResourceProcessor.java 100% 92.3% 100% 94.9%
coverage coverage
 1   
 // Copyright 2004, 2005 The Apache Software Foundation
 2   
 //
 3   
 // Licensed under the Apache License, Version 2.0 (the "License");
 4   
 // you may not use this file except in compliance with the License.
 5   
 // You may obtain a copy of the License at
 6   
 //
 7   
 //     http://www.apache.org/licenses/LICENSE-2.0
 8   
 //
 9   
 // Unless required by applicable law or agreed to in writing, software
 10   
 // distributed under the License is distributed on an "AS IS" BASIS,
 11   
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 12   
 // See the License for the specific language governing permissions and
 13   
 // limitations under the License.
 14   
 
 15   
 package org.apache.hivemind.parse;
 16   
 
 17   
 import java.io.IOException;
 18   
 import java.net.URL;
 19   
 
 20   
 import javax.xml.parsers.FactoryConfigurationError;
 21   
 import javax.xml.parsers.ParserConfigurationException;
 22   
 import javax.xml.parsers.SAXParser;
 23   
 import javax.xml.parsers.SAXParserFactory;
 24   
 
 25   
 import org.apache.commons.logging.Log;
 26   
 import org.apache.commons.logging.LogFactory;
 27   
 import org.apache.hivemind.ApplicationRuntimeException;
 28   
 import org.apache.hivemind.ClassResolver;
 29   
 import org.apache.hivemind.ErrorHandler;
 30   
 import org.apache.hivemind.Resource;
 31   
 import org.xml.sax.InputSource;
 32   
 import org.xml.sax.SAXException;
 33   
 
 34   
 /**
 35   
  * The XmlResourceProcessor processes XML {@link Resource resources}using the
 36   
  * {@link DescriptorParser}which is used as a SAX ContentHandler. The result of
 37   
  * {@link #processResource(Resource) processing a resource}is a {@link ModuleDescriptor}.
 38   
  * 
 39   
  * @see org.apache.hivemind.parse.DescriptorParser
 40   
  * @see org.apache.hivemind.ModuleDescriptorProvider
 41   
  * @since 1.1
 42   
  * @author Knut Wannheden
 43   
  */
 44   
 public class XmlResourceProcessor
 45   
 {
 46   
     private static final Log LOG = LogFactory.getLog(XmlResourceProcessor.class);
 47   
 
 48   
     protected ClassResolver _resolver;
 49   
 
 50   
     protected ErrorHandler _errorHandler;
 51   
 
 52   
     private DescriptorParser _contentHandler;
 53   
 
 54   
     private SAXParser _saxParser;
 55   
 
 56  241
     public XmlResourceProcessor(ClassResolver resolver, ErrorHandler errorHandler)
 57   
     {
 58  241
         _resolver = resolver;
 59  241
         _errorHandler = errorHandler;
 60   
     }
 61   
 
 62  255
     public ModuleDescriptor processResource(Resource resource)
 63   
     {
 64  255
         if (_contentHandler == null)
 65  241
             _contentHandler = new DescriptorParser(_errorHandler);
 66   
 
 67  255
         _contentHandler.initialize(resource, _resolver);
 68   
 
 69  255
         try
 70   
         {
 71  255
             if (LOG.isDebugEnabled())
 72  27
                 LOG.debug("Parsing " + resource);
 73   
 
 74  255
             ModuleDescriptor descriptor = parseResource(resource, getSAXParser(), _contentHandler);
 75   
 
 76  250
             if (LOG.isDebugEnabled())
 77  27
                 LOG.debug("Result: " + descriptor);
 78   
 
 79  250
             return descriptor;
 80   
         }
 81   
         catch (ApplicationRuntimeException e)
 82   
         {
 83  5
             throw e;
 84   
         }
 85   
         catch (Exception e)
 86   
         {
 87  0
             _saxParser = null;
 88   
 
 89  0
             throw new ApplicationRuntimeException(
 90   
                     ParseMessages.errorReadingDescriptor(resource, e), resource, _contentHandler
 91   
                             .getLocation(), e);
 92   
         }
 93   
         finally
 94   
         {
 95  255
             _contentHandler.resetParser();
 96   
         }
 97   
     }
 98   
 
 99   
     /**
 100   
      * Returns the ModuleDescriptor obtained by parsing the specified Resource using the given
 101   
      * SAXParser and DescriptorParser. Called by {@link #processResource(Resource)}after the
 102   
      * DescriptorParser has been
 103   
      * {@link DescriptorParser#initialize(Resource, ClassResolver) initialized}. Suitable for
 104   
      * overriding by subclasses.
 105   
      */
 106  255
     protected ModuleDescriptor parseResource(Resource resource, SAXParser parser,
 107   
             DescriptorParser contentHandler) throws SAXException, IOException
 108   
     {
 109  255
         InputSource source = getInputSource(resource);
 110   
 
 111  253
         parser.parse(source, contentHandler);
 112   
 
 113  250
         return contentHandler.getModuleDescriptor();
 114   
     }
 115   
 
 116  255
     private InputSource getInputSource(Resource resource)
 117   
     {
 118  255
         try
 119   
         {
 120  255
             URL url = resource.getResourceURL();
 121   
 
 122  255
             return new InputSource(url.openStream());
 123   
         }
 124   
         catch (Exception e)
 125   
         {
 126  2
             throw new ApplicationRuntimeException(ParseMessages.missingResource(resource),
 127   
                     resource, null, null);
 128   
         }
 129   
     }
 130   
 
 131  255
     private SAXParser getSAXParser() throws ParserConfigurationException, SAXException,
 132   
             FactoryConfigurationError
 133   
     {
 134  255
         if (_saxParser == null)
 135  241
             _saxParser = SAXParserFactory.newInstance().newSAXParser();
 136   
 
 137  255
         return _saxParser;
 138   
     }
 139   
 
 140   
 }