Coverage Report - com.mattunderscore.filter.contentnegotiation.variantsource.BaseVariantXMLSource
 
Classes in this File Line Coverage Branch Coverage Complexity
BaseVariantXMLSource
89%
26/29
75%
3/4
2.4
 
 1  
 /* Copyright © 2013 Matthew Champion
 2  
 All rights reserved.
 3  
 
 4  
 Redistribution and use in source and binary forms, with or without
 5  
 modification, are permitted provided that the following conditions are met:
 6  
  * Redistributions of source code must retain the above copyright
 7  
       notice, this list of conditions and the following disclaimer.
 8  
  * Redistributions in binary form must reproduce the above copyright
 9  
       notice, this list of conditions and the following disclaimer in the
 10  
       documentation and/or other materials provided with the distribution.
 11  
  * Neither the name of mattunderscore.com nor the
 12  
       names of its contributors may be used to endorse or promote products
 13  
       derived from this software without specific prior written permission.
 14  
 
 15  
 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 16  
 ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 17  
 WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 18  
 DISCLAIMED. IN NO EVENT SHALL MATTHEW CHAMPION BE LIABLE FOR ANY
 19  
 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 20  
 (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 21  
 LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 22  
 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 23  
 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 24  
 SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */
 25  
 
 26  
 package com.mattunderscore.filter.contentnegotiation.variantsource;
 27  
 
 28  
 import java.io.InputStream;
 29  
 import java.util.List;
 30  
 import java.util.logging.Level;
 31  
 import java.util.logging.Logger;
 32  
 
 33  
 import javax.xml.parsers.SAXParser;
 34  
 import javax.xml.parsers.SAXParserFactory;
 35  
 import javax.xml.validation.Schema;
 36  
 
 37  
 import com.mattunderscore.filter.contentnegotiation.parser.Variant;
 38  
 
 39  
 /**
 40  
  * A variant source that parses XML for variants. It uses SAX to parse the XML. The XML is passed in
 41  
  * through an input stream. A SAX handler to use can also be passed in. By default it uses the
 42  
  * {@link VariantXMLParser} class. This class will try to validate the XML file against the schema.
 43  
  * 
 44  
  * @author Matt Champion
 45  
  * @since 0.2.0
 46  
  */
 47  
 public class BaseVariantXMLSource implements InputStreamVariantSource
 48  
 {
 49  4
     private static final Logger log = Logger.getLogger(FilterVariantXMLSource.class
 50  2
             .getCanonicalName());
 51  
 
 52  
     private InputStream inputStream;
 53  
     private VariantSAXHandler parser;
 54  
 
 55  
     public BaseVariantXMLSource()
 56  
     {
 57  32
         this(new VariantXMLParser());
 58  32
     }
 59  
 
 60  
     public BaseVariantXMLSource(final VariantSAXHandler parser)
 61  32
     {
 62  32
         this.parser = parser;
 63  32
     }
 64  
 
 65  
     /**
 66  
      * Setter for the SAX handler.
 67  
      * 
 68  
      * @param handler
 69  
      *            The SAX handler
 70  
      * @since 0.2.0
 71  
      */
 72  
     public void setHandler(final VariantSAXHandler handler)
 73  
     {
 74  2
         this.parser = handler;
 75  2
     }
 76  
 
 77  
     @Override
 78  
     public List<Variant> getVariants() throws VariantSourceException
 79  
     {
 80  24
         if (inputStream == null)
 81  
         {
 82  2
             throw new VariantSourceConfigurationException("No input stream has been set");
 83  
         }
 84  
         else
 85  
         {
 86  
             try
 87  
             {
 88  22
                 final SAXParserFactory factory = SAXParserFactory.newInstance();
 89  
                 try
 90  
                 {
 91  22
                     final Schema schema = parser.getSchema();
 92  22
                     if (schema != null)
 93  
                     {
 94  22
                         factory.setValidating(false);
 95  22
                         factory.setNamespaceAware(true);
 96  22
                         factory.setSchema(schema);
 97  
                     }
 98  
                     else
 99  
                     {
 100  0
                         log.log(Level.FINE, "XML Validation not required");
 101  
                     }
 102  
                 }
 103  0
                 catch (final NoSchemaException exception)
 104  
                 {
 105  0
                     log.log(Level.FINE, "XML Validation not required");
 106  22
                 }
 107  22
                 final SAXParser saxParser = factory.newSAXParser();
 108  22
                 saxParser.parse(inputStream, parser);
 109  18
                 return parser.getVariants();
 110  
             }
 111  4
             catch (final Throwable throwable)
 112  
             {
 113  4
                 log.log(Level.WARNING, "BaseVariantXMLSource unable to return variants.",
 114  
                         throwable);
 115  4
                 throw new VariantSourceException("BaseVariantXMLSource unable to return variants.",
 116  
                         throwable);
 117  
             }
 118  
         }
 119  
     }
 120  
 
 121  
     @Override
 122  
     public void setInputStream(final InputStream inputStream)
 123  
     {
 124  22
         this.inputStream = inputStream;
 125  22
     }
 126  
 }