/*

  * Licensed to the Apache Software Foundation (ASF) under one or more

  * contributor license agreements.  See the NOTICE file distributed with

  * this work for additional information regarding copyright ownership.

  * The ASF licenses this file to You under the Apache License, Version 2.0

  * (the "License"); you may not use this file except in compliance with

  * the License.  You may obtain a copy of the License at

  *

  *  http://www.apache.org/licenses/LICENSE-2.0

  *

  * Unless required by applicable law or agreed to in writing, software

  * distributed under the License is distributed on an "AS IS" BASIS,

  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

  * See the License for the specific language governing permissions and

  * limitations under the License.

  */

 package org.apache.any23.extractor.rdfa;

 import org.apache.any23.extractor.ExtractionContext;

 import org.apache.any23.extractor.ExtractionException;

 import org.apache.any23.extractor.ExtractionParameters;

 import org.apache.any23.extractor.ExtractionResult;

 import org.apache.any23.extractor.Extractor;

 import org.apache.any23.extractor.ExtractorDescription;

 import org.apache.any23.extractor.ExtractorFactory;

 import org.apache.any23.extractor.SimpleExtractorFactory;

 import org.w3c.dom.Document;

 import java.io.IOException;

 import java.net.URL;

 import java.util.Arrays;

 /**

  * {@link org.apache.any23.extractor.Extractor} implementation for

  * <a href="http://www.w3.org/TR/rdfa-syntax/">RDFa 1.1</a> specification.

  *

  * @author Michele Mostarda (mostarda@fbk.eu)

  */

 public class RDFa11Extractor implements Extractor.TagSoupDOMExtractor {

     public final static String NAME = "html-rdfa11";

     public final static ExtractorFactory<RDFa11Extractor> factory =

             SimpleExtractorFactory.create(

                     NAME,

                     null,

                     Arrays.asList("text/html;q=0.3", "application/xhtml+xml;q=0.3"),

                     "example-rdfa11.html",

                     RDFa11Extractor.class

             );

     private final RDFa11Parser parser;

      private boolean verifyDataType;

      private boolean stopAtFirstError;

      /**

       * Constructor, allows to specify the validation and error handling policies.

       *

       * @param verifyDataType if <code>true</code> the data types will be verified,

       *         if <code>false</code> will be ignored.

       * @param stopAtFirstError if <code>true</code> the parser will stop at first parsing error,

       *        if <code>false</code> will ignore non blocking errors.

       */

      public RDFa11Extractor(boolean verifyDataType, boolean stopAtFirstError) {

          this.parser = new RDFa11Parser();

          this.verifyDataType   = verifyDataType;

          this.stopAtFirstError = stopAtFirstError;

      }

      /**

       * Default constructor, with no verification of data types and not stop at first error.

       */

      public RDFa11Extractor() {

          this(false, false);

      }

      public boolean isVerifyDataType() {

          return verifyDataType;

      }

      public void setVerifyDataType(boolean verifyDataType) {

          this.verifyDataType = verifyDataType;

      }

      public boolean isStopAtFirstError() {

          return stopAtFirstError;

      }

      public void setStopAtFirstError(boolean stopAtFirstError) {

          this.stopAtFirstError = stopAtFirstError;

      }

      public void run(

              ExtractionParameters extractionParameters,

              ExtractionContext extractionContext,

              Document in,

              ExtractionResult out

      ) throws IOException, ExtractionException {

          try {

              parser.processDocument( new URL(extractionContext.getDocumentURI().toString() ), in, out );

          } catch (RDFa11ParserException rpe) {

              throw new ExtractionException("Error while performing extraction.", rpe);

          }

      }

      /**

       * @return the {@link org.apache.any23.extractor.ExtractorDescription} of this extractor

       */

      public ExtractorDescription getDescription() {

          return factory;

      }

 }