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https://issues.apache.org/jira/browse/NUTCH-1129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16320570#comment-16320570
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ASF GitHub Bot commented on NUTCH-1129:
---------------------------------------
lewismc commented on a change in pull request #205: WIP: NUTCH-1129 microdata
for Nutch 1.x
URL: https://github.com/apache/nutch/pull/205#discussion_r160731346
##########
File path:
src/plugin/any23/src/java/org/apache/nutch/any23/Any23ParseFilter.java
##########
@@ -0,0 +1,175 @@
+/**
+ * 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.nutch.any23;
+
+import java.io.*;
+import java.net.URISyntaxException;
+import java.nio.charset.Charset;
+import java.util.Set;
+import java.util.TreeSet;
+import java.util.Collections;
+
+import org.apache.any23.Any23;
+import org.apache.any23.extractor.ExtractionException;
+import org.apache.any23.writer.BenchmarkTripleHandler;
+import org.apache.any23.writer.NTriplesWriter;
+import org.apache.any23.writer.TripleHandler;
+import org.apache.any23.writer.TripleHandlerException;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.nutch.metadata.Metadata;
+import org.apache.nutch.parse.HTMLMetaTags;
+import org.apache.nutch.parse.HtmlParseFilter;
+import org.apache.nutch.parse.Parse;
+import org.apache.nutch.parse.ParseResult;
+import org.apache.nutch.protocol.Content;
+import org.ccil.cowan.tagsoup.XMLWriter;
+import org.ccil.cowan.tagsoup.jaxp.SAXParserImpl;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import org.w3c.dom.DocumentFragment;
+import org.xml.sax.InputSource;
+import org.xml.sax.SAXException;
+import org.xml.sax.XMLReader;
+
+/**
+ * <p>This implementation of {@link org.apache.nutch.parse.HtmlParseFilter}
+ * uses the <a href="http://any23.apache.org";>Apache Any23</a> library
+ * for parsing and extracting structured data in RDF format from a
+ * variety of Web documents. The supported formats can be found at <a
href="http://any23.apache.org";>Apache Any23</a>.
+ * <p>In this implementation triples are written as Notation3 e.g.
+ * <code><http://www.bbc.co.uk/news/scotland/>
<http://iptc.org/std/rNews/2011-10-07#datePublished> "2014/03/31
13:53:03"@en-gb .</code>
+ * and triples are identified within output triple streams by the presence of
'\n'.
+ * The presence of the '\n' is a characteristic specific to N3 serialization
in Any23.
+ * In order to use another/other writers implementing the
+ * <a
href="http://any23.apache.org/apidocs/index.html?org/apache/any23/writer/TripleHandler.html";>TripleHandler</a>
+ * interface, we will most likely need to identify an alternative data
characteristic
+ * which we can use to split triples streams.</p>
+ * <p>
+ */
+public class Any23ParseFilter implements HtmlParseFilter {
+
+ /** Logging instance */
+ public static final Logger LOG =
LoggerFactory.getLogger(Any23ParseFilter.class);
+
+ private Configuration conf = null;
+
+ /**
+ * Constant identifier used as a Key for writing and reading
+ * triples to and from the metadata Map field.
+ */
+ public final static String ANY23_TRIPLES = "Any23-Triples";
+
+ public static final String ANY_23_EXTRACTORS_CONF = "any23.extractors";
Review comment:
If we are going to introduce a new option we need to actually include it in
```nutch-default.xml```
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> Any23 Nutch plugin
> ------------------
>
> Key: NUTCH-1129
> URL: https://issues.apache.org/jira/browse/NUTCH-1129
> Project: Nutch
> Issue Type: New Feature
> Components: parser
> Reporter: Lewis John McGibbney
> Assignee: Lewis John McGibbney
> Priority: Minor
> Fix For: 2.5
>
> Attachments: NUTCH-1129.patch
>
>
> This plugin should build on the Any23 library to provide us with a plugin
> which extracts RDF data from HTTP and file resources. Although as of writing
> Any23 not part of the ASF, the project is working towards integration into
> the Apache Incubator. Once the project proves its value, this would be an
> excellent addition to the Nutch 1.X codebase.
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