Index: src/java/org/apache/nutch/indexer/IndexerChecker.java
===================================================================
--- src/java/org/apache/nutch/indexer/IndexerChecker.java	(revision 0)
+++ src/java/org/apache/nutch/indexer/IndexerChecker.java	(revision 0)
@@ -0,0 +1,125 @@
+package org.apache.nutch.indexer;
+
+import java.util.List;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.conf.Configured;
+import org.apache.hadoop.io.Text;
+import org.apache.hadoop.util.Tool;
+import org.apache.hadoop.util.ToolRunner;
+import org.apache.nutch.crawl.CrawlDatum;
+import org.apache.nutch.crawl.Inlinks;
+import org.apache.nutch.indexer.IndexingException;
+import org.apache.nutch.indexer.IndexingFilters;
+import org.apache.nutch.indexer.NutchDocument;
+import org.apache.nutch.parse.Parse;
+import org.apache.nutch.parse.ParseResult;
+import org.apache.nutch.parse.ParseUtil;
+import org.apache.nutch.protocol.Content;
+import org.apache.nutch.protocol.Protocol;
+import org.apache.nutch.protocol.ProtocolFactory;
+import org.apache.nutch.util.NutchConfiguration;
+
+/**
+ * Reads and parses a URL and run the indexers on it. Displays the fields obtained and the first
+ * 100 characters of their value
+ * 
+ * Tested with e.g. ./nutch org.apache.nutch.indexer.IndexerChecker http://www.lemonde.fr
+ * @author Julien Nioche
+ **/
+
+public class IndexerChecker extends Configured implements Tool {
+  
+  public static final Log LOG = LogFactory.getLog(IndexerChecker.class);
+  
+  public IndexerChecker() {
+
+  }
+  
+  public int run(String[] args) throws Exception {
+    
+    String contentType = null;
+    String url = null;
+    
+    String usage = "Usage: IndexerChecker url";
+    
+    if (args.length != 1) {
+      System.err.println(usage);
+      System.exit(-1);
+    }
+    
+    url = args[0];
+    
+    if (LOG.isInfoEnabled()) {
+      LOG.info("fetching: " + url);
+    }
+        
+    IndexingFilters indexers = new IndexingFilters(conf);
+    
+    ProtocolFactory factory = new ProtocolFactory(conf);
+    Protocol protocol = factory.getProtocol(url);
+    CrawlDatum datum = new CrawlDatum();
+    
+    Content content = protocol.getProtocolOutput(new Text(url), datum)
+        .getContent();
+    
+    if (content == null) {
+      System.out.println("No content for " + url);
+      return 0;
+    }
+    
+    contentType = content.getContentType();
+    
+    if (contentType == null) {
+      return -1;
+    }
+    
+    if (LOG.isInfoEnabled()) {
+      LOG.info("parsing: " + url);
+      LOG.info("contentType: " + contentType);
+    }
+    
+    ParseResult parseResult = new ParseUtil(conf).parse(content);
+    
+    NutchDocument doc = new NutchDocument();
+    Text urlText = new Text(url);
+    
+    Inlinks inlinks = null;
+    Parse parse = parseResult.get(urlText);
+    try {
+      indexers.filter(doc, parse, urlText, datum, inlinks);
+    } catch (IndexingException e) {
+      e.printStackTrace();
+    }
+    
+    for (String fname : doc.getFieldNames()) {
+      List<String> values = doc.getFieldValues(fname);
+      if (values != null) {
+        for (String value : values){
+          int minText = Math.min(100, value.length());
+          System.out.println(fname + " :\t" + value.substring(0, minText));
+        }
+      }
+    }
+    return 0;
+  }
+  
+  public static void main(String[] args) throws Exception {
+    final int res = ToolRunner.run(NutchConfiguration.create(),
+        new IndexerChecker(), args);
+    System.exit(res);
+  }
+  
+  Configuration conf;
+  
+  public Configuration getConf() {
+    return conf;
+  }
+  
+  @Override
+  public void setConf(Configuration arg0) {
+    conf = arg0;
+  }
+}