Examples of nux.xom.pool.DocumentMap

nux.xom.pool.DocumentMap
lib compression config.setMaxEntries(10000); // max 10000 documents config.setCapacity(100 * 1024 * 1024); // max 100 MB capacity config.setMaxIdleTime(60 * 1000); // keep inactive entries for at most 60 secs config.setMaxLifeTime(60 * 60 * 1000); // keep any entry for at most 1 hour config.setFileMonitoring(true); // auto-remove cached files on file modification DocumentMap map = new DocumentMap(config); File key = new File("samples/data/periodic.xml"); // file to parse Document doc = map.getDocument(key); if (doc == null) { // not yet cached // build document from source doc = BuilderPool.GLOBAL_POOL.getBuilder(false).build(key); // cache it for future reuse map.putDocument(key, doc); } // do something useful with the document System.out.println(doc.toXML()); Note: Internally uses extremely short-lived locks; the resulting potential lock contention is completely negligible. @author whoschek.AT.lbl.DOT.gov @author $Author: hoschek3 $ @version $Revision: 1.35 $, $Date: 2005/12/10 01:05:49 $

        }
      }
    };
    
    return new DocumentPool(
      new DocumentMap(
        new PoolConfig().
          setCompressionLevel(docPoolCompression).
          setCapacity(docPoolCapacity)), 
        docFactory);
  }

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    if (args.length > ++k) config.setMaxIdleTime(Long.parseLong(args[k]));
    
    if (args.length > ++k) config.setMaxLifeTime(Long.parseLong(args[k]));
    
    final DocumentMap pool = new DocumentMap(config);
    
    final File[] files = new File[numFiles];
    new File("tmp").mkdir();
    for (int j=0; j < numFiles; j++) {
      files[j] = new File("tmp/file" + j + ".xml");
      System.out.println("writing " + files[j]);
      FileWriter out = new FileWriter(files[j]);
      out.write("<hello/>");
      out.flush();
      out.close();
    }
    
    for (int j=0; j < threads; j++) {
      final int t = j;
      Runnable runner = new Runnable() {
        public void run() {
          try {
            Builder builder = new Builder();
            int i = 0;
            while (i < files.length) {
              System.out.println("t="+ t + ", index="+i);
              Document doc = builder.build(files[i]);
              Object key = files[i];
              pool.putDocument(key, doc);
              i++;
            }
            System.out.println("done");
          }
          catch (Throwable t) {

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    if (args.length > ++k) config.setMaxLifeTime(Long.parseLong(args[k]));
    
    int printStep = 10;
    if (args.length > ++k) printStep = Math.max(1, Integer.parseInt(args[k]));
    
    final DocumentMap pool = new DocumentMap(config);
    
    for (int j=0; j < threads; j++) {
      final int t = j;
      final Document xmlDoc = doc;
      final int step = printStep;
      Runnable runner = new Runnable() {
        public void run() {
          try {
            int i = 0;
            while (true) {
              if (i % step == 0) System.out.println("t="+ t + ", index=" + i);
              Document doc;
              if (xmlDoc == null) {
                Element root = new Element("root");
                Element child = new Element("child");
                root.appendChild(child);
                for (int j=0; j < 10000; j++) child.appendChild("xxxxxxxxxxxxxxxxxx" + j);
                doc = new Document(root);
              }
              else {
                doc = xmlDoc;
                if (config.getCompressionLevel() == -1) doc = new Document(doc);
              }
              
              Object key = new Integer(i + t*100);
//              Object key = new Integer(-1);
              pool.putDocument(key, doc);
              
//              // simulate hot cache items (gc should bias against collecting these)
              pool.getDocument(new Integer(8)); 
              
//              pool.getDocument(key);
              i++;
            }
          }

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Related Classes of nux.xom.pool.DocumentMap

nux.xom.sandbox.DocumentMapFileMonitorTest

nux.xom.sandbox.DocumentMapTest

nux.xom.tests.XQueryCommand

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