@Override
 public String toString() {
   if (map != null) {
     return map.toString();
   } else {
     return "[LAZY node " + identifier + "]";
   }
 }
 @Override
 public boolean containsKey(Object key) {
   if (JdbcIndexDefinition.this.identifier.equals(key)) return true;
   if (keys.containsKey(key)) return true;
   check();
   return map.containsKey(key);
 }
 @Override
 public String get(Object key) {
   if (JdbcIndexDefinition.this.identifier.equals(key)) return identifier;
   if (keys.containsKey(key)) return keys.get(key);
   check();
   return map.get(key);
 }
  @Override
  public org.mmbase.bridge.Node getNode(final Cloud userCloud, final Document doc) {
    String docId = doc.get("number");
    if (docId == null) {
      throw new IllegalArgumentException("No number found in " + doc);
    }
    LazyMap m = nodeCache.get(docId); //
    if (m == null) {
      Map<String, String> keys = new HashMap<String, String>();
      for (String keyWord : keyWords) {
        keys.put(keyWord, doc.get(keyWord));
      }
      m = new LazyMap(docId, keys);
      nodeCache.put(docId, m);
    }
    org.mmbase.bridge.Node node =
        new MapNode<String>(
            m,
            new MapNodeManager(userCloud, m) {
              @Override
              public boolean hasField(String name) {
                if (JdbcIndexDefinition.this.key.equals(name)) return true;
                return super.hasField(name);
              }

              @Override
              public org.mmbase.bridge.Field getField(String name) {
                if (map == null && JdbcIndexDefinition.this.key.equals(name)) {
                  org.mmbase.core.CoreField fd =
                      org.mmbase.core.util.Fields.createField(
                          name,
                          org.mmbase.core.util.Fields.classToType(Object.class),
                          org.mmbase.bridge.Field.TYPE_UNKNOWN,
                          org.mmbase.bridge.Field.STATE_VIRTUAL,
                          null);
                  return new org.mmbase.bridge.implementation.BasicField(fd, this);
                } else {
                  return super.getField(name);
                }
              }
            });
    if (log.isDebugEnabled()) {
      log.debug("Returning node for " + node);
    }
    return node;
  }
 JdbcIndexDefinition(
     DataSource ds,
     Element element,
     Set allIndexedFields,
     boolean storeText,
     boolean mergeText,
     Analyzer a,
     boolean isSub) {
   this.dataSource = ds;
   indexSql = element.getAttribute("sql");
   key = element.getAttribute("key");
   String elementId = element.getAttribute("identifier");
   identifier = "".equals(elementId) ? key : elementId;
   findSql = element.getAttribute("find");
   NodeList childNodes = element.getChildNodes();
   for (int k = 0; k < childNodes.getLength(); k++) {
     if (childNodes.item(k) instanceof Element) {
       Element childElement = (Element) childNodes.item(k);
       if ("field".equals(childElement.getLocalName())) {
         if (childElement.getAttribute("keyword").equals("true")) {
           keyWords.add(childElement.getAttribute("name"));
         }
         String m = childElement.getAttribute("multiple");
         if ("".equals(m)) m = "add";
         if (!m.equals("add")) {
           nonDefaultMultiples.put(
               childElement.getAttribute("name"), Indexer.Multiple.valueOf(m.toUpperCase()));
         }
         String b = childElement.getAttribute("boost");
         if (!b.equals("")) {
           boosts.put(childElement.getAttribute("name"), Float.valueOf(b));
         }
       } else if ("related".equals(childElement.getLocalName())) {
         subQueries.add(
             new JdbcIndexDefinition(
                 ds, childElement, allIndexedFields, storeText, mergeText, a, true));
       }
     }
   }
   this.analyzer = a;
   this.isSub = isSub;
   assert !isSub || "".equals(findSql);
 }
 protected void check() {
   if (map == null) {
     Connection connection = null;
     Statement statement = null;
     ResultSet results = null;
     try {
       connection = dataSource.getConnection();
       statement = connection.createStatement();
       long start = System.currentTimeMillis();
       String s = getFindSql(identifier);
       if (log.isTraceEnabled()) {
         log.trace("About to execute " + s + " because ", new Exception());
       }
       results = statement.executeQuery(s);
       ResultSetMetaData meta = results.getMetaData();
       map = new HashMap<String, String>();
       if (results.next()) {
         for (int i = 1; i <= meta.getColumnCount(); i++) {
           String value = org.mmbase.util.Casting.toString(results.getString(i));
           map.put(meta.getColumnName(i).toLowerCase(), value);
         }
       }
       long duration = (System.currentTimeMillis() - start);
       if (duration > 500) {
         log.warn("Executed " + s + " in " + duration + " ms");
       } else if (duration > 100) {
         log.debug("Executed " + s + " in " + duration + " ms");
       } else {
         log.trace("Executed " + s + " in " + duration + " ms");
       }
     } catch (Exception e) {
       throw new RuntimeException(e.getMessage(), e);
     } finally {
       if (results != null)
         try {
           results.close();
         } catch (Exception e) {
         }
       if (statement != null)
         try {
           statement.close();
         } catch (Exception e) {
         }
       if (connection != null)
         try {
           connection.close();
         } catch (Exception e) {
         }
     }
   }
 }
 @Override
 public int size() {
   check();
   return map.size();
 }
 @Override
 public Set<Map.Entry<String, String>> entrySet() {
   check();
   return map.entrySet();
 }