// Copyright 2006 Google Inc.
//
// Licensed 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 com.google.enterprise.connector.jcr;
import com.google.enterprise.connector.spi.Document;
import com.google.enterprise.connector.spi.DocumentList;
import com.google.enterprise.connector.spi.RepositoryException;
import com.google.enterprise.connector.spi.SpiConstants;
import com.google.enterprise.connector.spi.Value;
import com.google.enterprise.connector.spiimpl.DateValue;
import org.json.JSONException;
import org.json.JSONObject;
import javax.jcr.Node;
import javax.jcr.NodeIterator;
public class JcrDocumentList implements DocumentList {
private Node startNode;
private final NodeIterator jcrIterator;
private Document document = null;
public JcrDocumentList(final Node thisNode, final NodeIterator nodes) {
startNode = thisNode;
jcrIterator = nodes;
}
public JcrDocumentList(final NodeIterator nodes) {
startNode = null;
jcrIterator = nodes;
}
public Document nextDocument() {
if (startNode != null) {
document = new JcrDocument(startNode);
startNode = null;
return document;
}
if (jcrIterator == null) {
return null;
}
if (jcrIterator.hasNext()) {
document = new JcrDocument(jcrIterator.nextNode());
return document;
}
return null;
}
public static String checkpoint(Document document) throws RepositoryException {
String uuid = Value.getSingleValueString(document,
SpiConstants.PROPNAME_DOCID);
DateValue dateValue = (DateValue) Value.getSingleValue(document,
SpiConstants.PROPNAME_LASTMODIFIED);
String dateString = dateValue.toIso8601();
String result = null;
try {
JSONObject jo = new JSONObject();
jo.put("uuid", uuid);
jo.put("lastModified", dateString);
result = jo.toString();
} catch (JSONException e) {
throw new RepositoryException("Unexpected JSON problem", e);
}
return result;
}
public String checkpoint() throws RepositoryException {
return checkpoint(document);
}
}