OServerCommandGetCluster.java example

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orientdb-master
/*
 *
 *  *  Copyright 2014 Orient Technologies LTD (info(at)orientechnologies.com)
 *  *
 *  *  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.
 *  *
 *  * For more information: http://www.orientechnologies.com
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package com.orientechnologies.orient.server.network.protocol.http.command.get;

import com.orientechnologies.orient.core.db.document.ODatabaseDocument;
import com.orientechnologies.orient.core.db.document.ODatabaseDocumentTx;
import com.orientechnologies.orient.core.db.record.OIdentifiable;
import com.orientechnologies.orient.core.record.ORecord;
import com.orientechnologies.orient.server.network.protocol.http.OHttpRequest;
import com.orientechnologies.orient.server.network.protocol.http.OHttpResponse;
import com.orientechnologies.orient.server.network.protocol.http.OHttpUtils;
import com.orientechnologies.orient.server.network.protocol.http.command.OServerCommandAuthenticatedDbAbstract;

import java.util.ArrayList;
import java.util.List;

public class OServerCommandGetCluster extends OServerCommandAuthenticatedDbAbstract {
  private static final String[] NAMES = { "GET|cluster/*" };

  @Override
  public boolean execute(final OHttpRequest iRequest, OHttpResponse iResponse) throws Exception {
    String[] urlParts = checkSyntax(
        iRequest.url,
        3,
        "Syntax error: cluster/<database>/<cluster-name>[/<limit>]<br>Limit is optional and is setted to 20 by default. Set expressely to 0 to have no limits.");

    iRequest.data.commandInfo = "Browse cluster";
    iRequest.data.commandDetail = urlParts[2];

    ODatabaseDocument db = null;

    try {
      db = getProfiledDatabaseInstance(iRequest);

      if (db.getClusterIdByName(urlParts[2]) > -1) {
        final int limit = urlParts.length > 3 ? Integer.parseInt(urlParts[3]) : 20;

        final List<OIdentifiable> response = new ArrayList<OIdentifiable>();
        for (ORecord rec : db.browseCluster(urlParts[2])) {
          if (limit > 0 && response.size() >= limit)
            break;

          response.add(rec);
        }

        iResponse.writeRecords(response);
      } else
        iResponse.send(OHttpUtils.STATUS_NOTFOUND_CODE, null, null, null, null);

    } finally {
      if (db != null)
        db.close();
    }
    return false;
  }

  @Override
  public String[] getNames() {
    return NAMES;
  }
}