com.couchbase.client.protocol.views.DesignDocFetcherOperationImpl Maven / Gradle / Ivy

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/**
 * Copyright (C) 2009-2013 Couchbase, Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALING
 * IN THE SOFTWARE.
 */

package com.couchbase.client.protocol.views;

import java.net.HttpURLConnection;
import java.text.ParseException;
import java.util.Iterator;
import net.spy.memcached.ops.OperationErrorType;
import net.spy.memcached.ops.OperationException;
import net.spy.memcached.ops.OperationStatus;
import org.apache.http.HttpRequest;
import org.apache.http.HttpResponse;
import org.codehaus.jettison.json.JSONException;
import org.codehaus.jettison.json.JSONObject;

/**
 * Implements the design doc fetching HTTP operation.
 */
public class DesignDocFetcherOperationImpl extends HttpOperationImpl
    implements DesignDocFetcherOperation {

  private final String designDocName;


  public DesignDocFetcherOperationImpl(HttpRequest r, String designDocName,
    DesignDocFetcherCallback designCallback) {
    super(r, designCallback);
    this.designDocName = designDocName;
  }

  @Override
  public void handleResponse(HttpResponse response) {
    String json = getEntityString(response);
    try {
      int errorcode = response.getStatusLine().getStatusCode();
      if (errorcode == HttpURLConnection.HTTP_OK) {
        DesignDocument design = parseDesignDocument(designDocName, json);
        ((DesignDocFetcherCallback) callback).gotData(design);
        callback.receivedStatus(new OperationStatus(true, "OK"));
      } else {
        callback.receivedStatus(new OperationStatus(false,
            Integer.toString(errorcode)));
      }
    } catch (ParseException e) {
      exception = new OperationException(OperationErrorType.GENERAL,
        "Error parsing JSON");
    }
    callback.complete();
  }

  private DesignDocument parseDesignDocument(String ddn, String json)
    throws ParseException {
    DesignDocument design = new DesignDocument(ddn);
    try {
      JSONObject base = new JSONObject(json);
      if (base.has("error")) {
        return null;
      }
      if(base.has("views")) {
        JSONObject views = base.getJSONObject("views");
        Iterator iterator = views.keys();
        while (iterator.hasNext()) {
          ViewDesign view;
          String name = (String) iterator.next();
          String map = (String) views.getJSONObject(name).get("map");
          if(views.getJSONObject(name).has("reduce")) {
            String reduce = (String) views.getJSONObject(name).get("reduce");
            view = new ViewDesign(name, map, reduce);
          } else {
            view = new ViewDesign(name, map);
          }
          design.setView(view);
        }
      }
      if(base.has("spatial")) {
        JSONObject views = base.getJSONObject("spatial");
        Iterator iterator = views.keys();
        while (iterator.hasNext()) {
          String name = (String) iterator.next();
          String map = (String) views.get(name);
          SpatialViewDesign view = new SpatialViewDesign(name, map);
          design.setSpatialView(view);
        }
      }
    } catch (JSONException e) {
      throw new ParseException("Cannot read json: " + json, 0);
    }
    return design;
  }
}