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The official Couchbase Java SDK
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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.text.ParseException;
import java.util.logging.Logger;

import net.spy.memcached.ops.OperationCallback;
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;

/**
 * A ViewOperationImpl.
 *
 */
public abstract class ViewOperationImpl extends HttpOperationImpl
  implements ViewOperation {

  private final AbstractView view;

  protected static final Logger LOGGER = Logger.getLogger(
    ViewOperationImpl.class.getName());

  public ViewOperationImpl(HttpRequest r, AbstractView view,
    OperationCallback cb) {
    super(r, cb);
    this.view = view;
  }

  public AbstractView getView() {
    return view;
  }

  @Override
  public void handleResponse(HttpResponse response) {
    String json = getEntityString(response);
    int errorcode = response.getStatusLine().getStatusCode();
    try {
      OperationStatus status = parseViewForStatus(json, errorcode);
      ViewResponse vr = null;
      if (status.isSuccess()) {
        vr = parseResult(json);
      } else {
        parseError(json, errorcode);
      }

      ((ViewCallback) callback).gotData(vr);
      callback.receivedStatus(status);
    } catch (ParseException e) {
      setException(new OperationException(OperationErrorType.GENERAL,
          "Error parsing JSON"));
    }
    callback.complete();
  }

  protected abstract void parseError(String json, int errorcode)
    throws ParseException;

  protected abstract ViewResponse parseResult(String json)
    throws ParseException;
}