Android Open Source - ACM_Pi_Cloud Read Remote File Operation

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License

The source code is released under:

MIT License

Java Source Code

/* ownCloud Android Library is available under MIT license
 *   Copyright (C) 2014 ownCloud Inc.//from   w w  w .j  av  a 2  s  . c o  m
 *   
 *   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 DEALINGS IN
 *   THE SOFTWARE.
 *
 */
package com.owncloud.android.lib.resources.files;

import java.util.ArrayList;

import org.apache.http.HttpStatus;
import org.apache.jackrabbit.webdav.DavConstants;
import org.apache.jackrabbit.webdav.MultiStatus;
import org.apache.jackrabbit.webdav.client.methods.PropFindMethod;

import android.util.Log;

import com.owncloud.android.lib.common.OwnCloudClient;
import com.owncloud.android.lib.common.network.WebdavEntry;
import com.owncloud.android.lib.common.network.WebdavUtils;
import com.owncloud.android.lib.common.operations.RemoteOperation;
import com.owncloud.android.lib.common.operations.RemoteOperationResult;


/**
 * Remote operation performing the read a file from the ownCloud server.
 * 
 * @author David A. Velasco
 * @author masensio
 */

public class ReadRemoteFileOperation extends RemoteOperation {

    private static final String TAG = ReadRemoteFileOperation.class.getSimpleName();
    private static final int SYNC_READ_TIMEOUT = 10000;
    private static final int SYNC_CONNECTION_TIMEOUT = 5000;
    
    private String mRemotePath;
    
  
    /**
     * Constructor
     * 
     * @param remotePath    Remote path of the file. 
     */
    public ReadRemoteFileOperation(String remotePath) {
      mRemotePath = remotePath;
    }

    /**
     * Performs the read operation.
     * 
     * @param client    Client object to communicate with the remote ownCloud server.
     */
    @Override
    protected RemoteOperationResult run(OwnCloudClient client) {
      PropFindMethod propfind = null;
      RemoteOperationResult result = null;

      /// take the duty of check the server for the current state of the file there
      try {
        propfind = new PropFindMethod(client.getWebdavUri() + WebdavUtils.encodePath(mRemotePath),
            DavConstants.PROPFIND_ALL_PROP,
            DavConstants.DEPTH_0);
        int status;
        status = client.executeMethod(propfind, SYNC_READ_TIMEOUT, SYNC_CONNECTION_TIMEOUT);

        boolean isMultiStatus = status == HttpStatus.SC_MULTI_STATUS;
        if (isMultiStatus) {
          // Parse response
          MultiStatus resp = propfind.getResponseBodyAsMultiStatus();
        WebdavEntry we = new WebdavEntry(resp.getResponses()[0], client.getWebdavUri().getPath());
        RemoteFile remoteFile = new RemoteFile(we);
        ArrayList<Object> files = new ArrayList<Object>();
        files.add(remoteFile);

          // Result of the operation
          result = new RemoteOperationResult(true, status, propfind.getResponseHeaders());
          result.setData(files);
          
        } else {
          client.exhaustResponse(propfind.getResponseBodyAsStream());
          result = new RemoteOperationResult(false, status, propfind.getResponseHeaders());
        }

      } catch (Exception e) {
        result = new RemoteOperationResult(e);
        e.printStackTrace();
        Log.e(TAG, "Synchronizing  file " + mRemotePath + ": " + result.getLogMessage(), result.getException());
      } finally {
        if (propfind != null)
          propfind.releaseConnection();
      }
      return result;
    }

}

Java Source Code List

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