arangodb/js/actions.js

////////////////////////////////////////////////////////////////////////////////
/// @brief JavaScript actions functions
///
/// @file
///
/// DISCLAIMER
///
/// Copyright 2010-2011 triagens GmbH, Cologne, Germany
///
/// 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.
///
/// Copyright holder is triAGENS GmbH, Cologne, Germany
///
/// @author Dr. Frank Celler
/// @author Copyright 2011, triAGENS GmbH, Cologne, Germany
////////////////////////////////////////////////////////////////////////////////

// -----------------------------------------------------------------------------
// --SECTION--                                                  public functions
// -----------------------------------------------------------------------------

////////////////////////////////////////////////////////////////////////////////
/// @addtogroup V8Json V8 JSON
/// @{
////////////////////////////////////////////////////////////////////////////////

////////////////////////////////////////////////////////////////////////////////
/// @brief returns a result of a query as documents
////////////////////////////////////////////////////////////////////////////////

function queryResult (req, res, query) {
  var result;
  var offset = 0;
  var page = 0;
  var blocksize = 0;
  var t;
  var result;

  t = time();

  if (req.blocksize) {
    blocksize = req.blocksize;

    if (req.page) {
      page = req.page;
      offset = page * blocksize;
      query = query.skip(offset).limit(blocksize);
    }
    else {
      query = query.limit(blocksize);
    }
  }

  result = query.toArray();

  result = {
    total : query.count(),
    count : query.count(true),
    offset : offset,
    blocksize : blocksize,
    page : page,
    runtime : time() - t,
    documents : result
  };

  res.responseCode = 200;
  res.contentType = "application/json";
  res.body = JSON.stringify(result);
}

////////////////////////////////////////////////////////////////////////////////
/// @brief returns a result of a query as references
////////////////////////////////////////////////////////////////////////////////

function queryReferences (req, res, query) {
  var result;
  var offset = 0;
  var page = 0;
  var blocksize = 0;
  var t;
  var result;

  t = time();

  if (req.blocksize) {
    blocksize = req.blocksize;

    if (req.page) {
      page = req.page;
      offset = page * blocksize;
      query = query.skip(offset).limit(blocksize);
    }
    else {
      query = query.limit(blocksize);
    }
  }

  result = [];

  while (query.hasNext()) {
    result.push(query.nextRef());
  }

  result = {
    total : query.count(),
    count : query.count(true),
    offset : offset,
    blocksize : blocksize,
    page : page,
    runtime : time() - t,
    references : result
  };

  res.responseCode = 200;
  res.contentType = "application/json";
  res.body = JSON.stringify(result);
}

////////////////////////////////////////////////////////////////////////////////
/// @brief returns a result
////////////////////////////////////////////////////////////////////////////////

function actionResult (req, res, code, result) {
  if (code == 204) {
    res.responseCode = code;
  }
  else {
    res.responseCode = code;
    res.contentType = "application/json";
    res.body = JSON.stringify(result);
  }
}

////////////////////////////////////////////////////////////////////////////////
/// @brief returns an error
////////////////////////////////////////////////////////////////////////////////

function actionError (req, res, err) {
  res.responseCode = 500;
  res.contentType = "application/json";
  res.body = JSON.stringify({ 'error' : "" + err });
}

////////////////////////////////////////////////////////////////////////////////
/// @}
////////////////////////////////////////////////////////////////////////////////

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