hdb/lib/protocol/data/Int32.js

SAP HANA Database Client for Node

// Copyright 2013 SAP AG.
//
// 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.
'use strict';

exports.read = read;
exports.write = write;
exports.getByteLength = getByteLength;
exports.getArgumentCount = getArgumentCount;

function read(part) {
  if (part.argumentCount === 1) {
    return part.buffer.readInt32LE(0);
  }
  var offset = 0;
  var buffer = part.buffer;
  var args = [];
  for (var i = 0; i < part.argumentCount; i++) {
    args.push(buffer.readInt32LE(offset));
    offset += 4;
  }
  return args;
}

function write(part, value) {
  /* jshint validthis:true */
  if (typeof value === 'undefined') {
    value = this;
  }
  part = part || {};
  part.argumentCount = getArgumentCount(value);
  part.buffer = new Buffer(4);
  part.buffer.writeInt32LE(value, 0);
  return part;
}

function getByteLength(value) {
  /* jshint unused:false */
  return 4;
}

function getArgumentCount(value) {
  /* jshint unused:false */
  return 1;
}