Function defineInstanceMembers

lib/encoder.js:156–1667

* Declares the privileged instance members. * @private

()

 * @private
 */
function defineInstanceMembers() {
  /**
   * Sets the protocol version and the encoding/decoding methods depending on the protocol version
   * @param {Number} value
   * @ignore
   * @internal
   */
  this.setProtocolVersion = function (value) {
    this.protocolVersion = value;
    //Set the collection serialization based on the protocol version
    this.decodeCollectionLength = decodeCollectionLengthV3;
    this.getLengthBuffer = getLengthBufferV3;
    this.collectionLengthSize = 4;
    if (!types.protocolVersion.uses4BytesCollectionLength(this.protocolVersion)) {
      this.decodeCollectionLength = decodeCollectionLengthV2;
      this.getLengthBuffer = getLengthBufferV2;
      this.collectionLengthSize = 2;
    }
  };

  const customDecoders = {
    [customTypeNames.duration]: decodeDuration,
    [customTypeNames.lineString]: decodeLineString,
    [customTypeNames.point]: decodePoint,
    [customTypeNames.polygon]: decodePolygon,
    [customTypeNames.dateRange]: decodeDateRange
  };

  const customEncoders = {
    [customTypeNames.duration]: encodeDuration,
    [customTypeNames.lineString]: encodeLineString,
    [customTypeNames.point]: encodePoint,
    [customTypeNames.polygon]: encodePolygon,
    [customTypeNames.dateRange]: encodeDateRange
  };

  // Decoding methods
  this.decodeBlob = function (bytes) {
    return this.handleBuffer(bytes);
  };

  /**
   * 
   * @param {Buffer} bytes 
   * @param {OtherCustomColumnInfo | VectorColumnInfo} columnInfo
   */
  this.decodeCustom = function (bytes, columnInfo) {

    // Make sure we actually have something to process in typeName before we go any further
    if (!columnInfo) {
      return this.handleBuffer(bytes);
    }

    // Special handling for vector custom types (since they have args)
    if ('customTypeName' in columnInfo && columnInfo.customTypeName === 'vector') {
      return this.decodeVector(bytes, columnInfo);
    }