/*
* Copyright 2016 IBM Corp.
*
* 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.
*/
module.exports = function(kernelP) {
return (function() {
var Utils = require('../utils.js');
var PipelineStage = require('./PipelineStage')();
/**
* @classdesc
* Abstract class for transformers that transform one dataset into another.
* @class
* @memberof module:eclairjs/ml
* @extends module:eclairjs/ml.PipelineStage
*/
function Transformer() {
Utils.handleAbstractConstructor(this, arguments);
}
Transformer.prototype = Object.create(PipelineStage.prototype);
Transformer.prototype.constructor = Transformer;
/**
* Transforms the dataset with optional parameters
* @param {module:eclairjs/sql.Dataset} dataset input dataset
* @param {module:eclairjs/ml/param.ParamMap | module:eclairjs/ml/param.ParamPair} [params] additional parameters, overwrite embedded params, overwrite embedded params
* @param {...module:eclairjs/ml/param.ParamPair} [otherParamPairs] other param pairs, Only used if argument two is {@link module:eclairjs/ml/param.ParamPair}. Overwrite embedded params
* @returns {module:eclairjs/sql.Dataset} transformed dataset
*/
Transformer.prototype.transform = function() {
var Dataset = require('../sql/Dataset');
var args = {
target: this,
method: 'transform',
args: Utils.wrapArguments(arguments),
returnType: Dataset
};
return Utils.generate(args);
};
/**
* @param {module:eclairjs/ml/param.ParamMap} extra
* @returns {module:eclairjs/ml.Transformer}
*/
Transformer.prototype.copy = function(extra) {
var args = {
target: this,
method: 'copy',
args: Utils.wrapArguments(arguments),
returnType: Utils.getContextClass(this)
};
return Utils.generate(args);
};
return Transformer;
})();
};