text: /*                                                                         
   * 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.
   */
  
  (function () {
  
      var PipelineStage = require(EclairJS_Globals.NAMESPACE + '/ml/PipelineStage');
      var Logger = require(EclairJS_Globals.NAMESPACE + '/Logger');
      var Utils = require(EclairJS_Globals.NAMESPACE + '/Utils');
  
  
      /**
       * @classdesc
       * A label indexer that maps a string column of labels to an ML column of label indices.
       * If the input column is numeric, we cast it to string and index the string values.
       * The indices are in [0, numLabels), ordered by label frequencies.
       * So the most frequent label gets index 0.
       *
       * @see {@link module:eclairjs/ml/feature.IndexToString} for the inverse transformation
       * @class
       * @extends module:eclairjs/ml.PipelineStage
       * @memberof module:eclairjs/ml/feature
       * @param {string} [uid]
       */
      var StringIndexer = function (uid) {
          this.logger = Logger.getLogger("ml.feature.StringIndexer_js");
          var jvmObject;
          if (uid) {
              if (uid instanceof org.apache.spark.ml.feature.StringIndexer) {
                  jvmObject = uid;
              } else {
                  jvmObject = new org.apache.spark.ml.feature.StringIndexer(uid);
              }
          } else {
              jvmObject = new org.apache.spark.ml.feature.StringIndexer();
          }
  
          PipelineStage.call(this, jvmObject);
  
      };
  
      StringIndexer.prototype = Object.create(PipelineStage.prototype);
  
      StringIndexer.prototype.constructor = StringIndexer;
  
      /**
       * An immutable unique ID for the object and its derivatives.
       * @returns {string}
       */
      StringIndexer.prototype.uid = function () {
          return this.getJavaObject().uid();
      };
  
  
      /**
       * @param {string} value
       * @returns {module:eclairjs/ml/feature.StringIndexer}
       */
      StringIndexer.prototype.setHandleInvalid = function (value) {
          var javaObject = this.getJavaObject().setHandleInvalid(value);
          return new StringIndexer(javaObject);
      };
  
  
      /**
       * @param {string} value
       * @returns {module:eclairjs/ml/feature.StringIndexer}
       */
      StringIndexer.prototype.setInputCol = function (value) {
          var javaObject = this.getJavaObject().setInputCol(value);
          return new StringIndexer(javaObject);
      };
  
  
      /**
       * @param {string} value
       * @returns {module:eclairjs/ml/feature.StringIndexer}
       */
      StringIndexer.prototype.setOutputCol = function (value) {
          var javaObject = this.getJavaObject().setOutputCol(value);
          return new StringIndexer(javaObject);
      };
  
  
      /**
       * @param {module:eclairjs/sql.Dataset} dataset
       * @returns {module:eclairjs/ml/feature.StringIndexerModel}
       */
      StringIndexer.prototype.fit = function (dataset) {
          var dataset_uw = Utils.unwrapObject(dataset);
          return Utils.javaToJs(this.getJavaObject().fit(dataset_uw));
      };
  
  
      /**
       * @param {module:eclairjs/sql/types.StructType} schema
       * @returns {module:eclairjs/sql/types.StructType}
       */
      StringIndexer.prototype.transformSchema = function (schema) {
          var schema_uw = Utils.unwrapObject(schema);
          var javaObject = this.getJavaObject().transformSchema(schema_uw);
          return Utils.javaToJs(javaObject);
      };
  
  
      /**
       * @param {module:eclairjs/ml/param.ParamMap} extra
       * @returns {module:eclairjs/ml/feature.StringIndexer}
       */
      StringIndexer.prototype.copy = function (extra) {
          var extra_uw = Utils.unwrapObject(extra);
          return Utils.javaToJs(this.getJavaObject().copy(extra_uw));
      };
  
      /**
       * @param {module:eclairjs/sql/types.StructType} schema
       * @returns {module:eclairjs/sql/types.StructType}
       */
      StringIndexer.prototype.validateAndTransformSchema = function (schema) {
          var schema_uw = Utils.unwrapObject(schema);
          var javaObject = this.getJavaObject().validateAndTransformSchema(schema_uw);
          return Utils.javaToJs(javaObject);
      };
  
      /**
       * @returns {module:eclairjs/ml/param.Param}
       */
      StringIndexer.prototype.inputCol = function () {
          var javaObject = this.getJavaObject().inputCol();
          return Utils.javaToJs(javaObject);
      };
  
      /**
       * @returns {string}
       */
      StringIndexer.prototype.getInputCol = function () {
          return this.getJavaObject().getInputCol();
      };
  
      /**
       * @returns {module:eclairjs/ml/param.Param}
       */
      StringIndexer.prototype.outputCol = function () {
          var javaObject = this.getJavaObject().outputCol();
          return Utils.javaToJs(javaObject);
      };
  
      /**
       * @returns {string}
       */
      StringIndexer.prototype.getOutputCol = function () {
          return this.getJavaObject().getOutputCol();
      };
  
      /**
       * Param for how to handle invalid entries. Options are skip (which will filter out rows with bad values),
       * or error (which will throw an errror). More options may be added later..
       * @returns {module:eclairjs/ml/param.Param}
       */
      StringIndexer.prototype.handleInvalid = function () {
          var javaObject = this.getJavaObject().handleInvalid();
          return Utils.javaToJs(javaObject);
      };
  
      /**
       * @returns {string}
       */
      StringIndexer.prototype.getHandleInvalid = function () {
          return this.getJavaObject().getHandleInvalid();
      };
  
      //
      // static methods
      //
  
  
      /**
       * @param {string} path
       * @returns {module:eclairjs/ml/feature.StringIndexer}
       */
      StringIndexer.load = function (path) {
          return org.apache.spark.ml.feature.StringIndexer.load(path);
      };
  
      module.exports = StringIndexer;
  })();