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From rxin <...@git.apache.org>
Subject [GitHub] spark pull request: [SPARK-10117][MLLIB] Implement SQL data source...
Date Sun, 06 Sep 2015 19:48:47 GMT
Github user rxin commented on a diff in the pull request:

    https://github.com/apache/spark/pull/8537#discussion_r38825351
  
    --- Diff: mllib/src/main/scala/org/apache/spark/ml/source/libsvm/package.scala ---
    @@ -0,0 +1,33 @@
    +/*
    + * Licensed to the Apache Software Foundation (ASF) under one or more
    + * contributor license agreements.  See the NOTICE file distributed with
    + * this work for additional information regarding copyright ownership.
    + * The ASF licenses this file to You 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.
    + */
    +
    +package org.apache.spark.ml.source
    +
    +import org.apache.spark.sql.{DataFrame, DataFrameReader}
    +
    +package object libsvm {
    +
    +  /**
    +   * Implicit declaration in order to be used from SQLContext.
    +   * It is necessary to import org.apache.spark.ml.source.libsvm._
    +   * @param read Given original DataFrameReader
    +   */
    +  implicit class LibSVMReader(read: DataFrameReader) {
    --- End diff --
    
    Yes - see https://github.com/apache/spark/blob/master/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/DefaultSource.scala#L27
    
    You also need to add them to a meta file like this https://github.com/apache/spark/blob/master/sql/core/src/main/resources/META-INF/services/org.apache.spark.sql.sources.DataSourceRegister



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