spark SessionExtensionsWithoutLoader 源码

2022-10-20
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spark SessionExtensionsWithoutLoader 代码

文件路径：/examples/src/main/scala/org/apache/spark/examples/extensions/SessionExtensionsWithoutLoader.scala

/*
 * 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.examples.extensions

import org.apache.spark.sql.{SparkSessionExtensions, SparkSessionExtensionsProvider}
import org.apache.spark.sql.catalyst.FunctionIdentifier
import org.apache.spark.sql.catalyst.expressions.{Expression, ExpressionInfo}

class SessionExtensionsWithoutLoader extends SparkSessionExtensionsProvider {
  override def apply(v1: SparkSessionExtensions): Unit = {
    v1.injectFunction(
      (new FunctionIdentifier("age_one"),
        new ExpressionInfo(classOf[AgeExample].getName,
        "age_one"), (children: Seq[Expression]) => new AgeExample(children.head)))
  }
}

相关信息

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