| /* |
| * 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.griffin.measure.step.write |
| |
| import scala.collection.mutable.ArrayBuffer |
| |
| import org.apache.spark.sql.Row |
| import org.apache.spark.sql.types.{ArrayType, DataType, StructField, StructType} |
| |
| /** |
| * spark row formatter |
| */ |
| object SparkRowFormatter { |
| |
| def formatRow(row: Row): Map[String, Any] = { |
| formatRowWithSchema(row, row.schema) |
| } |
| |
| private def formatRowWithSchema(row: Row, schema: StructType): Map[String, Any] = { |
| formatStruct(schema.fields, row) |
| } |
| |
| private def formatStruct(schema: Seq[StructField], r: Row) = { |
| val paired = schema.zip(r.toSeq) |
| paired.foldLeft(Map[String, Any]())((s, p) => s ++ formatItem(p)) |
| } |
| |
| private def formatItem(p: (StructField, Any)): Map[String, Any] = { |
| p match { |
| case (sf, a) => |
| sf.dataType match { |
| case ArrayType(et, _) => |
| Map( |
| sf.name -> |
| (if (a == null) a else formatArray(et, a.asInstanceOf[ArrayBuffer[Any]]))) |
| case StructType(s) => |
| Map(sf.name -> (if (a == null) a else formatStruct(s, a.asInstanceOf[Row]))) |
| case _ => Map(sf.name -> a) |
| } |
| } |
| } |
| |
| private def formatArray(et: DataType, arr: ArrayBuffer[Any]): Seq[Any] = { |
| et match { |
| case StructType(s) => arr.map(e => formatStruct(s, e.asInstanceOf[Row])) |
| case ArrayType(t, _) => |
| arr.map(e => formatArray(t, e.asInstanceOf[ArrayBuffer[Any]])) |
| case _ => arr |
| } |
| } |
| } |