| /* |
| 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: Tuple2[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 |
| } |
| } |
| } |