streaming.source.parser.SourceParser.scala Maven / Gradle / Ivy
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/*
* 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,
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* See the License for the specific language governing permissions and
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*/
package streaming.source.parser
import org.apache.spark.sql.catalyst.expressions.Expression
import org.apache.spark.sql.{Column, Row}
import streaming.source.parser.impl.{CsvSourceParser, JsonSourceParser}
/**
* Created by allwefantasy on 14/9/2018.
*/
trait SourceParser extends Serializable {
def parse(column: Column, sourceSchema: SourceSchema, options: Map[String, String]): Column
def withExpr(expr: Expression): Column = new Column(expr)
}
object SourceParser {
def getSourceParser(name: String): SourceParser = {
if (name.contains(".")) {
Class.forName(name).newInstance().asInstanceOf[SourceParser]
} else {
name match {
case "json" => new JsonSourceParser()
case "csv" => new CsvSourceParser()
}
}
}
}