spark SourceOptions 源码
spark SourceOptions 代码
文件路径：/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/SourceOptions.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.sql.execution.datasources
import org.apache.spark.sql.catalyst.util.CaseInsensitiveMap
/**
* Options for the data source.
*/
class SourceOptions(
@transient private val parameters: CaseInsensitiveMap[String])
extends Serializable {
import SourceOptions._
def this(parameters: Map[String, String]) = this(CaseInsensitiveMap(parameters))
// A flag to disable saving a data source table's metadata in hive compatible way.
val skipHiveMetadata: Boolean = parameters
.get(SKIP_HIVE_METADATA).map(_.toBoolean).getOrElse(DEFAULT_SKIP_HIVE_METADATA)
// A flag to always respect the Spark schema restored from the table properties
val respectSparkSchema: Boolean = parameters
.get(RESPECT_SPARK_SCHEMA).map(_.toBoolean).getOrElse(DEFAULT_RESPECT_SPARK_SCHEMA)
}
object SourceOptions {
val SKIP_HIVE_METADATA = "skipHiveMetadata"
val DEFAULT_SKIP_HIVE_METADATA = false
val RESPECT_SPARK_SCHEMA = "respectSparkSchema"
val DEFAULT_RESPECT_SPARK_SCHEMA = false
}
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