com.johnsnowlabs.storage.HasStorageModel.scala Maven / Gradle / Ivy
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/*
* Copyright 2017-2022 John Snow Labs
*
* Licensed 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 com.johnsnowlabs.storage
import org.apache.spark.sql.SparkSession
trait HasStorageModel extends HasStorageReader with HasStorageOptions {
protected val databases: Array[Database.Name]
def serializeStorage(path: String, spark: SparkSession): Unit = {
if ($(includeStorage))
saveStorage(path, spark, withinStorage = true)
}
def saveStorage(path: String, spark: SparkSession, withinStorage: Boolean = false): Unit = {
databases.foreach(database => {
StorageHelper.save(path, getReader(database).getConnection, spark, withinStorage)
})
}
override protected def onWrite(path: String, spark: SparkSession): Unit = {
serializeStorage(path, spark)
}
def deserializeStorage(path: String, spark: SparkSession): Unit = {
if ($(includeStorage))
databases.foreach(database => {
StorageHelper.load(path, spark, database.toString, $(storageRef), withinStorage = true)
})
}
}