com.crealytics.spark.v2.excel.ExcelDataSource.scala Maven / Gradle / Ivy
/** Copyright 2016 - 2021 Martin Mauch (@nightscape)
*
* 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.crealytics.spark.v2.excel
import org.apache.spark.sql.connector.catalog.Table
import org.apache.spark.sql.execution.datasources.FileFormat
import org.apache.spark.sql.execution.datasources.v2.FileDataSourceV2
import org.apache.spark.sql.types.StructType
import org.apache.spark.sql.util.CaseInsensitiveStringMap
/** Derived from Spark own CSV implementation
*/
class ExcelDataSource extends FileDataSourceV2 {
override def fallbackFileFormat: Class[_ <: FileFormat] = classOf[ExcelFileFormat]
override def getTable(options: CaseInsensitiveStringMap): Table = {
val paths = getPaths(options)
val tableName = getTableName(options, paths)
val optionsWithoutPaths = getOptionsWithoutPaths(options)
ExcelTable(tableName, sparkSession, optionsWithoutPaths, paths, None)
}
override def getTable(options: CaseInsensitiveStringMap, schema: StructType): Table = {
val paths = getPaths(options)
val tableName = getTableName(options, paths)
val optionsWithoutPaths = getOptionsWithoutPaths(options)
ExcelTable(tableName, sparkSession, optionsWithoutPaths, paths, Some(schema))
}
/** The string that represents the format that this data source provider uses
*/
override def shortName(): String = "excel"
}