spark PostgresConnectionProvider 源码
spark PostgresConnectionProvider 代码
文件路径：/sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/jdbc/connection/PostgresConnectionProvider.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.jdbc.connection
import java.sql.Driver
import java.util.Properties
import org.apache.spark.sql.execution.datasources.jdbc.JDBCOptions
private[jdbc] class PostgresConnectionProvider extends SecureConnectionProvider {
override val driverClass = "org.postgresql.Driver"
override val name: String = "postgres"
override def appEntry(driver: Driver, options: JDBCOptions): String = {
val parseURL = driver.getClass.getMethod("parseURL", classOf[String], classOf[Properties])
val properties = parseURL.invoke(driver, options.url, null).asInstanceOf[Properties]
properties.getProperty("jaasApplicationName", "pgjdbc")
}
}
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