DataSourceRegister Contract — Registering Data Source Format

DataSourceRegister is a contract to register a DataSource provider under shortName alias (so it can be looked up by the alias not its fully-qualified class name).

package org.apache.spark.sql.sources

trait DataSourceRegister {
  def shortName(): String

Data Source Format Discovery — Registering Data Source By Short Name (Alias)

FIXME Describe how Java’s ServiceLoader works to find all DataSourceRegister provider classes on the CLASSPATH.

Any DataSourceRegister has to register itself in META-INF/services/org.apache.spark.sql.sources.DataSourceRegister file to…​FIXME

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