/*
 * 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.paimon.spark.catalog.functions

import org.apache.paimon.catalog.Identifier

import org.apache.spark.sql.catalyst.FunctionIdentifier

/**
 * Converts a Spark [[FunctionIdentifier]] to a Paimon [[Identifier]] (shared by file & SQL
 * functions).
 */
object FunctionIdentifierConverter {

  def toPaimonIdentifier(funcIdent: FunctionIdentifier): Identifier = {
    require(
      funcIdent.database.isDefined,
      s"Function identifier $funcIdent must have a database/namespace.")
    new Identifier(funcIdent.database.get, funcIdent.funcName)
  }
}
