/**
* 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.hadoop.hive.ql.udf;
import org.apache.hadoop.hive.ql.exec.UDFArgumentException;
import org.apache.hadoop.hive.serde2.typeinfo.TypeInfo;
/**
* THIS INTERFACE IS UNSTABLE AND SHOULD NOT BE USED BY 3RD PARTY UDFS.
* Interface to allow passing of parameters to the UDF, before it is initialized.
* For example, to be able to pass the char length parameters to a char type cast.
*/
public interface SettableUDF {
/**
* Add data to UDF prior to initialization.
* An exception may be thrown if the UDF doesn't know what to do with this data.
* @param params UDF-specific data to add to the UDF
*/
void setTypeInfo(TypeInfo typeInfo) throws UDFArgumentException;
TypeInfo getTypeInfo();
}