/**
* 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.exec;
import org.apache.hadoop.hive.ql.exec.FunctionInfo;
import org.apache.hadoop.hive.ql.exec.WindowFunctionDescription;
import org.apache.hadoop.hive.ql.udf.generic.GenericUDAFResolver;
@SuppressWarnings("deprecation")
public class WindowFunctionInfo
{
boolean supportsWindow = true;
boolean pivotResult = false;
FunctionInfo fInfo;
WindowFunctionInfo(FunctionInfo fInfo)
{
assert fInfo.isGenericUDAF();
this.fInfo = fInfo;
Class<? extends GenericUDAFResolver> wfnCls = fInfo.getGenericUDAFResolver().getClass();
WindowFunctionDescription def = wfnCls.getAnnotation(WindowFunctionDescription.class);
if ( def != null)
{
supportsWindow = def.supportsWindow();
pivotResult = def.pivotResult();
}
}
public boolean isSupportsWindow()
{
return supportsWindow;
}
public boolean isPivotResult()
{
return pivotResult;
}
public FunctionInfo getfInfo()
{
return fInfo;
}
}