is-null-predicate.h

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// Copyright 2012 Cloudera Inc.
//
// Licensed 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.


#ifndef IMPALA_EXPRS_IS_NULL_PREDICATE_H_
#define IMPALA_EXPRS_IS_NULL_PREDICATE_H_

#include <string>
#include "exprs/predicate.h"

namespace impala {

class IsNullPredicate {
 public:
  template<typename T> static BooleanVal IsNull(FunctionContext* ctx, const T& val);
  template<typename T> static BooleanVal IsNotNull(FunctionContext* ctx, const T& val);
};

}

#endif