content: /*
   * 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.asterix.runtime.evaluators.functions;
  
  import java.io.IOException;
  
  import org.apache.asterix.formats.nontagged.SerializerDeserializerProvider;
  import org.apache.asterix.om.base.ABoolean;
  import org.apache.asterix.om.types.BuiltinType;
  import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
  import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory;
  import org.apache.hyracks.api.context.IEvaluatorContext;
  import org.apache.hyracks.api.dataflow.value.ISerializerDeserializer;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.api.exceptions.SourceLocation;
  import org.apache.hyracks.data.std.api.IPointable;
  import org.apache.hyracks.data.std.primitive.UTF8StringPointable;
  
  public abstract class AbstractBinaryStringBoolEval extends AbstractBinaryStringEval {
  
      // For outputting results.
      @SuppressWarnings({ "rawtypes" })
      private ISerializerDeserializer boolSerde =
              SerializerDeserializerProvider.INSTANCE.getSerializerDeserializer(BuiltinType.ABOOLEAN);
  
      public AbstractBinaryStringBoolEval(IEvaluatorContext context, IScalarEvaluatorFactory evalLeftFactory,
              IScalarEvaluatorFactory evalRightFactory, FunctionIdentifier funcID, SourceLocation sourceLoc)
              throws HyracksDataException {
          super(context, evalLeftFactory, evalRightFactory, funcID, sourceLoc);
      }
  
      @Override
      public void process(UTF8StringPointable leftPtr, UTF8StringPointable rightPtr, IPointable result)
              throws IOException {
          ABoolean res = compute(leftPtr, rightPtr) ? ABoolean.TRUE : ABoolean.FALSE;
          boolSerde.serialize(res, dataOutput);
          result.set(resultStorage);
      }
  
      /**
       * Computes a boolean value from two input strings.
       *
       * @param left
       *            , the first input argument.
       * @param right
       *            , the second input argument.
       * @return a boolean value.
       * @throws HyracksDataException
       */
      protected abstract boolean compute(UTF8StringPointable left, UTF8StringPointable right) throws HyracksDataException;
  
  }
  