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.
   */
  /*
   * Numeric function Absolute value
   * Author : Xiaoyu Ma@UC Irvine
   * 01/30/2012
   */
  package org.apache.asterix.runtime.evaluators.functions;
  
  import org.apache.asterix.common.annotations.MissingNullInOutFunction;
  import org.apache.asterix.om.functions.BuiltinFunctions;
  import org.apache.asterix.om.functions.IFunctionDescriptorFactory;
  import org.apache.asterix.runtime.evaluators.base.AbstractScalarFunctionDynamicDescriptor;
  import org.apache.hyracks.algebricks.core.algebra.functions.FunctionIdentifier;
  import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator;
  import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory;
  import org.apache.hyracks.api.context.IEvaluatorContext;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.data.std.api.IPointable;
  
  @MissingNullInOutFunction
  public class NumericAbsDescriptor extends AbstractScalarFunctionDynamicDescriptor {
      private static final long serialVersionUID = 1L;
      public static final IFunctionDescriptorFactory FACTORY = NumericAbsDescriptor::new;
  
      @Override
      public FunctionIdentifier getIdentifier() {
          return BuiltinFunctions.NUMERIC_ABS;
      }
  
      @Override
      public IScalarEvaluatorFactory createEvaluatorFactory(IScalarEvaluatorFactory[] args) {
          return new IScalarEvaluatorFactory() {
              private static final long serialVersionUID = 1L;
  
              @Override
              public IScalarEvaluator createScalarEvaluator(IEvaluatorContext ctx) throws HyracksDataException {
                  return new NumericAbsEvaluator(ctx, args[0]);
              }
          };
      }
  
      private class NumericAbsEvaluator extends AbstractUnaryNumericFunctionEval {
  
          NumericAbsEvaluator(IEvaluatorContext context, IScalarEvaluatorFactory argEvalFactory)
                  throws HyracksDataException {
              super(context, argEvalFactory, NumericAbsDescriptor.this.getIdentifier(), sourceLoc);
          }
  
          @Override
          protected void processInt8(byte arg, IPointable resultPointable) throws HyracksDataException {
              if (arg >= 0) {
                  resultPointable.set(argPtr);
                  return;
              }
              aInt8.setValue((byte) (0 - arg));
              serialize(aInt8, int8Serde, resultPointable);
          }
  
          @Override
          protected void processInt16(short arg, IPointable resultPointable) throws HyracksDataException {
              if (arg >= 0) {
                  resultPointable.set(argPtr);
                  return;
              }
              aInt16.setValue((short) (0 - arg));
              serialize(aInt16, int16Serde, resultPointable);
          }
  
          @Override
          protected void processInt32(int arg, IPointable resultPointable) throws HyracksDataException {
              if (arg >= 0) {
                  resultPointable.set(argPtr);
                  return;
              }
              aInt32.setValue(0 - arg);
              serialize(aInt32, int32Serde, resultPointable);
          }
  
          @Override
          protected void processInt64(long arg, IPointable resultPointable) throws HyracksDataException {
              if (arg >= 0) {
                  resultPointable.set(argPtr);
                  return;
              }
              aInt64.setValue(0L - arg);
              serialize(aInt64, int64Serde, resultPointable);
          }
  
          @Override
          protected void processFloat(float arg, IPointable resultPointable) throws HyracksDataException {
              if (arg >= 0.0f) {
                  resultPointable.set(argPtr);
                  return;
              }
              aFloat.setValue(0.0f - arg);
              serialize(aFloat, floatSerde, resultPointable);
          }
  
          @Override
          protected void processDouble(double arg, IPointable resultPointable) throws HyracksDataException {
              if (arg >= 0.0d) {
                  resultPointable.set(argPtr);
                  return;
              }
              aDouble.setValue(0.0d - arg);
              serialize(aDouble, doubleSerde, resultPointable);
          }
      }
  
  }
  