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.records;
  
  import org.apache.asterix.om.types.ARecordType;
  import org.apache.asterix.om.types.ATypeTag;
  import org.apache.asterix.runtime.evaluators.functions.PointableHelper;
  import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator;
  import org.apache.hyracks.api.exceptions.HyracksDataException;
  import org.apache.hyracks.data.std.api.IPointable;
  import org.apache.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
  
  abstract class AbstractRecordAddPutEvaluator extends AbstractRecordFunctionEvaluator {
      private final IScalarEvaluator eval0;
      private final IScalarEvaluator eval1;
      private final IScalarEvaluator eval2;
      protected boolean newFieldValueIsMissing = false;
  
      AbstractRecordAddPutEvaluator(IScalarEvaluator eval0, IScalarEvaluator eval1, IScalarEvaluator eval2,
              ARecordType outRecType, ARecordType inRecType) {
          super(outRecType, inRecType);
          this.eval0 = eval0;
          this.eval1 = eval1;
          this.eval2 = eval2;
      }
  
      @Override
      public void evaluate(IFrameTupleReference tuple, IPointable result) throws HyracksDataException {
          resultStorage.reset();
          eval0.evaluate(tuple, inputPointable);
          eval1.evaluate(tuple, newFieldNamePointable);
          eval2.evaluate(tuple, newFieldValuePointable);
          ATypeTag inputTypeTag = PointableHelper.getTypeTag(inputPointable);
          ATypeTag newFieldNameTypeTag = PointableHelper.getTypeTag(newFieldNamePointable);
          if (inputTypeTag == ATypeTag.MISSING || newFieldNameTypeTag == ATypeTag.MISSING) {
              PointableHelper.setMissing(result);
              return;
          }
          if (inputTypeTag != ATypeTag.OBJECT || newFieldNameTypeTag != ATypeTag.STRING) {
              PointableHelper.setNull(result);
              return;
          }
          newFieldValueIsMissing = PointableHelper.getTypeTag(newFieldValuePointable) == ATypeTag.MISSING;
          outputRecordTypeInfo.reset(outRecType);
          if (inputRecordPointable == null) {
              inputRecordPointable = pointableAllocator.allocateRecordValue(inRecType);
          }
          buildOutputRecord(result);
          result.set(resultStorage);
      }
  
      protected abstract void buildOutputRecord(IPointable result) throws HyracksDataException;
  
      protected void addField(IPointable fieldName, IPointable fieldValue) throws HyracksDataException {
          int pos = outputRecordTypeInfo.getFieldIndex(fieldName.getByteArray(), fieldName.getStartOffset() + 1,
                  fieldName.getLength() - 1);
          if (pos >= 0) {
              outRecordBuilder.addField(pos, fieldValue);
          } else {
              outRecordBuilder.addField(fieldName, fieldValue);
          }
      }
  }
  