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.constructors;
  
  import org.apache.asterix.om.base.AMutableInt64;
  import org.apache.asterix.om.base.AMutableTime;
  import org.apache.asterix.om.base.temporal.AsterixTemporalTypeParseException;
  import org.apache.asterix.om.base.temporal.DateTimeFormatUtils;
  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.algebricks.runtime.base.IScalarEvaluatorFactory;
  import org.apache.hyracks.api.context.IEvaluatorContext;
  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;
  import org.apache.hyracks.data.std.primitive.VoidPointable;
  import org.apache.hyracks.dataflow.common.data.accessors.IFrameTupleReference;
  
  public abstract class AbstractTimeWithFormatConstructorEvaluator extends AbstractTimeConstructorEvaluator {
  
      private final IScalarEvaluator formatEval;
      protected final IPointable formatArg = new VoidPointable();
      private final UTF8StringPointable formatTextPtr = new UTF8StringPointable();
      private final AMutableInt64 aInt64 = new AMutableInt64(0);
  
      protected AbstractTimeWithFormatConstructorEvaluator(IEvaluatorContext ctx, IScalarEvaluatorFactory[] args,
              SourceLocation sourceLoc) throws HyracksDataException {
          super(ctx, args[0].createScalarEvaluator(ctx), sourceLoc);
          formatEval = args[1].createScalarEvaluator(ctx);
      }
  
      @Override
      protected void evaluateInput(IFrameTupleReference tuple) throws HyracksDataException {
          super.evaluateInput(tuple);
          formatEval.evaluate(tuple, formatArg);
      }
  
      @Override
      protected boolean checkAndSetMissingOrNull(IPointable result) throws HyracksDataException {
          return PointableHelper.checkAndSetMissingOrNull(result, inputArg, formatArg);
      }
  
      @Override
      protected boolean parseTime(UTF8StringPointable textPtr, AMutableTime result) {
          byte[] formatBytes = formatArg.getByteArray();
          int formatStartOffset = formatArg.getStartOffset();
          int formatLength = formatArg.getLength();
          if (formatBytes[formatStartOffset] != ATypeTag.SERIALIZED_STRING_TYPE_TAG) {
              return false;
          }
          formatTextPtr.set(formatBytes, formatStartOffset + 1, formatLength - 1);
          try {
              if (DateTimeFormatUtils.getInstance().parseDateTime(aInt64, textPtr.getByteArray(),
                      textPtr.getCharStartOffset(), textPtr.getUTF8Length(), formatBytes,
                      formatTextPtr.getCharStartOffset(), formatTextPtr.getUTF8Length(),
                      DateTimeFormatUtils.DateTimeParseMode.TIME_ONLY, false)) {
                  result.setValue((int) aInt64.getLongValue());
                  return true;
              } else {
                  return false;
              }
          } catch (AsterixTemporalTypeParseException e) {
              // shouldn't happen
              return false;
          }
      }
  }
  