| /* |
| * Copyright 2009-2011 by The Regents of the University of California |
| * 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 from |
| * |
| * 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 edu.uci.ics.asterix.runtime.evaluators.accessors; |
| |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import edu.uci.ics.asterix.dataflow.data.nontagged.serde.ADurationSerializerDeserializer; |
| import edu.uci.ics.asterix.dataflow.data.nontagged.serde.AInt32SerializerDeserializer; |
| import edu.uci.ics.asterix.dataflow.data.nontagged.serde.AInt64SerializerDeserializer; |
| import edu.uci.ics.asterix.formats.nontagged.AqlSerializerDeserializerProvider; |
| import edu.uci.ics.asterix.om.base.AInt32; |
| import edu.uci.ics.asterix.om.base.AMutableInt32; |
| import edu.uci.ics.asterix.om.base.ANull; |
| import edu.uci.ics.asterix.om.base.temporal.GregorianCalendarSystem; |
| import edu.uci.ics.asterix.om.functions.AsterixBuiltinFunctions; |
| import edu.uci.ics.asterix.om.functions.IFunctionDescriptor; |
| import edu.uci.ics.asterix.om.functions.IFunctionDescriptorFactory; |
| import edu.uci.ics.asterix.om.types.ATypeTag; |
| import edu.uci.ics.asterix.om.types.BuiltinType; |
| import edu.uci.ics.asterix.runtime.evaluators.base.AbstractScalarFunctionDynamicDescriptor; |
| import edu.uci.ics.hyracks.algebricks.common.exceptions.AlgebricksException; |
| import edu.uci.ics.hyracks.algebricks.core.algebra.functions.FunctionIdentifier; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluator; |
| import edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory; |
| import edu.uci.ics.hyracks.api.dataflow.value.ISerializerDeserializer; |
| import edu.uci.ics.hyracks.data.std.api.IDataOutputProvider; |
| import edu.uci.ics.hyracks.data.std.util.ArrayBackedValueStorage; |
| import edu.uci.ics.hyracks.dataflow.common.data.accessors.IFrameTupleReference; |
| |
| public class TemporalSecondAccessor extends AbstractScalarFunctionDynamicDescriptor { |
| |
| private static final long serialVersionUID = 1L; |
| |
| private static final FunctionIdentifier FID = AsterixBuiltinFunctions.ACCESSOR_TEMPORAL_SEC; |
| |
| // allowed input types |
| private static final byte SER_TIME_TYPE_TAG = ATypeTag.TIME.serialize(); |
| private static final byte SER_DATETIME_TYPE_TAG = ATypeTag.DATETIME.serialize(); |
| private static final byte SER_DURATION_TYPE_TAG = ATypeTag.DURATION.serialize(); |
| private static final byte SER_NULL_TYPE_TAG = ATypeTag.NULL.serialize(); |
| |
| public static final IFunctionDescriptorFactory FACTORY = new IFunctionDescriptorFactory() { |
| |
| @Override |
| public IFunctionDescriptor createFunctionDescriptor() { |
| return new TemporalSecondAccessor(); |
| } |
| |
| }; |
| |
| /* (non-Javadoc) |
| * @see edu.uci.ics.asterix.runtime.base.IScalarFunctionDynamicDescriptor#createEvaluatorFactory(edu.uci.ics.hyracks.algebricks.runtime.base.ICopyEvaluatorFactory[]) |
| */ |
| @Override |
| public ICopyEvaluatorFactory createEvaluatorFactory(final ICopyEvaluatorFactory[] args) throws AlgebricksException { |
| return new ICopyEvaluatorFactory() { |
| |
| private static final long serialVersionUID = 1L; |
| |
| @Override |
| public ICopyEvaluator createEvaluator(final IDataOutputProvider output) throws AlgebricksException { |
| return new ICopyEvaluator() { |
| |
| private DataOutput out = output.getDataOutput(); |
| |
| private ArrayBackedValueStorage argOut = new ArrayBackedValueStorage(); |
| |
| private ICopyEvaluator eval = args[0].createEvaluator(argOut); |
| |
| private GregorianCalendarSystem calSystem = GregorianCalendarSystem.getInstance(); |
| |
| // for output: type integer |
| @SuppressWarnings("unchecked") |
| private ISerializerDeserializer<AInt32> intSerde = AqlSerializerDeserializerProvider.INSTANCE |
| .getSerializerDeserializer(BuiltinType.AINT32); |
| private AMutableInt32 aMutableInt32 = new AMutableInt32(0); |
| @SuppressWarnings("unchecked") |
| private ISerializerDeserializer<ANull> nullSerde = AqlSerializerDeserializerProvider.INSTANCE |
| .getSerializerDeserializer(BuiltinType.ANULL); |
| |
| @Override |
| public void evaluate(IFrameTupleReference tuple) throws AlgebricksException { |
| argOut.reset(); |
| eval.evaluate(tuple); |
| byte[] bytes = argOut.getByteArray(); |
| |
| try { |
| |
| if (bytes[0] == SER_DURATION_TYPE_TAG) { |
| aMutableInt32.setValue(calSystem.getDurationSecond(ADurationSerializerDeserializer |
| .getDayTime(bytes, 1))); |
| intSerde.serialize(aMutableInt32, out); |
| return; |
| } |
| |
| long chrononTimeInMs = 0; |
| if (bytes[0] == SER_TIME_TYPE_TAG) { |
| chrononTimeInMs = AInt32SerializerDeserializer.getInt(bytes, 1); |
| } else if (bytes[0] == SER_DATETIME_TYPE_TAG) { |
| chrononTimeInMs = AInt64SerializerDeserializer.getLong(bytes, 1); |
| } else if (bytes[0] == SER_NULL_TYPE_TAG) { |
| nullSerde.serialize(ANull.NULL, out); |
| return; |
| } else { |
| throw new AlgebricksException("Inapplicable input type: " + bytes[0]); |
| } |
| |
| int sec = calSystem.getSecOfMin(chrononTimeInMs); |
| |
| aMutableInt32.setValue(sec); |
| intSerde.serialize(aMutableInt32, out); |
| |
| } catch (IOException e) { |
| throw new AlgebricksException(e); |
| } |
| } |
| }; |
| } |
| }; |
| } |
| |
| /* (non-Javadoc) |
| * @see edu.uci.ics.asterix.om.functions.IFunctionDescriptor#getIdentifier() |
| */ |
| @Override |
| public FunctionIdentifier getIdentifier() { |
| return FID; |
| } |
| |
| } |