| /* |
| * 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.functions.temporal; |
| |
| import java.io.DataOutput; |
| |
| import edu.uci.ics.asterix.dataflow.data.nontagged.serde.ADateSerializerDeserializer; |
| import edu.uci.ics.asterix.dataflow.data.nontagged.serde.ADurationSerializerDeserializer; |
| import edu.uci.ics.asterix.formats.nontagged.AqlSerializerDeserializerProvider; |
| import edu.uci.ics.asterix.om.base.ADuration; |
| import edu.uci.ics.asterix.om.base.AMutableDuration; |
| import edu.uci.ics.asterix.om.base.ANull; |
| import edu.uci.ics.asterix.om.base.temporal.DurationArithmeticOperations; |
| 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.om.types.EnumDeserializer; |
| 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.api.exceptions.HyracksDataException; |
| 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 CalendarDuartionFromDateDescriptor extends AbstractScalarFunctionDynamicDescriptor { |
| |
| private final static long serialVersionUID = 1L; |
| public final static FunctionIdentifier FID = AsterixBuiltinFunctions.CALENDAR_DURATION_FROM_DATE; |
| |
| // allowed input types |
| private final static byte SER_NULL_TYPE_TAG = ATypeTag.NULL.serialize(); |
| private final static byte SER_DATE_TYPE_TAG = ATypeTag.DATE.serialize(); |
| private final static byte SER_DURATION_TYPE_TAG = ATypeTag.DURATION.serialize(); |
| |
| public final static IFunctionDescriptorFactory FACTORY = new IFunctionDescriptorFactory() { |
| |
| @Override |
| public IFunctionDescriptor createFunctionDescriptor() { |
| return new CalendarDuartionFromDateDescriptor(); |
| } |
| }; |
| |
| /* (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 argOut0 = new ArrayBackedValueStorage(); |
| private ArrayBackedValueStorage argOut1 = new ArrayBackedValueStorage(); |
| private ICopyEvaluator eval0 = args[0].createEvaluator(argOut0); |
| private ICopyEvaluator eval1 = args[1].createEvaluator(argOut1); |
| |
| // possible output types |
| @SuppressWarnings("unchecked") |
| private ISerializerDeserializer<ANull> nullSerde = AqlSerializerDeserializerProvider.INSTANCE |
| .getSerializerDeserializer(BuiltinType.ANULL); |
| @SuppressWarnings("unchecked") |
| private ISerializerDeserializer<ADuration> durationSerde = AqlSerializerDeserializerProvider.INSTANCE |
| .getSerializerDeserializer(BuiltinType.ADURATION); |
| |
| private AMutableDuration aDuration = new AMutableDuration(0, 0); |
| |
| private GregorianCalendarSystem calInstanct = GregorianCalendarSystem.getInstance(); |
| |
| @Override |
| public void evaluate(IFrameTupleReference tuple) throws AlgebricksException { |
| |
| argOut0.reset(); |
| eval0.evaluate(tuple); |
| argOut1.reset(); |
| eval1.evaluate(tuple); |
| |
| try { |
| if (argOut0.getByteArray()[0] == SER_NULL_TYPE_TAG |
| || argOut1.getByteArray()[0] == SER_NULL_TYPE_TAG) { |
| nullSerde.serialize(ANull.NULL, out); |
| return; |
| } |
| |
| if (argOut0.getByteArray()[0] != SER_DATE_TYPE_TAG) { |
| throw new AlgebricksException(FID.getName() |
| + ": expects type DATE/NULL for parameter 0 but got " |
| + EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(argOut0.getByteArray()[0])); |
| } |
| |
| if (argOut1.getByteArray()[0] != SER_DURATION_TYPE_TAG) { |
| throw new AlgebricksException(FID.getName() |
| + ": expects type DURATION/NULL for parameter 1 but got " |
| + EnumDeserializer.ATYPETAGDESERIALIZER.deserialize(argOut1.getByteArray()[0])); |
| } |
| |
| int yearMonthDurationInMonths = ADurationSerializerDeserializer.getYearMonth( |
| argOut1.getByteArray(), 1); |
| long dayTimeDurationInMs = ADurationSerializerDeserializer.getDayTime( |
| argOut1.getByteArray(), 1); |
| |
| long startingTimePoint = ADateSerializerDeserializer.getChronon(argOut0.getByteArray(), 1) |
| * GregorianCalendarSystem.CHRONON_OF_DAY; |
| |
| long endingTimePoint = DurationArithmeticOperations.addDuration(startingTimePoint, |
| yearMonthDurationInMonths, dayTimeDurationInMs); |
| |
| if (startingTimePoint == endingTimePoint) { |
| aDuration.setValue(0, 0); |
| } else { |
| |
| boolean negative = false; |
| |
| if (endingTimePoint < startingTimePoint) { |
| negative = true; |
| // swap the starting and ending time, so that ending time is always larger than the starting time. |
| long tmpTime = endingTimePoint; |
| endingTimePoint = startingTimePoint; |
| startingTimePoint = tmpTime; |
| } |
| |
| int year0 = calInstanct.getYear(startingTimePoint); |
| int month0 = calInstanct.getMonthOfYear(startingTimePoint, year0); |
| |
| int year1 = calInstanct.getYear(endingTimePoint); |
| int month1 = calInstanct.getMonthOfYear(endingTimePoint, year1); |
| |
| int year = year1 - year0; |
| int month = month1 - month0; |
| int day = calInstanct.getDayOfMonthYear(endingTimePoint, year1, month1) |
| - calInstanct.getDayOfMonthYear(startingTimePoint, year0, month0); |
| int hour = calInstanct.getHourOfDay(endingTimePoint) |
| - calInstanct.getHourOfDay(startingTimePoint); |
| int min = calInstanct.getMinOfHour(endingTimePoint) |
| - calInstanct.getMinOfHour(startingTimePoint); |
| int sec = calInstanct.getSecOfMin(endingTimePoint) |
| - calInstanct.getSecOfMin(startingTimePoint); |
| int ms = calInstanct.getMillisOfSec(endingTimePoint) |
| - calInstanct.getMillisOfSec(startingTimePoint); |
| |
| if (ms < 0) { |
| ms += GregorianCalendarSystem.CHRONON_OF_SECOND; |
| sec -= 1; |
| } |
| |
| if (sec < 0) { |
| sec += GregorianCalendarSystem.CHRONON_OF_MINUTE |
| / GregorianCalendarSystem.CHRONON_OF_SECOND; |
| min -= 1; |
| } |
| |
| if (min < 0) { |
| min += GregorianCalendarSystem.CHRONON_OF_HOUR |
| / GregorianCalendarSystem.CHRONON_OF_MINUTE; |
| hour -= 1; |
| } |
| |
| if (hour < 0) { |
| hour += GregorianCalendarSystem.CHRONON_OF_DAY |
| / GregorianCalendarSystem.CHRONON_OF_HOUR; |
| day -= 1; |
| } |
| |
| if (day < 0) { |
| boolean isLeapYear = calInstanct.isLeapYear(year1); |
| day += (isLeapYear) ? (GregorianCalendarSystem.DAYS_OF_MONTH_LEAP[month1 - 2]) |
| : (GregorianCalendarSystem.DAYS_OF_MONTH_ORDI[month1 - 2]); |
| month -= 1; |
| } |
| |
| if (month < 0) { |
| month += GregorianCalendarSystem.MONTHS_IN_A_YEAR; |
| year -= 1; |
| } |
| |
| if (negative) { |
| aDuration.setValue(-1 * (year * GregorianCalendarSystem.MONTHS_IN_A_YEAR + month), |
| -1 |
| * (day * GregorianCalendarSystem.CHRONON_OF_DAY + hour |
| * GregorianCalendarSystem.CHRONON_OF_HOUR + min |
| * GregorianCalendarSystem.CHRONON_OF_MINUTE + sec |
| * GregorianCalendarSystem.CHRONON_OF_SECOND + ms)); |
| } else { |
| aDuration.setValue(year * GregorianCalendarSystem.MONTHS_IN_A_YEAR + month, day |
| * GregorianCalendarSystem.CHRONON_OF_DAY + hour |
| * GregorianCalendarSystem.CHRONON_OF_HOUR + min |
| * GregorianCalendarSystem.CHRONON_OF_MINUTE + sec |
| * GregorianCalendarSystem.CHRONON_OF_SECOND + ms); |
| } |
| } |
| |
| durationSerde.serialize(aDuration, out); |
| |
| } catch (HyracksDataException hex) { |
| throw new AlgebricksException(hex); |
| } |
| } |
| }; |
| } |
| }; |
| } |
| |
| /* (non-Javadoc) |
| * @see edu.uci.ics.asterix.om.functions.IFunctionDescriptor#getIdentifier() |
| */ |
| @Override |
| public FunctionIdentifier getIdentifier() { |
| return FID; |
| } |
| |
| } |
