| /* |
| * 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.vxquery.runtime.functions.datetime; |
| |
| import java.io.DataOutput; |
| import java.io.IOException; |
| |
| import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluator; |
| import org.apache.hyracks.algebricks.runtime.base.IScalarEvaluatorFactory; |
| import org.apache.hyracks.api.context.IHyracksTaskContext; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| import org.apache.hyracks.data.std.api.IPointable; |
| import org.apache.hyracks.data.std.util.ArrayBackedValueStorage; |
| import org.apache.vxquery.datamodel.accessors.SequencePointable; |
| import org.apache.vxquery.datamodel.accessors.TaggedValuePointable; |
| import org.apache.vxquery.datamodel.accessors.atomic.XSDatePointable; |
| import org.apache.vxquery.datamodel.accessors.atomic.XSDateTimePointable; |
| import org.apache.vxquery.datamodel.accessors.atomic.XSTimePointable; |
| import org.apache.vxquery.datamodel.util.DateTime; |
| import org.apache.vxquery.datamodel.values.ValueTag; |
| import org.apache.vxquery.datamodel.values.XDMConstants; |
| import org.apache.vxquery.exceptions.ErrorCode; |
| import org.apache.vxquery.exceptions.SystemException; |
| import org.apache.vxquery.runtime.functions.base.AbstractTaggedValueArgumentScalarEvaluator; |
| import org.apache.vxquery.runtime.functions.base.AbstractTaggedValueArgumentScalarEvaluatorFactory; |
| |
| public class FnDateTimeScalarEvaluatorFactory extends AbstractTaggedValueArgumentScalarEvaluatorFactory { |
| private static final long serialVersionUID = 1L; |
| |
| public FnDateTimeScalarEvaluatorFactory(IScalarEvaluatorFactory[] args) { |
| super(args); |
| } |
| |
| @Override |
| protected IScalarEvaluator createEvaluator(IHyracksTaskContext ctx, IScalarEvaluator[] args) |
| throws HyracksDataException { |
| final XSDatePointable datep = (XSDatePointable) XSDatePointable.FACTORY.createPointable(); |
| final XSTimePointable timep = (XSTimePointable) XSTimePointable.FACTORY.createPointable(); |
| final SequencePointable seqp = (SequencePointable) SequencePointable.FACTORY.createPointable(); |
| final ArrayBackedValueStorage abvs = new ArrayBackedValueStorage(); |
| final DataOutput dOut = abvs.getDataOutput(); |
| |
| return new AbstractTaggedValueArgumentScalarEvaluator(args) { |
| @Override |
| protected void evaluate(TaggedValuePointable[] args, IPointable result) throws SystemException { |
| TaggedValuePointable tvp1 = args[0]; |
| if (tvp1.getTag() == ValueTag.SEQUENCE_TAG) { |
| tvp1.getValue(seqp); |
| if (seqp.getEntryCount() == 0) { |
| XDMConstants.setEmptySequence(result); |
| return; |
| } |
| } |
| if (tvp1.getTag() != ValueTag.XS_DATE_TAG) { |
| throw new SystemException(ErrorCode.FORG0006); |
| } |
| tvp1.getValue(datep); |
| |
| TaggedValuePointable tvp2 = args[1]; |
| if (tvp2.getTag() == ValueTag.SEQUENCE_TAG) { |
| tvp2.getValue(seqp); |
| if (seqp.getEntryCount() == 0) { |
| XDMConstants.setEmptySequence(result); |
| return; |
| } |
| } |
| if (tvp2.getTag() != ValueTag.XS_TIME_TAG) { |
| throw new SystemException(ErrorCode.FORG0006); |
| } |
| tvp2.getValue(timep); |
| |
| // Set the timezone. |
| byte timezoneHour, timezoneMinute; |
| if (datep.getTimezoneHour() == DateTime.TIMEZONE_HOUR_NULL |
| && datep.getTimezoneMinute() == DateTime.TIMEZONE_MINUTE_NULL |
| && timep.getTimezoneHour() == DateTime.TIMEZONE_HOUR_NULL |
| && timep.getTimezoneMinute() == DateTime.TIMEZONE_MINUTE_NULL) { |
| // both null. |
| timezoneHour = DateTime.TIMEZONE_HOUR_NULL; |
| timezoneMinute = DateTime.TIMEZONE_MINUTE_NULL; |
| } else if (datep.getTimezoneHour() == DateTime.TIMEZONE_HOUR_NULL |
| && datep.getTimezoneMinute() == DateTime.TIMEZONE_MINUTE_NULL |
| && timep.getTimezoneHour() != DateTime.TIMEZONE_HOUR_NULL |
| && timep.getTimezoneMinute() != DateTime.TIMEZONE_MINUTE_NULL) { |
| // date is null. |
| timezoneHour = (byte) timep.getTimezoneHour(); |
| timezoneMinute = (byte) timep.getTimezoneMinute(); |
| } else if (datep.getTimezoneHour() != DateTime.TIMEZONE_HOUR_NULL |
| && datep.getTimezoneMinute() != DateTime.TIMEZONE_MINUTE_NULL |
| && timep.getTimezoneHour() == DateTime.TIMEZONE_HOUR_NULL |
| && timep.getTimezoneMinute() == DateTime.TIMEZONE_MINUTE_NULL) { |
| // time is null. |
| timezoneHour = (byte) datep.getTimezoneHour(); |
| timezoneMinute = (byte) datep.getTimezoneMinute(); |
| } else if (datep.getTimezoneHour() == timep.getTimezoneHour() |
| && datep.getTimezoneMinute() == timep.getTimezoneMinute()) { |
| // timezones are the same. |
| timezoneHour = (byte) datep.getTimezoneHour(); |
| timezoneMinute = (byte) datep.getTimezoneMinute(); |
| } else { |
| // Neither match. |
| throw new SystemException(ErrorCode.FORG0008); |
| } |
| |
| try { |
| abvs.reset(); |
| dOut.write(ValueTag.XS_DATETIME_TAG); |
| dOut.write(datep.getByteArray(), datep.getStartOffset(), |
| XSDatePointable.TYPE_TRAITS.getFixedLength() - 2); |
| dOut.write(timep.getByteArray(), timep.getStartOffset(), |
| XSTimePointable.TYPE_TRAITS.getFixedLength() - 2); |
| dOut.write(timezoneHour); |
| dOut.write(timezoneMinute); |
| |
| result.set(abvs.getByteArray(), abvs.getStartOffset(), |
| XSDateTimePointable.TYPE_TRAITS.getFixedLength() + 1); |
| } catch (IOException e) { |
| throw new SystemException(ErrorCode.SYSE0001, e); |
| } |
| } |
| }; |
| } |
| } |