| /* |
| * 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.primitive.LongPointable; |
| import org.apache.hyracks.data.std.util.ArrayBackedValueStorage; |
| import org.apache.vxquery.context.DynamicContext; |
| 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.util.DateTime; |
| import org.apache.vxquery.datamodel.values.ValueTag; |
| 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 FnAdjustDateToTimezoneScalarEvaluatorFactory extends AbstractTaggedValueArgumentScalarEvaluatorFactory { |
| private static final long serialVersionUID = 1L; |
| |
| public FnAdjustDateToTimezoneScalarEvaluatorFactory(IScalarEvaluatorFactory[] args) { |
| super(args); |
| } |
| |
| @Override |
| protected IScalarEvaluator createEvaluator(IHyracksTaskContext ctx, IScalarEvaluator[] args) |
| throws HyracksDataException { |
| final DynamicContext dCtx = (DynamicContext) ctx.getJobletContext().getGlobalJobData(); |
| final XSDatePointable datep = (XSDatePointable) XSDatePointable.FACTORY.createPointable(); |
| final XSDateTimePointable ctxDatetimep = (XSDateTimePointable) XSDateTimePointable.FACTORY.createPointable(); |
| final LongPointable longp = (LongPointable) LongPointable.FACTORY.createPointable(); |
| final ArrayBackedValueStorage abvsInner = new ArrayBackedValueStorage(); |
| final DataOutput dOutInner = abvsInner.getDataOutput(); |
| final ArrayBackedValueStorage abvs = new ArrayBackedValueStorage(); |
| final DataOutput dOut = abvs.getDataOutput(); |
| |
| return new AbstractTaggedValueArgumentScalarEvaluator(args) { |
| @Override |
| protected void evaluate(TaggedValuePointable[] args, IPointable result) throws SystemException { |
| dCtx.getCurrentDateTime(ctxDatetimep); |
| TaggedValuePointable tvp1 = args[0]; |
| if (tvp1.getTag() != ValueTag.XS_DATE_TAG) { |
| throw new SystemException(ErrorCode.FORG0006); |
| } |
| tvp1.getValue(datep); |
| |
| // Second argument is optional and will used the dynamic context if not supplied. |
| long tz; |
| if (args.length == 2) { |
| TaggedValuePointable tvp2 = args[1]; |
| if (tvp2.getTag() == ValueTag.XS_DAY_TIME_DURATION_TAG) { |
| tvp2.getValue(longp); |
| if (Math.abs(longp.getLong()) > DateTime.CHRONON_OF_HOUR * 14) { |
| throw new SystemException(ErrorCode.FODT0003); |
| } |
| tz = longp.getLong() / DateTime.CHRONON_OF_MINUTE; |
| } else { |
| throw new SystemException(ErrorCode.FORG0006); |
| } |
| } else { |
| tz = ctxDatetimep.getTimezoneHour() * 60 + ctxDatetimep.getTimezoneMinute(); |
| } |
| |
| try { |
| abvs.reset(); |
| abvsInner.reset(); |
| DateTime.adjustDateTimeToTimezone(datep, tz, dOutInner); |
| |
| byte[] bytes = abvsInner.getByteArray(); |
| int startOffset = abvsInner.getStartOffset() + 1; |
| // Convert to date. |
| bytes[startOffset + XSDatePointable.TIMEZONE_HOUR_OFFSET] = bytes[startOffset |
| + XSDateTimePointable.TIMEZONE_HOUR_OFFSET]; |
| bytes[startOffset + XSDatePointable.TIMEZONE_MINUTE_OFFSET] = bytes[startOffset |
| + XSDateTimePointable.TIMEZONE_MINUTE_OFFSET]; |
| dOut.write(ValueTag.XS_DATE_TAG); |
| dOut.write(bytes, startOffset, XSDatePointable.TYPE_TRAITS.getFixedLength()); |
| |
| result.set(abvs); |
| } catch (IOException e) { |
| throw new SystemException(ErrorCode.SYSE0001, e); |
| } |
| } |
| }; |
| } |
| } |