org.apache.vxquery.runtime.functions.cast.CastToDurationOperation Maven / Gradle / Ivy
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* 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.cast;
import java.io.DataOutput;
import java.io.IOException;
import org.apache.vxquery.datamodel.accessors.atomic.XSDurationPointable;
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.strings.ICharacterIterator;
import org.apache.vxquery.runtime.functions.strings.UTF8StringCharacterIterator;
import edu.uci.ics.hyracks.data.std.primitive.IntegerPointable;
import edu.uci.ics.hyracks.data.std.primitive.LongPointable;
import edu.uci.ics.hyracks.data.std.primitive.UTF8StringPointable;
public class CastToDurationOperation extends AbstractCastToOperation {
@Override
public void convertDTDuration(LongPointable longp, DataOutput dOut) throws SystemException, IOException {
dOut.write(ValueTag.XS_DURATION_TAG);
dOut.writeInt(0);
dOut.writeLong(longp.getLong());
}
@Override
public void convertDuration(XSDurationPointable durationp, DataOutput dOut) throws SystemException, IOException {
dOut.write(ValueTag.XS_DURATION_TAG);
dOut.write(durationp.getByteArray(), durationp.getStartOffset(), durationp.getLength());
}
@Override
public void convertString(UTF8StringPointable stringp, DataOutput dOut) throws SystemException, IOException {
ICharacterIterator charIterator = new UTF8StringCharacterIterator(stringp);
charIterator.reset();
boolean pastDecimal = false, timeSection = false;
byte decimalPlace = 3;
int value = 0;
long year = 0, month = 0, day = 0, hour = 0, minute = 0, millisecond = 0;
long negativeResult = 1;
// First character
int c = charIterator.next();
if (c == Character.valueOf('-')) {
negativeResult = -1;
c = charIterator.next();
}
if (c != Character.valueOf('P')) {
// Invalid duration format.
throw new SystemException(ErrorCode.FORG0001);
}
while ((c = charIterator.next()) != ICharacterIterator.EOS_CHAR) {
if (Character.isDigit(c)) {
value = value * 10 + Character.getNumericValue(c);
if (pastDecimal) {
--decimalPlace;
}
} else if (c == Character.valueOf('T')) {
timeSection = true;
} else if (c == Character.valueOf('.')) {
pastDecimal = true;
} else if (c == Character.valueOf('Y') && !timeSection) {
year = value;
value = 0;
pastDecimal = false;
} else if (c == Character.valueOf('M') && !timeSection) {
month = value;
value = 0;
pastDecimal = false;
} else if (c == Character.valueOf('D') && !timeSection) {
day = value;
value = 0;
pastDecimal = false;
} else if (c == Character.valueOf('H') && timeSection) {
hour = value;
value = 0;
pastDecimal = false;
} else if (c == Character.valueOf('M') && timeSection) {
minute = value;
value = 0;
pastDecimal = false;
} else if (c == Character.valueOf('S') && timeSection) {
millisecond = (long) (value * Math.pow(10, decimalPlace));
value = 0;
pastDecimal = false;
} else {
// Invalid duration format.
throw new SystemException(ErrorCode.FORG0001);
}
}
long yearMonth = negativeResult * (year * 12 + month);
long dayTime = negativeResult
* (day * DateTime.CHRONON_OF_DAY + hour * DateTime.CHRONON_OF_HOUR + minute
* DateTime.CHRONON_OF_MINUTE + millisecond);
dOut.write(ValueTag.XS_DURATION_TAG);
dOut.writeInt((int) yearMonth);
dOut.writeLong(dayTime);
}
@Override
public void convertYMDuration(IntegerPointable intp, DataOutput dOut) throws SystemException, IOException {
dOut.write(ValueTag.XS_DURATION_TAG);
dOut.writeInt(intp.getInteger());
dOut.writeLong(0);
}
@Override
public void convertUntypedAtomic(UTF8StringPointable stringp, DataOutput dOut) throws SystemException, IOException {
convertString(stringp, dOut);
}
}