org.apache.tajo.datum.TimeDatum.java Source code

Introduction

Here is the source code for org.apache.tajo.datum.TimeDatum.java

Source

/**
 * 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.tajo.datum;

import com.google.common.primitives.Longs;
import org.apache.tajo.common.TajoDataTypes;
import org.apache.tajo.exception.InvalidOperationException;
import org.apache.tajo.exception.InvalidValueForCastException;
import org.apache.tajo.exception.TajoRuntimeException;
import org.apache.tajo.util.Bytes;
import org.apache.tajo.util.datetime.DateTimeConstants.DateStyle;
import org.apache.tajo.util.datetime.DateTimeUtil;
import org.apache.tajo.util.datetime.TimeMeta;

import static org.apache.tajo.type.Type.Time;

public class TimeDatum extends Datum {
    public static final int SIZE = 8;
    private final long time;

    public TimeDatum(long time) {
        super(Time);
        this.time = time;
    }

    @Override
    public TimeMeta asTimeMeta() {
        TimeMeta tm = new TimeMeta();
        DateTimeUtil.date2j(time, tm);

        return tm;
    }

    public int getHourOfDay() {
        TimeMeta tm = asTimeMeta();
        return tm.hours;
    }

    public int getMinuteOfHour() {
        TimeMeta tm = asTimeMeta();
        return tm.minutes;
    }

    public int getSecondOfMinute() {
        TimeMeta tm = new TimeMeta();
        DateTimeUtil.date2j(time, tm);
        return tm.secs;
    }

    public int getMillisOfSecond() {
        TimeMeta tm = asTimeMeta();
        return tm.fsecs / 1000;
    }

    public String toString() {
        return asChars();
    }

    @Override
    public int asInt4() {
        throw new TajoRuntimeException(
                new InvalidValueForCastException(TajoDataTypes.Type.TIME, TajoDataTypes.Type.INT4));
    }

    @Override
    public long asInt8() {
        return time;
    }

    @Override
    public float asFloat4() {
        throw new TajoRuntimeException(
                new InvalidValueForCastException(TajoDataTypes.Type.TIME, TajoDataTypes.Type.FLOAT4));
    }

    @Override
    public double asFloat8() {
        throw new TajoRuntimeException(
                new InvalidValueForCastException(TajoDataTypes.Type.TIME, TajoDataTypes.Type.FLOAT8));
    }

    @Override
    public String asChars() {
        TimeMeta tm = asTimeMeta();
        return DateTimeUtil.encodeTime(tm, DateStyle.ISO_DATES);
    }

    @Override
    public int size() {
        return SIZE;
    }

    @Override
    public byte[] asByteArray() {
        return Bytes.toBytes(asInt8());
    }

    @Override
    public Datum plus(Datum datum) {
        switch (datum.kind()) {
        case INTERVAL: {
            IntervalDatum interval = ((IntervalDatum) datum);
            TimeMeta tm = asTimeMeta();
            tm.plusInterval(interval.months, interval.milliseconds);
            return new TimeDatum(DateTimeUtil.toTime(tm));
        }
        case DATE: {
            DateDatum dateDatum = (DateDatum) datum;
            TimeMeta dateTm = dateDatum.asTimeMeta();
            dateTm.plusTime(time);
            return new TimestampDatum(DateTimeUtil.toJulianTimestamp(dateTm));
        }
        case TIMESTAMP: {
            TimestampDatum timestampDatum = (TimestampDatum) datum;
            TimeMeta tm = timestampDatum.asTimeMeta();
            tm.plusTime(time);
            return new TimestampDatum(DateTimeUtil.toJulianTimestamp(tm));
        }
        default:
            throw new InvalidOperationException("operator does not exist: " + type() + " + " + datum.type());
        }
    }

    @Override
    public Datum minus(Datum datum) {
        switch (datum.kind()) {
        case INTERVAL:
            IntervalDatum interval = ((IntervalDatum) datum);
            TimeMeta tm = asTimeMeta();
            tm.plusInterval(-interval.months, -interval.milliseconds);
            return new TimeDatum(DateTimeUtil.toTime(tm));
        case TIME:
            return new IntervalDatum((time - ((TimeDatum) datum).time) / 1000);
        default:
            throw new InvalidOperationException("operator does not exist: " + type() + " - " + datum.type());
        }
    }

    @Override
    public Datum equalsTo(Datum datum) {
        if (datum.kind() == TajoDataTypes.Type.TIME) {
            return DatumFactory.createBool(time == (((TimeDatum) datum).time));
        } else if (datum.isNull()) {
            return datum;
        } else {
            throw new InvalidOperationException(datum.type());
        }
    }

    @Override
    public int compareTo(Datum datum) {
        if (datum.kind() == TajoDataTypes.Type.TIME) {
            TimeDatum another = (TimeDatum) datum;
            return Longs.compare(time, another.time);
        } else if (datum.isNull()) {
            return -1;
        } else {
            throw new InvalidOperationException(datum.type());
        }
    }

    @Override
    public boolean equals(Object obj) {
        if (obj instanceof TimeDatum) {
            TimeDatum another = (TimeDatum) obj;
            return time == another.time;
        } else {
            return false;
        }
    }

    @Override
    public int hashCode() {
        return Longs.hashCode(time);
    }

}