| /* |
| * 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.asterix.runtime.evaluators.functions.temporal; |
| |
| import java.io.Serializable; |
| |
| import org.apache.asterix.om.pointables.nonvisitor.AIntervalPointable; |
| import org.apache.asterix.runtime.evaluators.comparisons.ComparisonHelper; |
| import org.apache.hyracks.api.exceptions.HyracksDataException; |
| import org.apache.hyracks.data.std.api.IPointable; |
| import org.apache.hyracks.data.std.primitive.VoidPointable; |
| |
| public class IntervalLogic implements Serializable { |
| |
| private static final long serialVersionUID = 1L; |
| private final ComparisonHelper ch = new ComparisonHelper(); |
| private final transient IPointable s1 = VoidPointable.FACTORY.createPointable(); |
| private final transient IPointable e1 = VoidPointable.FACTORY.createPointable(); |
| private final transient IPointable s2 = VoidPointable.FACTORY.createPointable(); |
| private final transient IPointable e2 = VoidPointable.FACTORY.createPointable(); |
| |
| public boolean validateInterval(AIntervalPointable ip1) throws HyracksDataException { |
| ip1.getStart(s1); |
| ip1.getEnd(e1); |
| return ch.compare(ip1.getTypeTag(), ip1.getTypeTag(), s1, e1) <= 0; |
| } |
| |
| /** |
| * Anything from interval 1 is less than anything from interval 2. |
| * |
| * @param ip1 |
| * @param ip2 |
| * @return boolean |
| * @throws HyracksDataException |
| * @see #after(AIntervalPointable, AIntervalPointable) |
| */ |
| public boolean before(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| ip1.getEnd(e1); |
| ip2.getStart(s2); |
| return ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), e1, s2) < 0; |
| } |
| |
| public boolean after(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| return before(ip2, ip1); |
| } |
| |
| /** |
| * The end of interval 1 is the same as the start of interval 2. |
| * |
| * @param ip1 |
| * @param ip2 |
| * @return boolean |
| * @throws HyracksDataException |
| * @see #metBy(AIntervalPointable, AIntervalPointable) |
| */ |
| public boolean meets(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| ip1.getEnd(e1); |
| ip2.getStart(s2); |
| return ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), e1, s2) == 0; |
| } |
| |
| public boolean metBy(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| return meets(ip2, ip1); |
| } |
| |
| /** |
| * Something at the end of interval 1 is contained as the beginning of interval 2. |
| * |
| * @param ip1 |
| * @param ip2 |
| * @return boolean |
| * @throws HyracksDataException |
| * @see #overlappedBy(AIntervalPointable, AIntervalPointable) |
| */ |
| public boolean overlaps(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| ip1.getStart(s1); |
| ip1.getEnd(e1); |
| ip2.getStart(s2); |
| ip2.getEnd(e2); |
| return ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), s1, s2) < 0 |
| && ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), e1, s2) > 0 |
| && ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), e1, e2) < 0; |
| } |
| |
| public boolean overlappedBy(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| return overlaps(ip2, ip1); |
| } |
| |
| /** |
| * Something is shared by both interval 1 and interval 2. |
| * |
| * @param ip1 |
| * @param ip2 |
| * @throws HyracksDataException |
| * @return boolean |
| */ |
| public boolean overlapping(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| ip1.getStart(s1); |
| ip1.getEnd(e1); |
| ip2.getStart(s2); |
| ip2.getEnd(e2); |
| return ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), s1, e2) < 0 |
| && ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), e1, s2) > 0; |
| } |
| |
| /** |
| * Anything from interval 1 is contained in the beginning of interval 2. |
| * |
| * @param ip1 |
| * @param ip2 |
| * @return boolean |
| * @throws HyracksDataException |
| * @see #startedBy(AIntervalPointable, AIntervalPointable) |
| */ |
| public boolean starts(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| ip1.getStart(s1); |
| ip1.getEnd(e1); |
| ip2.getStart(s2); |
| ip2.getEnd(e2); |
| return ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), s1, s2) == 0 |
| && ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), e1, e2) <= 0; |
| } |
| |
| public boolean startedBy(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| return starts(ip2, ip1); |
| } |
| |
| /** |
| * Anything from interval 2 is in interval 1. |
| * |
| * @param ip1 |
| * @param ip2 |
| * @return boolean |
| * @throws HyracksDataException |
| * @see #coveredBy(AIntervalPointable, AIntervalPointable) |
| */ |
| public boolean covers(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| ip1.getStart(s1); |
| ip1.getEnd(e1); |
| ip2.getStart(s2); |
| ip2.getEnd(e2); |
| return ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), s1, s2) <= 0 |
| && ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), e1, e2) >= 0; |
| } |
| |
| public boolean coveredBy(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| return covers(ip2, ip1); |
| } |
| |
| /** |
| * Anything from interval 1 is from the ending part of interval 2. |
| * |
| * @param ip1 |
| * @param ip2 |
| * @return boolean |
| * @throws HyracksDataException |
| * @see #endedBy(AIntervalPointable, AIntervalPointable) |
| */ |
| public boolean ends(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| ip1.getStart(s1); |
| ip1.getEnd(e1); |
| ip2.getStart(s2); |
| ip2.getEnd(e2); |
| return ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), s1, s2) >= 0 |
| && ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), e1, e2) == 0; |
| } |
| |
| public boolean endedBy(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| return ends(ip2, ip1); |
| } |
| |
| /** |
| * Intervals with the same start and end time. |
| * |
| * @param ip1 |
| * @param ip2 |
| * @return boolean |
| * @throws HyracksDataException |
| */ |
| public boolean same(AIntervalPointable ip1, AIntervalPointable ip2) throws HyracksDataException { |
| ip1.getStart(s1); |
| ip1.getEnd(e1); |
| ip2.getStart(s2); |
| ip2.getEnd(e2); |
| return ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), s1, s2) == 0 |
| && ch.compare(ip1.getTypeTag(), ip2.getTypeTag(), e1, e2) == 0; |
| } |
| |
| } |