| /* |
| * 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.beam.sdk.io.cassandra; |
| |
| import java.io.Serializable; |
| import java.math.BigInteger; |
| import javax.annotation.Nullable; |
| import org.apache.beam.sdk.annotations.Experimental; |
| import org.apache.beam.sdk.annotations.Experimental.Kind; |
| |
| /** Models a Cassandra token range. */ |
| @Experimental(Kind.SOURCE_SINK) |
| @SuppressWarnings({ |
| "nullness" // TODO(https://issues.apache.org/jira/browse/BEAM-10402) |
| }) |
| public final class RingRange implements Serializable { |
| private final BigInteger start; |
| private final BigInteger end; |
| |
| private RingRange(BigInteger start, BigInteger end) { |
| this.start = start; |
| this.end = end; |
| } |
| |
| public BigInteger getStart() { |
| return start; |
| } |
| |
| public BigInteger getEnd() { |
| return end; |
| } |
| |
| /** |
| * Returns the size of this range. |
| * |
| * @return size of the range, max - range, in case of wrap |
| */ |
| BigInteger span(BigInteger ringSize) { |
| return (start.compareTo(end) >= 0) ? end.subtract(start).add(ringSize) : end.subtract(start); |
| } |
| |
| /** @return true if 0 is inside of this range. Note that if start == end, then wrapping is true */ |
| public boolean isWrapping() { |
| return start.compareTo(end) >= 0; |
| } |
| |
| @Override |
| public String toString() { |
| return String.format("(%s,%s]", start.toString(), end.toString()); |
| } |
| |
| public static RingRange of(BigInteger start, BigInteger end) { |
| return new RingRange(start, end); |
| } |
| |
| @Override |
| public boolean equals(@Nullable Object o) { |
| if (this == o) { |
| return true; |
| } |
| if (o == null || getClass() != o.getClass()) { |
| return false; |
| } |
| |
| RingRange ringRange = (RingRange) o; |
| |
| if (getStart() != null |
| ? !getStart().equals(ringRange.getStart()) |
| : ringRange.getStart() != null) { |
| return false; |
| } |
| return getEnd() != null ? getEnd().equals(ringRange.getEnd()) : ringRange.getEnd() == null; |
| } |
| |
| @Override |
| public int hashCode() { |
| int result = getStart() != null ? getStart().hashCode() : 0; |
| result = 31 * result + (getEnd() != null ? getEnd().hashCode() : 0); |
| return result; |
| } |
| } |