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Implement Comparable in Version (#22378) 

Supports using streams to calculate min/max of a collection of Versions, etc.
This commit is contained in:
Tim Vernum 2017-01-03 12:20:17 +11:00 committed by GitHub
parent 38427c1df0
commit 6ad5486e6b
2 changed files with 14 additions and 1 deletions
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8
core/src/main/java/org/elasticsearch/Version.java
View File

@ -28,8 +28,9 @@ import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.monitor.jvm.JvmInfo;
import java.io.IOException;
import java.util.Comparator;
public class Version {
public class Version implements Comparable<Version> {
/*
* The logic for ID is: XXYYZZAA, where XX is major version, YY is minor version, ZZ is revision, and AA is alpha/beta/rc indicator AA
* values below 25 are for alpha builder (since 5.0), and above 25 and below 50 are beta builds, and below 99 are RC builds, with 99
@ -310,6 +311,11 @@ public class Version {
return version.id >= id;
}
@Override
public int compareTo(Version other) {
return Integer.compare(this.id, other.id);
}
/**
* Returns the minimum compatible version based on the current
* version. Ie a node needs to have at least the return version in order

7
core/src/test/java/org/elasticsearch/VersionTests.java
View File

@ -38,7 +38,10 @@ import static org.elasticsearch.Version.V_5_0_0_alpha1;
import static org.elasticsearch.test.VersionUtils.randomVersion;
import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.Matchers.containsString;
import static org.hamcrest.Matchers.greaterThan;
import static org.hamcrest.Matchers.is;
import static org.hamcrest.Matchers.lessThan;
import static org.hamcrest.Matchers.lessThanOrEqualTo;
import static org.hamcrest.Matchers.sameInstance;
public class VersionTests extends ESTestCase {
@ -64,6 +67,10 @@ public class VersionTests extends ESTestCase {
assertTrue(Version.fromString("5.0.0").onOrAfter(Version.fromString("5.0.0-beta2")));
assertTrue(Version.fromString("5.0.0-rc1").onOrAfter(Version.fromString("5.0.0-beta24")));
assertTrue(Version.fromString("5.0.0-alpha24").before(Version.fromString("5.0.0-beta0")));
assertThat(V_2_2_0, is(lessThan(V_5_0_0_alpha1)));
assertThat(V_2_2_0.compareTo(V_2_2_0), is(0));
assertThat(V_5_0_0_alpha1, is(greaterThan(V_2_2_0)));
}
public void testMin() {