org.azyva.dragom.model.plugin.impl

Class SimpleVersionClassifierPluginImpl

java.lang.Object

org.azyva.dragom.model.plugin.impl.NodePluginAbstractImpl

org.azyva.dragom.model.plugin.impl.ModulePluginAbstractImpl

org.azyva.dragom.model.plugin.impl.SimpleVersionClassifierPluginImpl

All Implemented Interfaces:

Comparator<org.azyva.dragom.model.Version>, org.azyva.dragom.model.plugin.ModulePlugin, org.azyva.dragom.model.plugin.NodePlugin, org.azyva.dragom.model.plugin.VersionClassifierPlugin

public class SimpleVersionClassifierPluginImpl
extends ModulePluginAbstractImpl
implements org.azyva.dragom.model.plugin.VersionClassifierPlugin

Simple VersionClassifierPlugin that happens to support a wide range of versioning strategies, including semantic. Here are some details:

• Evolution paths are not supported;
• If the Version's are equal as per Version.equals, they are considered equal;
• If the Version's are of different VersionType, dynamic Version's are considered greater than static Version's;
• If the Version's are dynamic, they are compared lexicographically;
• If the Version's are static they are expected to start with the prefix defined within the STATIC_VERSION_PREFIX model property;
• If one version starts with the prefix and not the other, the one that does is considered smaller;
• If no version start with the prefix, they are compared lexicographically;
• If they both start with the prefix (or if no prefix is defined), they are split into tokens on "." and "-";
• The tokens are considered in sequence;
• If 2 tokens to be compared are numeric, they are compared numerically;
• Otherwise they are compared lexicographically;
• As soon as 2 tokens to be compared are not deemed equal, the comparison stops with the result of the comparison;
• If 2 tokens are equal, if they are both separated from the next token with the same separator ("." or "-"), comparison continues with the following tokens;
• If they are not separated with the same separator, the one which has the "." separator is deemed greater than the other one;
• If one Version is out of tokens before the other, the one that has more tokens is deemed greater.

Note that this resembles the comparison algorithm used by Maven (see ComparableVersion) but does not break tokens on transition between characters and digits, and does not give special meaning to such tokens as "alpha", "beta", etc.

Author:

David Raymond

Constructor Summary

Constructors

Constructor and Description
SimpleVersionClassifierPluginImpl(org.azyva.dragom.model.Module module)

Method Summary

Modifier and Type	Method and Description
int	compare(org.azyva.dragom.model.Version version1, org.azyva.dragom.model.Version version2)
int	compareEvolutionPaths(String evolutionPath1, String evolutionPath2)
String	getEvolutionPath(org.azyva.dragom.model.Version version)
static void	main(String[] args)

Methods inherited from class org.azyva.dragom.model.plugin.impl.ModulePluginAbstractImpl

getModule, toString

Methods inherited from class org.azyva.dragom.model.plugin.impl.NodePluginAbstractImpl

getNode

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.azyva.dragom.model.plugin.ModulePlugin

getModule

Methods inherited from interface org.azyva.dragom.model.plugin.NodePlugin

getNode

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

SimpleVersionClassifierPluginImpl

public SimpleVersionClassifierPluginImpl(org.azyva.dragom.model.Module module)

Method Detail

compare

public int compare(org.azyva.dragom.model.Version version1,
                   org.azyva.dragom.model.Version version2)

Specified by:

compare in interface Comparator<org.azyva.dragom.model.Version>

Specified by:

compare in interface org.azyva.dragom.model.plugin.VersionClassifierPlugin

getEvolutionPath

public String getEvolutionPath(org.azyva.dragom.model.Version version)

Specified by:

getEvolutionPath in interface org.azyva.dragom.model.plugin.VersionClassifierPlugin

compareEvolutionPaths

public int compareEvolutionPaths(String evolutionPath1,
                                 String evolutionPath2)

Specified by:

compareEvolutionPaths in interface org.azyva.dragom.model.plugin.VersionClassifierPlugin

main

public static void main(String[] args)