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org.apache.archiva.common.utils</FONT>
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Class VersionComparator</H2>
<PRE>
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</A>
<IMG SRC="../../../../../resources/inherit.gif" ALT="extended by "><B>org.apache.archiva.common.utils.VersionComparator</B>
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<DT><B>All Implemented Interfaces:</B> <DD><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</A>&lt;<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt;</DD>
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<DT><PRE>public class <A HREF="../../../../../src-html/org/apache/archiva/common/utils/VersionComparator.html#line.52"><B>VersionComparator</B></A><DT>extends <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</A><DT>implements <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</A>&lt;<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt;</DL>
</PRE>
<P>
VersionComparator - compare the parts of two version strings.
<p/>
Technique.
<p/>
* Split the version strings into parts by splitting on <code>"-._"</code> first, then breaking apart words from numbers.
<p/>
<code>
"1.0" = "1", "0"
"1.0-alpha-1" = "1", "0", "alpha", "1"
"2.0-rc2" = "2", "0", "rc", "2"
"1.3-m2" = "1", "3", "m", "3"
</code>
<p/>
compare each part individually, and when they do not match, perform the following test.
<p/>
Numbers are calculated per normal comparison rules.
Words that are part of the "special word list" will be treated as their index within that heirarchy.
Words that cannot be identified as special, are treated using normal case-insensitive comparison rules.
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<CODE>private static&nbsp;<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</A>&lt;<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt;</CODE></FONT></TD>
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<TD><CODE><B><A HREF="../../../../../org/apache/archiva/common/utils/VersionComparator.html#specialWords">specialWords</A></B></CODE>
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<TD><CODE><B><A HREF="../../../../../org/apache/archiva/common/utils/VersionComparator.html#VersionComparator()">VersionComparator</A></B>()</CODE>
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<CODE>&nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/archiva/common/utils/VersionComparator.html#compare(java.lang.String, java.lang.String)">compare</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;o1,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;o2)</CODE>
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<CODE>private &nbsp;int</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/archiva/common/utils/VersionComparator.html#comparePart(java.lang.String, java.lang.String)">comparePart</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;s1,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;s2)</CODE>
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<CODE>static&nbsp;<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</A>&lt;<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt;</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/archiva/common/utils/VersionComparator.html#getInstance()">getInstance</A></B>()</CODE>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
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<CODE>private &nbsp;<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A></CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/archiva/common/utils/VersionComparator.html#safePart(java.lang.String[], int)">safePart</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[]&nbsp;parts,
int&nbsp;idx)</CODE>
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&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</TD>
</TR>
<TR BGCOLOR="white" CLASS="TableRowColor">
<TD ALIGN="right" VALIGN="top" WIDTH="1%"><FONT SIZE="-1">
<CODE>static&nbsp;<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[]</CODE></FONT></TD>
<TD><CODE><B><A HREF="../../../../../org/apache/archiva/common/utils/VersionComparator.html#toParts(java.lang.String)">toParts</A></B>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;version)</CODE>
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<TD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Comparator.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.util">equals</A></CODE></TD>
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<A NAME="INSTANCE"><!-- --></A><H3>
INSTANCE</H3>
<PRE>
private static <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</A>&lt;<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt; <A HREF="../../../../../src-html/org/apache/archiva/common/utils/VersionComparator.html#line.55"><B>INSTANCE</B></A></PRE>
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<A NAME="specialWords"><!-- --></A><H3>
specialWords</H3>
<PRE>
private <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</A>&lt;<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt; <A HREF="../../../../../src-html/org/apache/archiva/common/utils/VersionComparator.html#line.57"><B>specialWords</B></A></PRE>
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<A NAME="VersionComparator()"><!-- --></A><H3>
VersionComparator</H3>
<PRE>
public <A HREF="../../../../../src-html/org/apache/archiva/common/utils/VersionComparator.html#line.59"><B>VersionComparator</B></A>()</PRE>
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getInstance</H3>
<PRE>
public static <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</A>&lt;<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt; <A HREF="../../../../../src-html/org/apache/archiva/common/utils/VersionComparator.html#line.93"><B>getInstance</B></A>()</PRE>
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<A NAME="compare(java.lang.String, java.lang.String)"><!-- --></A><H3>
compare</H3>
<PRE>
public int <A HREF="../../../../../src-html/org/apache/archiva/common/utils/VersionComparator.html#line.98"><B>compare</B></A>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;o1,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;o2)</PRE>
<DL>
<DD><DL>
<DT><B>Specified by:</B><DD><CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Comparator.html?is-external=true#compare(T, T)" title="class or interface in java.util">compare</A></CODE> in interface <CODE><A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/util/Comparator.html?is-external=true" title="class or interface in java.util">Comparator</A>&lt;<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&gt;</CODE></DL>
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<A NAME="safePart(java.lang.String[], int)"><!-- --></A><H3>
safePart</H3>
<PRE>
private <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A> <A HREF="../../../../../src-html/org/apache/archiva/common/utils/VersionComparator.html#line.139"><B>safePart</B></A>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[]&nbsp;parts,
int&nbsp;idx)</PRE>
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<DD><DL>
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<A NAME="comparePart(java.lang.String, java.lang.String)"><!-- --></A><H3>
comparePart</H3>
<PRE>
private int <A HREF="../../../../../src-html/org/apache/archiva/common/utils/VersionComparator.html#line.149"><B>comparePart</B></A>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;s1,
<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;s2)</PRE>
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<A NAME="toParts(java.lang.String)"><!-- --></A><H3>
toParts</H3>
<PRE>
public static <A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>[] <A HREF="../../../../../src-html/org/apache/archiva/common/utils/VersionComparator.html#line.193"><B>toParts</B></A>(<A HREF="http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</A>&nbsp;version)</PRE>
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