SLC Repo building

[gpl/argeo-slc.git] / org.argeo.slc.support / src / org / argeo / slc / aether / ArtifactIdComparator.java

diff --git a/org.argeo.slc.support/src/org/argeo/slc/aether/ArtifactIdComparator.java b/org.argeo.slc.support/src/org/argeo/slc/aether/ArtifactIdComparator.java
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+++ b/org.argeo.slc.support/src/org/argeo/slc/aether/ArtifactIdComparator.java
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+/*
+ * Copyright (C) 2007-2012 Argeo GmbH
+ *
+ * Licensed 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.argeo.slc.aether;
+
+import java.util.Comparator;
+import java.util.TreeMap;
+import java.util.TreeSet;
+
+import org.eclipse.aether.artifact.Artifact;
+
+/**
+ * Compare two artifacts, for use in {@link TreeSet} / {@link TreeMap}, consider
+ * artifactId first THEN groupId
+ */
+public class ArtifactIdComparator implements Comparator<Artifact> {
+       public int compare(Artifact o1, Artifact o2) {
+               if (o1.getArtifactId().equals(o2.getArtifactId()))
+                       return o1.getGroupId().compareTo(o2.getGroupId());
+               return o1.getArtifactId().compareTo(o2.getArtifactId());
+       }
+
+}