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/*******************************************************************************
* Copyright (c) 2008-2010 Sonatype, Inc.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Sonatype, Inc. - initial API and implementation
*******************************************************************************/
package org.eclipse.m2e.core.internal.index;
import java.util.Comparator;
import java.util.Set;
import java.util.TreeSet;
import org.apache.maven.artifact.versioning.ArtifactVersion;
public class IndexedArtifact implements Comparable<IndexedArtifact> {
public static final Comparator<IndexedArtifactFile> FILE_INFO_COMPARATOR = new Comparator<IndexedArtifactFile>() {
public int compare(IndexedArtifactFile f1, IndexedArtifactFile f2) {
ArtifactVersion v1 = f1.getArtifactVersion();
ArtifactVersion v2 = f2.getArtifactVersion();
int r = -v1.compareTo(v2);
if(r != 0) {
return r;
}
String c1 = f1.classifier;
String c2 = f2.classifier;
if(c1 == null) {
return c2 == null ? 0 : -1;
}
if(c2 == null) {
return 1;
}
return c1.compareTo(c2);
}
};
private final String group;
private final String artifact;
private final String packageName;
private final String className;
private final String packaging;
//a non-zero odd-prime hash seed
private static final int SEED = 17;
/**
* Set<IndexedArtifactFile>
*/
private final Set<IndexedArtifactFile> files = new TreeSet<IndexedArtifactFile>(FILE_INFO_COMPARATOR);
public IndexedArtifact(String group, String artifact, String packageName, String className, String packaging) {
this.group = group;
this.artifact = artifact;
this.packageName = packageName;
this.className = className;
this.packaging = packaging;
}
public void addFile(IndexedArtifactFile indexedArtifactFile) {
getFiles().add(indexedArtifactFile);
}
public String getPackageName() {
if(packageName != null && packageName.startsWith(".") && packageName.length() > 1) { //$NON-NLS-1$
return packageName.substring(1);
}
return packageName;
}
public String toString() {
StringBuffer sb = new StringBuffer(
"\n" + getClassname() + " " + packageName + " " + getGroupId() + " : " + getArtifactId()); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$ //$NON-NLS-4$
return sb.toString();
}
public String getGroupId() {
return group;
}
public String getArtifactId() {
return artifact;
}
public String getPackaging() {
return packaging;
}
public String getClassname() {
return className;
}
public Set<IndexedArtifactFile> getFiles() {
return files;
}
/* (non-Javadoc)
* @see java.lang.Object#hashCode()
*/
public int hashCode() {
int result = SEED;
result *= fieldHash(getGroupId());
result *= fieldHash(getArtifactId());
result *= fieldHash(getPackaging());
result *= fieldHash(getClassname());
result *= fieldHash(getPackageName());
return result;
}
private int fieldHash(Object field) {
if(field == null) {
return SEED;
}
return field.hashCode();
}
/**
* Assumes all the fields are important for equals.
*/
public boolean equals(Object artifact) {
if(this == artifact) {
return true;
} else if(!(artifact instanceof IndexedArtifact)) {
return false;
} else {
IndexedArtifact other = (IndexedArtifact) artifact;
return fieldsEqual(this.getGroupId(), other.getGroupId())
&& fieldsEqual(this.getArtifactId(), other.getArtifactId())
&& fieldsEqual(this.getPackageName(), other.getPackageName())
&& fieldsEqual(this.getPackaging(), other.getPackaging())
&& fieldsEqual(this.getClassname(), other.getClassname());
}
}
private boolean fieldsEqual(Object field1, Object field2) {
return field1 == null ? field2 == null : field1.equals(field2);
}
public int compareTo(IndexedArtifact o) {
if(this.equals(o))
return 0;
int comparison = 0;
if(group != null && (comparison = group.compareTo(o.getGroupId())) != 0)
return comparison;
if(artifact != null && (comparison = artifact.compareTo(o.getArtifactId())) != 0)
return comparison;
if(packageName != null && (comparison = packageName.compareTo(o.getPackageName())) != 0)
return comparison;
if(className != null && (comparison = className.compareTo(o.getClassname())) != 0)
return comparison;
return 0;
}
}
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