--- /dev/null
+/*******************************************************************************
+ * Copyright (c) 2010, 2012 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.aether.artifact;
+
+import java.io.File;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
+
+/**
+ * A skeleton class for artifacts.
+ */
+public abstract class AbstractArtifact
+ implements Artifact
+{
+
+ private static final String SNAPSHOT = "SNAPSHOT";
+
+ private static final Pattern SNAPSHOT_TIMESTAMP = Pattern.compile( "^(.*-)?([0-9]{8}\\.[0-9]{6}-[0-9]+)$" );
+
+ public boolean isSnapshot()
+ {
+ return isSnapshot( getVersion() );
+ }
+
+ private static boolean isSnapshot( String version )
+ {
+ return version.endsWith( SNAPSHOT ) || SNAPSHOT_TIMESTAMP.matcher( version ).matches();
+ }
+
+ public String getBaseVersion()
+ {
+ return toBaseVersion( getVersion() );
+ }
+
+ private static String toBaseVersion( String version )
+ {
+ String baseVersion;
+
+ if ( version == null )
+ {
+ baseVersion = version;
+ }
+ else if ( version.startsWith( "[" ) || version.startsWith( "(" ) )
+ {
+ baseVersion = version;
+ }
+ else
+ {
+ Matcher m = SNAPSHOT_TIMESTAMP.matcher( version );
+ if ( m.matches() )
+ {
+ if ( m.group( 1 ) != null )
+ {
+ baseVersion = m.group( 1 ) + SNAPSHOT;
+ }
+ else
+ {
+ baseVersion = SNAPSHOT;
+ }
+ }
+ else
+ {
+ baseVersion = version;
+ }
+ }
+
+ return baseVersion;
+ }
+
+ /**
+ * Creates a new artifact with the specified coordinates, properties and file.
+ *
+ * @param version The version of the artifact, may be {@code null}.
+ * @param properties The properties of the artifact, may be {@code null} if none. The method may assume immutability
+ * of the supplied map, i.e. need not copy it.
+ * @param file The resolved file of the artifact, may be {@code null}.
+ * @return The new artifact instance, never {@code null}.
+ */
+ private Artifact newInstance( String version, Map<String, String> properties, File file )
+ {
+ return new DefaultArtifact( getGroupId(), getArtifactId(), getClassifier(), getExtension(), version, file,
+ properties );
+ }
+
+ public Artifact setVersion( String version )
+ {
+ String current = getVersion();
+ if ( current.equals( version ) || ( version == null && current.length() <= 0 ) )
+ {
+ return this;
+ }
+ return newInstance( version, getProperties(), getFile() );
+ }
+
+ public Artifact setFile( File file )
+ {
+ File current = getFile();
+ if ( ( current == null ) ? file == null : current.equals( file ) )
+ {
+ return this;
+ }
+ return newInstance( getVersion(), getProperties(), file );
+ }
+
+ public Artifact setProperties( Map<String, String> properties )
+ {
+ Map<String, String> current = getProperties();
+ if ( current.equals( properties ) || ( properties == null && current.isEmpty() ) )
+ {
+ return this;
+ }
+ return newInstance( getVersion(), copyProperties( properties ), getFile() );
+ }
+
+ public String getProperty( String key, String defaultValue )
+ {
+ String value = getProperties().get( key );
+ return ( value != null ) ? value : defaultValue;
+ }
+
+ /**
+ * Copies the specified artifact properties. This utility method should be used when creating new artifact instances
+ * with caller-supplied properties.
+ *
+ * @param properties The properties to copy, may be {@code null}.
+ * @return The copied and read-only properties, never {@code null}.
+ */
+ protected static Map<String, String> copyProperties( Map<String, String> properties )
+ {
+ if ( properties != null && !properties.isEmpty() )
+ {
+ return Collections.unmodifiableMap( new HashMap<String, String>( properties ) );
+ }
+ else
+ {
+ return Collections.emptyMap();
+ }
+ }
+
+ @Override
+ public String toString()
+ {
+ StringBuilder buffer = new StringBuilder( 128 );
+ buffer.append( getGroupId() );
+ buffer.append( ':' ).append( getArtifactId() );
+ buffer.append( ':' ).append( getExtension() );
+ if ( getClassifier().length() > 0 )
+ {
+ buffer.append( ':' ).append( getClassifier() );
+ }
+ buffer.append( ':' ).append( getVersion() );
+ return buffer.toString();
+ }
+
+ /**
+ * Compares this artifact with the specified object.
+ *
+ * @param obj The object to compare this artifact against, may be {@code null}.
+ * @return {@code true} if and only if the specified object is another {@link Artifact} with equal coordinates,
+ * properties and file, {@code false} otherwise.
+ */
+ @Override
+ public boolean equals( Object obj )
+ {
+ if ( obj == this )
+ {
+ return true;
+ }
+ else if ( !( obj instanceof Artifact ) )
+ {
+ return false;
+ }
+
+ Artifact that = (Artifact) obj;
+
+ return getArtifactId().equals( that.getArtifactId() ) && getGroupId().equals( that.getGroupId() )
+ && getVersion().equals( that.getVersion() ) && getExtension().equals( that.getExtension() )
+ && getClassifier().equals( that.getClassifier() ) && eq( getFile(), that.getFile() )
+ && getProperties().equals( that.getProperties() );
+ }
+
+ private static <T> boolean eq( T s1, T s2 )
+ {
+ return s1 != null ? s1.equals( s2 ) : s2 == null;
+ }
+
+ /**
+ * Returns a hash code for this artifact.
+ *
+ * @return A hash code for the artifact.
+ */
+ @Override
+ public int hashCode()
+ {
+ int hash = 17;
+ hash = hash * 31 + getGroupId().hashCode();
+ hash = hash * 31 + getArtifactId().hashCode();
+ hash = hash * 31 + getExtension().hashCode();
+ hash = hash * 31 + getClassifier().hashCode();
+ hash = hash * 31 + getVersion().hashCode();
+ hash = hash * 31 + hash( getFile() );
+ return hash;
+ }
+
+ private static int hash( Object obj )
+ {
+ return ( obj != null ) ? obj.hashCode() : 0;
+ }
+
+}
projects / gpl / argeo-jcr.git / blobdiff