X-Git-Url: http://git.argeo.org/?a=blobdiff_plain;f=org.argeo.slc.repo%2Fsrc%2Forg%2Feclipse%2Faether%2Fgraph%2FDefaultDependencyNode.java;fp=org.argeo.slc.repo%2Fsrc%2Forg%2Feclipse%2Faether%2Fgraph%2FDefaultDependencyNode.java;h=c702d2398ffb8cec047ea6deb8c1b414f2f0d6e6;hb=825d60c5348dbe3f5be25b0bccf7bdebfe694219;hp=0000000000000000000000000000000000000000;hpb=5e991fff5cba01858dcc5747a27e637325bc5c8e;p=gpl%2Fargeo-jcr.git

diff --git a/org.argeo.slc.repo/src/org/eclipse/aether/graph/DefaultDependencyNode.java b/org.argeo.slc.repo/src/org/eclipse/aether/graph/DefaultDependencyNode.java
new file mode 100644
index 0000000..c702d23
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+++ b/org.argeo.slc.repo/src/org/eclipse/aether/graph/DefaultDependencyNode.java
@@ -0,0 +1,359 @@
+/*******************************************************************************
+ * Copyright (c) 2010, 2013 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.graph;
+
+import java.util.ArrayList;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+import org.eclipse.aether.artifact.Artifact;
+import org.eclipse.aether.repository.RemoteRepository;
+import org.eclipse.aether.version.Version;
+import org.eclipse.aether.version.VersionConstraint;
+
+/**
+ * A node within a dependency graph.
+ */
+public final class DefaultDependencyNode
+    implements DependencyNode
+{
+
+    private List<DependencyNode> children;
+
+    private Dependency dependency;
+
+    private Artifact artifact;
+
+    private List<? extends Artifact> relocations;
+
+    private Collection<? extends Artifact> aliases;
+
+    private VersionConstraint versionConstraint;
+
+    private Version version;
+
+    private byte managedBits;
+
+    private List<RemoteRepository> repositories;
+
+    private String context;
+
+    private Map<Object, Object> data;
+
+    /**
+     * Creates a new node with the specified dependency.
+     * 
+     * @param dependency The dependency associated with this node, may be {@code null} for a root node.
+     */
+    public DefaultDependencyNode( Dependency dependency )
+    {
+        this.dependency = dependency;
+        artifact = ( dependency != null ) ? dependency.getArtifact() : null;
+        children = new ArrayList<DependencyNode>( 0 );
+        aliases = relocations = Collections.emptyList();
+        repositories = Collections.emptyList();
+        context = "";
+        data = Collections.emptyMap();
+    }
+
+    /**
+     * Creates a new root node with the specified artifact as its label. Note that the new node has no dependency, i.e.
+     * {@link #getDependency()} will return {@code null}. Put differently, the specified artifact will not be subject to
+     * dependency collection/resolution.
+     * 
+     * @param artifact The artifact to use as label for this node, may be {@code null}.
+     */
+    public DefaultDependencyNode( Artifact artifact )
+    {
+        this.artifact = artifact;
+        children = new ArrayList<DependencyNode>( 0 );
+        aliases = relocations = Collections.emptyList();
+        repositories = Collections.emptyList();
+        context = "";
+        data = Collections.emptyMap();
+    }
+
+    /**
+     * Creates a mostly shallow clone of the specified node. The new node has its own copy of any custom data and
+     * initially no children.
+     * 
+     * @param node The node to copy, must not be {@code null}.
+     */
+    public DefaultDependencyNode( DependencyNode node )
+    {
+        dependency = node.getDependency();
+        artifact = node.getArtifact();
+        children = new ArrayList<DependencyNode>( 0 );
+        setAliases( node.getAliases() );
+        setRequestContext( node.getRequestContext() );
+        setManagedBits( node.getManagedBits() );
+        setRelocations( node.getRelocations() );
+        setRepositories( node.getRepositories() );
+        setVersion( node.getVersion() );
+        setVersionConstraint( node.getVersionConstraint() );
+        Map<?, ?> data = node.getData();
+        setData( data.isEmpty() ? null : new HashMap<Object, Object>( data ) );
+    }
+
+    public List<DependencyNode> getChildren()
+    {
+        return children;
+    }
+
+    public void setChildren( List<DependencyNode> children )
+    {
+        if ( children == null )
+        {
+            this.children = new ArrayList<DependencyNode>( 0 );
+        }
+        else
+        {
+            this.children = children;
+        }
+    }
+
+    public Dependency getDependency()
+    {
+        return dependency;
+    }
+
+    public Artifact getArtifact()
+    {
+        return artifact;
+    }
+
+    public void setArtifact( Artifact artifact )
+    {
+        if ( dependency == null )
+        {
+            throw new UnsupportedOperationException( "node does not have a dependency" );
+        }
+        dependency = dependency.setArtifact( artifact );
+        this.artifact = dependency.getArtifact();
+    }
+
+    public List<? extends Artifact> getRelocations()
+    {
+        return relocations;
+    }
+
+    /**
+     * Sets the sequence of relocations that was followed to resolve this dependency's artifact.
+     * 
+     * @param relocations The sequence of relocations, may be {@code null}.
+     */
+    public void setRelocations( List<? extends Artifact> relocations )
+    {
+        if ( relocations == null || relocations.isEmpty() )
+        {
+            this.relocations = Collections.emptyList();
+        }
+        else
+        {
+            this.relocations = relocations;
+        }
+    }
+
+    public Collection<? extends Artifact> getAliases()
+    {
+        return aliases;
+    }
+
+    /**
+     * Sets the known aliases for this dependency's artifact.
+     * 
+     * @param aliases The known aliases, may be {@code null}.
+     */
+    public void setAliases( Collection<? extends Artifact> aliases )
+    {
+        if ( aliases == null || aliases.isEmpty() )
+        {
+            this.aliases = Collections.emptyList();
+        }
+        else
+        {
+            this.aliases = aliases;
+        }
+    }
+
+    public VersionConstraint getVersionConstraint()
+    {
+        return versionConstraint;
+    }
+
+    /**
+     * Sets the version constraint that was parsed from the dependency's version declaration.
+     * 
+     * @param versionConstraint The version constraint for this node, may be {@code null}.
+     */
+    public void setVersionConstraint( VersionConstraint versionConstraint )
+    {
+        this.versionConstraint = versionConstraint;
+    }
+
+    public Version getVersion()
+    {
+        return version;
+    }
+
+    /**
+     * Sets the version that was selected for the dependency's target artifact.
+     * 
+     * @param version The parsed version, may be {@code null}.
+     */
+    public void setVersion( Version version )
+    {
+        this.version = version;
+    }
+
+    public void setScope( String scope )
+    {
+        if ( dependency == null )
+        {
+            throw new UnsupportedOperationException( "node does not have a dependency" );
+        }
+        dependency = dependency.setScope( scope );
+    }
+
+    public void setOptional( Boolean optional )
+    {
+        if ( dependency == null )
+        {
+            throw new UnsupportedOperationException( "node does not have a dependency" );
+        }
+        dependency = dependency.setOptional( optional );
+    }
+
+    public int getManagedBits()
+    {
+        return managedBits;
+    }
+
+    /**
+     * Sets a bit field indicating which attributes of this node were subject to dependency management.
+     * 
+     * @param managedBits The bit field indicating the managed attributes or {@code 0} if dependency management wasn't
+     *            applied.
+     */
+    public void setManagedBits( int managedBits )
+    {
+        this.managedBits = (byte) ( managedBits & 0x1F );
+    }
+
+    public List<RemoteRepository> getRepositories()
+    {
+        return repositories;
+    }
+
+    /**
+     * Sets the remote repositories from which this node's artifact shall be resolved.
+     * 
+     * @param repositories The remote repositories to use for artifact resolution, may be {@code null}.
+     */
+    public void setRepositories( List<RemoteRepository> repositories )
+    {
+        if ( repositories == null || repositories.isEmpty() )
+        {
+            this.repositories = Collections.emptyList();
+        }
+        else
+        {
+            this.repositories = repositories;
+        }
+    }
+
+    public String getRequestContext()
+    {
+        return context;
+    }
+
+    public void setRequestContext( String context )
+    {
+        this.context = ( context != null ) ? context : "";
+    }
+
+    public Map<Object, Object> getData()
+    {
+        return data;
+    }
+
+    public void setData( Map<Object, Object> data )
+    {
+        if ( data == null )
+        {
+            this.data = Collections.emptyMap();
+        }
+        else
+        {
+            this.data = data;
+        }
+    }
+
+    public void setData( Object key, Object value )
+    {
+        if ( key == null )
+        {
+            throw new IllegalArgumentException( "key must not be null" );
+        }
+
+        if ( value == null )
+        {
+            if ( !data.isEmpty() )
+            {
+                data.remove( key );
+
+                if ( data.isEmpty() )
+                {
+                    data = Collections.emptyMap();
+                }
+            }
+        }
+        else
+        {
+            if ( data.isEmpty() )
+            {
+                data = new HashMap<Object, Object>( 1, 2 ); // nodes can be numerous so let's be space conservative
+            }
+            data.put( key, value );
+        }
+    }
+
+    public boolean accept( DependencyVisitor visitor )
+    {
+        if ( visitor.visitEnter( this ) )
+        {
+            for ( DependencyNode child : children )
+            {
+                if ( !child.accept( visitor ) )
+                {
+                    break;
+                }
+            }
+        }
+
+        return visitor.visitLeave( this );
+    }
+
+    @Override
+    public String toString()
+    {
+        Dependency dep = getDependency();
+        if ( dep == null )
+        {
+            return String.valueOf( getArtifact() );
+        }
+        return dep.toString();
+    }
+
+}