1 package org.eclipse.aether.util.graph.transformer;
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22 import org.eclipse.aether.RepositoryException;
23 import org.eclipse.aether.collection.DependencyGraphTransformationContext;
24 import org.eclipse.aether.collection.DependencyGraphTransformer;
25 import org.eclipse.aether.graph.DependencyNode;
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27 import static java.util.Objects.requireNonNull;
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32 public final class ChainedDependencyGraphTransformer
33 implements DependencyGraphTransformer
34 {
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36 private final DependencyGraphTransformer[] transformers;
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43 public ChainedDependencyGraphTransformer( DependencyGraphTransformer... transformers )
44 {
45 if ( transformers == null )
46 {
47 this.transformers = new DependencyGraphTransformer[0];
48 }
49 else
50 {
51 this.transformers = transformers;
52 }
53 }
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63 public static DependencyGraphTransformer newInstance( DependencyGraphTransformer transformer1,
64 DependencyGraphTransformer transformer2 )
65 {
66 if ( transformer1 == null )
67 {
68 return transformer2;
69 }
70 else if ( transformer2 == null )
71 {
72 return transformer1;
73 }
74 return new ChainedDependencyGraphTransformer( transformer1, transformer2 );
75 }
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77 public DependencyNode transformGraph( DependencyNode node, DependencyGraphTransformationContext context )
78 throws RepositoryException
79 {
80 requireNonNull( node, "node cannot be null" );
81 requireNonNull( context, "context cannot be null" );
82 for ( DependencyGraphTransformer transformer : transformers )
83 {
84 node = transformer.transformGraph( node, context );
85 }
86 return node;
87 }
88
89 }