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19 package org.eclipse.aether.util.graph.transformer;
20
21 import java.util.Collection;
22 import java.util.HashSet;
23 import java.util.Set;
24
25 import org.eclipse.aether.RepositoryException;
26 import org.eclipse.aether.util.artifact.JavaScopes;
27 import org.eclipse.aether.util.graph.transformer.ConflictResolver.ConflictContext;
28 import org.eclipse.aether.util.graph.transformer.ConflictResolver.ConflictItem;
29 import org.eclipse.aether.util.graph.transformer.ConflictResolver.ScopeSelector;
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36 public final class JavaScopeSelector extends ScopeSelector {
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41 public JavaScopeSelector() {}
42
43 @Override
44 public void selectScope(ConflictContext context) throws RepositoryException {
45 String scope = context.getWinner().getDependency().getScope();
46 if (!JavaScopes.SYSTEM.equals(scope)) {
47 scope = chooseEffectiveScope(context.getItems());
48 }
49 context.setScope(scope);
50 }
51
52 private String chooseEffectiveScope(Collection<ConflictItem> items) {
53 Set<String> scopes = new HashSet<>();
54 for (ConflictItem item : items) {
55 if (item.getDepth() <= 1) {
56 return item.getDependency().getScope();
57 }
58 scopes.addAll(item.getScopes());
59 }
60 return chooseEffectiveScope(scopes);
61 }
62
63 private String chooseEffectiveScope(Set<String> scopes) {
64 if (scopes.size() > 1) {
65 scopes.remove(JavaScopes.SYSTEM);
66 }
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68 String effectiveScope = "";
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70 if (scopes.size() == 1) {
71 effectiveScope = scopes.iterator().next();
72 } else if (scopes.contains(JavaScopes.COMPILE)) {
73 effectiveScope = JavaScopes.COMPILE;
74 } else if (scopes.contains(JavaScopes.RUNTIME)) {
75 effectiveScope = JavaScopes.RUNTIME;
76 } else if (scopes.contains(JavaScopes.PROVIDED)) {
77 effectiveScope = JavaScopes.PROVIDED;
78 } else if (scopes.contains(JavaScopes.TEST)) {
79 effectiveScope = JavaScopes.TEST;
80 }
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82 return effectiveScope;
83 }
84 }