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Merge pull request #360 from jsight/WINDUP-371
WINDUP-371: Implement Roaster WildcardImportResolver SPI using Project's...
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101 changes: 101 additions & 0 deletions
101
...n/java/org/jboss/windup/rules/apps/java/scan/ast/WindupRoasterWildcardImportResolver.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,101 @@ | ||
| package org.jboss.windup.rules.apps.java.scan.ast; | ||
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| import java.util.HashMap; | ||
| import java.util.HashSet; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
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| import org.jboss.forge.roaster.model.JavaType; | ||
| import org.jboss.forge.roaster.model.source.Import; | ||
| import org.jboss.forge.roaster.model.source.Importer; | ||
| import org.jboss.forge.roaster.spi.WildcardImportResolver; | ||
| import org.jboss.windup.graph.GraphContext; | ||
| import org.jboss.windup.rules.apps.java.model.JavaClassModel; | ||
| import org.jboss.windup.rules.apps.java.service.JavaClassService; | ||
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| /** | ||
| * Provides a wildcard resolver for imports that attempts to search the graph for related types | ||
| * | ||
| */ | ||
| public class WindupRoasterWildcardImportResolver implements WildcardImportResolver | ||
| { | ||
| private static ThreadLocal<GraphContext> graphContextTL = new ThreadLocal<>(); | ||
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| /** | ||
| * Contains a map of class short names (eg, MyClass) to qualified names (eg, com.example.MyClass) | ||
| */ | ||
| private final Map<String, String> classNameToFQCN = new HashMap<>(); | ||
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| /** | ||
| * Indicates that we have already attempted to query the graph for this particular shortname. The shortname will exist here even if no results | ||
| * were found. | ||
| */ | ||
| private final Set<String> classNameLookedUp = new HashSet<>(); | ||
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| @Override | ||
| public String resolve(JavaType<?> source, String type) | ||
| { | ||
| GraphContext graphContext = getGraphContext(); | ||
| if (graphContext == null) | ||
| { | ||
| return type; | ||
| } | ||
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| // If the type contains a "." assume that it is fully qualified. | ||
| // FIXME - This is a carryover from the original Windup code, and I don't think | ||
| // that this assumption is valid. | ||
| // Check if we have already looked this one up | ||
| if (classNameLookedUp.contains(type)) | ||
| { | ||
| // if yes, then just use the looked up name from the map | ||
| String qualifiedName = classNameToFQCN.get(type); | ||
| if (qualifiedName != null) | ||
| { | ||
| return qualifiedName; | ||
| } | ||
| else | ||
| { | ||
| // otherwise, just return the provided name (unchanged) | ||
| return type; | ||
| } | ||
| } | ||
| else | ||
| { | ||
| // if this name has not been resolved before, go ahead and resolve it from the graph (if possible) | ||
| classNameLookedUp.add(type); | ||
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| // search every wildcard import for this name | ||
| Importer<?> importer = (Importer<?>) source; | ||
| for (Import importDeclaration : importer.getImports()) | ||
| { | ||
| if (importDeclaration.isWildcard()) | ||
| { | ||
| String wildcardImport = importDeclaration.getQualifiedName(); | ||
| String candidateQualifiedName = wildcardImport + "." + type; | ||
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| JavaClassService javaClassService = new JavaClassService(graphContext); | ||
| Iterable<JavaClassModel> models = javaClassService.findAllByProperty(JavaClassModel.PROPERTY_QUALIFIED_NAME, | ||
| candidateQualifiedName); | ||
| if (models.iterator().hasNext()) | ||
| { | ||
| // we found it... put it in the map and return the result | ||
| classNameToFQCN.put(type, candidateQualifiedName); | ||
| return candidateQualifiedName; | ||
| } | ||
| } | ||
| } | ||
| // nothing was found, so just return the original value | ||
| return type; | ||
| } | ||
| } | ||
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| private GraphContext getGraphContext() | ||
| { | ||
| return graphContextTL.get(); | ||
| } | ||
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| public static void setGraphContext(GraphContext graphContext) | ||
| { | ||
| graphContextTL.set(graphContext); | ||
| } | ||
| } |
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