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Add a convenience AstTransformation base class for BOMs
Plugin authors can extend this class, provide missing methods, and specify a BOM to add to the dependency management lookup (i.e. dependencies by artifactId)
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/*
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* Copyright 2014-2015 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.boot.cli.compiler;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import org.codehaus.groovy.ast.ASTNode;
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import org.codehaus.groovy.ast.AnnotatedNode;
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import org.codehaus.groovy.ast.AnnotationNode;
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import org.codehaus.groovy.ast.ClassHelper;
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import org.codehaus.groovy.ast.ClassNode;
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import org.codehaus.groovy.ast.ModuleNode;
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import org.codehaus.groovy.ast.PackageNode;
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import org.codehaus.groovy.ast.expr.ConstantExpression;
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import org.codehaus.groovy.ast.expr.Expression;
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import org.codehaus.groovy.ast.expr.ListExpression;
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import org.codehaus.groovy.control.CompilePhase;
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import org.codehaus.groovy.control.SourceUnit;
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import org.codehaus.groovy.transform.GroovyASTTransformation;
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import org.springframework.boot.groovy.DependencyManagementBom;
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import org.springframework.core.Ordered;
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/**
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* A base class that lets plugin authors easily add additional BOMs to all apps. All the
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* dependencies in the bom (and it's transitives) will be added to the dependency
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* management lookup, so an app can use just the artifact id (e.g. "spring-jdbc") in a
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* <code>@Grab</code>. To install, implement the missing methods and list the class in
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* <code>META-INF/services/org.springframework.boot.cli.compiler.SpringBootAstTransformation</code>
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* . The {@link #getOrder()} value needs to be before
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* {@link DependencyManagementBomTransformation#ORDER}.
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*
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* @author Dave Syer
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*
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*/
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@GroovyASTTransformation(phase = CompilePhase.CONVERSION)
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public abstract class GenericBomAstTransformation
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implements SpringBootAstTransformation, Ordered {
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private static ClassNode BOM = ClassHelper.make(DependencyManagementBom.class);
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@Override
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public void visit(ASTNode[] nodes, SourceUnit source) {
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for (ASTNode astNode : nodes) {
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if (astNode instanceof ModuleNode) {
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visitModule((ModuleNode) astNode, getBomModule());
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}
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}
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}
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/**
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* The bom to be added to dependency management in compact form:
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* <code>"<groupId>:<artifactId>:<version>"</code> (like in a
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* <code>@Grab</code>).
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*
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* @return the maven co-ordinates of the bom to add
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*/
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abstract protected String getBomModule();
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private void visitModule(ModuleNode node, String module) {
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addDependencyManagementBom(node, module);
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}
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private void addDependencyManagementBom(ModuleNode node, String module) {
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AnnotatedNode annotated = getAnnotatedNode(node);
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if (annotated != null) {
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AnnotationNode bom = getAnnotation(annotated);
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List<Expression> expressions = new ArrayList<Expression>(
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getConstantExpressions(bom.getMember("value")));
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expressions.add(new ConstantExpression(module));
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bom.setMember("value", new ListExpression(expressions));
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}
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}
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private AnnotationNode getAnnotation(AnnotatedNode annotated) {
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AnnotationNode annotation;
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List<AnnotationNode> annotations = annotated.getAnnotations(BOM);
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if (annotations.isEmpty()) {
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annotation = new AnnotationNode(BOM);
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annotated.addAnnotation(annotation);
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}
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else {
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annotation = annotations.get(0);
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}
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return annotation;
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}
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private AnnotatedNode getAnnotatedNode(ModuleNode node) {
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PackageNode pkg = node.getPackage();
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if (pkg != null) {
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if (!pkg.getAnnotations(BOM).isEmpty()) {
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return pkg;
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}
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}
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if (!node.getClasses().isEmpty()) {
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ClassNode cls = node.getClasses().get(0);
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return cls;
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}
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return pkg;
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}
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private List<ConstantExpression> getConstantExpressions(Expression valueExpression) {
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if (valueExpression instanceof ListExpression) {
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return getConstantExpressions((ListExpression) valueExpression);
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}
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if (valueExpression instanceof ConstantExpression
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&& ((ConstantExpression) valueExpression).getValue() instanceof String) {
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return Arrays.asList((ConstantExpression) valueExpression);
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}
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return Collections.emptyList();
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}
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private List<ConstantExpression> getConstantExpressions(
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ListExpression valueExpression) {
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List<ConstantExpression> expressions = new ArrayList<ConstantExpression>();
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for (Expression expression : valueExpression.getExpressions()) {
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if (expression instanceof ConstantExpression
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&& ((ConstantExpression) expression).getValue() instanceof String) {
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expressions.add((ConstantExpression) expression);
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}
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}
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return expressions;
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}
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}
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@ -0,0 +1,123 @@
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/*
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* Copyright 2012-2015 the original author or authors.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.springframework.boot.cli.compiler;
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import java.util.ArrayList;
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import java.util.List;
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import org.codehaus.groovy.ast.ASTNode;
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import org.codehaus.groovy.ast.AnnotationNode;
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import org.codehaus.groovy.ast.ClassHelper;
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import org.codehaus.groovy.ast.ClassNode;
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import org.codehaus.groovy.ast.ModuleNode;
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import org.codehaus.groovy.ast.PackageNode;
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import org.codehaus.groovy.ast.expr.ConstantExpression;
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import org.codehaus.groovy.ast.expr.Expression;
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import org.codehaus.groovy.ast.expr.ListExpression;
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import org.codehaus.groovy.control.SourceUnit;
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import org.codehaus.groovy.control.io.ReaderSource;
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import org.codehaus.groovy.transform.ASTTransformation;
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import org.junit.Test;
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import org.springframework.boot.groovy.DependencyManagementBom;
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import static org.junit.Assert.assertEquals;
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/**
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* Tests for {@link ResolveDependencyCoordinatesTransformation}
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*
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* @author Andy Wilkinson
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*/
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public final class GenericBomAstTransformationTests {
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private final SourceUnit sourceUnit = new SourceUnit((String) null,
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(ReaderSource) null, null, null, null);
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private final ModuleNode moduleNode = new ModuleNode(this.sourceUnit);
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private final ASTTransformation transformation = new GenericBomAstTransformation() {
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@Override
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public int getOrder() {
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return DependencyManagementBomTransformation.ORDER - 10;
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}
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@Override
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protected String getBomModule() {
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return "test:child:1.0.0";
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}
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};
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@Test
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public void transformationOfEmptyPackage() {
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this.moduleNode.setPackage(new PackageNode("foo"));
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this.transformation.visit(new ASTNode[] { this.moduleNode }, this.sourceUnit);
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assertEquals("[test:child:1.0.0]", getValue().toString());
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}
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@Test
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public void transformationOfClass() {
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this.moduleNode.addClass(ClassHelper.make("MyClass"));
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this.transformation.visit(new ASTNode[] { this.moduleNode }, this.sourceUnit);
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assertEquals("[test:child:1.0.0]", getValue().toString());
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}
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@Test
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public void transformationOfClassWithExistingManagedDependencies() {
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this.moduleNode.setPackage(new PackageNode("foo"));
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ClassNode cls = ClassHelper.make("MyClass");
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this.moduleNode.addClass(cls);
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AnnotationNode annotation = new AnnotationNode(
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ClassHelper.make(DependencyManagementBom.class));
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annotation.addMember("value", new ConstantExpression("test:parent:1.0.0"));
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cls.addAnnotation(annotation);
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this.transformation.visit(new ASTNode[] { this.moduleNode }, this.sourceUnit);
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assertEquals("[test:parent:1.0.0, test:child:1.0.0]", getValue().toString());
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}
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private List<String> getValue() {
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Expression expression = findAnnotation().getMember("value");
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if (expression instanceof ListExpression) {
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List<String> list = new ArrayList<String>();
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for (Expression ex : ((ListExpression) expression).getExpressions()) {
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list.add((String) ((ConstantExpression) ex).getValue());
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}
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return list;
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}
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else if (expression == null) {
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return null;
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}
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else {
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throw new IllegalStateException("Member 'value' is not a ListExpression");
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}
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}
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private AnnotationNode findAnnotation() {
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PackageNode pkg = this.moduleNode.getPackage();
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ClassNode bom = ClassHelper.make(DependencyManagementBom.class);
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if (pkg != null) {
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if (!pkg.getAnnotations(bom).isEmpty()) {
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return pkg.getAnnotations(bom).get(0);
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}
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}
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if (!this.moduleNode.getClasses().isEmpty()) {
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ClassNode cls = this.moduleNode.getClasses().get(0);
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return cls.getAnnotations(bom).get(0);
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}
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throw new IllegalStateException("No package or class node found");
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}
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}
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