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TreeRootHolderRule.java
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TreeRootHolderRule.java
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/*
* SonarQube, open source software quality management tool.
* Copyright (C) 2008-2014 SonarSource
* mailto:contact AT sonarsource DOT com
*
* SonarQube is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 3 of the License, or (at your option) any later version.
*
* SonarQube is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
package org.sonar.server.computation.batch;
import java.util.HashMap;
import java.util.Map;
import java.util.Objects;
import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runners.model.Statement;
import org.sonar.server.computation.component.Component;
import org.sonar.server.computation.component.DepthTraversalTypeAwareCrawler;
import org.sonar.server.computation.component.MutableTreeRootHolder;
import org.sonar.server.computation.component.ReportTreeRootHolder;
import org.sonar.server.computation.component.TreeRootHolder;
import static org.sonar.server.computation.component.ComponentVisitor.Order.POST_ORDER;
public class TreeRootHolderRule implements TestRule, MutableTreeRootHolder, ReportTreeRootHolder {
private Component root;
private Map<Integer, Component> componentsByRef = new HashMap<>();
@Override
public Statement apply(final Statement statement, Description description) {
return new Statement() {
@Override
public void evaluate() throws Throwable {
try {
statement.evaluate();
} finally {
clear();
}
}
};
}
private void clear() {
this.root = null;
}
@Override
public Component getRoot() {
if (root == null) {
throw new IllegalStateException("Root has not been set in " + TreeRootHolder.class.getSimpleName());
}
return root;
}
@Override
public Component getComponentByRef(int ref) {
if (root == null) {
throw new IllegalStateException("Root has not been set in " + TreeRootHolder.class.getSimpleName());
}
Component component = componentsByRef.get(ref);
if (component == null) {
throw new IllegalArgumentException(String.format("Component '%s' hasn't been found", ref));
}
return component;
}
public TreeRootHolderRule setRoot(Component newRoot) {
this.root = Objects.requireNonNull(newRoot);
if (newRoot.getType().isReportType()) {
new DepthTraversalTypeAwareCrawler(Component.Type.FILE, POST_ORDER) {
@Override
public void visitAny(Component component) {
componentsByRef.put(component.getReportAttributes().getRef(), component);
}
}.visit(root);
}
return this;
}
}