/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.jackrabbit.oak.kernel;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.apache.jackrabbit.mk.api.MicroKernel;
import org.apache.jackrabbit.mk.core.MicroKernelImpl;
import org.apache.jackrabbit.oak.api.CommitFailedException;
import org.apache.jackrabbit.oak.api.PropertyState;
import org.apache.jackrabbit.oak.plugins.memory.MultiStringPropertyState;
import org.apache.jackrabbit.oak.spi.commit.CommitHook;
import org.apache.jackrabbit.oak.spi.commit.EmptyHook;
import org.apache.jackrabbit.oak.spi.commit.Observer;
import org.apache.jackrabbit.oak.spi.state.DefaultNodeStateDiff;
import org.apache.jackrabbit.oak.spi.state.NodeBuilder;
import org.apache.jackrabbit.oak.spi.state.NodeState;
import org.apache.jackrabbit.oak.spi.state.NodeStoreBranch;
import org.junit.Before;
import org.junit.Test;
import static junit.framework.Assert.assertFalse;
import static org.apache.jackrabbit.oak.api.Type.LONG;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
public class KernelNodeStoreTest {
private KernelNodeStore store;
private NodeState root;
@Before
public void setUp() {
MicroKernel kernel = new MicroKernelImpl();
String jsop =
"+\"test\":{\"a\":1,\"b\":2,\"c\":3,"
+ "\"x\":{},\"y\":{},\"z\":{}}";
kernel .commit("/", jsop, null, "test data");
store = new KernelNodeStore(kernel);
root = store.getRoot();
}
@Test
public void getRoot() {
assertEquals(root, store.getRoot());
assertEquals(root.getChildNode("test"), store.getRoot().getChildNode("test"));
assertEquals(root.getChildNode("test").getChildNode("x"),
store.getRoot().getChildNode("test").getChildNode("x"));
assertEquals(root.getChildNode("test").getChildNode("any"),
store.getRoot().getChildNode("test").getChildNode("any"));
assertEquals(root.getChildNode("test").getProperty("a"),
store.getRoot().getChildNode("test").getProperty("a"));
assertEquals(root.getChildNode("test").getProperty("any"),
store.getRoot().getChildNode("test").getProperty("any"));
}
@Test
public void branch() throws CommitFailedException {
NodeStoreBranch branch = store.branch();
NodeBuilder rootBuilder = branch.getHead().builder();
NodeBuilder testBuilder = rootBuilder.child("test");
NodeBuilder newNodeBuilder = testBuilder.child("newNode");
testBuilder.removeChildNode("x");
newNodeBuilder.setProperty("n", 42);
// Assert changes are present in the builder
NodeState testState = rootBuilder.getNodeState().getChildNode("test");
assertTrue(testState.getChildNode("newNode").exists());
assertFalse(testState.getChildNode("x").exists());
assertEquals(42, (long) testState.getChildNode("newNode").getProperty("n").getValue(LONG));
// Assert changes are not yet present in the branch
testState = branch.getHead().getChildNode("test");
assertFalse(testState.getChildNode("newNode").exists());
assertTrue(testState.getChildNode("x").exists());
branch.setRoot(rootBuilder.getNodeState());
// Assert changes are present in the branch
testState = branch.getHead().getChildNode("test");
assertTrue(testState.getChildNode("newNode").exists());
assertFalse(testState.getChildNode("x").exists());
assertEquals(42, (long) testState.getChildNode("newNode").getProperty("n").getValue(LONG));
// Assert changes are not yet present in the trunk
testState = store.getRoot().getChildNode("test");
assertFalse(testState.getChildNode("newNode").exists());
assertTrue(testState.getChildNode("x").exists());
branch.merge(EmptyHook.INSTANCE);
// Assert changes are present in the trunk
testState = store.getRoot().getChildNode("test");
assertTrue(testState.getChildNode("newNode").exists());
assertFalse(testState.getChildNode("x").exists());
assertEquals(42, (long) testState.getChildNode("newNode").getProperty("n").getValue(LONG));
}
@Test
public void afterCommitHook() throws CommitFailedException {
final NodeState[] states = new NodeState[2]; // { before, after }
store.setObserver(new Observer() {
@Override
public void contentChanged(NodeState before, NodeState after) {
states[0] = before;
states[1] = after;
}
});
NodeState root = store.getRoot();
NodeBuilder rootBuilder= root.builder();
NodeBuilder testBuilder = rootBuilder.child("test");
NodeBuilder newNodeBuilder = testBuilder.child("newNode");
newNodeBuilder.setProperty("n", 42);
testBuilder.removeChildNode("a");
NodeState newRoot = rootBuilder.getNodeState();
NodeStoreBranch branch = store.branch();
branch.setRoot(newRoot);
branch.merge(EmptyHook.INSTANCE);
store.getRoot(); // triggers the observer
NodeState before = states[0];
NodeState after = states[1];
assertNotNull(before);
assertNotNull(after);
assertFalse(before.getChildNode("test").getChildNode("newNode").exists());
assertTrue(after.getChildNode("test").getChildNode("newNode").exists());
assertFalse(after.getChildNode("test").getChildNode("a").exists());
assertEquals(42, (long) after.getChildNode("test").getChildNode("newNode").getProperty("n").getValue(LONG));
assertEquals(newRoot, after);
}
@Test
public void beforeCommitHook() throws CommitFailedException {
NodeState root = store.getRoot();
NodeBuilder rootBuilder = root.builder();
NodeBuilder testBuilder = rootBuilder.child("test");
NodeBuilder newNodeBuilder = testBuilder.child("newNode");
newNodeBuilder.setProperty("n", 42);
testBuilder.removeChildNode("a");
NodeState newRoot = rootBuilder.getNodeState();
NodeStoreBranch branch = store.branch();
branch.setRoot(newRoot);
branch.merge(new CommitHook() {
@Override
public NodeState processCommit(NodeState before, NodeState after) {
NodeBuilder rootBuilder = after.builder();
NodeBuilder testBuilder = rootBuilder.child("test");
testBuilder.child("fromHook");
return rootBuilder.getNodeState();
}
});
NodeState test = store.getRoot().getChildNode("test");
assertTrue(test.getChildNode("newNode").exists());
assertTrue(test.getChildNode("fromHook").exists());
assertFalse(test.getChildNode("a").exists());
assertEquals(42, (long) test.getChildNode("newNode").getProperty("n").getValue(LONG));
assertEquals(test, store.getRoot().getChildNode("test"));
}
@Test
public void manyChildNodes() throws CommitFailedException {
NodeStoreBranch branch = store.branch();
NodeBuilder root = branch.getHead().builder();
NodeBuilder parent = root.child("parent");
for (int i = 0; i <= KernelNodeState.MAX_CHILD_NODE_NAMES; i++) {
parent.child("child-" + i);
}
branch.setRoot(root.getNodeState());
branch.merge(EmptyHook.INSTANCE);
NodeState base = store.getRoot();
branch = store.branch();
root = branch.getHead().builder();
parent = root.child("parent");
parent.child("child-new");
branch.setRoot(root.getNodeState());
branch.merge(EmptyHook.INSTANCE);
Diff diff = new Diff();
store.getRoot().compareAgainstBaseState(base, diff);
assertEquals(0, diff.removed.size());
assertEquals(1, diff.added.size());
assertEquals("child-new", diff.added.get(0));
base = store.getRoot();
branch = store.branch();
branch.move("/parent/child-new", "/parent/child-moved");
branch.merge(EmptyHook.INSTANCE);
diff = new Diff();
store.getRoot().compareAgainstBaseState(base, diff);
assertEquals(1, diff.removed.size());
assertEquals("child-new", diff.removed.get(0));
assertEquals(1, diff.added.size());
assertEquals("child-moved", diff.added.get(0));
base = store.getRoot();
branch = store.branch();
root = branch.getHead().builder();
parent = root.child("parent");
parent.child("child-moved").setProperty("foo", "value");
parent.child("child-moved").setProperty(
new MultiStringPropertyState("bar", Arrays.asList("value")));
branch.setRoot(root.getNodeState());
branch.merge(EmptyHook.INSTANCE);
diff = new Diff();
store.getRoot().compareAgainstBaseState(base, diff);
assertEquals(0, diff.removed.size());
assertEquals(0, diff.added.size());
assertEquals(2, diff.addedProperties.size());
assertTrue(diff.addedProperties.contains("foo"));
assertTrue(diff.addedProperties.contains("bar"));
base = store.getRoot();
branch = store.branch();
root = branch.getHead().builder();
parent = root.child("parent");
parent.setProperty("foo", "value");
parent.setProperty(new MultiStringPropertyState(
"bar", Arrays.asList("value")));
branch.setRoot(root.getNodeState());
branch.merge(EmptyHook.INSTANCE);
diff = new Diff();
store.getRoot().compareAgainstBaseState(base, diff);
assertEquals(0, diff.removed.size());
assertEquals(0, diff.added.size());
assertEquals(2, diff.addedProperties.size());
assertTrue(diff.addedProperties.contains("foo"));
assertTrue(diff.addedProperties.contains("bar"));
base = store.getRoot();
branch = store.branch();
root = branch.getHead().builder();
parent = root.child("parent");
parent.removeChildNode("child-moved");
branch.setRoot(root.getNodeState());
branch.merge(EmptyHook.INSTANCE);
diff = new Diff();
store.getRoot().compareAgainstBaseState(base, diff);
assertEquals(1, diff.removed.size());
assertEquals(0, diff.added.size());
assertEquals("child-moved", diff.removed.get(0));
}
private static class Diff extends DefaultNodeStateDiff {
List<String> addedProperties = new ArrayList<String>();
List<String> added = new ArrayList<String>();
List<String> removed = new ArrayList<String>();
@Override
public boolean childNodeAdded(String name, NodeState after) {
added.add(name);
return true;
}
@Override
public boolean childNodeDeleted(String name, NodeState before) {
removed.add(name);
return true;
}
@Override
public boolean childNodeChanged(
String name, NodeState before, NodeState after) {
return after.compareAgainstBaseState(before, this);
}
@Override
public boolean propertyAdded(PropertyState after) {
addedProperties.add(after.getName());
return true;
}
}
}