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Posted to commits@jackrabbit.apache.org by th...@apache.org on 2011/12/02 17:22:25 UTC
svn commit: r1209559 -
/jackrabbit/sandbox/microkernel/src/test/java/org/apache/jackrabbit/mk/util/NodeCreator.java
Author: thomasm
Date: Fri Dec 2 16:22:22 2011
New Revision: 1209559
URL: http://svn.apache.org/viewvc?rev=1209559&view=rev
Log:
A tool to create an arbitrary large tree of nested nodes.
Added:
jackrabbit/sandbox/microkernel/src/test/java/org/apache/jackrabbit/mk/util/NodeCreator.java
Added: jackrabbit/sandbox/microkernel/src/test/java/org/apache/jackrabbit/mk/util/NodeCreator.java
URL: http://svn.apache.org/viewvc/jackrabbit/sandbox/microkernel/src/test/java/org/apache/jackrabbit/mk/util/NodeCreator.java?rev=1209559&view=auto
==============================================================================
--- jackrabbit/sandbox/microkernel/src/test/java/org/apache/jackrabbit/mk/util/NodeCreator.java (added)
+++ jackrabbit/sandbox/microkernel/src/test/java/org/apache/jackrabbit/mk/util/NodeCreator.java Fri Dec 2 16:22:22 2011
@@ -0,0 +1,131 @@
+/*
+ * 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.mk.util;
+
+import org.apache.jackrabbit.mk.api.MicroKernel;
+
+/**
+ * A utility to create a (large) number of nodes in a tree structure.
+ */
+public class NodeCreator {
+
+ private final MicroKernel mk;
+ private String head;
+ private int totalCount = 200;
+ private int width = 30, count;
+ private StopWatch timer;
+ private String nodeName = "test";
+ private String data = "Hello World";
+
+ public NodeCreator(MicroKernel mk) {
+ this.mk = mk;
+ head = mk.getHeadRevision();
+ }
+
+ public void setWidth(int width) {
+ this.width = width;
+ }
+
+ public void setTotalCount(int totalCount) {
+ this.totalCount = totalCount;
+ }
+
+ public void setNodeName(String nodeName) {
+ this.nodeName = nodeName;
+ }
+
+ public void setData(String data) {
+ this.data = data;
+ }
+
+ public void create() {
+ head = mk.commit("/", "+\"" + nodeName + "\":{}", head, "");
+ timer = new StopWatch();
+ count = 0;
+ int depth = (int) Math.ceil(Math.log(totalCount) / Math.log(width));
+ log("depth: " + depth);
+ createNodes(nodeName, depth);
+ log("created " + count + " nodes in " + timer.operationsPerSecond(count));
+ }
+
+ public void traverse() {
+ timer = new StopWatch();
+ count = 0;
+ int depth = (int) Math.ceil(Math.log(totalCount) / Math.log(width));
+ log("depth: " + depth);
+ traverse(nodeName, depth);
+ log("read " + count + " nodes in " + timer.operationsPerSecond(count));
+ }
+
+ private void createNodes(String parent, int depth) {
+ if (count >= totalCount) {
+ return;
+ }
+ StringBuilder buff = new StringBuilder();
+ for (int i = 0; i < width; i++) {
+ if (count >= totalCount && depth == 0) {
+ break;
+ }
+ String p = parent + "/node" + depth + i;
+ buff.append("+ \"" + p + "\": {");
+ if (data != null) {
+ buff.append("\"data\":\"").append(data).append(" ").
+ append(count).append("\"");
+ }
+ count++;
+ buff.append("}\n");
+ if (count % 1000 == 0 && timer.log()) {
+ log(" " + count + " nodes in " + timer.operationsPerSecond(count));
+ }
+ }
+ head = mk.commit("/", buff.toString(), head, "");
+ if (depth > 0) {
+ for (int i = 0; i < width; i++) {
+ String p = parent + "/node" + depth + i;
+ createNodes(p, depth - 1);
+ }
+ }
+ }
+
+ private void traverse(String parent, int depth) {
+ if (count >= totalCount) {
+ return;
+ }
+ for (int i = 0; i < width; i++) {
+ if (count >= totalCount && depth == 0) {
+ break;
+ }
+ String p = parent + "/node" + depth + i;
+ if (!mk.nodeExists("/" + p, head)) {
+ break;
+ }
+ mk.getNodes("/" + p, head);
+ count++;
+ if (count % 1000 == 0 && timer.log()) {
+ log(" " + count + " nodes in " + timer.operationsPerSecond(count));
+ }
+ if (depth > 0) {
+ traverse(p, depth - 1);
+ }
+ }
+ }
+
+ private void log(String s) {
+ // System.out.println(s);
+ }
+
+}