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/*
* 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.test.api;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.apache.jackrabbit.test.AbstractJCRTest;
import javax.jcr.nodetype.NodeType;
import javax.jcr.Session;
import javax.jcr.Item;
import javax.jcr.Node;
import javax.jcr.PathNotFoundException;
import javax.jcr.RepositoryException;
import javax.jcr.NodeIterator;
import javax.jcr.PropertyType;
import javax.jcr.PropertyIterator;
import javax.jcr.Property;
import javax.jcr.Value;
import javax.jcr.ValueFormatException;
import javax.jcr.RangeIterator;
import java.io.IOException;
import java.io.ByteArrayOutputStream;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Stack;
import java.util.Hashtable;
import java.util.Enumeration;
import java.util.Iterator;
import java.util.Map;
import junit.framework.Assert;
/**
* ContentHandler implementation which checks if the system view export of
* a node tree is compliant to the specification.
*/
class SysViewContentHandler extends DefaultHandler {
// the session used
protected Session session;
// the path to start from
protected String path;
// the choices
boolean skipBinary;
boolean noRecurse;
// the nodeElem in process
NodeElemData currentNodeElem;
// the parenNodetElem of the currentNodeElem
NodeElemData parentNodeElem;
// the propElem in process
PropElemData currentPropElem;
// the valueElem in process
protected StringBuffer currentValue;
// prefix mapping data
protected Map prefixes;
// if the first node is yet treated
protected boolean testRootDone;
// The stack holding the opened nodeElems
Stack nodeElemStack;
// resolved QNames for well known node and property names
private String jcrRoot;
private String jcrPrimaryType;
private String jcrMixinTypes;
private String jcrUuid;
private String svNode;
private String svProperty;
private String svName;
private String svType;
private String svValue;
private String mixReferenceable;
/**
* Constructor
* @param path Thepath to the root node of the tree to be exported.
* @param session The session used.
* @param skipBinary Boolean if the binary properties are not exported.
* @param noRecurse Boolean if only the root node of the tree should be exported.
*/
public SysViewContentHandler(String path, Session session,
boolean skipBinary, boolean noRecurse) throws RepositoryException {
this.session = session;
this.path = path;
this.skipBinary = skipBinary;
this.noRecurse = noRecurse;
jcrRoot = session.getNamespacePrefix(AbstractJCRTest.NS_JCR_URI) + ":root";
jcrPrimaryType = session.getNamespacePrefix(AbstractJCRTest.NS_JCR_URI) + ":primaryType";
jcrMixinTypes = session.getNamespacePrefix(AbstractJCRTest.NS_JCR_URI) + ":mixinTypes";
jcrUuid = session.getNamespacePrefix(AbstractJCRTest.NS_JCR_URI) + ":uuid";
svNode = session.getNamespacePrefix(AbstractJCRTest.NS_SV_URI) + ":node";
svProperty = session.getNamespacePrefix(AbstractJCRTest.NS_SV_URI) + ":property";
svName = session.getNamespacePrefix(AbstractJCRTest.NS_SV_URI) + ":name";
svType = session.getNamespacePrefix(AbstractJCRTest.NS_SV_URI) + ":type";
svValue = session.getNamespacePrefix(AbstractJCRTest.NS_SV_URI) + ":value";
mixReferenceable = session.getNamespacePrefix(AbstractJCRTest.NS_MIX_URI) + ":referenceable";
}
/**
* Check if the given path is valid.
* Init the neccessary data.
* @throws SAXException
*/
public void startDocument() throws SAXException {
try {
// Check the given path, init the treeState stack
Item item = session.getItem(path);
checkCondition("TestPath "+path+" is not a path to a node.", item.isNode());
nodeElemStack = new Stack();
currentNodeElem = new NodeElemData();
currentNodeElem.name = item.getName();
currentNodeElem.node = (Node) item;
currentNodeElem.path = path;
prefixes = new HashMap();
testRootDone = false;
} catch (PathNotFoundException pe) {
checkCondition("TestPath " + path + " is not a valid path."
+ pe.toString(), false);
} catch (RepositoryException re) {
checkCondition("Could not determine test node: "
+ re.toString(), false);
}
}
// Collect all prefix mappings.
public void startPrefixMapping(String prefix, String uri) {
prefixes.put(prefix,uri);
}
public void startElement(String uri, String localName,
String qName, Attributes attributes) throws SAXException {
try {
if (qName.equals(svNode)) {
//attribute sv:name
String nodeName = attributes.getValue(svName);
if (noRecurse) {
if (!testRootDone) {
nodeElemStack.push(currentNodeElem);
testRootDone = true;
// correct root name?
if (currentNodeElem.node.getDepth()==0) {
checkCondition("Exported Root node has not the required " +
"element name 'jcr:root'.", nodeName.equals(jcrRoot));
}
// nothing else to do here
}
// rootNode yet done
else {
// only the testRootNode should be exported.
checkCondition("Child Node Element of testRoot Node " +
"element found although noRecursive is true.", !testRootDone);
}
}
else {
if (!testRootDone) {
nodeElemStack.push(currentNodeElem);
testRootDone = true;
// correct root name?
if (currentNodeElem.node.getDepth()==0) {
checkCondition("Exported Root node has not the required " +
"element name 'jcr:root'.", nodeName.equals(jcrRoot));
}
// nothing else to do here
}
// Collect the exported data in a NodeElemData object.
// every occurrence of an opened sv:node element
// creates such an object which will be put on the nodeElemStack.
// As this element will be popped from the stack when the node element
// is closed, the latest element on the stack represents the parent
// node element of the current node element.
else {
parentNodeElem = (NodeElemData) nodeElemStack.pop();
// get the node(s) with the found nodeName
NodeIterator nodeIter = parentNodeElem.node.getNodes(nodeName);
// create a new nodeElemData for this new node elem in process
currentNodeElem = new NodeElemData();
currentNodeElem.name = nodeName;
long size = getSize(nodeIter);
if (size >= 1) {
// Find the index of the child node,
// collect the childElems data of the parent
// ie for every name we count the number of child nodes with that name.
// Also get the child node with the correct index given by the
// position the node elem is found in the exported tree.
if (parentNodeElem.childNodeElemNames.containsKey(nodeName)) {
ChildNodeElem child =
(ChildNodeElem) parentNodeElem.childNodeElemNames.get(nodeName);
child.number++;
currentNodeElem.index = child.number;
// get the node
String relPath = currentNodeElem.name + "[" + child.number + "]";
currentNodeElem.node = parentNodeElem.node.getNode(relPath);
currentNodeElem.path = currentNodeElem.node.getPath();
parentNodeElem.childNodeElemNames.put(nodeName,child);
}
else {
ChildNodeElem child = new ChildNodeElem();
child.name = nodeName;
child.number = 1;
currentNodeElem.index = child.number;
// get the node
String relPath = currentNodeElem.name + "[" + child.number + "]";
currentNodeElem.node = parentNodeElem.node.getNode(relPath);
currentNodeElem.path = currentNodeElem.node.getPath();
parentNodeElem.childNodeElemNames.put(nodeName,child);
}
}
else {
// no node found, this is an error.
checkCondition("No child node of node "+ parentNodeElem.path
+ " found with name: " + nodeName,false);
}
// push the parent data and the current node element data on the stack
nodeElemStack.push(parentNodeElem);
nodeElemStack.push(currentNodeElem);
}
}
}
// Collect the property data found in a PropElemData object.
// Collect the value(s) found in an ArrayList.
else if (qName.equals(svProperty)) {
currentPropElem = new PropElemData();
currentPropElem.name = attributes.getValue(svName);
currentPropElem.typeName = attributes.getValue(svType);
currentPropElem.type = PropertyType.valueFromName(currentPropElem.typeName);
currentPropElem.values = new ArrayList();
}
else if (qName.equals(svValue)) {
// init
currentValue = new StringBuffer();
}
else {
// invalid element name is used
checkCondition("Invalid element name " + qName
+ " in SysView export found",false);
}
} catch (PathNotFoundException pne) {
checkCondition("Item not found during exportSysViewTest: "
+ pne.toString(), false);
} catch (RepositoryException re) {
// what here?
}
}
// Collect the value data
public void characters(char[] ch, int start, int length) throws SAXException {
if (currentValue != null)
currentValue.append(ch, start, length);
}
public void endElement (String uri, String localName, String qName)
throws SAXException {
try {
// The value is held in a ArrayList
// ignoring if it is a multivalue property or not.
if (qName.equals(svValue)) {
if (currentValue != null) {
String val = currentValue.toString();
if (currentPropElem.type != PropertyType.BINARY ||
(currentPropElem.type == PropertyType.BINARY && !skipBinary))
currentPropElem.values.add(val);
}
}
else if (qName.equals(svProperty)) {
// we know all props are exported before the first node
currentNodeElem = (NodeElemData) nodeElemStack.pop();
currentNodeElem.propElems.add(currentPropElem);
nodeElemStack.push(currentNodeElem);
}
else if (qName.equals(svNode)) {
currentNodeElem = (NodeElemData) nodeElemStack.peek();
// now check all the stuff
if (currentNodeElem.node == null) {
checkCondition("Tree structure of exported node does " +
"not match the tree structure of the repository.", false);
}
else {
// position of jcr:primaryType, jcr:mixinTypes and jcr:uuid if present
checkPropOrder(currentNodeElem);
// number of child nodes ok?
checkChildren(currentNodeElem, noRecurse);
// props and their values ok?
try {
checkAllProps(currentNodeElem, skipBinary);
// remove from the stack
nodeElemStack.pop();
}
catch (IOException ioe) {
checkCondition("Error in Base64 encoding " +
"of a binary property value: " + ioe.toString(), false);
}
}
}
else {
// invalid element name is used
checkCondition("Invalid element name " + qName +
" in SysView export found",false);
}
} catch (PathNotFoundException pne) {
checkCondition("Item not found during exportSysViewTest: " +
pne.toString(), false);
}
catch (RepositoryException re) {
// what here?
}
}
public void endDocument() throws SAXException {
// check exported namespaces
try {
Map sessionNamespaces = new HashMap();
String[] sessionPrefixes = session.getNamespacePrefixes();
for (int i = 0; i < sessionPrefixes.length; i++) {
sessionNamespaces.put(sessionPrefixes[i], session.getNamespaceURI(sessionPrefixes[i]));
}
// check prefixes against namespace mapping in session
for (Iterator it = prefixes.keySet().iterator(); it.hasNext(); ) {
String prefix = it.next();
if ("xml".equals(prefix)) {
Assert.fail("Prefix mapping for 'xml' must not be exported.");
}
String uri = prefixes.get(prefix);
checkCondition("Exported uri " + uri + " is not a registered namespace.",
sessionNamespaces.containsValue(uri));
checkCondition("Exported prefix " + prefix + " does not match " +
"current namespacce mapping in Session",
sessionNamespaces.containsKey(prefix));
}
} catch (RepositoryException re) {
throw new SAXException(re);
}
}
// helpers for test result forward
private void checkCondition(String str, boolean bool) {
Assert.assertTrue(str, bool);
}
public class ConditionException extends SAXException {
public ConditionException(String message) {
super(message);
}
}
//--------------helper methods to check the data ---------------------------------
/**
* Checks the correct position of the jcr:primarType, jcr:mixinTypes
* and jcr:uuid in the property elements of the given nodeElem.
* @param nodeElem
* @throws RepositoryException
*/
private void checkPropOrder(NodeElemData nodeElem)
throws RepositoryException, SAXException {
boolean jcrPrimaryTypeFound = false;
boolean jcrMixinTypesFound = true;
boolean uuidFound = true;
PropElemData propElem = nodeElem.propElems.get(0);
jcrPrimaryTypeFound = (jcrPrimaryType.equals(propElem.name));
checkCondition("Exported property jcr:primaryType of node " + nodeElem.path +
" is not at the first position.", jcrPrimaryTypeFound);
if (nodeElem.node.hasProperty(jcrMixinTypes)) {
PropElemData propElem2 = nodeElem.propElems.get(1);
jcrMixinTypesFound = (jcrMixinTypes.equals(propElem2.name));
checkCondition("Exported property jcr:jcrMixinTypes of node " + nodeElem.path +
" is not at the second position.", jcrMixinTypesFound);
NodeType[] mixins = nodeElem.node.getMixinNodeTypes();
for (int j=0; j propElems = nodeElem.propElems;
// no props exported
if (propElems.size() == 0) {
// if node has properties they should be of Binary type and skipBinary should be true
if (node.hasProperties()) {
if (skipBinary) {
PropertyIterator iter = node.getProperties();
while (iter.hasNext()) {
Property prop = iter.nextProperty();
checkCondition("Property " + prop.getName() + " of node "
+ node.getPath() + " is not exported.", prop.getType()== PropertyType.BINARY);
}
}
else {
checkCondition("One or more properties of node "
+ node.getPath() + " are not exported.", false);
}
}
else {
// ok
}
}
else {
// compare the propElems with the properties of the given node
for (int i = 0; i < propElems.size(); i++) {
correctVal = false;
PropElemData propElem = propElems.get(i);
int propType = propElem.type;
if (node.hasProperty(propElem.name)) {
Property prop = node.getProperty(propElem.name);
// compare the propTypes
correctVal = (propType == prop.getType());
checkCondition("Property type of property " + propElem.name
+ " of node " + nodeElem.path + " is not exported correctly."
+ "expected: "+prop.getType()+" received: "+propType, correctVal);
// property which should be exported
if (propType == PropertyType.BINARY && !skipBinary ||
propType != PropertyType.BINARY) {
try {
int size = propElem.values.size();
// multivalue property with empty value array
if (size == 0) {
if (prop.getDefinition().isMultiple()) {
long length = prop.getValues().length;
checkCondition("Value of property " + prop.getPath() +
" is not exported.", length == 0);
}
else {
checkCondition("Singler value property " + prop.getPath() +
" with no value is exported.", false);
}
}
// single value property or multivalue property with one value
if (size == 1) {
String str = "";
if (prop.getDefinition().isMultiple()) {
str = (prop.getValues()[0]).getString();
}
else {
str = prop.getString();
}
String val = propElem.values.get(0);
if (prop.getType() == PropertyType.BINARY) {
// decode value
val = decodeBase64(val);
}
correctVal = (str.equals(val));
checkCondition("Property value of property " + propElem.name
+ " of node " + nodeElem.path + " is not exported correctly:" +
" expected value: "+str+" found value: "+val, correctVal);
}
// multivalue property with several values
else {
Value[] vals = prop.getValues();
checkCondition("Number of exported values of property " +
prop.getPath() + " does not match the number " +
"its values", vals.length == size);
for (int j = 0; j < size; j++) {
// we know that the order of the values
// of a mulitval prop is preserved during export
String val = propElem.values.get(j);
if (prop.getType() == PropertyType.BINARY) {
// decode value
val = decodeBase64(val);
}
String str = vals[j].getString();
correctVal = (val.equals(str));
checkCondition("Property value of property " + propElem.name
+ " of node " + nodeElem.path +
" is not exported correctly.", correctVal);
}
}
} catch (ValueFormatException vfe ) {
checkCondition("Error during retreiviing the value(s)" +
" of property " + prop.getPath() + vfe.toString()
+ " .", false);
}
}
// skipBinary true and propType is Binary, should be skipped
else {
checkCondition("Value of binary property "+ prop.getPath()
+ " exported although skipBinary flag is true.",
propElem.values.isEmpty());
}
}
// given node has no property with the name given by the prop element
else {
checkCondition("Property element " + propElem.name
+ " found but node " + nodeElem.node.getPath() +
" does not have a property with that name", false);
}
}
// compare the sizes here
long otherSize = getSize(node.getProperties());
allFound = propElems.size() == otherSize;
checkCondition("Not all properties of node " +
nodeElem.path + " are exported.", allFound);
}
}
/**
* Counts the number of child nodes exported and compare with the number
* of child nodes of a given node.
* @param nodeElem The node to check.
* @param noRecurse Boolean if child nodes should be exported at all.
* @throws RepositoryException
*/
private void checkChildren(NodeElemData nodeElem, boolean noRecurse)
throws RepositoryException {
Hashtable childElemsFound = nodeElem.childNodeElemNames;
boolean totalSumOk = false;
boolean partialSumOk = true;
if (noRecurse) {
totalSumOk = (childElemsFound.size() == 0);
}
else {
// all children found if number of node.getNodes(name) is the same as found
// in childElemsFound and if sum(number of nodeGetNodes(names))
// == number of node.getNodes()
long childrenFound = 0;
NodeIterator nodeIter = nodeElem.node.getNodes();
long children = getSize(nodeIter);
for (Enumeration e = childElemsFound.elements(); e.hasMoreElements();) {
ChildNodeElem child = e.nextElement();
String name = child.name;
long number = child.number;
NodeIterator iter = nodeElem.node.getNodes(name);
long size = 0;
size = getSize(iter);
if (size != number) {
partialSumOk = false;
break;
}
else {
childrenFound += number;
}
}
totalSumOk = (children == childrenFound);
checkCondition("The number of child nodes of node" + nodeElem.path +
" which are exported does not match the number of its child nodes.",
totalSumOk && partialSumOk);
}
}
// helper methods
/**
* Decodes Base64 encoded binary values.
* @param str the string to decode
* @return
* @throws IOException
*/
private String decodeBase64(String str) throws IOException {
ByteArrayOutputStream bos = new ByteArrayOutputStream();
Base64.decode(str, bos);
String decoded = bos.toString("UTF-8");
return decoded;
}
/**
*
* @param it
* @return
*/
private long getSize(RangeIterator it) {
long size = it.getSize();
if (size != -1) {
return size;
}
size = 0;
while (it.hasNext()) {
it.next();
size++;
}
return size;
}
//---------------- helper classes for collecting the xml data found ----------------
/**
* Node data class holding the collected data found during event processing.
*/
private class NodeElemData {
// Name of the node
String name;
// the number of the occurence of this name as child element name
// this is then the same as the index of this node.
long index;
// the path of the node
String path;
// List of PropElemData
List propElems = new ArrayList();
// the node itself
Node node;
// the current position of the child node in process among its same name siblings.
// /the index of the child node in proces is therefore position+1)
int position = 0;
// the childNodeElems (stored are key: name and
// value: number of the same name siblings)
Hashtable childNodeElemNames = new Hashtable();
}
/**
* Property data of the current property element.
*/
private class PropElemData {
String name;
String typeName;
int type;
List values;
}
/**
* Child node data.
*/
private class ChildNodeElem {
String name;
long number;
}
}
