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package com.sun.tools.ws.wsdl.parser;
import com.sun.istack.NotNull;
import com.sun.tools.ws.util.xml.XmlUtil;
import com.sun.tools.ws.wscompile.ErrorReceiver;
import com.sun.tools.ws.wscompile.WsimportOptions;
import com.sun.tools.ws.wsdl.document.schema.SchemaConstants;
import com.sun.tools.xjc.reader.internalizer.LocatorTable;
import com.sun.xml.bind.marshaller.DataWriter;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.xml.sax.ContentHandler;
import org.xml.sax.*;
import org.xml.sax.helpers.XMLFilterImpl;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParserFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.sax.SAXResult;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.*;
import java.util.*;
/**
* @author Vivek Pandey
*/
public class DOMForest {
/**
* To correctly feed documents to a schema parser, we need to remember
* which documents (of the forest) were given as the root
* documents, and which of them are read as included/imported
* documents.
*
*
* Set of system ids as strings.
*/
protected final Set rootDocuments = new HashSet();
/**
* Contains wsdl:import(s)
*/
protected final Set externalReferences = new HashSet();
/**
* actual data storage map<SystemId,Document>.
*/
protected final Map core = new HashMap();
protected final ErrorReceiver errorReceiver;
private final DocumentBuilder documentBuilder;
private final SAXParserFactory parserFactory;
/**
* inlined schema elements inside wsdl:type section
*/
protected final List inlinedSchemaElements = new ArrayList();
/**
* Stores location information for all the trees in this forest.
*/
public final LocatorTable locatorTable = new LocatorTable();
protected final EntityResolver entityResolver;
/**
* Stores all the outer-most <jaxb:bindings> customizations.
*/
public final Set outerMostBindings = new HashSet();
/**
* Schema language dependent part of the processing.
*/
protected final InternalizationLogic logic;
protected final WsimportOptions options;
public DOMForest(InternalizationLogic logic, @NotNull EntityResolver entityResolver, WsimportOptions options, ErrorReceiver errReceiver) {
this.options = options;
this.entityResolver = entityResolver;
this.errorReceiver = errReceiver;
this.logic = logic;
// secure xml processing can be switched off if input requires it
boolean disableXmlSecurity = options == null ? false : options.disableXmlSecurity;
DocumentBuilderFactory dbf = XmlUtil.newDocumentBuilderFactory(disableXmlSecurity);
this.parserFactory = XmlUtil.newSAXParserFactory(disableXmlSecurity);
try {
this.documentBuilder = dbf.newDocumentBuilder();
} catch (ParserConfigurationException e) {
throw new AssertionError(e);
}
}
public List getInlinedSchemaElement() {
return inlinedSchemaElements;
}
public @NotNull Document parse(InputSource source, boolean root) throws SAXException, IOException {
if (source.getSystemId() == null)
throw new IllegalArgumentException();
return parse(source.getSystemId(), source, root);
}
/**
* Parses an XML at the given location (
* and XMLs referenced by it) into DOM trees
* and stores them to this forest.
*
* @return the parsed DOM document object.
*/
public Document parse(String systemId, boolean root) throws SAXException, IOException{
systemId = normalizeSystemId(systemId);
InputSource is = null;
// allow entity resolver to find the actual byte stream.
is = entityResolver.resolveEntity(null, systemId);
if (is == null)
is = new InputSource(systemId);
else {
resolvedCache.put(systemId, is.getSystemId());
systemId=is.getSystemId();
}
if (core.containsKey(systemId)) {
// this document has already been parsed. Just ignore.
return core.get(systemId);
}
if(!root)
addExternalReferences(systemId);
// but we still use the original system Id as the key.
return parse(systemId, is, root);
}
protected Map resolvedCache = new HashMap();
public Map getReferencedEntityMap() {
return resolvedCache;
}
/**
* Parses the given document and add it to the DOM forest.
*
* @return null if there was a parse error. otherwise non-null.
*/
private @NotNull Document parse(String systemId, InputSource inputSource, boolean root) throws SAXException, IOException{
Document dom = documentBuilder.newDocument();
systemId = normalizeSystemId(systemId);
// put into the map before growing a tree, to
// prevent recursive reference from causing infinite loop.
core.put(systemId, dom);
dom.setDocumentURI(systemId);
if (root)
rootDocuments.add(systemId);
try {
XMLReader reader = createReader(dom);
InputStream is = null;
if(inputSource.getByteStream() == null){
inputSource = entityResolver.resolveEntity(null, systemId);
}
reader.parse(inputSource);
Element doc = dom.getDocumentElement();
if (doc == null) {
return null;
}
NodeList schemas = doc.getElementsByTagNameNS(SchemaConstants.NS_XSD, "schema");
for (int i = 0; i < schemas.getLength(); i++) {
inlinedSchemaElements.add((Element) schemas.item(i));
}
} catch (ParserConfigurationException e) {
errorReceiver.error(e);
throw new SAXException(e.getMessage());
}
resolvedCache.put(systemId, dom.getDocumentURI());
return dom;
}
public void addExternalReferences(String ref) {
if (!externalReferences.contains(ref))
externalReferences.add(ref);
}
public Set getExternalReferences() {
return externalReferences;
}
public interface Handler extends ContentHandler {
/**
* Gets the DOM that was built.
*/
public Document getDocument();
}
/**
* Returns a {@link org.xml.sax.XMLReader} to parse a document into this DOM forest.
*
* This version requires that the DOM object to be created and registered
* to the map beforehand.
*/
private XMLReader createReader(Document dom) throws SAXException, ParserConfigurationException {
XMLReader reader = parserFactory.newSAXParser().getXMLReader();
DOMBuilder dombuilder = new DOMBuilder(dom, locatorTable, outerMostBindings);
try {
reader.setProperty("http://xml.org/sax/properties/lexical-handler", dombuilder);
} catch(SAXException e) {
errorReceiver.debug(e.getMessage());
}
ContentHandler handler = new WhitespaceStripper(dombuilder, errorReceiver, entityResolver);
handler = new VersionChecker(handler, errorReceiver, entityResolver);
// insert the reference finder so that
// included/imported schemas will be also parsed
XMLFilterImpl f = logic.createExternalReferenceFinder(this);
f.setContentHandler(handler);
if (errorReceiver != null)
f.setErrorHandler(errorReceiver);
f.setEntityResolver(entityResolver);
reader.setContentHandler(f);
if (errorReceiver != null)
reader.setErrorHandler(errorReceiver);
reader.setEntityResolver(entityResolver);
return reader;
}
private String normalizeSystemId(String systemId) {
try {
systemId = new URI(systemId).normalize().toString();
} catch (URISyntaxException e) {
// leave the system ID untouched. In my experience URI is often too strict
}
return systemId;
}
boolean isExtensionMode() {
return options.isExtensionMode();
}
/**
* Gets the DOM tree associated with the specified system ID,
* or null if none is found.
*/
public Document get(String systemId) {
Document doc = core.get(systemId);
if (doc == null && systemId.startsWith("file:/") && !systemId.startsWith("file://")) {
// As of JDK1.4, java.net.URL.toExternal method returns URLs like
// "file:/abc/def/ghi" which is an incorrect file protocol URL according to RFC1738.
// Some other correctly functioning parts return the correct URLs ("file:///abc/def/ghi"),
// and this descripancy breaks DOM look up by system ID.
// this extra check solves this problem.
doc = core.get("file://" + systemId.substring(5));
}
if (doc == null && systemId.startsWith("file:")) {
// on Windows, filenames are case insensitive.
// perform case-insensitive search for improved user experience
String systemPath = getPath(systemId);
for (String key : core.keySet()) {
if (key.startsWith("file:") && getPath(key).equalsIgnoreCase(systemPath)) {
doc = core.get(key);
break;
}
}
}
return doc;
}
/**
* Strips off the leading 'file:///' portion from an URL.
*/
private String getPath(String key) {
key = key.substring(5); // skip 'file:'
while (key.length() > 0 && key.charAt(0) == '/')
key = key.substring(1);
return key;
}
/**
* Gets all the system IDs of the documents.
*/
public String[] listSystemIDs() {
return core.keySet().toArray(new String[core.keySet().size()]);
}
/**
* Gets the system ID from which the given DOM is parsed.
*
* Poor-man's base URI.
*/
public String getSystemId(Document dom) {
for (Map.Entry e : core.entrySet()) {
if (e.getValue() == dom)
return e.getKey();
}
return null;
}
/**
* Gets the first one (which is more or less random) in {@link #rootDocuments}.
*/
public String getFirstRootDocument() {
if(rootDocuments.isEmpty()) return null;
return rootDocuments.iterator().next();
}
public Set getRootDocuments() {
return rootDocuments;
}
/**
* Dumps the contents of the forest to the specified stream.
*
* This is a debug method. As such, error handling is sloppy.
*/
public void dump(OutputStream out) throws IOException {
try {
// create identity transformer
// secure xml processing can be switched off if input requires it
boolean secureProcessingEnabled = options == null || !options.disableXmlSecurity;
TransformerFactory tf = XmlUtil.newTransformerFactory(secureProcessingEnabled);
Transformer it = tf.newTransformer();
for (Map.Entry e : core.entrySet()) {
out.write(("---<< " + e.getKey() + '\n').getBytes());
DataWriter dw = new DataWriter(new OutputStreamWriter(out), null);
dw.setIndentStep(" ");
it.transform(new DOMSource(e.getValue()),
new SAXResult(dw));
out.write("\n\n\n".getBytes());
}
} catch (TransformerException e) {
e.printStackTrace();
}
}
}
