// private methods
private synchronized void writeToSAX(ContentHandler handler) {
// nothing must go wrong with this parse...
SAXParser parser = fGrammar.getSAXParser();
StringReader aReader = new StringReader(fData);
InputSource aSource = new InputSource(aReader);
parser.setContentHandler(handler);
try {
parser.parse(aSource);
} catch (SAXException e) {
// this should never happen!
// REVISIT: what to do with this?; should really not
// eat it...
} catch (IOException i) {
// ditto with above
}
}
/**
* Create a IncrementalSAXSource_Xerces, and create a SAXParser to go with it. Xerces2 incremental
* parsing is only supported if this constructor is used, due to limitations in the Xerces2 API
* (as of Beta 3). If you don't like that restriction, tell the Xerces folks that there should be
* a simpler way to request incremental SAX parsing.
*/
public IncrementalSAXSource_Xerces() throws NoSuchMethodException {
try {
// Xerces-2 incremental parsing support (as of Beta 3)
// ContentHandlers still get set on fIncrementalParser (to get
// conversion from XNI events to SAX events), but
// _control_ for incremental parsing must be exercised via the config.
//
// At this time there's no way to read the existing config, only
// to assert a new one... and only when creating a brand-new parser.
//
// Reflection is used to allow us to continue to compile against
// Xerces1. If/when we can abandon the older versions of the parser,
// this will simplify significantly.
Class me = this.getClass();
// If we can't get the magic constructor, no need to look further.
Class xniConfigClass = me.forName("org.apache.xerces.xni.parser.XMLParserConfiguration");
Class[] args1 = {xniConfigClass};
Constructor ctor = SAXParser.class.getConstructor(args1);
// Build the parser configuration object. StandardParserConfiguration
// happens to implement XMLPullParserConfiguration, which is the API
// we're going to want to use.
Class xniStdConfigClass = me.forName("org.apache.xerces.parsers.StandardParserConfiguration");
fPullParserConfig = xniStdConfigClass.newInstance();
Object[] args2 = {fPullParserConfig};
fIncrementalParser = (SAXParser) ctor.newInstance(args2);
// Preload all the needed the configuration methods... I want to know they're
// all here before we commit to trying to use them, just in case the
// API changes again.
Class fXniInputSourceClass = me.forName("org.apache.xerces.xni.parser.XMLInputSource");
Class[] args3 = {fXniInputSourceClass};
fConfigSetInput = xniStdConfigClass.getMethod("setInputSource", args3);
Class[] args4 = {String.class, String.class, String.class};
fConfigInputSourceCtor = fXniInputSourceClass.getConstructor(args4);
Class[] args5 = {java.io.InputStream.class};
fConfigSetByteStream = fXniInputSourceClass.getMethod("setByteStream", args5);
Class[] args6 = {java.io.Reader.class};
fConfigSetCharStream = fXniInputSourceClass.getMethod("setCharacterStream", args6);
Class[] args7 = {String.class};
fConfigSetEncoding = fXniInputSourceClass.getMethod("setEncoding", args7);
Class[] argsb = {Boolean.TYPE};
fConfigParse = xniStdConfigClass.getMethod("parse", argsb);
Class[] noargs = new Class[0];
fReset = fIncrementalParser.getClass().getMethod("reset", noargs);
} catch (Exception e) {
// Fallback if this fails (implemented in createIncrementalSAXSource) is
// to attempt Xerces-1 incremental setup. Can't do tail-call in
// constructor, so create new, copy Xerces-1 initialization,
// then throw it away... Ugh.
IncrementalSAXSource_Xerces dummy = new IncrementalSAXSource_Xerces(new SAXParser());
this.fParseSomeSetup = dummy.fParseSomeSetup;
this.fParseSome = dummy.fParseSome;
this.fIncrementalParser = dummy.fIncrementalParser;
}
}
/**
* Create a IncrementalSAXSource_Xerces wrapped around an existing SAXParser. Currently this works
* only for recent releases of Xerces-1. Xerces-2 incremental is currently possible only if we are
* allowed to create the parser instance, due to limitations in the API exposed by Xerces-2 Beta
* 3; see the no-args constructor for that code.
*
* @exception if the SAXParser class doesn't support the Xerces incremental parse operations. In
* that case, caller should fall back upon the IncrementalSAXSource_Filter approach.
*/
public IncrementalSAXSource_Xerces(SAXParser parser) throws NoSuchMethodException {
// Reflection is used to allow us to compile against
// Xerces2. If/when we can abandon the older versions of the parser,
// this constructor will simply have to fail until/unless the
// Xerces2 incremental support is made available on previously
// constructed SAXParser instances.
fIncrementalParser = parser;
Class me = parser.getClass();
Class[] parms = {InputSource.class};
fParseSomeSetup = me.getMethod("parseSomeSetup", parms);
parms = new Class[0];
fParseSome = me.getMethod("parseSome", parms);
// Fallback if this fails (implemented in createIncrementalSAXSource) is
// to use IncrementalSAXSource_Filter rather than Xerces-specific code.
}
private void parseDocument(Boolean typeFile, String reportName) {
final InputStream jasperreportDtd =
ReportManager.class
.getClassLoader()
.getResourceAsStream("net/sf/jasperreports/engine/dtds/jasperreport.dtd");
InputStream xmlSource = null;
parsingStart = System.currentTimeMillis();
log.debug("parseDocument - [start] " + reportName);
try {
SAXParser sp = new SAXParser();
log.debug(
"parseDocument - newSAXParser=" + (System.currentTimeMillis() - parsingStart) + " ms.");
ClassLoader loader = (ReportManager.class).getClassLoader();
File f = null;
try {
if (typeFile == true) f = new File(loader.getResource(reportName).toURI());
else f = new File(reportName);
} catch (URISyntaxException e) {
e.printStackTrace();
}
log.debug(
"parseDocument - getResource=" + (System.currentTimeMillis() - parsingStart) + " ms.");
xmlSource = new FileInputStream(f);
sp.setContentHandler(this);
sp.setEntityResolver(
new EntityResolver() {
public InputSource resolveEntity(String publicId, String systemId)
throws SAXException, IOException {
if (publicId.equals("//JasperReports//DTD Report Design//EN")
|| systemId.equals(
"http://jasperreports.sourceforge.net/dtds/jasperreport.dtd")) {
return new InputSource(jasperreportDtd);
} else {
String msg =
"DTD ("
+ publicId
+ " "
+ systemId
+ ") cannot be resolved by ReportManager: "
+ "please change TNTConcept to add the new DTD or change your JasperReport's JRXML file "
+ "to use the standard DTD";
log.error("parseDocument - " + msg);
throw new IllegalArgumentException(msg);
}
}
});
sp.parse(new InputSource(xmlSource));
} catch (FinalizeParsingException fpe) {
// ignore this exception as it is thrown as an optimization
} catch (SAXException se) {
log.error("parseDocument - exception", se);
} catch (IOException ie) {
log.error("parseDocument - exception", ie);
} finally {
if (xmlSource != null) {
try {
xmlSource.close();
} catch (IOException e) {
// ignored
}
}
try {
jasperreportDtd.close();
} catch (IOException e) {
// ignored
}
log.info(
"parseDocument - "
+ reportName
+ " ("
+ (System.currentTimeMillis() - parsingStart)
+ " ms.)");
}
}
public void validate(Source source, Result result) throws SAXException, IOException {
if (result instanceof StreamResult || result == null) {
final StreamSource streamSource = (StreamSource) source;
final StreamResult streamResult = (StreamResult) result;
XMLInputSource input =
new XMLInputSource(streamSource.getPublicId(), streamSource.getSystemId(), null);
input.setByteStream(streamSource.getInputStream());
input.setCharacterStream(streamSource.getReader());
// Gets the parser configuration. We'll create and initialize a new one, if we
// haven't created one before or if the previous one was garbage collected.
boolean newConfig = false;
XMLParserConfiguration config = (XMLParserConfiguration) fConfiguration.get();
if (config == null) {
config = initialize();
newConfig = true;
}
// If settings have changed on the component manager, refresh the error handler and entity
// resolver.
else if (fComponentManager.getFeature(PARSER_SETTINGS)) {
config.setProperty(ENTITY_RESOLVER, fComponentManager.getProperty(ENTITY_RESOLVER));
config.setProperty(ERROR_HANDLER, fComponentManager.getProperty(ERROR_HANDLER));
config.setProperty(SECURITY_MANAGER, fComponentManager.getProperty(SECURITY_MANAGER));
}
// prepare for parse
fComponentManager.reset();
if (streamResult != null) {
if (fSerializerFactory == null) {
fSerializerFactory = SerializerFactory.getSerializerFactory(Method.XML);
}
// there doesn't seem to be a way to reset a serializer, so we need to make
// a new one each time.
Serializer ser;
if (streamResult.getWriter() != null) {
ser = fSerializerFactory.makeSerializer(streamResult.getWriter(), new OutputFormat());
} else if (streamResult.getOutputStream() != null) {
ser =
fSerializerFactory.makeSerializer(streamResult.getOutputStream(), new OutputFormat());
} else if (streamResult.getSystemId() != null) {
String uri = streamResult.getSystemId();
OutputStream out = XMLEntityManager.createOutputStream(uri);
ser = fSerializerFactory.makeSerializer(out, new OutputFormat());
} else {
throw new IllegalArgumentException(
JAXPValidationMessageFormatter.formatMessage(
fComponentManager.getLocale(), "StreamResultNotInitialized", null));
}
// we're using the parser only as an XNI-to-SAX converter,
// so that we can use the SAX-based serializer
SAXParser parser = (SAXParser) fParser.get();
if (newConfig || parser == null) {
parser = new SAXParser(config);
fParser = new SoftReference(parser);
} else {
parser.reset();
}
config.setDocumentHandler(fSchemaValidator);
fSchemaValidator.setDocumentHandler(parser);
parser.setContentHandler(ser.asContentHandler());
} else {
fSchemaValidator.setDocumentHandler(null);
}
try {
config.parse(input);
} catch (XMLParseException e) {
throw Util.toSAXParseException(e);
} catch (XNIException e) {
throw Util.toSAXException(e);
} finally {
// release the references to the SAXParser and Serializer
fSchemaValidator.setDocumentHandler(null);
}
return;
}
throw new IllegalArgumentException(
JAXPValidationMessageFormatter.formatMessage(
fComponentManager.getLocale(),
"SourceResultMismatch",
new Object[] {source.getClass().getName(), result.getClass().getName()}));
}
