Mega Code Archive
Provides a trace of the schema type information for elements and attributes in an XML document
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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.
*/
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.util.Vector;
import javax.xml.XMLConstants;
import javax.xml.transform.stream.StreamSource;
import javax.xml.validation.Schema;
import javax.xml.validation.SchemaFactory;
import javax.xml.validation.TypeInfoProvider;
import javax.xml.validation.ValidatorHandler;
import org.w3c.dom.TypeInfo;
import org.xml.sax.Attributes;
import org.xml.sax.DTDHandler;
import org.xml.sax.Locator;
import org.xml.sax.Parser;
import org.xml.sax.SAXException;
import org.xml.sax.SAXNotRecognizedException;
import org.xml.sax.SAXNotSupportedException;
import org.xml.sax.SAXParseException;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.helpers.ParserAdapter;
import org.xml.sax.helpers.ParserFactory;
import org.xml.sax.helpers.XMLReaderFactory;
/**
* <p>
* Provides a trace of the schema type information for elements and attributes
* in an XML document. This demonstrates usage of the JAXP 1.3 Validation API,
* particuarly how to read type information from a TypeInfoProvider.
* </p>
*
* @author Michael Glavassevich, IBM
*
* @version $Id: TypeInfoWriter.java 447685 2006-09-19 02:37:49Z mrglavas $
*/
public class TypeInfoWriter extends DefaultHandler {
//
// Constants
//
// feature ids
/**
* Schema full checking feature id
* (http://apache.org/xml/features/validation/schema-full-checking).
*/
protected static final String SCHEMA_FULL_CHECKING_FEATURE_ID = "http://apache.org/xml/features/validation/schema-full-checking";
/**
* Honour all schema locations feature id
* (http://apache.org/xml/features/honour-all-schemaLocations).
*/
protected static final String HONOUR_ALL_SCHEMA_LOCATIONS_ID = "http://apache.org/xml/features/honour-all-schemaLocations";
/**
* Validate schema annotations feature id
* (http://apache.org/xml/features/validate-annotations)
*/
protected static final String VALIDATE_ANNOTATIONS_ID = "http://apache.org/xml/features/validate-annotations";
/**
* Generate synthetic schema annotations feature id
* (http://apache.org/xml/features/generate-synthetic-annotations).
*/
protected static final String GENERATE_SYNTHETIC_ANNOTATIONS_ID = "http://apache.org/xml/features/generate-synthetic-annotations";
// default settings
/** Default schema language (http://www.w3.org/2001/XMLSchema). */
protected static final String DEFAULT_SCHEMA_LANGUAGE = XMLConstants.W3C_XML_SCHEMA_NS_URI;
/** Default parser name (org.apache.xerces.parsers.SAXParser). */
protected static final String DEFAULT_PARSER_NAME = "org.apache.xerces.parsers.SAXParser";
/** Default schema full checking support (false). */
protected static final boolean DEFAULT_SCHEMA_FULL_CHECKING = false;
/** Default honour all schema locations (false). */
protected static final boolean DEFAULT_HONOUR_ALL_SCHEMA_LOCATIONS = false;
/** Default validate schema annotations (false). */
protected static final boolean DEFAULT_VALIDATE_ANNOTATIONS = false;
/** Default generate synthetic schema annotations (false). */
protected static final boolean DEFAULT_GENERATE_SYNTHETIC_ANNOTATIONS = false;
//
// Data
//
/** TypeInfo provider. */
protected TypeInfoProvider fTypeInfoProvider;
/** Print writer. */
protected PrintWriter fOut;
/** Indent level. */
protected int fIndent;
//
// Constructors
//
/** Default constructor. */
public TypeInfoWriter() {
}
//
// ContentHandler and DocumentHandler methods
//
/** Set document locator. */
public void setDocumentLocator(Locator locator) {
fIndent = 0;
printIndent();
fOut.print("setDocumentLocator(");
fOut.print("systemId=");
printQuotedString(locator.getSystemId());
fOut.print(", publicId=");
printQuotedString(locator.getPublicId());
fOut.println(')');
fOut.flush();
} // setDocumentLocator(Locator)
/** Start document. */
public void startDocument() throws SAXException {
fIndent = 0;
printIndent();
fOut.println("startDocument()");
fOut.flush();
fIndent++;
} // startDocument()
/** Start element. */
public void startElement(String uri, String localName, String qname, Attributes attributes)
throws SAXException {
TypeInfo type;
printIndent();
fOut.print("startElement(");
fOut.print("name=");
printQName(uri, localName);
fOut.print(',');
fOut.print("type=");
if (fTypeInfoProvider != null && (type = fTypeInfoProvider.getElementTypeInfo()) != null) {
printQName(type.getTypeNamespace(), type.getTypeName());
} else {
fOut.print("null");
}
fOut.print(',');
fOut.print("attributes=");
if (attributes == null) {
fOut.println("null");
} else {
fOut.print('{');
int length = attributes.getLength();
for (int i = 0; i < length; i++) {
if (i > 0) {
fOut.print(',');
}
String attrURI = attributes.getURI(i);
String attrLocalName = attributes.getLocalName(i);
fOut.print('{');
fOut.print("name=");
printQName(attrURI, attrLocalName);
fOut.print(',');
fOut.print("type=");
if (fTypeInfoProvider != null && (type = fTypeInfoProvider.getAttributeTypeInfo(i)) != null) {
printQName(type.getTypeNamespace(), type.getTypeName());
} else {
fOut.print("null");
}
fOut.print(',');
fOut.print("id=");
fOut.print(fTypeInfoProvider != null && fTypeInfoProvider.isIdAttribute(i) ? "\"true\""
: "\"false\"");
fOut.print(',');
fOut.print("specified=");
fOut.print(fTypeInfoProvider == null || fTypeInfoProvider.isSpecified(i) ? "\"true\""
: "\"false\"");
fOut.print('}');
}
fOut.print('}');
}
fOut.println(')');
fOut.flush();
fIndent++;
} // startElement(String,String,String,Attributes)
/** End element. */
public void endElement(String uri, String localName, String qname) throws SAXException {
fIndent--;
printIndent();
fOut.print("endElement(");
fOut.print("name=");
printQName(uri, localName);
fOut.println(')');
fOut.flush();
} // endElement(String,String,String)
/** End document. */
public void endDocument() throws SAXException {
fIndent--;
printIndent();
fOut.println("endDocument()");
fOut.flush();
} // endDocument()
//
// ErrorHandler methods
//
/** Warning. */
public void warning(SAXParseException ex) throws SAXException {
printError("Warning", ex);
} // warning(SAXParseException)
/** Error. */
public void error(SAXParseException ex) throws SAXException {
printError("Error", ex);
} // error(SAXParseException)
/** Fatal error. */
public void fatalError(SAXParseException ex) throws SAXException {
printError("Fatal Error", ex);
throw ex;
} // fatalError(SAXParseException)
//
// Public methods
//
/** Sets the output stream for printing. */
public void setOutput(OutputStream stream, String encoding) throws UnsupportedEncodingException {
if (encoding == null) {
encoding = "UTF8";
}
java.io.Writer writer = new OutputStreamWriter(stream, encoding);
fOut = new PrintWriter(writer);
} // setOutput(OutputStream,String)
//
// Protected methods
//
/** Sets the TypeInfoProvider used by this writer. */
protected void setTypeInfoProvider(TypeInfoProvider provider) {
fTypeInfoProvider = provider;
}
/** Prints the error message. */
protected void printError(String type, SAXParseException ex) {
System.err.print("[");
System.err.print(type);
System.err.print("] ");
String systemId = ex.getSystemId();
if (systemId != null) {
int index = systemId.lastIndexOf('/');
if (index != -1)
systemId = systemId.substring(index + 1);
System.err.print(systemId);
}
System.err.print(':');
System.err.print(ex.getLineNumber());
System.err.print(':');
System.err.print(ex.getColumnNumber());
System.err.print(": ");
System.err.print(ex.getMessage());
System.err.println();
System.err.flush();
} // printError(String,SAXParseException)
/** Prints the indent. */
protected void printIndent() {
for (int i = 0; i < fIndent; i++) {
fOut.print(' ');
}
} // printIndent()
protected void printQName(String uri, String localName) {
if (uri != null && uri.length() > 0) {
printQuotedString('{' + uri + "}" + localName);
return;
}
printQuotedString(localName);
}
/** Print quoted string. */
protected void printQuotedString(String s) {
if (s == null) {
fOut.print("null");
return;
}
fOut.print('"');
fOut.print(s);
fOut.print('"');
} // printQuotedString(String)
//
// MAIN
//
/** Main program entry point. */
public static void main(String[] argv) {
// is there anything to do?
if (argv.length == 0) {
printUsage();
System.exit(1);
}
// variables
XMLReader parser = null;
Vector schemas = null;
Vector instances = null;
String schemaLanguage = DEFAULT_SCHEMA_LANGUAGE;
boolean schemaFullChecking = DEFAULT_SCHEMA_FULL_CHECKING;
boolean honourAllSchemaLocations = DEFAULT_HONOUR_ALL_SCHEMA_LOCATIONS;
boolean validateAnnotations = DEFAULT_VALIDATE_ANNOTATIONS;
boolean generateSyntheticAnnotations = DEFAULT_GENERATE_SYNTHETIC_ANNOTATIONS;
// process arguments
for (int i = 0; i < argv.length; ++i) {
String arg = argv[i];
if (arg.startsWith("-")) {
String option = arg.substring(1);
if (option.equals("l")) {
// get schema language name
if (++i == argv.length) {
System.err.println("error: Missing argument to -l option.");
} else {
schemaLanguage = argv[i];
}
continue;
}
if (option.equals("p")) {
// get parser name
if (++i == argv.length) {
System.err.println("error: Missing argument to -p option.");
continue;
}
String parserName = argv[i];
// create parser
try {
parser = XMLReaderFactory.createXMLReader(parserName);
} catch (Exception e) {
try {
Parser sax1Parser = ParserFactory.makeParser(parserName);
parser = new ParserAdapter(sax1Parser);
System.err.println("warning: Features and properties not supported on SAX1 parsers.");
} catch (Exception ex) {
parser = null;
System.err.println("error: Unable to instantiate parser (" + parserName + ")");
e.printStackTrace(System.err);
System.exit(1);
}
}
continue;
}
if (arg.equals("-a")) {
// process -a: schema documents
if (schemas == null) {
schemas = new Vector();
}
while (i + 1 < argv.length && !(arg = argv[i + 1]).startsWith("-")) {
schemas.add(arg);
++i;
}
continue;
}
if (arg.equals("-i")) {
// process -i: instance documents
if (instances == null) {
instances = new Vector();
}
while (i + 1 < argv.length && !(arg = argv[i + 1]).startsWith("-")) {
instances.add(arg);
++i;
}
continue;
}
if (option.equalsIgnoreCase("f")) {
schemaFullChecking = option.equals("f");
continue;
}
if (option.equalsIgnoreCase("hs")) {
honourAllSchemaLocations = option.equals("hs");
continue;
}
if (option.equalsIgnoreCase("va")) {
validateAnnotations = option.equals("va");
continue;
}
if (option.equalsIgnoreCase("ga")) {
generateSyntheticAnnotations = option.equals("ga");
continue;
}
if (option.equals("h")) {
printUsage();
continue;
}
System.err.println("error: unknown option (" + option + ").");
continue;
}
}
// use default parser?
if (parser == null) {
// create parser
try {
parser = XMLReaderFactory.createXMLReader(DEFAULT_PARSER_NAME);
} catch (Exception e) {
System.err.println("error: Unable to instantiate parser (" + DEFAULT_PARSER_NAME + ")");
e.printStackTrace(System.err);
System.exit(1);
}
}
try {
// Create writer
TypeInfoWriter writer = new TypeInfoWriter();
writer.setOutput(System.out, "UTF8");
// Create SchemaFactory and configure
SchemaFactory factory = SchemaFactory.newInstance(schemaLanguage);
factory.setErrorHandler(writer);
try {
factory.setFeature(SCHEMA_FULL_CHECKING_FEATURE_ID, schemaFullChecking);
} catch (SAXNotRecognizedException e) {
System.err.println("warning: SchemaFactory does not recognize feature ("
+ SCHEMA_FULL_CHECKING_FEATURE_ID + ")");
} catch (SAXNotSupportedException e) {
System.err.println("warning: SchemaFactory does not support feature ("
+ SCHEMA_FULL_CHECKING_FEATURE_ID + ")");
}
try {
factory.setFeature(HONOUR_ALL_SCHEMA_LOCATIONS_ID, honourAllSchemaLocations);
} catch (SAXNotRecognizedException e) {
System.err.println("warning: SchemaFactory does not recognize feature ("
+ HONOUR_ALL_SCHEMA_LOCATIONS_ID + ")");
} catch (SAXNotSupportedException e) {
System.err.println("warning: SchemaFactory does not support feature ("
+ HONOUR_ALL_SCHEMA_LOCATIONS_ID + ")");
}
try {
factory.setFeature(VALIDATE_ANNOTATIONS_ID, validateAnnotations);
} catch (SAXNotRecognizedException e) {
System.err.println("warning: SchemaFactory does not recognize feature ("
+ VALIDATE_ANNOTATIONS_ID + ")");
} catch (SAXNotSupportedException e) {
System.err.println("warning: SchemaFactory does not support feature ("
+ VALIDATE_ANNOTATIONS_ID + ")");
}
try {
factory.setFeature(GENERATE_SYNTHETIC_ANNOTATIONS_ID, generateSyntheticAnnotations);
} catch (SAXNotRecognizedException e) {
System.err.println("warning: SchemaFactory does not recognize feature ("
+ GENERATE_SYNTHETIC_ANNOTATIONS_ID + ")");
} catch (SAXNotSupportedException e) {
System.err.println("warning: SchemaFactory does not support feature ("
+ GENERATE_SYNTHETIC_ANNOTATIONS_ID + ")");
}
// Build Schema from sources
Schema schema;
if (schemas != null && schemas.size() > 0) {
final int length = schemas.size();
StreamSource[] sources = new StreamSource[length];
for (int j = 0; j < length; ++j) {
sources[j] = new StreamSource((String) schemas.elementAt(j));
}
schema = factory.newSchema(sources);
} else {
schema = factory.newSchema();
}
// Setup validator and parser
ValidatorHandler validator = schema.newValidatorHandler();
parser.setContentHandler(validator);
if (validator instanceof DTDHandler) {
parser.setDTDHandler((DTDHandler) validator);
}
parser.setErrorHandler(writer);
validator.setContentHandler(writer);
validator.setErrorHandler(writer);
writer.setTypeInfoProvider(validator.getTypeInfoProvider());
try {
validator.setFeature(SCHEMA_FULL_CHECKING_FEATURE_ID, schemaFullChecking);
} catch (SAXNotRecognizedException e) {
System.err.println("warning: Validator does not recognize feature ("
+ SCHEMA_FULL_CHECKING_FEATURE_ID + ")");
} catch (SAXNotSupportedException e) {
System.err.println("warning: Validator does not support feature ("
+ SCHEMA_FULL_CHECKING_FEATURE_ID + ")");
}
try {
validator.setFeature(HONOUR_ALL_SCHEMA_LOCATIONS_ID, honourAllSchemaLocations);
} catch (SAXNotRecognizedException e) {
System.err.println("warning: Validator does not recognize feature ("
+ HONOUR_ALL_SCHEMA_LOCATIONS_ID + ")");
} catch (SAXNotSupportedException e) {
System.err.println("warning: Validator does not support feature ("
+ HONOUR_ALL_SCHEMA_LOCATIONS_ID + ")");
}
try {
validator.setFeature(VALIDATE_ANNOTATIONS_ID, validateAnnotations);
} catch (SAXNotRecognizedException e) {
System.err.println("warning: Validator does not recognize feature ("
+ VALIDATE_ANNOTATIONS_ID + ")");
} catch (SAXNotSupportedException e) {
System.err.println("warning: Validator does not support feature ("
+ VALIDATE_ANNOTATIONS_ID + ")");
}
try {
validator.setFeature(GENERATE_SYNTHETIC_ANNOTATIONS_ID, generateSyntheticAnnotations);
} catch (SAXNotRecognizedException e) {
System.err.println("warning: Validator does not recognize feature ("
+ GENERATE_SYNTHETIC_ANNOTATIONS_ID + ")");
} catch (SAXNotSupportedException e) {
System.err.println("warning: Validator does not support feature ("
+ GENERATE_SYNTHETIC_ANNOTATIONS_ID + ")");
}
// Validate instance documents and print type information
if (instances != null && instances.size() > 0) {
final int length = instances.size();
for (int j = 0; j < length; ++j) {
parser.parse((String) instances.elementAt(j));
}
}
} catch (SAXParseException e) {
// ignore
} catch (Exception e) {
System.err.println("error: Parse error occurred - " + e.getMessage());
if (e instanceof SAXException) {
Exception nested = ((SAXException) e).getException();
if (nested != null) {
e = nested;
}
}
e.printStackTrace(System.err);
}
} // main(String[])
//
// Private static methods
//
/** Prints the usage. */
private static void printUsage() {
System.err.println("usage: java jaxp.TypeInfoWriter (options) ...");
System.err.println();
System.err.println("options:");
System.err.println(" -l name Select schema language by name.");
System.err.println(" -p name Select parser by name.");
System.err.println(" -a uri ... Provide a list of schema documents");
System.err.println(" -i uri ... Provide a list of instance documents to validate");
System.err.println(" -f | -F Turn on/off Schema full checking.");
System.err.println(" NOTE: Not supported by all schema factories and validators.");
System.err.println(" -hs | -HS Turn on/off honouring of all schema locations.");
System.err.println(" NOTE: Not supported by all schema factories and validators.");
System.err.println(" -va | -VA Turn on/off validation of schema annotations.");
System.err.println(" NOTE: Not supported by all schema factories and validators.");
System.err.println(" -ga | -GA Turn on/off generation of synthetic schema annotations.");
System.err.println(" NOTE: Not supported by all schema factories and validators.");
System.err.println(" -h This help screen.");
System.err.println();
System.err.println("defaults:");
System.err.println(" Schema language: " + DEFAULT_SCHEMA_LANGUAGE);
System.err.println(" Parser: " + DEFAULT_PARSER_NAME);
System.err.print(" Schema full checking: ");
System.err.println(DEFAULT_SCHEMA_FULL_CHECKING ? "on" : "off");
System.err.print(" Honour all schema locations: ");
System.err.println(DEFAULT_HONOUR_ALL_SCHEMA_LOCATIONS ? "on" : "off");
System.err.print(" Validate annotations: ");
System.err.println(DEFAULT_VALIDATE_ANNOTATIONS ? "on" : "off");
System.err.print(" Generate synthetic annotations: ");
System.err.println(DEFAULT_GENERATE_SYNTHETIC_ANNOTATIONS ? "on" : "off");
} // printUsage()
} // class TypeInfoWriter
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