org.exolab.castor.xml.dtd
Class Converter

java.lang.Object
  org.exolab.castor.xml.dtd.Converter

public class Converter
extends Object

Class containing methods to parse and convert XML DTD documents to corresponding XML Schema documents. Also contains simple command line interface to read an XML DTD file and create corresponding XML Schema object.

Version:

$Revision: 8519 $ $Date: 2006-04-14 04:14:43 -0600 (Fri, 14 Apr 2006) $

Author:

Alexander Totok

Field Summary

static String	DEFAULT_NAME_SPACE
static String	DEFAULT_NAME_SPACE_PREFIX
static String	NAME_SPACE_KEY
static String	NAME_SPACE_PREFIX_KEY

Constructor Summary

Converter()

Method Summary

AttributeDecl	convertAttribute(Attribute dtdAttribute, Schema schema) Convert DTD Attribute declaration to Schema Attribute Declaration.
Particle	convertContentParticle(ContentParticle dtdContent, Schema schema) Method to convert ContentParticle object, used to implement element content in the DTD object model, to the corresponding object in the Schema object model: either Group or ElementDecl.
ElementDecl	convertDTDElementToSchemaElement(Element dtdElement, Schema schema) Convert DTD Element declaration to Schema Element Declaration.
Schema	convertDTDObjectToSchemaObject(DTDdocument dtd, String targetNamespace, Map nameSpaceMap) Convert DTD document object to corresponding Schema object.
void	convertDTDtoSchema(Reader reader, Writer writer) Convert DTD document to corresponding XML Schema document.
void	convertDTDtoSchema(Reader reader, Writer writer, String targetNameSpace, Map<String,String> nameSpaceMap) Convert DTD document to corresponding XML Schema document.
protected static boolean	isNameSpacePrefix(String nameSpacePrefix2test)
static void	main(String[] args) Simple command line interface to read an XML DTD file and create corresponding XML Schema file.
void	marshalSchema(Schema schema, Writer writer) Marshals XML Schema to output char stream.
DTDdocument	parseDTD(Reader reader) Parses text of a DTD document and returns corresponding DTD document object.
protected static Map<String,String>	parseNamespace(String nameSpaceArg)
void	process(Reader in, Writer out, String encoding, String targetNamespace, Map<String,String> namespaces)
void	process(String dtdFile, String schemaFile, String encoding, String targetNamespace, Map<String,String> namespaces)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

NAME_SPACE_PREFIX_KEY

public static final String NAME_SPACE_PREFIX_KEY

See Also:

Constant Field Values

NAME_SPACE_KEY

public static final String NAME_SPACE_KEY

See Also:

Constant Field Values

DEFAULT_NAME_SPACE_PREFIX

public static final String DEFAULT_NAME_SPACE_PREFIX

See Also:

Constant Field Values

DEFAULT_NAME_SPACE

public static final String DEFAULT_NAME_SPACE

See Also:

Constant Field Values

Constructor Detail

Converter

public Converter()

Method Detail

main

public static void main(String[] args)
                 throws IOException,
                        DTDException,
                        SchemaException,
                        SAXException

Simple command line interface to read an XML DTD file and create corresponding XML Schema file. Usage:

 java org.exolab.castor.xml.dtd.Converter  dtd_file xsd_file [character_encoding]
    [-tns=[TNS_PREFIX:]NAMESPACE_URI]
    [-xmlns=[TNS_PREFIX:]NAMESPACE_URI]*
 
 dtd_file: name of the input DTD file
 xsd_file: name of the output Schema file
 character_encoding: name of the character encoding,
            if not specified, ASCII is chosen
 

Help message is provided.

Throws:

DTDException - if the input DTD document is malformed.

SchemaException - if Schema object can not be created.

SAXException - if an error occured during marshalling of schema object constructed from the DTD document.

IOException

process

public void process(String dtdFile,
                    String schemaFile,
                    String encoding,
                    String targetNamespace,
                    Map<String,String> namespaces)
             throws SchemaException,
                    DTDException,
                    IOException,
                    SAXException

Parameters:

dtdFile - Location of the DTD file.

schemaFile - Location of the XML schema file.

encoding - (Optional) encoding.

targetNamespace - (Optional) target name space.

namespaces - (Optional) XML name spaces.

Throws:

SchemaException

DTDException

IOException

SAXException

process

public void process(Reader in,
                    Writer out,
                    String encoding,
                    String targetNamespace,
                    Map<String,String> namespaces)
             throws SchemaException,
                    DTDException,
                    IOException,
                    SAXException

Parameters:

in - Location of the DTD file.

out - Location of the XML schema file.

encoding - (Optional) encoding.

targetNamespace - (Optional) target name space.

namespaces - (Optional) XML name spaces.

Throws:

SchemaException

DTDException

IOException

SAXException

parseNamespace

protected static Map<String,String> parseNamespace(String nameSpaceArg)

isNameSpacePrefix

protected static boolean isNameSpacePrefix(String nameSpacePrefix2test)

convertDTDtoSchema

public void convertDTDtoSchema(Reader reader,
                               Writer writer,
                               String targetNameSpace,
                               Map<String,String> nameSpaceMap)
                        throws DTDException,
                               SchemaException,
                               IOException,
                               SAXException

Convert DTD document to corresponding XML Schema document.

Parameters:

reader - reader of the input DTD document.

writer - writer to the output Schema document.

targetNameSpaceMap - (Optional) XML target name space for the XML schema.

nameSpaceMap - (Optional) XML name space declarations for the XML schema.

Throws:

DTDException - if the DTD document is syntactically or semantically not correct.

SchemaException - if Schema object can not be created.

IOException - if there is an I/O problem with the reader or writer.

SAXException - if an error occured during schema object marshalling.

convertDTDtoSchema

public void convertDTDtoSchema(Reader reader,
                               Writer writer)
                        throws DTDException,
                               SchemaException,
                               IOException,
                               SAXException

Convert DTD document to corresponding XML Schema document.

Parameters:

reader - reader of the input DTD document.

writer - writer to the output Schema document.

Throws:

DTDException - if the DTD document is syntactically or semanticly not correct.

SchemaException - if Schema object can not be created.

IOException - if there is an I/O problem with the reader or writer.

SAXException - if an error occured during schema object marshalling.

parseDTD

public DTDdocument parseDTD(Reader reader)
                     throws DTDException

Parses text of a DTD document and returns corresponding DTD document object. It is left to constructor of the reader to set up character encoding correctly. This means that method read of the reader is used to get next character, assuming it returns appropriate values.

Parameters:

reader - input char stream reader. It is recommended to use class java.io.InputStreamReader as a reader, which allows to set desired character encoding.

Returns:

DTD document object corresponding to the input text of a DTD document.

Throws:

DTDException - if the DTD document is syntactically or semanticly not correct.

convertDTDObjectToSchemaObject

public Schema convertDTDObjectToSchemaObject(DTDdocument dtd,
                                             String targetNamespace,
                                             Map nameSpaceMap)
                                      throws DTDException,
                                             SchemaException

Convert DTD document object to corresponding Schema object.

Parameters:

dtd - input XML DTD document object.

nameSpacePrefix -

nameSpace -

Returns:

corresponding XML Schema object.

Throws:

DTDException - if the input DTD document is malformed.

SchemaException - if Schema object can not be created.

convertDTDElementToSchemaElement

public ElementDecl convertDTDElementToSchemaElement(Element dtdElement,
                                                    Schema schema)
                                             throws DTDException,
                                                    SchemaException

Convert DTD Element declaration to Schema Element Declaration.

Parameters:

dtdElement - DTD Element declaration.

schema - Schema owning Element declaration.

Returns:

corresponding Schema Element declaration.

Throws:

DTDException - if the input DTD Element Declaration is malformed.

SchemaException - if unable to construct return ElementDecl object from the input DTD Element object.

convertContentParticle

public Particle convertContentParticle(ContentParticle dtdContent,
                                       Schema schema)
                                throws DTDException,
                                       SchemaException

Method to convert ContentParticle object, used to implement element content in the DTD object model, to the corresponding object in the Schema object model: either Group or ElementDecl.

Parameters:

dtdContent - input ContentParticle object.

Returns:

object returned is an instance of either Group class or ElementDecl class.

Throws:

DTDException - if the input ContentParticle is malformed.

SchemaException - if unable to construct return content object from a given ContentParticle

convertAttribute

public AttributeDecl convertAttribute(Attribute dtdAttribute,
                                      Schema schema)
                               throws DTDException

Convert DTD Attribute declaration to Schema Attribute Declaration.

Parameters:

dtdAttribute - DTD Attribute declaration.

schema - Schema owning Element of this Attribute.

Returns:

corresponding Schema Attribute declaration.

Throws:

DTDException - if the input DTD Attribute Declaration is malformed.

marshalSchema

public void marshalSchema(Schema schema,
                          Writer writer)
                   throws IOException,
                          SAXException

Marshals XML Schema to output char stream.

Parameters:

schema - XML Schema object to marshal.

writer - output char stream to marshal Schema to.

Throws:

IOException - if there is an I/O problem with the writer.

SAXException - if an error occured during schema marshalling.