The question was arisen from following example
(put this text into test.xml):
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE book [
<!ELEMENT book (article)+ >
<!ELEMENT article (title,(para|para1|para2)+)>
<!ELEMENT title (#PCDATA) >
<!ELEMENT para (#PCDATA)>
<!ELEMENT para1 (#PCDATA)>
<!ELEMENT para2 (#PCDATA)>
]>
<book>
<article>
<title>Title</title>
<para>para</para>
</article>
</book>
(put this in TestGrammar.java)
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import java.util.StringTokenizer;
import org.apache.xerces.util.SymbolTable;
import org.apache.xerces.impl.dtd.DTDGrammar;
import org.apache.xerces.util.XMLGrammarPoolImpl;
import org.apache.xerces.xni.grammars.XMLGrammarDescription;
import org.apache.xerces.parsers.XMLGrammarCachingConfiguration;
import org.apache.xerces.xni.QName;
import org.apache.xerces.impl.dtd.XMLElementDecl;
public class TestGrammar
extends org.apache.xerces.parsers.DOMASBuilderImpl{
public TestGrammar(SymbolTable symbolTable,
org.apache.xerces.xni.grammars.XMLGrammarPool grammarPool) {
super(symbolTable,grammarPool) ;
}
public TestGrammar(XMLGrammarCachingConfiguration config){
super(config);
}
public static void main (String[] args) {
String systemId;
String featureId ;
boolean state ;
StringBuffer errorMsg = new StringBuffer();
String NAMESPACES_FEATURE_ID =
"http://xml.org/sax/features/namespaces";;
String VALIDATION_FEATURE_ID =
"http://xml.org/sax/features/validation";;
String SCHEMA_VALIDATION_FEATURE_ID =
"http://apache.org/xml/features/validation/schema";;
String SCHEMA_FULL_CHECKING_FEATURE_ID =
"http://apache.org/xml/features/validation/schema-full-checking";;
/** Default Schema full checking support (false). */
try {
SymbolTable symbolTable = new SymbolTable();
XMLGrammarPoolImpl grammarPool = new XMLGrammarPoolImpl();
XMLGrammarCachingConfiguration parserConfiguration =
new XMLGrammarCachingConfiguration(symbolTable,
grammarPool);
parserConfiguration.setFeature(NAMESPACES_FEATURE_ID, true);
parserConfiguration.setFeature(VALIDATION_FEATURE_ID, true);
parserConfiguration.setFeature(SCHEMA_VALIDATION_FEATURE_ID,
true);
parserConfiguration.setFeature(SCHEMA_FULL_CHECKING_FEATURE_ID, false);
TestGrammar test =
new TestGrammar(parserConfiguration);
featureId = "http://xml.org/sax/features/validation";;
state = true;
test.setFeature(featureId,state);
featureId =
"http://apache.org/xml/features/dom/defer-node-expansion";;
state = false;
test.setFeature(featureId,state);
systemId = "test.xml";
test.parseURI(systemId);
if (
grammarPool.retrieveInitialGrammarSet(XMLGrammarDescription.XML_DTD).length >0
) {
DTDGrammar gdtd =
(DTDGrammar)(grammarPool.retrieveInitialGrammarSet(XMLGrammarDescription.XML_DTD))[0];
String element = "article";
int index = gdtd.getElementDeclIndex(element);
System.out.println(element+" index="+ index );
String content = gdtd.getContentSpecAsString(index);
System.out.println( "content="+content );
XMLElementDecl xmlElement = new XMLElementDecl();
if (gdtd.getElementDecl(index,xmlElement)){
System.out.println(
"xmlElement.name="+xmlElement.name);
System.out.println(
"xmlElement.contentModelValidator="+xmlElement.contentModelValidator );
}
QName title = new QName(null,"title","title",null);
QName para1 = new QName(null,"para","para",null);
QName para2 = new QName(null,"para","para",null);
StringTokenizer _st ;
_st = new StringTokenizer(content,"
(?)|,*+\t\n\r\f",false);
QName[] children = {title,para1,para2};
int out=0;
String token;
System.out.println("Element before para:");
while (_st.hasMoreTokens()) {
token = _st.nextToken().trim();
children[1].setValues(null,token,token,null);
out =
xmlElement.contentModelValidator.validate(children,0,children.length);
if (out<0) {
System.out.println("==>"+token );
}
} // end of while
System.out.println();
title = new QName(null,"title","title",null);
para1 = new QName(null,"para","para",null);
para2 = new QName(null,"para","para",null);
_st = new StringTokenizer(content,"
(?)|,*+\t\n\r\f",false);
children[0]=title;
children[1]=para1;
children[2]=para2;
gdtd.getElementDecl(index,xmlElement);
System.out.println("Element after para:");
while (_st.hasMoreTokens()) {
token = _st.nextToken().trim();
children[2].setValues(null,token,token,null);
out =
xmlElement.contentModelValidator.validate(children,0,children.length);
if (out<0) {
System.out.println("==>"+token );
}
} // end of while
System.out.println();
}else {
errorMsg.append("no grammar"+"\n");
} // end of if (1>0)else
}catch (java.lang.Exception exc) {
errorMsg.append(exc.getLocalizedMessage()+"\n");
} // end of catch
if (errorMsg.length()>0) {
System.out.println("Error:"+ errorMsg.toString());
} else {
System.out.println("Done");
} // end of else
} // end of main ()
}//TestGrammar
The ouput is
article index=1
content=(title,(para|para1|para2)+)
xmlElement.name=localpart="article",rawname="article"
[EMAIL PROTECTED]
Element before para:
Element after para:
Done
ie, no elements, while i expected para, para1 and para2.
Do i make some mistakes ?
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