com.sun.msv.reader.trex.NameClassAndExpressionState Maven / Gradle / Ivy
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package com.sun.msv.reader.trex;
import com.sun.msv.grammar.NameClass;
import com.sun.msv.grammar.SimpleNameClass;
import com.sun.msv.reader.SequenceState;
import com.sun.msv.reader.State;
import com.sun.msv.util.StartTagInfo;
/**
* Base implementation for ElementState and AttributeState
*
* This class collects one name class and patterns
*
* @author Kohsuke KAWAGUCHI
*/
public abstract class NameClassAndExpressionState extends SequenceState implements NameClassOwner {
protected NameClass nameClass = null;
/**
* gets namespace URI to which this declaration belongs
*/
protected String getNamespace() {
// usually, propagated "ns" attribute should be used
return ((TREXBaseReader) reader).targetNamespace;
}
protected void startSelf() {
super.startSelf();
// if name attribtue is specified, use it.
final String name = startTag.getCollapsedAttribute("name");
if (name == null)
return;
final int idx = name.indexOf(':');
if (idx != -1) {
// QName is specified. resolve this prefix.
final String[] s = reader.splitQName(name);
if (s == null) {
reader.reportError(TREXBaseReader.ERR_UNDECLARED_PREFIX, name);
// recover by using a dummy name
nameClass = new SimpleNameClass("", name);
} else
nameClass = new SimpleNameClass(s[0], s[1]);
} else
nameClass = new SimpleNameClass(getNamespace(), name);
}
public void onEndChild(NameClass p) {
if (nameClass != null) // name class has already specified
reader.reportError(TREXBaseReader.ERR_MORE_THAN_ONE_NAMECLASS);
nameClass = p;
}
protected State createChildState(StartTagInfo tag) {
if (nameClass == null) // nameClass should be specified before content model.
{
State nextState = ((TREXBaseReader) reader).createNameClassChildState(this, tag);
if (nextState != null)
return nextState;
// to provide better error message, analyze the situation further.
// users tend to forget to supply nameClass and name attribute.
nextState = reader.createExpressionChildState(this, tag);
if (nextState != null) {
// OK. tag is recognized as an content model.
// so probably this user forgot to specify name class.
// report so and recover by assuming some NameClass
reader.reportError(TREXBaseReader.ERR_MISSING_CHILD_NAMECLASS);
nameClass = NameClass.ALL;
return nextState;
} else
// probably this user made a typo. let the default handler reports an error
return null;
} else
return reader.createExpressionChildState(this, tag);
}
protected void endSelf() {
if (nameClass == null) {
// name class is missing
reader.reportError(TREXBaseReader.ERR_MISSING_CHILD_NAMECLASS);
nameClass = NameClass.ALL;
}
super.endSelf();
}
}