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package com.sun.xml.bind.validator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Map;
import javax.xml.bind.ValidationEvent;
import javax.xml.bind.ValidationEventHandler;
import javax.xml.bind.helpers.NotIdentifiableEventImpl;
import javax.xml.bind.helpers.ValidationEventImpl;
import javax.xml.bind.helpers.ValidationEventLocatorImpl;
import org.xml.sax.SAXException;
import com.sun.xml.bind.serializer.*;
import com.sun.xml.bind.serializer.NamespaceContextImpl;
import com.sun.xml.bind.serializer.XMLSerializable;
/**
* Maintains information that needs to be stored across
* validations of multiple objects.
*
* Specifically, this object is responsible for:
*
*
*
detecting a cycle in a content tree by keeping track of
* objects that were validated.
*
*
keeping an instance of NamespaceContextImpl, which is
* shared by all MSVValidators.
*
*
keeping a reference to {@link ValidationErrorHandler}.
* MSVValidators should use this error handler to report any error.
*
* @since JAXB1.0
* @deprecated in JAXB1.0.1
*/
class ValidationContext
{
/**
* @param validateID
* if true, ID/IDREF validation will be performed.
*/
ValidationContext( ValidationEventHandler _eventHandler, boolean validateID ) {
this.eventHandler = _eventHandler;
this.validateID = validateID;
}
//
//
// detecting cycles.
//
//
/** Set of all validated objects. Used to detect a cycle. */
private final HashSet validatedObjects = new HashSet();
/**
* Validates the sub-tree rooted at vo and reports
* any errors/warnings to the error handler.
*
* @return
* true if there was no error. false otherwise.
*/
public void validate( ValidatableObject vo ) throws SAXException, AbortSerializationException {
if( validatedObjects.add(vo) ) {
// setup a new validator for this object and validate it.
MSVValidator.validate(this,vo);
} else {
// this object has already been validated once.
reportEvent( vo, Messages.format( Messages.CYCLE_DETECTED ) );
}
}
//
//
// Keeping track of namespace bindings.
//
//
/** namespace context. */
private final NamespaceContextImpl nsContext = new NamespaceContextImpl();
public NamespaceContextImpl getNamespaceContext() { return nsContext; }
//
//
// ID/IDREF validation
//
//
/** ID/IDREF validation is done only when this flag is true. */
private final boolean validateID;
private final HashSet IDs = new HashSet();
private final HashMap IDREFs = new HashMap();
public String onID( XMLSerializable owner, String value ) throws SAXException {
if(!validateID) return value;
if(!IDs.add(value)) {
// this ID value has already been used.
reportEvent((ValidatableObject)owner,
Messages.format(Messages.DUPLICATE_ID,value));
}
return value;
}
public String onIDREF( XMLSerializable referer, String value ) throws SAXException {
if(!validateID) return value;
if(IDs.contains(value))
return value; // this IDREF has the corresponding ID.
// remember the value to check the value later.
IDREFs.put(value,referer);
return value;
}
/** Tests if all IDREFs have corresponding IDs. */
protected void reconcileIDs() throws SAXException {
if(!validateID) return;
for (Iterator itr = IDREFs.entrySet().iterator(); itr.hasNext();) {
Map.Entry e = (Map.Entry) itr.next();
if(IDs.contains(e.getKey()))
continue; // OK.
// ID was not found.
ValidatableObject source = (ValidatableObject)e.getValue();
reportEvent(
source,
new NotIdentifiableEventImpl(
ValidationEvent.ERROR,
Messages.format( Messages.ID_NOT_FOUND, e.getKey() ),
new ValidationEventLocatorImpl( source ) ) );
}
IDREFs.clear();
}
//
//
// Keeping track of ValidationErrorHandler
//
//
private final ValidationEventHandler eventHandler;
/**
* Reports an error to the application.
*/
public void reportEvent(ValidatableObject source, String formattedMessage) throws AbortSerializationException {
reportEvent(
source,
new ValidationEventImpl( ValidationEvent.ERROR,
formattedMessage,
new ValidationEventLocatorImpl(source) ) );
}
/**
* Reports an error to the client.
* This version should be used when an exception is thrown from sub-modules.
*/
public void reportEvent(ValidatableObject source, Exception nestedException ) throws AbortSerializationException {
reportEvent(
source,
new ValidationEventImpl( ValidationEvent.ERROR,
nestedException.toString(),
new ValidationEventLocatorImpl(source),
nestedException ) );
}
public void reportEvent( ValidatableObject source, ValidationEvent event ) throws AbortSerializationException {
boolean r;
try {
r = eventHandler.handleEvent( event );
} catch( RuntimeException re ) {
// if the client event handler causes a RuntimeException, then
// we have to return false.
r = false;
}
if(!r) {
// throw an exception to abort validation
throw new AbortSerializationException( event.getMessage() );
}
}
}
