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package com.sun.org.apache.xerces.internal.impl.xs.models;
import com.sun.org.apache.xerces.internal.impl.XMLErrorReporter;
import com.sun.org.apache.xerces.internal.xni.parser.XMLComponentManager;
import com.sun.org.apache.xerces.internal.util.SecurityManager ;
import com.sun.org.apache.xerces.internal.impl.dtd.models.CMNode;
import com.sun.org.apache.xerces.internal.xni.parser.XMLConfigurationException;
import com.sun.org.apache.xerces.internal.impl.xs.XSMessageFormatter;
import com.sun.org.apache.xerces.internal.impl.Constants;
/**
*
* @xerces.internal
*
* @author Neeraj Bajaj
*
* @version $Id: CMNodeFactory.java,v 1.7 2010-11-01 04:39:58 joehw Exp $
*/
public class CMNodeFactory {
/** Property identifier: error reporter. */
private static final String ERROR_REPORTER =
Constants.XERCES_PROPERTY_PREFIX + Constants.ERROR_REPORTER_PROPERTY;
/** property identifier: security manager. */
private static final String SECURITY_MANAGER =
Constants.XERCES_PROPERTY_PREFIX + Constants.SECURITY_MANAGER_PROPERTY;
private static final boolean DEBUG = false ;
//
private static final int MULTIPLICITY = 1 ;
//count of number of nodes created
private int nodeCount = 0;
//No. of nodes allowed.
private int maxNodeLimit ;
/**
* Error reporter. This property identifier is:
* http://apache.org/xml/properties/internal/error-reporter
*/
private XMLErrorReporter fErrorReporter;
// stores defaults for different security holes (maxOccurLimit in current context) if it has
// been set on the configuration.
private SecurityManager fSecurityManager = null;
/** default constructor */
public CMNodeFactory() {
}
public void reset(XMLComponentManager componentManager){
fErrorReporter = (XMLErrorReporter)componentManager.getProperty(ERROR_REPORTER);
try {
fSecurityManager = (SecurityManager)componentManager.getProperty(SECURITY_MANAGER);
//we are setting the limit of number of nodes to 3times the maxOccur value..
if(fSecurityManager != null){
maxNodeLimit = fSecurityManager.getMaxOccurNodeLimit() * MULTIPLICITY ;
}
}
catch (XMLConfigurationException e) {
fSecurityManager = null;
}
}//reset()
public CMNode getCMLeafNode(int type, Object leaf, int id, int position) {
return new XSCMLeaf(type, leaf, id, position) ;
}
public CMNode getCMRepeatingLeafNode(int type, Object leaf,
int minOccurs, int maxOccurs, int id, int position) {
nodeCountCheck();
return new XSCMRepeatingLeaf(type, leaf, minOccurs, maxOccurs, id, position);
}
public CMNode getCMUniOpNode(int type, CMNode childNode) {
nodeCountCheck();
return new XSCMUniOp(type, childNode) ;
}
public CMNode getCMBinOpNode(int type, CMNode leftNode, CMNode rightNode) {
return new XSCMBinOp(type, leftNode, rightNode) ;
}
public void nodeCountCheck(){
if( fSecurityManager != null && nodeCount++ > maxNodeLimit){
if(DEBUG){
System.out.println("nodeCount = " + nodeCount ) ;
System.out.println("nodeLimit = " + maxNodeLimit ) ;
}
fErrorReporter.reportError(XSMessageFormatter.SCHEMA_DOMAIN, "maxOccurLimit", new Object[]{ new Integer(maxNodeLimit) }, XMLErrorReporter.SEVERITY_FATAL_ERROR);
// similarly to entity manager behaviour, take into accont
// behaviour if continue-after-fatal-error is set.
nodeCount = 0;
}
}//nodeCountCheck()
//reset the node count
public void resetNodeCount(){
nodeCount = 0 ;
}
/**
* Sets the value of a property. This method is called by the component
* manager any time after reset when a property changes value.
*
* Note: Components should silently ignore properties
* that do not affect the operation of the component.
*
* @param propertyId The property identifier.
* @param value The value of the property.
*
* @throws SAXNotRecognizedException The component should not throw
* this exception.
* @throws SAXNotSupportedException The component should not throw
* this exception.
*/
public void setProperty(String propertyId, Object value)
throws XMLConfigurationException {
// Xerces properties
if (propertyId.startsWith(Constants.XERCES_PROPERTY_PREFIX)) {
final int suffixLength = propertyId.length() - Constants.XERCES_PROPERTY_PREFIX.length();
if (suffixLength == Constants.SECURITY_MANAGER_PROPERTY.length() &&
propertyId.endsWith(Constants.SECURITY_MANAGER_PROPERTY)) {
fSecurityManager = (SecurityManager)value;
maxNodeLimit = (fSecurityManager != null) ? fSecurityManager.getMaxOccurNodeLimit() * MULTIPLICITY : 0 ;
return;
}
if (suffixLength == Constants.ERROR_REPORTER_PROPERTY.length() &&
propertyId.endsWith(Constants.ERROR_REPORTER_PROPERTY)) {
fErrorReporter = (XMLErrorReporter)value;
return;
}
}
} // setProperty(String,Object)
}//CMNodeFactory()