package org.hibernate.tool.hbm2x.pojo;
import java.util.Iterator;
import java.util.NoSuchElementException;
import org.hibernate.mapping.Property;
/**
* Helper iterator to ignore "backrefs" properties in hibernate mapping model.
*
* @author Max Rydahl Andersen
*
*/
public class SkipBackRefPropertyIterator implements Iterator {
private Iterator delegate;
private Property backLog;
public SkipBackRefPropertyIterator(Iterator iterator) {
delegate = iterator;
}
public boolean hasNext() {
if ( backLog!=null ) {
return true;
} else if ( delegate.hasNext() ) {
Property nextProperty = (Property) delegate.next();
while ( nextProperty.isBackRef() && delegate.hasNext() ) {
nextProperty = (Property) delegate.next();
}
if ( !nextProperty.isBackRef() ) {
backLog = nextProperty;
return true;
}
}
return false;
}
public Object next() {
if ( backLog != null ) {
Property p = backLog;
backLog = null;
return p;
}
Property nextProperty = (Property) delegate.next();
while ( nextProperty.isBackRef() && delegate.hasNext() ) {
nextProperty = (Property) delegate.next();
}
if ( nextProperty.isBackRef() ) {
throw new NoSuchElementException();
}
return nextProperty;
}
public void remove() {
throw new UnsupportedOperationException( "remove() not allowed" );
}
}