package org.simantics.structural.synchronization.base;

import org.simantics.db.ReadGraph;
import org.simantics.db.exception.DatabaseException;
import org.simantics.db.layer0.variable.Variable;

/**
 * Utility for updating UIDs in the given component to correspond
 * the RVIs of the given variable. This operation is needed when
 * the mapping is part of a model that is imported to a new database
 * and resource ids have been changed.
 * 
 * @author Hannu Niemistö
 */
public class UpdateComponentUids {
    
    public static <T extends ComponentBase<T>> void update(ReadGraph graph, T component, Variable variable) throws DatabaseException {
        component.uid = variable.getRVI(graph).toString();
        for(Variable childVariable : variable.getChildren(graph)) {
            String childName = childVariable.getName(graph);
            T childComponent = component.getChild(childName);
            if(childComponent != null)
                update(graph, childComponent, childVariable);
        }
    }
    
}