Ptidej-v5.2-master/POM Tests/data/ArgoUML_0.28/src/org/argouml/model/mdr/XmiReferenceProviderImpl.java
// $Id: XmiReferenceProviderImpl.java 14771 2008-05-19 19:20:10Z tfmorris $
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package org.argouml.model.mdr;

import java.util.Map;

import javax.jmi.reflect.RefObject;

import org.netbeans.api.xmi.XMIReferenceProvider;

/**
 * Custom reference provider for MDR XMI Writer.
 *
 * Returns our internal ID to be used when writing the xmi.id field
 *
 * @author Tom Morris
 */
class XmiReferenceProviderImpl implements XMIReferenceProvider {
    
    private Map<String, XmiReference> mofIdToXmiId;

    private boolean topSystemIdSaved = false;
    private String topSystemId = null;
    
    /**
     * Create a new reference provider which uses the given map for lookups.
     * 
     * @param idMap
     */
    XmiReferenceProviderImpl(Map<String, XmiReference> idMap) {
        mofIdToXmiId = idMap;
    }

    /*
     * @see org.netbeans.api.xmi.XMIReferenceProvider#getReference(javax.jmi.reflect.RefObject)
     */
    public XMIReferenceProvider.XMIReference getReference(RefObject object) {
        String mofId = object.refMofId();
        
        // Look for an existing reference matching our MofID
        XmiReference ref = mofIdToXmiId.get(mofId);

        // Remember the system id of our root document so that we can write
        // out profiles and linked models to a different file if requested
        if (!topSystemIdSaved) {
            if (ref == null) {
                topSystemId = null;
            } else {
                topSystemId = ref.getSystemId();
            }
            topSystemIdSaved = true;
        }
        
        // Anything not found is newly created, so return a null SystemID
        // indicating that it is in the parent document. 
        // TODO: This assumption will be invalid if/when we allow editing of
        // linked sub-models
        if (ref == null) {
            return new XMIReferenceProvider.XMIReference(null, mofId);
        } else {
            String systemId = ref.getSystemId();
            if (topSystemId != null && topSystemId.equals(systemId)) {
                systemId = null;
            }
            return new XMIReferenceProvider.XMIReference(systemId, 
                    ref.getXmiId());
        }
    }

}
