MapAsUnmappedAction.java

/*******************************************************************************
 * Copyright (c) 1998, 2015 Oracle and/or its affiliates. All rights reserved.
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
 * which accompanies this distribution.
 * The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
 * and the Eclipse Distribution License is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * Contributors:
 *     Oracle - initial API and implementation from Oracle TopLink
******************************************************************************/
package org.eclipse.persistence.tools.workbench.mappingsplugin.ui.mapping;

import java.util.Iterator;

import org.eclipse.persistence.tools.workbench.framework.context.WorkbenchContext;
import org.eclipse.persistence.tools.workbench.mappingsmodel.descriptor.MWMappingDescriptor;
import org.eclipse.persistence.tools.workbench.mappingsmodel.mapping.MWMapping;
import org.eclipse.persistence.tools.workbench.mappingsmodel.meta.MWClassAttribute;
import org.eclipse.persistence.tools.workbench.mappingsplugin.ui.descriptor.MappingDescriptorNode;


public final class MapAsUnmappedAction
    extends ChangeMappingTypeAction
{

    public MapAsUnmappedAction(WorkbenchContext context) {
        super(context);
    }

    protected void initialize() {
        super.initialize();
        this.initializeIcon("mapping.unmapped");
        this.initializeText("MAP_AS_UNMAPPED_ACTION");
        this.initializeMnemonic("MAP_AS_UNMAPPED_ACTION");
        this.initializeToolTipText("MAP_AS_UNMAPPED_ACTION.toolTipText");
    }

    protected MWMapping morphMapping(MWMapping mapping) {
        throw new UnsupportedOperationException("use morphNode(MappingNode) directly");
    }

    protected MWMapping addMapping(MWMappingDescriptor descriptor, MWClassAttribute attribute) {
        throw new UnsupportedOperationException("use morphNode(MappingNode) directly");
    }

    protected MappingNode morphNode(MappingNode mappingNode) {
        if (this.nodeIsMorphed(mappingNode)) {
            return mappingNode;
        }
        MappingDescriptorNode descriptorNode = mappingNode.getDescriptorNode();
        MWClassAttribute attribute = mappingNode.instanceVariable();
        descriptorNode.getMappingDescriptor().removeMapping(mappingNode.getMapping());
        for (Iterator stream = descriptorNode.children(); stream.hasNext(); ) {
            MappingNode next = (MappingNode) stream.next();
            if (next.instanceVariable() == attribute) {
                return next;
            }
        }
        throw new IllegalStateException("mapping node not found: " + attribute);
    }

    protected boolean nodeIsMorphed(MappingNode mappingNode) {
        return ! mappingNode.isMapped();
    }

    protected Class mappingClass() {
        throw new UnsupportedOperationException();
    }

}