IdentityConstraint.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.mappingsmodel.schema;

import java.util.List;
import java.util.Vector;

import org.eclipse.persistence.tools.workbench.mappingsmodel.MWModel;

import org.eclipse.persistence.descriptors.InheritancePolicy;
import org.eclipse.persistence.oxm.XMLDescriptor;
import org.eclipse.persistence.oxm.mappings.XMLCompositeDirectCollectionMapping;


public abstract class IdentityConstraint
    extends MWModel
{
    /** An xpath expression that selects the elements within this element that have the constraint */
    private volatile String selector;

    /** A list of xpath expressions that determine the components within the selected element that define the constraint */
    private List fields;

    /** Toplink use only */
    protected IdentityConstraint() {
        super();
    }

    protected /* private-protected */ IdentityConstraint(MWModel parent) {
        super(parent);
    }
    public static XMLDescriptor buildDescriptor() {
        XMLDescriptor descriptor = new XMLDescriptor();
        descriptor.setJavaClass(IdentityConstraint.class);

        InheritancePolicy ip = (InheritancePolicy)descriptor.getInheritancePolicy();
        ip.setClassIndicatorFieldName("@type");
        ip.addClassIndicator(KeyIdentityConstraint.class, "key");
        ip.addClassIndicator(KeyRefIdentityConstraint.class, "key-ref");
        ip.addClassIndicator(UniqueIdentityConstraint.class, "unique");

        descriptor.addDirectMapping("selector", "selector/text()");

        XMLCompositeDirectCollectionMapping fieldsMapping = new XMLCompositeDirectCollectionMapping();
        fieldsMapping.setAttributeName("fields");
        fieldsMapping.setGetMethodName("getFieldsForToplink");
        fieldsMapping.setSetMethodName("setFieldsForToplink");
        fieldsMapping.setXPath("fields/field/text()");
        descriptor.addMapping(fieldsMapping);

        return descriptor;
    }
    void reload(org.apache.xerces.impl.xs.identity.IdentityConstraint idConstraint) {
        this.selector = idConstraint.getSelectorStr();

        this.fields = new Vector();
        for (int i = 0; i < idConstraint.getFieldCount(); i ++ ) {
            if(idConstraint.getFieldAt(i) != null){
                this.fields.add(idConstraint.getFieldAt(i));
            }
        }
    }
//******************************************Toplink persistence use****************************************/
    private List getFieldsForToplink() {
        return this.fields;
    }
    private void setFieldsForToplink(List list) {
        this.fields = list;
    }

}