Content.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.Collection;

import org.apache.xerces.impl.xs.XSComplexTypeDecl;
import org.apache.xerces.xs.XSComplexTypeDefinition;
import org.eclipse.persistence.descriptors.InheritancePolicy;
import org.eclipse.persistence.oxm.XMLDescriptor;

public abstract class Content
    extends AbstractSchemaModel
{
    // **************** Static methods ****************************************

    static Content reloadedContent(ExplicitComplexTypeDefinition complexType,
                                   Content oldContent,
                                   XSComplexTypeDecl typeDecl) {
        Content newContent = oldContent;
        if (typeDecl.getContentType() == XSComplexTypeDefinition.CONTENTTYPE_SIMPLE) {
            if (! (oldContent instanceof SimpleContent)) {
                newContent = new SimpleContent(complexType);
            }
        }
        else if (typeDecl.getContentType() == XSComplexTypeDefinition.CONTENTTYPE_ELEMENT) {
            if (! (oldContent instanceof ComplexContent)) {
                newContent = new ComplexContent(complexType, false);
            }
        }
        else if (typeDecl.getContentType() == XSComplexTypeDefinition.CONTENTTYPE_MIXED) {
            if (! (oldContent instanceof ComplexContent)) {
                newContent = new ComplexContent(complexType, true);
            }
        }
        else {
            // complexTypeNode.getContent() == XSComplexTypeDefinition.CONTENTTYPE_EMPTY
            if (! (oldContent instanceof EmptyContent)) {
                newContent = new EmptyContent(complexType);
            }
        }

        newContent.reload(typeDecl);
        return newContent;
    }

    public static XMLDescriptor buildDescriptor() {
        XMLDescriptor descriptor = new XMLDescriptor();
        descriptor.setJavaClass(Content.class);

        InheritancePolicy ip = (InheritancePolicy)descriptor.getInheritancePolicy();
        ip.setClassIndicatorFieldName("@type");
        ip.addClassIndicator(ComplexContent.class, "complex");
        ip.addClassIndicator(SimpleContent.class, "simple");
        ip.addClassIndicator(EmptyContent.class, "empty");

        return descriptor;
    }


    // **************** Constructors ******************************************

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

    Content(ExplicitComplexTypeDefinition parent) {
        super(parent);
    }


    // **************** Behavior **********************************************

    /** No-op */
    void addDirectlyOwnedComponentsTo(Collection directlyOwnedComponents) {}

    abstract boolean hasTextContent();

    abstract boolean containsWildcard();

    /** Default implementation */
    int compareSchemaOrder(MWElementDeclaration element1, MWElementDeclaration element2) {
        return 0;
    }
}