Examples of oracle.toplink.essentials.descriptors.InheritancePolicy

Package oracle.toplink.essentials.descriptors

Examples of oracle.toplink.essentials.descriptors.InheritancePolicy

oracle.toplink.essentials.descriptors.InheritancePolicy

Purpose: Allows customization of an object's inheritance. The primary supported inheritance model uses a class type indicator column in the table that stores the object's class type. The class-to-type mapping is specified on this policy. The full class name can also be used for the indicator instead of the mapping.
Each subclass can either share their parents table, or in addition add their own table(s).
For legacy models a customized inheritance class-extractor can be provided. This allows Java code to be used to compute the class type to use for a row. When this customized inheritance model is used an only-instances and with-all-subclasses filter expression may be required for concrete and branch querying.

        if (getQuery().isReportQuery()) {
            SQLSelectStatement statement = buildReportQuerySelectStatement(false);
            setSQLStatement(statement);
            // For bug 2718118 inheritance with cursors is supported provided there is a read all subclasses view.
        } else if (getDescriptor().hasInheritance() && getDescriptor().getInheritancePolicy().requiresMultipleTableSubclassRead() && getDescriptor().getInheritancePolicy().hasView()) {
            InheritancePolicy inheritancePolicy = getDescriptor().getInheritancePolicy();
            SQLSelectStatement statement = inheritancePolicy.buildViewSelectStatement((ObjectLevelReadQuery)getQuery());
            setSQLStatement(statement);
        } else {
            setSQLStatement(buildNormalSelectStatement());
        }

View Full Code Here

     * This method should only be used recursively by getQuery().
     */
    protected DatabaseQuery getQueryFromParent(String name, Vector arguments) {
        ClassDescriptor descriptor = getDescriptor();
        if (descriptor.hasInheritance()) {
            InheritancePolicy inheritancePolicy = descriptor.getInheritancePolicy();
            ClassDescriptor parent = inheritancePolicy.getParentDescriptor();


            // if parent exists, check for the query
            if (parent != null) {
                return parent.getQueryManager().getQuery(name, arguments);
            }

View Full Code Here

        if (hasInheritance()) {
            Vector children = getInheritancePolicy().getChildDescriptors();


            // use indeces to avoid synchronization.
            for (int i = 0; i < children.size(); i++) {
                InheritancePolicy child = (InheritancePolicy)children.elementAt(0);
                child.getDescriptor().reInitializeJoinedAttributes();
            }
        }
    }

View Full Code Here

    public Vector withAllSubclasses(CommitOrderDependencyNode node) {
        Vector results = new Vector();
        results.addElement(node);


        if (node.getDescriptor().hasInheritance()) {
            InheritancePolicy p = node.getDescriptor().getInheritancePolicy();


            // For bug 3019934 replace getChildDescriptors with getAllChildDescriptors.
            for (Enumeration e = p.getAllChildDescriptors().elements(); e.hasMoreElements();) {
                results.addElement(getOwner().nodeFor((ClassDescriptor)e.nextElement()));
            }
        }
        return results;
    }

View Full Code Here

TOP

Related Classes of oracle.toplink.essentials.descriptors.InheritancePolicy

oracle.toplink.essentials.descriptors.ClassDescriptor

oracle.toplink.essentials.descriptors.DescriptorQueryManager

oracle.toplink.essentials.internal.queryframework.ExpressionQueryMechanism

oracle.toplink.essentials.internal.security.PrivilegedClassForName

oracle.toplink.essentials.internal.sessions.AbstractRecord

oracle.toplink.essentials.internal.sessions.CommitOrderDependencyNode

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.