Examples of 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.
org.eclipse.persistence.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.

Examples of org.eclipse.persistence.descriptors.InheritancePolicy

    private void setInheritancePolicy(MetadataDescriptor descriptor) {
        if (m_strategy == null && ! descriptor.isInheritanceSubclass()) {
            // TODO: Log a defaulting message
        }
        
        descriptor.getClassDescriptor().setInheritancePolicy(new InheritancePolicy(descriptor.getClassDescriptor()));
    }

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Examples of org.eclipse.persistence.descriptors.InheritancePolicy

        ComplexType ct = new ComplexType();
        if (!anonymous) {
            ct.setName(desc.getSchemaReference().getSchemaContextAsQName(workingSchema.getNamespaceResolver()).getLocalPart());
        }


        InheritancePolicy inheritancePolicy = desc.getInheritancePolicyOrNull();
        Extension extension = null;
        if (inheritancePolicy != null && inheritancePolicy.getParentClass() != null) {
            extension = new Extension();
            extension.setBaseType(desc.getSchemaReference().getSchemaContextAsQName(workingSchema.getNamespaceResolver()).getLocalPart());
            ComplexContent complexContent = new ComplexContent();
            complexContent.setExtension(extension);
            ct.setComplexContent(complexContent);

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Examples of org.eclipse.persistence.descriptors.InheritancePolicy

        super.initialize(session);
        XMLDescriptor xmlDescriptor = (XMLDescriptor)getDescriptor();


        // INHERITANCE
        if (xmlDescriptor.hasInheritance()) {
            InheritancePolicy inheritancePolicy = xmlDescriptor.getInheritancePolicy();
            
            if (!inheritancePolicy.hasClassExtractor()) {
                XMLField classIndicatorField = new XMLField(inheritancePolicy.getClassIndicatorFieldName());
                classIndicatorField.setNamespaceResolver(xmlDescriptor.getNamespaceResolver());
            }
        }


        if(!xmlDescriptor.isLazilyInitialized()) {

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Examples of org.eclipse.persistence.descriptors.InheritancePolicy

        // 2612538 - the default size of Map (32) is appropriate
        Map clonedExpressions = new IdentityHashMap();
        SQLSelectStatement selectStatement = buildBaseSelectStatement(false, clonedExpressions);


        ClassDescriptor descriptor = getDescriptor();
        InheritancePolicy policy = descriptor.getInheritancePolicy();
        // The onlyInstances expression is only included on leaf descriptor base select,
        // so if a root or branch (!shouldReadSubclasses means leaf), then it must be appended.
        if (policy.shouldReadSubclasses()) {
            Expression indicatorExpression = null;
            // If the descriptor is a single table branch, then select the whole branch in a single query.
            if (this.query.isReadAllQuery() && policy.hasChildren() && !policy.hasMultipleTableChild()) {
                indicatorExpression = policy.getWithAllSubclassesExpression();
            } else {
                indicatorExpression = policy.getOnlyInstancesExpression();                
            }
            if ((indicatorExpression != null) && (selectStatement.getWhereClause() != null)) {
                selectStatement.setWhereClause(selectStatement.getWhereClause().and(indicatorExpression));
            } else if (indicatorExpression != null) {
                selectStatement.setWhereClause((Expression)indicatorExpression.clone());

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Examples of org.eclipse.persistence.descriptors.InheritancePolicy

        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());
        }

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Examples of org.eclipse.persistence.descriptors.InheritancePolicy

        // Check for multiple table inheritance which may require multiple queries.
        if (!getDescriptor().hasInheritance() || !getDescriptor().getInheritancePolicy().requiresMultipleTableSubclassRead()){
            setSQLStatement(buildNormalSelectStatement());
            super.prepareSelectAllRows();
        } else {
            InheritancePolicy policy = getDescriptor().getInheritancePolicy();
            if (policy.hasView()){
                // CR#3158703 if the descriptor has a view, then it requires a single select,
                // so can be prepared.
                setSQLStatement(getDescriptor().getInheritancePolicy().buildViewSelectStatement((ObjectLevelReadQuery)getQuery()));
                super.prepareSelectAllRows();
            } else if ( ((ObjectLevelReadQuery)getQuery()).shouldOuterJoinSubclasses() ){

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Examples of org.eclipse.persistence.descriptors.InheritancePolicy

        // Check for multiple table inheritance which may require multiple queries.
        if (!getDescriptor().hasInheritance() || !getDescriptor().getInheritancePolicy().requiresMultipleTableSubclassRead()){
            setSQLStatement(buildNormalSelectStatement());
            super.prepareSelectOneRow();
        } else {
            InheritancePolicy policy = getDescriptor().getInheritancePolicy();
            if (policy.hasView()){
                // CR#3158703 if the descriptor has a view, then it requires a single select,
                // so can be prepared.
                setSQLStatement(getDescriptor().getInheritancePolicy().buildViewSelectStatement((ObjectLevelReadQuery)getQuery()));
                super.prepareSelectOneRow();
            } else if ( ((ObjectLevelReadQuery)getQuery()).shouldOuterJoinSubclasses() ){

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Examples of org.eclipse.persistence.descriptors.InheritancePolicy

    private void setInheritancePolicy(MetadataDescriptor descriptor) {
        if (m_strategy == null && ! descriptor.isInheritanceSubclass()) {
            // TODO: Log a defaulting message
        }
        
        descriptor.getClassDescriptor().setInheritancePolicy(new InheritancePolicy(descriptor.getClassDescriptor()));
    }

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Examples of org.eclipse.persistence.descriptors.InheritancePolicy

        ComplexType ct = new ComplexType();
        if (!anonymous) {
            ct.setName(desc.getSchemaReference().getSchemaContextAsQName(workingSchema.getNamespaceResolver()).getLocalPart());
        }


        InheritancePolicy inheritancePolicy = desc.getInheritancePolicyOrNull();
        Extension extension = null;
        if (inheritancePolicy != null && inheritancePolicy.getParentClass() != null) {
            extension = new Extension();
            extension.setBaseType(desc.getSchemaReference().getSchemaContextAsQName(workingSchema.getNamespaceResolver()).getLocalPart());
            ComplexContent complexContent = new ComplexContent();
            complexContent.setExtension(extension);
            ct.setComplexContent(complexContent);

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Examples of org.eclipse.persistence.descriptors.InheritancePolicy

      if(!xmlDescriptor.hasInheritance() || xmlDescriptor.getInheritancePolicy().getClassIndicatorField() == null){
        initialize((TreeObjectBuilder)xmlDescriptor.getObjectBuilder());
        initializeRecord((XMLMapping)null);
          return;
        }
      InheritancePolicy inheritancePolicy = xmlDescriptor.getInheritancePolicy();
      Class classValue = inheritancePolicy.classFromRow(this, session);
       if (classValue == null) {
             // no xsi:type attribute - look for type indicator on the default root element
             QName leafElementType = xmlDescriptor.getDefaultRootElementType();


             // if we have a user-set type, try to get the class from the inheritance policy
             if (leafElementType != null) {
                  XPathQName xpathQName = new XPathQName(leafElementType, isNamespaceAware());
                 Object indicator = inheritancePolicy.getClassIndicatorMapping().get(xpathQName);
                 if(indicator != null) {
                     classValue = (Class)indicator;
                 }
             }
         }

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