Examples with InheritancePolicy org.eclipse.persistence.descriptors.InheritancePolicy used on opensource projects

Example 1 with InheritancePolicy

use of org.eclipse.persistence.descriptors.InheritancePolicy in project eclipselink by eclipse-ee4j.

the class PreLoginMappingAdapter method preLogin.

/* (non-Javadoc)
     * @see org.eclipse.persistence.internal.jaxb.SessionEventListener#preLogin(org.eclipse.persistence.sessions.SessionEvent)
     */
@Override
@SuppressWarnings({ "unchecked", "rawtypes" })
public void preLogin(SessionEvent event) {
    Project project = event.getSession().getProject();
    ClassLoader cl = jpaSession.getDatasourcePlatform().getConversionManager().getLoader();
    DefaultXMLNameTransformer xmlNameTransformer = new DefaultXMLNameTransformer();
    for (Object descriptorAlias : project.getAliasDescriptors().keySet()) {
        ClassDescriptor descriptor = project.getAliasDescriptors().get(descriptorAlias);
        if (!PersistenceWeavedRest.class.isAssignableFrom(descriptor.getJavaClass())) {
            continue;
        }
        if (descriptor.isXMLDescriptor()) {
            XMLDescriptor xmlDescriptor = (XMLDescriptor) project.getAliasDescriptors().get(descriptorAlias);
            if (null != xmlDescriptor) {
                if (null == xmlDescriptor.getDefaultRootElement()) {
                    // set root element
                    xmlDescriptor.setDefaultRootElement(xmlNameTransformer.transformRootElementName(xmlDescriptor.getJavaClass().getName()));
                    // set resultAlwaysXMLRoot to false, so that the elements are not wrapped in JAXBElements when unmarshalling.
                    xmlDescriptor.setResultAlwaysXMLRoot(false);
                }
            }
        }
        XMLCompositeCollectionMapping relationshipMapping = new XMLCompositeCollectionMapping();
        relationshipMapping.setAttributeName("_persistence_relationshipInfo");
        relationshipMapping.setGetMethodName("_persistence_getRelationships");
        relationshipMapping.setSetMethodName("_persistence_setRelationships");
        relationshipMapping.setDescriptor(descriptor);
        CollectionContainerPolicy containerPolicy = new CollectionContainerPolicy(ArrayList.class);
        relationshipMapping.setContainerPolicy(containerPolicy);
        relationshipMapping.setField(new XMLField("_relationships"));
        relationshipMapping.setReferenceClass(Link.class);
        XMLJavaTypeConverter converter = new XMLJavaTypeConverter(RelationshipLinkAdapter.class);
        converter.initialize(relationshipMapping, event.getSession());
        relationshipMapping.setConverter(converter);
        descriptor.addMapping(relationshipMapping);
        XMLCompositeObjectMapping hrefMapping = new XMLCompositeObjectMapping();
        hrefMapping.setAttributeName("_persistence_href");
        hrefMapping.setGetMethodName("_persistence_getHref");
        hrefMapping.setSetMethodName("_persistence_setHref");
        hrefMapping.setDescriptor(descriptor);
        hrefMapping.setField(new XMLField("_link"));
        hrefMapping.setReferenceClass(Link.class);
        hrefMapping.setXPath(".");
        descriptor.addMapping(hrefMapping);
        XMLCompositeObjectMapping itemLinksMapping = new XMLCompositeObjectMapping();
        itemLinksMapping.setAttributeName("_persistence_links");
        itemLinksMapping.setGetMethodName("_persistence_getLinks");
        itemLinksMapping.setSetMethodName("_persistence_setLinks");
        itemLinksMapping.setDescriptor(descriptor);
        itemLinksMapping.setReferenceClass(ItemLinks.class);
        itemLinksMapping.setXPath(".");
        descriptor.addMapping(itemLinksMapping);
        ClassDescriptor jpaDescriptor = jpaSession.getDescriptorForAlias(descriptor.getAlias());
        Vector<DatabaseMapping> descriptorMappings = (Vector<DatabaseMapping>) descriptor.getMappings().clone();
        for (DatabaseMapping mapping : descriptorMappings) {
            if (mapping.isXMLMapping()) {
                if (mapping.isAbstractCompositeObjectMapping() || mapping.isAbstractCompositeCollectionMapping()) {
                    if (mapping.isAbstractCompositeCollectionMapping()) {
                        XMLInverseReferenceMapping inverseMapping = ((XMLCompositeCollectionMapping) mapping).getInverseReferenceMapping();
                        if (inverseMapping != null) {
                            break;
                        }
                    } else if (mapping.isAbstractCompositeObjectMapping()) {
                        XMLInverseReferenceMapping inverseMapping = ((XMLCompositeObjectMapping) mapping).getInverseReferenceMapping();
                        if (inverseMapping != null) {
                            break;
                        }
                    }
                    if (jpaDescriptor != null) {
                        DatabaseMapping dbMapping = jpaDescriptor.getMappingForAttributeName(mapping.getAttributeName());
                        if ((dbMapping != null) && (dbMapping instanceof ForeignReferenceMapping)) {
                            ForeignReferenceMapping jpaMapping = (ForeignReferenceMapping) dbMapping;
                            if (jpaMapping.getMappedBy() != null) {
                                ClassDescriptor inverseDescriptor = project.getDescriptorForAlias(jpaMapping.getReferenceDescriptor().getAlias());
                                if (inverseDescriptor != null) {
                                    DatabaseMapping inverseMapping = inverseDescriptor.getMappingForAttributeName(jpaMapping.getMappedBy());
                                    if (inverseMapping != null) {
                                        convertMappingToXMLInverseReferenceMapping(inverseDescriptor, inverseMapping, jpaMapping);
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
        InheritancePolicy inheritancePolicy = descriptor.getInheritancePolicyOrNull();
        if ((inheritancePolicy != null) && (inheritancePolicy.isRootParentDescriptor())) {
            boolean isAbstract = Modifier.isAbstract(descriptor.getJavaClass().getModifiers());
            if (isAbstract) {
                Class subClassToInstantiate = null;
                Map<?, ?> classIndicatorMapping = inheritancePolicy.getClassIndicatorMapping();
                // get one of subclasses that extends this abstract class
                for (Map.Entry<?, ?> entry : classIndicatorMapping.entrySet()) {
                    Object value = entry.getValue();
                    if (value instanceof Class) {
                        subClassToInstantiate = (Class) value;
                        isAbstract = Modifier.isAbstract(subClassToInstantiate.getModifiers());
                        if (!isAbstract) {
                            InstantiationPolicy instantiationPolicy = new InstantiationPolicy();
                            instantiationPolicy.useFactoryInstantiationPolicy(new ConcreteSubclassFactory(subClassToInstantiate), "createConcreteSubclass");
                            descriptor.setInstantiationPolicy(instantiationPolicy);
                            break;
                        }
                    }
                }
            }
        }
    }
    for (Object descriptorAlias : project.getAliasDescriptors().keySet()) {
        ClassDescriptor descriptor = project.getAliasDescriptors().get(descriptorAlias);
        ClassDescriptor jpaDescriptor = jpaSession.getDescriptorForAlias(descriptor.getAlias());
        Vector<DatabaseMapping> descriptorMappings = (Vector<DatabaseMapping>) descriptor.getMappings().clone();
        for (DatabaseMapping mapping : descriptorMappings) {
            if (mapping.isXMLMapping()) {
                if (mapping.isAbstractCompositeObjectMapping() || mapping.isAbstractCompositeCollectionMapping()) {
                    if (jpaDescriptor != null) {
                        DatabaseMapping dbMapping = jpaDescriptor.getMappingForAttributeName(mapping.getAttributeName());
                        if ((dbMapping instanceof ForeignReferenceMapping)) {
                            ForeignReferenceMapping jpaMapping = (ForeignReferenceMapping) dbMapping;
                            ClassDescriptor jaxbDescriptor = project.getDescriptorForAlias(jpaMapping.getDescriptor().getAlias());
                            convertMappingToXMLChoiceMapping(jaxbDescriptor, jpaMapping, cl, jpaSession);
                        }
                    } else if (mapping instanceof XMLCompositeObjectMapping) {
                        // Fix for Bug 403113 - JPA-RS Isn't Serializing an Embeddable defined in an ElementCollection to JSON Correctly
                        // add choice mapping for one-to-one relationships within embeddables
                        // Based on (http://wiki.eclipse.org/EclipseLink/Examples/JPA/NoSQL#Step_2_:_Map_the_data),
                        // the mappedBy option on relationships is not supported for NoSQL data, so no need to add inverse mapping
                        XMLCompositeObjectMapping jpaMapping = (XMLCompositeObjectMapping) mapping;
                        ClassDescriptor jaxbDescriptor = project.getDescriptorForAlias(jpaMapping.getDescriptor().getAlias());
                        if (jaxbDescriptor != null) {
                            Class clazz = jpaMapping.getReferenceClass();
                            if (clazz != null) {
                                if ((jpaSession.getDescriptor(clazz) != null) && (jpaSession.getDescriptor(clazz).isEISDescriptor()))
                                    convertMappingToXMLChoiceMapping(jaxbDescriptor, jpaMapping, cl, jpaSession);
                            }
                        }
                    }
                }
            }
        }
    }
}

Example 2 with InheritancePolicy

use of org.eclipse.persistence.descriptors.InheritancePolicy in project eclipselink by eclipse-ee4j.

the class ProjectClassGeneratorInheritanceMappingTest method setup.

/**
 * Setup what we want written out.
 */
@Override
public void setup() {
    InheritancePolicy iPolicy = project.getDescriptor(org.eclipse.persistence.testing.models.employee.domain.Project.class).getInheritancePolicy();
    // Inheritance Properties.
    iPolicy.addClassIndicator(org.eclipse.persistence.testing.models.employee.domain.SmallProject.class, Byte.valueOf("1"));
    iPolicy.addClassIndicator(org.eclipse.persistence.testing.models.employee.domain.LargeProject.class, Short.valueOf("2"));
    iPolicy.addClassIndicator(org.eclipse.persistence.testing.models.employee.domain.Project.class, Long.valueOf("3"));
    iPolicy.addClassIndicator(org.eclipse.persistence.testing.models.employee.domain.PhoneNumber.class, Double.valueOf("4.0"));
}

Example 3 with InheritancePolicy

use of org.eclipse.persistence.descriptors.InheritancePolicy in project eclipselink by eclipse-ee4j.

the class ObjectBuilder method buildObject.

/**
 * Return an instance of the receivers javaClass. Set the attributes of an instance
 * from the values stored in the database row.
 */
public Object buildObject(ObjectBuildingQuery query, AbstractRecord databaseRow, JoinedAttributeManager joinManager) {
    InheritancePolicy inheritancePolicy = null;
    if (this.descriptor.hasInheritance()) {
        inheritancePolicy = this.descriptor.getInheritancePolicy();
    }
    AbstractSession session = query.getSession();
    session.startOperationProfile(SessionProfiler.ObjectBuilding, query, SessionProfiler.ALL);
    Object domainObject = null;
    try {
        domainObject = buildObject(query, databaseRow, joinManager, session, this.descriptor, inheritancePolicy, session.isUnitOfWork(), query.shouldCacheQueryResults(), query.shouldUseWrapperPolicy());
    } finally {
        session.endOperationProfile(SessionProfiler.ObjectBuilding, query, SessionProfiler.ALL);
    }
    return domainObject;
}

Example 4 with InheritancePolicy

use of org.eclipse.persistence.descriptors.InheritancePolicy in project eclipselink by eclipse-ee4j.

the class ExpressionQueryMechanism method prepareSelectOneRow.

/**
 * Pre-build the SQL statement from the expression.
 */
@Override
public void prepareSelectOneRow() {
    // 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()) {
            // outer join into a single select that can be built normally
            setSQLStatement(buildNormalSelectStatement());
            super.prepareSelectOneRow();
        } else if (!getDescriptor().getInheritancePolicy().hasClassExtractor()) {
            // CR#3158703 otherwise if using a type indicator at least the type select can be prepared.
            setSQLStatement(getDescriptor().getInheritancePolicy().buildClassIndicatorSelectStatement((ObjectLevelReadQuery) getQuery()));
            super.prepareSelectOneRow();
        }
    }
}

Example 5 with InheritancePolicy

use of org.eclipse.persistence.descriptors.InheritancePolicy in project eclipselink by eclipse-ee4j.

the class ExpressionQueryMechanism method prepareSelectAllRows.

/**
 * Pre-build the SQL statement from the expression.
 */
@Override
public void prepareSelectAllRows() {
    // 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()) {
            // outer join into a single select that can be built normally
            setSQLStatement(buildNormalSelectStatement());
            super.prepareSelectAllRows();
        } else if (!getDescriptor().getInheritancePolicy().hasClassExtractor()) {
            // CR#3158703 otherwise if using a type indicator at least the type select can be prepared.
            setSQLStatement(getDescriptor().getInheritancePolicy().buildClassIndicatorSelectStatement((ObjectLevelReadQuery) getQuery()));
            super.prepareSelectAllRows();
        }
    }
}