Examples of DatabaseMapping

oracle.toplink.essentials.mappings.DatabaseMapping
Purpose: Defines how an attribute of an object maps to and from the database
Responsibilities:
- Define type of relationship (1:1/1:M/M:M/etc.)
- Define instance variable name and fields names required
- Define any additional properties (ownership, indirection, read only, etc.)
- Control building the value for the instance variable from the database row
- Control building the database fields from the object
- Control any pre/post updating/inserting/deleting required to maintain the relationship
- Merges object changes for unit of work.
- Clones objects for unit of work.
- cache computed information to optimize performance
@author Sati @since TOPLink/Java 1.0
org.eclipse.persistence.mappings.DatabaseMapping
Purpose: Defines how an attribute of an object maps to and from the database
Responsibilities:
- Define type of relationship (1:1/1:M/M:M/etc.)
- Define instance variable name and fields names required
- Define any additional properties (ownership, indirection, read only, etc.)
- Control building the value for the instance variable from the database row
- Control building the database fields from the object
- Control any pre/post updating/inserting/deleting required to maintain the relationship
- Merges object changes for unit of work.
- Clones objects for unit of work.
- cache computed information to optimize performance
@author Sati @since TOPLink/Java 1.0

Examples of org.eclipse.persistence.mappings.DatabaseMapping

                ClassDescriptor descriptor = olrq.getDescriptor();
                Expression expression = olrq.getExpressionBuilder();
                while (tokenizer.hasMoreTokens()){
                    String token = tokenizer.nextToken();
                    ForeignReferenceMapping frMapping = null;
                    DatabaseMapping mapping = descriptor.getObjectBuilder().getMappingForAttributeName(token);
                    if (mapping == null){
                        throw QueryException.queryHintNavigatedNonExistantRelationship(query, QueryHints.FETCH, valueToApply, previousToken + "." + token);
                    } else if (!mapping.isForeignReferenceMapping()){
                        throw QueryException.queryHintNavigatedIllegalRelationship(query, QueryHints.FETCH, valueToApply, previousToken + "." + token);
                    } else {
                        frMapping = (ForeignReferenceMapping)mapping;
                    }
                    descriptor = frMapping.getReferenceDescriptor();

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Examples of org.eclipse.persistence.mappings.DatabaseMapping

                ClassDescriptor descriptor = olrq.getDescriptor();
                Expression expression = olrq.getExpressionBuilder();
                while (tokenizer.hasMoreTokens()){
                    String token = tokenizer.nextToken();
                    ForeignReferenceMapping frMapping = null;
                    DatabaseMapping mapping = descriptor.getObjectBuilder().getMappingForAttributeName(token);
                    if (mapping == null){
                        throw QueryException.queryHintNavigatedNonExistantRelationship(query, QueryHints.LEFT_FETCH, valueToApply, previousToken + "." + token);
                    } else if (!mapping.isForeignReferenceMapping()){
                        throw QueryException.queryHintNavigatedIllegalRelationship(query, QueryHints.LEFT_FETCH, valueToApply, previousToken + "." + token);
                    } else {
                        frMapping = (ForeignReferenceMapping)mapping;
                    }
                    descriptor = frMapping.getReferenceDescriptor();

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Examples of org.eclipse.persistence.mappings.DatabaseMapping

     */
    protected Vector buildDeleteAllStatementsForMappingsWithTempTable(ClassDescriptor descriptor, DatabaseTable rootTable, Collection rootTablePrimaryKeyFields, boolean dontCheckDescriptor) {
        Vector deleteStatements = new Vector();
        Iterator itMappings = descriptor.getMappings().iterator();
        while(itMappings.hasNext()) {
            DatabaseMapping mapping = (DatabaseMapping)itMappings.next();
            if(mapping.isManyToManyMapping() || mapping.isDirectCollectionMapping()) {
                if(dontCheckDescriptor || mapping.getDescriptor().equals(descriptor)) {
                    Vector targetFields = null;
                    if(mapping.isManyToManyMapping()) {
                        targetFields = ((ManyToManyMapping)mapping).getSourceRelationKeyFields();
                    } else if(mapping.isDirectCollectionMapping()) {
                        targetFields = ((DirectCollectionMapping)mapping).getReferenceKeyFields();
                    }


                    DatabaseTable targetTable = ((DatabaseField)targetFields.firstElement()).getTable();
                    SQLDeleteAllStatementForTempTable deleteStatement

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Examples of org.eclipse.persistence.mappings.DatabaseMapping

    // in the tables NOT mapped to any class: ManyToManyMapping and DirectCollectionMapping
    protected Vector buildDeleteAllStatementsForMappings(SQLCall selectCallForExist, SQLSelectStatement selectStatementForExist, boolean dontCheckDescriptor) {
        Vector deleteStatements = new Vector();
        Iterator itMappings = getDescriptor().getMappings().iterator();
        while(itMappings.hasNext()) {
            DatabaseMapping mapping = (DatabaseMapping)itMappings.next();
            if(mapping.isManyToManyMapping() || mapping.isDirectCollectionMapping()) {
                if(dontCheckDescriptor || mapping.getDescriptor().equals(getDescriptor())) {
                    Vector sourceFields = null;
                    Vector targetFields = null;
                    if(mapping.isManyToManyMapping()) {
                        sourceFields = ((ManyToManyMapping)mapping).getSourceKeyFields();
                        targetFields = ((ManyToManyMapping)mapping).getSourceRelationKeyFields();
                    } else if(mapping.isDirectCollectionMapping()) {
                        sourceFields = ((DirectCollectionMapping)mapping).getSourceKeyFields();
                        targetFields = ((DirectCollectionMapping)mapping).getReferenceKeyFields();
                    }
                    deleteStatements.addElement(buildDeleteAllStatementForMapping(selectCallForExist, selectStatementForExist, sourceFields, targetFields));
                }

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Examples of org.eclipse.persistence.mappings.DatabaseMapping

                // it should be either QueryKeyExpression or FieldExpression
                fieldExpression = (DataExpression)fieldObject;
            }


            DatabaseField field = null;
            DatabaseMapping mapping = null;
            if(attributeName != null) {
                mapping = getDescriptor().getObjectBuilder().getMappingForAttributeName(attributeName);
                if (mapping != null && !mapping.getFields().isEmpty()) {
                    field = mapping.getFields().get(0);
                }
                if(field == null) {
                    throw QueryException.updateAllQueryAddUpdateDoesNotDefineField(getDescriptor(), getQuery(), attributeName);
                }
                baseExpression = ((UpdateAllQuery)getQuery()).getExpressionBuilder().get(attributeName);
            } else if (fieldExpression != null) {
                // it should be either QueryKeyExpression or ExpressionBuilder
                if (fieldExpression.getBaseExpression() instanceof ExpressionBuilder) {
                    field = getDescriptor().getObjectBuilder().getFieldForQueryKeyName(fieldExpression.getName());
                }
                if(field == null) {
                    DataExpression fieldExpressionClone = (DataExpression)fieldExpression.clone();
                    fieldExpressionClone.getBuilder().setQueryClass(getQuery().getReferenceClass());
                    fieldExpressionClone.getBuilder().setSession(getSession().getRootSession(null));
                    field = fieldExpressionClone.getField();
                    if(field == null) {
                        throw QueryException.updateAllQueryAddUpdateDoesNotDefineField(getDescriptor(), getQuery(), fieldExpression.toString());
                    }
                }
                mapping = getDescriptor().getObjectBuilder().getMappingForField(field);
                baseExpression = fieldExpression;
            }


            Object valueObject = entry.getValue();
            Vector fields;
            Vector values;
            Vector baseExpressions;
            if(mapping != null && mapping.isOneToOneMapping()) {
                fields = mapping.getFields();
                int fieldsSize = fields.size();
                values = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(fieldsSize);
                baseExpressions = org.eclipse.persistence.internal.helper.NonSynchronizedVector.newInstance(fieldsSize);
                for(int i=0; i<fieldsSize; i++) {
                    if(valueObject instanceof ConstantExpression) {

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Examples of org.eclipse.persistence.mappings.DatabaseMapping

        }
        
        // We didn't find a mapping on our descriptor (or a parent descriptor), 
        // check our aggregate descriptors now.
        for (MetadataDescriptor embeddableDescriptor : m_embeddableDescriptors) {
            DatabaseMapping mapping = embeddableDescriptor.getMappingForAttributeName(attributeName, referencingAccessor);
            
            if (mapping != null) {
                return mapping;
            }
        }

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Examples of org.eclipse.persistence.mappings.DatabaseMapping

     * This returns a collection of all fields associated with this object. Really
     * only applies to query keys representing an object or to expression builders.
     */
    public Vector getFields() {
        if (getDescriptor() == null) {
            DatabaseMapping mapping = getMapping();
            if (mapping != null) {
                return mapping.getSelectFields();
            }
            return new NonSynchronizedVector(0);
        }
        if (descriptor.hasInheritance() && descriptor.getInheritancePolicy().shouldReadSubclasses()
                && (!descriptor.getInheritancePolicy().hasMultipleTableChild()) || shouldUseOuterJoinForMultitableInheritance()) {

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Examples of org.eclipse.persistence.mappings.DatabaseMapping

                    //indecies of the others.
                    SDOType containingType = (SDOType)getContainingType();
                    Vector<DatabaseMapping> mappings = containingType.getXmlDescriptor().getMappings();
                    boolean added = false;
                    for(int i = 0; i < mappings.size(); i++) {
                        DatabaseMapping next = mappings.get(i);
                        SDOProperty associatedProperty = containingType.getProperty(next.getAttributeName());
                        if(associatedProperty != null && indexToAdd < associatedProperty.getIndexInType()) {
                            mappings.add(i, xmlMapping);
                            added = true;
                            break;
                        }

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Examples of org.eclipse.persistence.mappings.DatabaseMapping

                continue;
            }
            ClassDescriptor xdesc = oxProject.getDescriptorForAlias(desc.getAlias());
            int idx = 0;
            for (Iterator j = desc.getMappings().iterator(); j.hasNext();) {
                DatabaseMapping dm = (DatabaseMapping) j.next();
                String attributeName = dm.getAttributeName();
                DatabaseMapping xdm = xdesc.getMappingForAttributeName(attributeName);
                dm.setAttributeAccessor(new BaseEntityAccessor(attributeName, idx));
                if (xdm != null) {
                    if (dm.isForeignReferenceMapping()) {
                        ForeignReferenceMapping frm = (ForeignReferenceMapping)dm;
                        if (frm.usesIndirection() && frm.getIndirectionPolicy().getClass().
                            isAssignableFrom(BasicIndirectionPolicy.class)) {
                            xdm.setAttributeAccessor(new BaseEntityVHAccessor(attributeName, idx));
                        } else {
                            // no indirection or indirection that is transparent enough (!) to work
                            xdm.setAttributeAccessor(new BaseEntityAccessor(attributeName, idx));
                        }
                    }
                    else {
                        xdm.setAttributeAccessor(new BaseEntityAccessor(attributeName, idx));
                        if (xdm.isDirectToFieldMapping()) {
                            XMLDirectMapping xmlDM = (XMLDirectMapping)xdm;
                            XMLField xmlField = (XMLField)xmlDM.getField();
                            Class clz = SCHEMA_2_CLASS.get(xmlField.getSchemaType());
                            if (clz != null) {
                                xmlField.setType(clz);
                            }
                            else {
                                xmlField.setType(OBJECT);
                            }
                        }
                        else if (xdm.isAbstractCompositeDirectCollectionMapping()) {
                            AbstractCompositeDirectCollectionMapping acdcm =
                                (AbstractCompositeDirectCollectionMapping)xdm;
                            XMLField xmlField = (XMLField)acdcm.getField();
                            Class clz = SCHEMA_2_CLASS.get(xmlField.getSchemaType());
                            if (clz != null) {

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Examples of org.eclipse.persistence.mappings.DatabaseMapping

        if (descriptor.shouldAcquireCascadedLocks()) {
            FetchGroupManager fetchGroupManager = descriptor.getFetchGroupManager();
            boolean isPartialObject = (fetchGroupManager != null) && fetchGroupManager.isPartialObject(objectForClone);
            for (Iterator mappings = descriptor.getLockableMappings().iterator();
                     mappings.hasNext();) {
                DatabaseMapping mapping = (DatabaseMapping)mappings.next();
                // Only cascade fetched mappings.
                if (!isPartialObject || (fetchGroupManager.isAttributeFetched(objectForClone, mapping.getAttributeName()))) {
                    // any mapping in this list must not have indirection.
                    Object objectToLock = mapping.getAttributeValueFromObject(objectForClone);
                    if (mapping.isCollectionMapping()) {
                        // Ignore null, means empty.
                        if (objectToLock != null) {
                            ContainerPolicy cp = mapping.getContainerPolicy();
                            Object iterator = cp.iteratorFor(objectToLock);
                            while (cp.hasNext(iterator)) {
                                Object object = cp.next(iterator, session);
                                if (mapping.getReferenceDescriptor().hasWrapperPolicy()) {
                                    object = mapping.getReferenceDescriptor().getWrapperPolicy().unwrapObject(object, session);
                                }
                            CacheKey toWaitOn = checkAndLockObject(object, lockedObjects, refreshedObjects, mapping, session, unitOfWork);
                                if (toWaitOn != null) {
                                    return toWaitOn;
                                }
                            }
                        }
                    } else {
                        if (mapping.getReferenceDescriptor().hasWrapperPolicy()) {
                            objectToLock = mapping.getReferenceDescriptor().getWrapperPolicy().unwrapObject(objectToLock, session);
                        }
                    CacheKey toWaitOn = checkAndLockObject(objectToLock, lockedObjects, refreshedObjects, mapping, session, unitOfWork);
                        if (toWaitOn != null) {
                            return toWaitOn;
                        }

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