Package org.eclipse.persistence.internal.identitymaps

Examples of org.eclipse.persistence.internal.identitymaps.CacheId


        if (selectionKey == null) {
            this.selectionId = null;
        } else if (selectionKey.size() == 1) {
            this.selectionId = selectionKey.get(0);           
        } else {
            this.selectionId = new CacheId(selectionKey.toArray());
        }
    }
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     */
    public AbstractRecord buildRow(Object object, AbstractSession session, DatabaseField xmlField, XMLRecord parentRecord) {
        if (isXmlDescriptor() && ((XMLDescriptor)getDescriptor()).shouldPreserveDocument()) {
            Object pk = extractPrimaryKeyFromObject(object, session);
            if ((pk == null) || (pk instanceof CacheId) && (((CacheId)pk).getPrimaryKey().length == 0)) {
                pk = new CacheId(new Object[]{ new WeakObjectWrapper(object) });
            }
            CacheKey cacheKey = session.getIdentityMapAccessorInstance().getCacheKeyForObject(pk, getDescriptor().getJavaClass(), getDescriptor(), false);
            if ((cacheKey != null) && (cacheKey.getRecord() != null)) {
                XMLRecord nestedRecord = (XMLRecord)cacheKey.getRecord();
                nestedRecord.setMarshaller(parentRecord.getMarshaller());
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            unmarshaller.getUnmarshalListener().beforeUnmarshal(domainObject, parent);
        }
        concreteDescriptor.getObjectBuilder().buildAttributesIntoObject(domainObject, null, databaseRow, query, joinManager, false, query.getSession());
        if (isXmlDescriptor() && ((XMLDescriptor)concreteDescriptor).getPrimaryKeyFieldNames().size() > 0) {
            if ((pk == null) || (((CacheId)pk).getPrimaryKey().length == 0)) {
                pk = new CacheId(new Object[]{ new WeakObjectWrapper(domainObject) });
            }
            CacheKey key = query.getSession().getIdentityMapAccessorInstance().acquireDeferredLock(pk, concreteDescriptor.getJavaClass(), concreteDescriptor);
            if (((XMLDescriptor)concreteDescriptor).shouldPreserveDocument()) {
                key.setRecord(databaseRow);
            }
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     */
    private void createPKVectorsFromMap(Reference reference, XMLCollectionReferenceMapping mapping) {
        ClassDescriptor referenceDescriptor = mapping.getReferenceDescriptor();
        Vector pks = new Vector();
        if(null == referenceDescriptor) {
            CacheId pkVals = (CacheId) reference.getPrimaryKeyMap().get(null);
            if(null == pkVals) {
                return;
            }
            for(int x=0;x<pkVals.getPrimaryKey().length; x++) {
                Object[] values = new Object[1];
                values[0] = pkVals.getPrimaryKey()[x];
                pks.add(new CacheId(values));
            }
        } else{
            Vector pkFields = referenceDescriptor.getPrimaryKeyFieldNames();
            if (pkFields.isEmpty()) {
                return;
            }

            boolean init = true;

            // for each primary key field name
            for (Iterator pkFieldNameIt = pkFields.iterator(); pkFieldNameIt.hasNext(); ) {
                CacheId pkVals = (CacheId) reference.getPrimaryKeyMap().get(pkFieldNameIt.next());

                if (pkVals == null) {
                    return;
                }
                // initialize the list of pk vectors once and only once
                if (init) {
                    for (int i=0; i<pkVals.getPrimaryKey().length; i++) {
                        pks.add(new CacheId(new Object[0]));
                    }
                    init = false;
                }

                // now add each value for the current target key to it's own vector
                for (int i=0; i<pkVals.getPrimaryKey().length; i++) {
                    Object val = pkVals.getPrimaryKey()[i];
                    ((CacheId)pks.get(i)).add(val);
                }
            }
        }
        reference.setPrimaryKey(pks);
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                createPKVectorsFromMap(reference, mapping);
                // loop over each pk vector and get object from cache - then add to collection and set on object
                Object value = null;
                if(!mapping.isWriteOnly()) {
                    for (Iterator pkIt = ((Vector)reference.getPrimaryKey()).iterator(); pkIt.hasNext();) {
                        CacheId primaryKey = (CacheId) pkIt.next();
                        value = getValue(session, reference, primaryKey);
                        if (value != null) {
                             cPolicy.addInto(value, container, session);
                        }
                    }
                }
                // for each reference, get the source object and add it to the container policy
                // when finished, set the policy on the mapping
                mapping.setAttributeValueInObject(referenceSourceObject, container);
                XMLInverseReferenceMapping inverseReferenceMapping = mapping.getInverseReferenceMapping();
                if(inverseReferenceMapping != null && value != null) {
                    AttributeAccessor backpointerAccessor = inverseReferenceMapping.getAttributeAccessor();
                    ContainerPolicy backpointerContainerPolicy = inverseReferenceMapping.getContainerPolicy();
                    if(backpointerContainerPolicy == null) {
                        backpointerAccessor.setAttributeValueInObject(value, referenceSourceObject);
                    } else {
                        Object backpointerContainer = backpointerAccessor.getAttributeValueFromObject(value);
                        if(backpointerContainer == null) {
                            backpointerContainer = backpointerContainerPolicy.containerInstance();
                            backpointerAccessor.setAttributeValueInObject(value, backpointerContainer);
                        }
                        backpointerContainerPolicy.addInto(referenceSourceObject, backpointerContainer, session);
                    }
                }
            } else if (reference.getMapping() instanceof XMLObjectReferenceMapping) {
                CacheId primaryKey = (CacheId) reference.getPrimaryKey();
                Object value = getValue(session, reference, primaryKey);
                XMLObjectReferenceMapping mapping = (XMLObjectReferenceMapping)reference.getMapping();
                if (value != null) {
                    mapping.setAttributeValueInObject(reference.getSourceObject(), value);
                }
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                            Object[] pkValues = primaryKey.getPrimaryKey();
                            Object[] convertedPkValues = new Object[pkValues.length];
                            for(int x=0; x<pkValues.length; x++) {
                                convertedPkValues[x] = session.getDatasourcePlatform().getConversionManager().convertObject(pkValues[x], targetType);
                            }
                            value = session.getIdentityMapAccessor().getFromIdentityMap(new CacheId(convertedPkValues), targetDescriptor.getJavaClass());
                        } catch(ConversionException e) {
                        }
                    }
                    if(null != value) {
                        return value;
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            if (getDescriptor().getCacheKeyType() == CacheKeyType.ID_VALUE) {
                return fieldValue;
            }
            primaryKey[index] = fieldValue;
        }
        return new CacheId(primaryKey);
    }
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     */
    public ObjectChangeSet findOrCreateLocalObjectChangeSet(Object entityClone, ClassDescriptor descriptor, boolean isNew){
        ObjectChangeSet changes = (ObjectChangeSet)this.getObjectChangeSetForClone(entityClone);
        if (changes == null) {
            if (descriptor.isAggregateDescriptor()) {
                changes = new AggregateObjectChangeSet(new CacheId(new Object[0]), descriptor, entityClone, this, isNew);
            } else {
                changes = new ObjectChangeSet(descriptor.getObjectBuilder().extractPrimaryKeyFromObject(entityClone, session), descriptor, entityClone, this, isNew);
            }
            changes.setIsAggregate(descriptor.isDescriptorTypeAggregate());
            this.addObjectChangeSetForIdentity(changes, entityClone);
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            if(null != xmlDescriptor) {
                List primaryKeyFields = xmlDescriptor.getPrimaryKeyFields();
                if(null != primaryKeyFields) {
                    int primaryKeyFieldsSize = primaryKeyFields.size();
                    if (primaryKeyFieldsSize > 0) {
                        CacheId pk = (CacheId) treeObjectBuilder.extractPrimaryKeyFromObject(currentObject, session);
                        for (int x=0; x<primaryKeyFieldsSize; x++) {
                            Object value = pk.getPrimaryKey()[x];
                            if (null == value) {
                                XMLField pkField = (XMLField) xmlDescriptor.getPrimaryKeyFields().get(x);
                                pk.set(x, unmarshaller.getXMLContext().getValueByXPath(currentObject, pkField.getXPath(), pkField.getNamespaceResolver(), Object.class));
                            }
                        }
                        referenceResolver.putValue(xmlDescriptor.getJavaClass(), pk, currentObject);
   
                        if (unmarshaller.getIDResolver() != null) {
                            try {
                                if (primaryKeyFieldsSize > 1) {
                                    Map<String, Object> idWrapper = new HashMap<String, Object>();
                                    for (int x = 0; x < primaryKeyFieldsSize; x++) {
                                        String idName = xmlDescriptor.getPrimaryKeyFieldNames().elementAt(x);
                                        Object idValue = pk.getPrimaryKey()[x];
                                        idWrapper.put(idName, idValue);
                                    }
                                    unmarshaller.getIDResolver().bind(idWrapper, currentObject);
                                } else {
                                  unmarshaller.getIDResolver().bind(pk.getPrimaryKey()[0], currentObject);
                                }
                            } catch (SAXException e) {
                                throw XMLMarshalException.unmarshalException(e);
                            }
                        }
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        // the order in which the primary keys are added to the vector is
        // relevant for cache lookup - it must match the ordering of the
        // reference descriptor's primary key entries

        Reference reference = resolver.getReference(this, srcObject);
        CacheId primaryKeys;
        if(null == referenceClass || ClassConstants.OBJECT == referenceClass) {
            if (reference == null) {
                // if reference is null, create a new instance and set it on the resolver
                primaryKeys = new CacheId(new Object[1]);
                reference = new Reference(this, srcObject, referenceClass, primaryKeys);
                resolver.addReference(reference);
                record.reference(reference);
            else {
                primaryKeys = (CacheId) reference.getPrimaryKey();
            }
            primaryKeys.set(0, object);
        } else {
            Vector pkFieldNames = referenceDescriptor.getPrimaryKeyFieldNames();
            // if reference is null, create a new instance and set it on the resolver
            if (reference == null) {
                primaryKeys = new CacheId(new Object[pkFieldNames.size()]);
                reference = new Reference(this, srcObject, referenceClass, primaryKeys);
                resolver.addReference(reference);
                record.reference(reference);
            } else {
                primaryKeys = (CacheId) reference.getPrimaryKey();
            }
            XMLField tgtFld = (XMLField) getSourceToTargetKeyFieldAssociations().get(xmlField);
            int idx = pkFieldNames.indexOf(tgtFld.getQualifiedName());
            // fix for bug# 5687430
            // need to get the actual type of the target (i.e. int, String, etc.)
            // and use the converted value when checking the cache.
            Object value = session.getDatasourcePlatform().getConversionManager().convertObject(object, referenceDescriptor.getTypedField(tgtFld).getType());
            if (value != null) {
                primaryKeys.set(idx, value);
            }
        }
    }
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