Examples of org.eclipse.persistence.queries.DoesExistQuery

org.eclipse.persistence.queries.DoesExistQuery

Purpose: This should only be used by the descriptor, this should not be executed directly. Used to determine if an object resides on the database. DoesExistQuery is normally used to determine whether to make an update or insert statement when writing an object.
Responsibilities: Verify the existence of an object. Used only by a write object query. @author Yvon Lavoie @since TOPLink/Java 1.0

        XMLCompositeObjectMapping doesExistQueryMapping = new XMLCompositeObjectMapping();
        doesExistQueryMapping.setAttributeName("doesExistQuery");
        // Handle translation of default does-exist to null.
        doesExistQueryMapping.setAttributeAccessor(new AttributeAccessor() {
            public Object getAttributeValueFromObject(Object object) {
                DoesExistQuery query = ((DescriptorQueryManager)object).getDoesExistQuery();
                if ((!query.isCallQuery()) && query.shouldCheckCacheForDoesExist()) {
                    return null;
                }
                return query;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                DoesExistQuery query = (DoesExistQuery)value;
                if (value == null) {
                    return;
                }
                ((DescriptorQueryManager)object).setDoesExistQuery(query);
            }

View Full Code Here

        XMLCompositeObjectMapping doesExistQueryMapping = new XMLCompositeObjectMapping();
        doesExistQueryMapping.setAttributeName("doesExistQuery");
        // Handle translation of default does-exist to null.
        doesExistQueryMapping.setAttributeAccessor(new AttributeAccessor() {
            public Object getAttributeValueFromObject(Object object) {
                DoesExistQuery query = ((DescriptorQueryManager)object).getDoesExistQuery();
                if ((!query.isCallQuery()) && query.shouldCheckCacheForDoesExist()) {
                    return null;
                }
                return query;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                DoesExistQuery query = (DoesExistQuery)value;
                if (value == null) {
                    return;
                }
                ((DescriptorQueryManager)object).setDoesExistQuery(query);
            }

View Full Code Here

                }
            }            
            return objectFromCache;
        }


        DoesExistQuery existQuery = descriptor.getQueryManager().getDoesExistQuery();
        // Optimize cache option to avoid executing the does exist query.
        if (existQuery.shouldCheckCacheForDoesExist()) {
            checkNewObjectLockVersion(clone, primaryKey, descriptor, unitOfWork);
            Object registeredObject = unitOfWork.internalRegisterObject(clone, descriptor);            
            if (unitOfWork.hasNewObjects() && unitOfWork.getNewObjectsOriginalToClone().containsKey(clone)) {
                this.mergedNewObjects.put(registeredObject, registeredObject);
            }            
            return registeredObject;
        }


        // Check early return to check if it is a new object, i.e. null primary key.
        Boolean doesExist = Boolean.FALSE;
        if (primaryKey != null) {
            doesExist = (Boolean)existQuery.checkEarlyReturn(clone, primaryKey, unitOfWork, null);
        }
        if (doesExist == Boolean.FALSE) {
            checkNewObjectLockVersion(clone, primaryKey, descriptor, unitOfWork);
            Object registeredObject = unitOfWork.internalRegisterObject(clone, descriptor);//should use cloneAndRegisterNewObject to avoid the exist check
            this.mergedNewObjects.put(registeredObject, registeredObject);

View Full Code Here

        XMLCompositeObjectMapping doesExistQueryMapping = new XMLCompositeObjectMapping();
        doesExistQueryMapping.setAttributeName("doesExistQuery");
        // Handle translation of default does-exist to null.
        doesExistQueryMapping.setAttributeAccessor(new AttributeAccessor() {
            public Object getAttributeValueFromObject(Object object) {
                DoesExistQuery query = ((DescriptorQueryManager)object).getDoesExistQuery();
                if ((!query.isCallQuery()) && query.shouldCheckCacheForDoesExist()) {
                    return null;
                }
                return query;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                DoesExistQuery query = (DoesExistQuery)value;
                if (value == null) {
                    return;
                }
                ((DescriptorQueryManager)object).setDoesExistQuery(query);
            }

View Full Code Here

                }
            }            
            return objectFromCache;
        }


        DoesExistQuery existQuery = descriptor.getQueryManager().getDoesExistQuery();
        // Optimize cache option to avoid executing the does exist query.
        if (existQuery.shouldCheckCacheForDoesExist()) {
            checkNewObjectLockVersion(clone, primaryKey, descriptor, unitOfWork);
            Object registeredObject = unitOfWork.internalRegisterObject(clone, descriptor);            
            if (unitOfWork.hasNewObjects() && unitOfWork.getNewObjectsOriginalToClone().containsKey(clone)) {
                this.mergedNewObjects.put(registeredObject, registeredObject);
            }            
            return registeredObject;
        }


        // Check early return to check if it is a new object, i.e. null primary key.
        Boolean doesExist = Boolean.FALSE;
        if (primaryKey != null) {
            doesExist = (Boolean)existQuery.checkEarlyReturn(clone, primaryKey, unitOfWork, null);
        }
        if (doesExist == Boolean.FALSE) {
            checkNewObjectLockVersion(clone, primaryKey, descriptor, unitOfWork);
            Object registeredObject = unitOfWork.internalRegisterObject(clone, descriptor);//should use cloneAndRegisterNewObject to avoid the exist check
            this.mergedNewObjects.put(registeredObject, registeredObject);

View Full Code Here

     * INTERNAL:
     * Initialize the state of the descriptor query manager
     */
    public DescriptorQueryManager() {
        this.queries = new LinkedHashMap(5);
        setDoesExistQuery(new DoesExistQuery());// Always has a does exist.
        this.setQueryTimeout(DefaultTimeout);
    }

View Full Code Here

        XMLCompositeObjectMapping doesExistQueryMapping = new XMLCompositeObjectMapping();
        doesExistQueryMapping.setAttributeName("doesExistQuery");
        // Handle translation of default does-exist to null.
        doesExistQueryMapping.setAttributeAccessor(new AttributeAccessor() {
            public Object getAttributeValueFromObject(Object object) {
                DoesExistQuery query = ((DescriptorQueryManager)object).getDoesExistQuery();
                if ((!query.isCallQuery()) && query.shouldCheckCacheForDoesExist()) {
                    return null;
                }
                return query;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                DoesExistQuery query = (DoesExistQuery)value;
                if (value == null) {
                    return;
                }
                ((DescriptorQueryManager)object).setDoesExistQuery(query);
            }

View Full Code Here

        XMLCompositeObjectMapping doesExistQueryMapping = new XMLCompositeObjectMapping();
        doesExistQueryMapping.setAttributeName("doesExistQuery");
        // Handle translation of default does-exist to null.
        doesExistQueryMapping.setAttributeAccessor(new AttributeAccessor() {
            public Object getAttributeValueFromObject(Object object) {
                DoesExistQuery query = ((DescriptorQueryManager)object).getDoesExistQuery();
                if ((!query.isCallQuery()) && query.shouldCheckCacheForDoesExist()) {
                    return null;
                }
                return query;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                DoesExistQuery query = (DoesExistQuery)value;
                if (value == null) {
                    return;
                }
                ((DescriptorQueryManager)object).setDoesExistQuery(query);
            }

View Full Code Here

        XMLCompositeObjectMapping doesExistQueryMapping = new XMLCompositeObjectMapping();
        doesExistQueryMapping.setAttributeName("doesExistQuery");
        // Handle translation of default does-exist to null.
        doesExistQueryMapping.setAttributeAccessor(new AttributeAccessor() {
            public Object getAttributeValueFromObject(Object object) {
                DoesExistQuery query = ((DescriptorQueryManager)object).getDoesExistQuery();
                if ((!query.isCallQuery()) && query.shouldCheckCacheForDoesExist()) {
                    return null;
                }
                return query;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                DoesExistQuery query = (DoesExistQuery)value;
                if (value == null) {
                    return;
                }
                ((DescriptorQueryManager)object).setDoesExistQuery(query);
            }

View Full Code Here

        XMLCompositeObjectMapping doesExistQueryMapping = new XMLCompositeObjectMapping();
        doesExistQueryMapping.setAttributeName("doesExistQuery");
        // Handle translation of default does-exist to null.
        doesExistQueryMapping.setAttributeAccessor(new AttributeAccessor() {
            public Object getAttributeValueFromObject(Object object) {
                DoesExistQuery query = ((DescriptorQueryManager)object).getDoesExistQuery();
                if ((!query.isCallQuery()) && query.shouldCheckCacheForDoesExist()) {
                    return null;
                }
                return query;
            }


            public void setAttributeValueInObject(Object object, Object value) {
                DoesExistQuery query = (DoesExistQuery)value;
                if (value == null) {
                    return;
                }
                ((DescriptorQueryManager)object).setDoesExistQuery(query);
            }

View Full Code Here

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org.eclipse.persistence.descriptors.DescriptorQueryManager

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org.eclipse.persistence.internal.sessions.AbstractRecord

org.eclipse.persistence.internal.sessions.AbstractSession

org.eclipse.persistence.internal.sessions.factories.ObjectPersistenceRuntimeXMLProject

org.eclipse.persistence.internal.sessions.MergeManager

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