Examples of org.eclipse.persistence.internal.expressions.QueryKeyExpression

Package org.eclipse.persistence.internal.expressions

Examples of org.eclipse.persistence.internal.expressions.QueryKeyExpression

org.eclipse.persistence.internal.expressions.QueryKeyExpression
Represents expression on query keys or mappings. This includes direct, relationships query keys and mappings.

     * Iterate through a list of expressions searching for the given attribute name.
     * Return true if it is found, false otherwise.
     */
    protected boolean isAttributeNameInJoinedExpressionList(String attributeName, List joinedExpressionList) {
        for (Iterator joinEnum = joinedExpressionList.iterator(); joinEnum.hasNext();) {
            QueryKeyExpression expression = (QueryKeyExpression)joinEnum.next();
            while (!expression.getBaseExpression().isExpressionBuilder()) {
                expression = (QueryKeyExpression)expression.getBaseExpression();
            }
            if (expression.getName().equals(attributeName)) {
                return true;
            }
        }
        return false;
    }

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    protected void prepareJoinExpression(Expression expression, AbstractSession session) {
        // Must be query key expression.
        if (!expression.isQueryKeyExpression()) {
            throw QueryException.mappingForExpressionDoesNotSupportJoining(expression);
        }
        QueryKeyExpression objectExpression = (QueryKeyExpression)expression;


        // Expression may not have been initialized.
        objectExpression.getBuilder().setSession(session.getRootSession(null));
        if (objectExpression.getBuilder().getQueryClass() == null){
            objectExpression.getBuilder().setQueryClass(this.descriptor.getJavaClass());
        }
        // Can only join relationships.
        if ((objectExpression.getMapping() == null) || (!objectExpression.getMapping().isJoiningSupported())) {
            throw QueryException.mappingForExpressionDoesNotSupportJoining(objectExpression);
        }


        // Search if any of the expression traverse a 1-m.
        ObjectExpression baseExpression = objectExpression;

View Full Code Here

     */
    protected Object extractValueFromExpression(Expression expression, DatabaseQuery query) {
        Object value = null;
        expression.getBuilder().setSession(query.getSession());
        if (expression.isQueryKeyExpression()) {
            QueryKeyExpression queryKeyExpression = (QueryKeyExpression)expression;
            value = queryKeyExpression.getField();
            if ((queryKeyExpression.getMapping() != null) && queryKeyExpression.getMapping().getDescriptor().isDescriptorTypeAggregate()) {
                String name = queryKeyExpression.getField().getName();
                while (queryKeyExpression.getBaseExpression().isQueryKeyExpression()
                        && (((QueryKeyExpression)queryKeyExpression.getBaseExpression()).getMapping().isAbstractCompositeObjectMapping()
                        || ((QueryKeyExpression)queryKeyExpression.getBaseExpression()).getMapping().isAbstractCompositeCollectionMapping()
                        || ((QueryKeyExpression)queryKeyExpression.getBaseExpression()).getMapping().isAbstractCompositeDirectCollectionMapping())) {
                    queryKeyExpression = (QueryKeyExpression)queryKeyExpression.getBaseExpression();
                    if (queryKeyExpression.getMapping().isAbstractCompositeObjectMapping()) {
                        name = ((AbstractCompositeObjectMapping)queryKeyExpression.getMapping()).getField().getName() + "." + name;                        
                    } else if (queryKeyExpression.getMapping().isAbstractCompositeCollectionMapping()) {
                        name = ((AbstractCompositeCollectionMapping)queryKeyExpression.getMapping()).getField().getName() + "." + name;                        
                    } else if (queryKeyExpression.getMapping().isAbstractCompositeDirectCollectionMapping()) {
                        name = ((AbstractCompositeDirectCollectionMapping)queryKeyExpression.getMapping()).getField().getName() + "." + name;                        
                    }
                }
                DatabaseField field = new DatabaseField();
                field.setName(name);
                value = field;

View Full Code Here

        
        if (expression.isMapEntryExpression()){
            MapEntryExpression teExpression = (MapEntryExpression)expression;
            
            // get the expression that we want the table entry for
            QueryKeyExpression baseExpression = (QueryKeyExpression)teExpression.getBaseExpression();
            
            // get the expression that owns the mapping for the table entry
            Expression owningExpression = baseExpression.getBaseExpression();
            ClassDescriptor owningDescriptor = getLeafDescriptorFor(owningExpression, rootDescriptor);
            
            // Get the mapping that owns the table
            CollectionMapping mapping = (CollectionMapping)owningDescriptor.getObjectBuilder().getMappingForAttributeName(baseExpression.getName());
            
            if (teExpression.shouldReturnMapEntry()){
                return mapping;
            }
            if (mapping.getContainerPolicy().isMappedKeyMapPolicy()){
                MappedKeyMapContainerPolicy policy = (MappedKeyMapContainerPolicy)mapping.getContainerPolicy();
                return (DatabaseMapping)policy.getKeyMapping();
            }
            return mapping;
        }


        QueryKeyExpression qkExpression = (QueryKeyExpression)expression;
        Expression baseExpression = qkExpression.getBaseExpression();


        ClassDescriptor descriptor = getLeafDescriptorFor(baseExpression, rootDescriptor);
        if (descriptor == null){
            return null;
        }
        return descriptor.getObjectBuilder().getMappingForAttributeName(qkExpression.getName());
    }

View Full Code Here

            return false;
        }
        List<Expression> partialAttributeExpressions = getPartialAttributeExpressions();
        int size = partialAttributeExpressions.size();
        for (int index = 0; index < size; index++) {
            QueryKeyExpression expression = (QueryKeyExpression)partialAttributeExpressions.get(index);
            while (!expression.getBaseExpression().isExpressionBuilder()) {
                expression = (QueryKeyExpression)expression.getBaseExpression();
            }
            if (expression.getName().equals(attributeName)) {
                return true;
            }
        }
        return false;
    }

View Full Code Here

            return false;
        }
        List<Expression> partialAttributeExpressions = getPartialAttributeExpressions();
        int size = partialAttributeExpressions.size();
        for (int index = 0; index < size; index++) {
            QueryKeyExpression expression = (QueryKeyExpression)partialAttributeExpressions.get(index);
            while (!expression.getBaseExpression().isExpressionBuilder()) {
                expression = (QueryKeyExpression)expression.getBaseExpression();
            }
            if (expression.getName().equals(attributeName)) {
                return true;
            }
        }
        return false;
    }

View Full Code Here

    * Iterate through a list of expressions searching for the given attribute name.
    * Return true if it is found, false otherwise.
    */
    protected boolean isAttributeNameInJoinedExpressionList(String attributeName, List joinedExpressionList) {
        for (Iterator joinEnum = joinedExpressionList.iterator(); joinEnum.hasNext();) {
            QueryKeyExpression expression = (QueryKeyExpression)joinEnum.next();
            while (!expression.getBaseExpression().isExpressionBuilder()) {
                expression = (QueryKeyExpression)expression.getBaseExpression();
            }
            if (expression.getName().equals(attributeName)) {
                return true;
            }
        }
        return false;
    }

View Full Code Here

    protected Expression prepareJoinExpression(Expression expression, AbstractSession session) {
        // Must be query key expression.
        if (!expression.isQueryKeyExpression()) {
            throw QueryException.mappingForExpressionDoesNotSupportJoining(expression);
        }
        QueryKeyExpression objectExpression = (QueryKeyExpression)expression;


        // Expression may not have been initialized.
        if (objectExpression.getBuilder().getQueryClass() == null) {
            objectExpression = (QueryKeyExpression)objectExpression.rebuildOn(this.baseExpressionBuilder);
            
            if (objectExpression.getBuilder().getQueryClass() == null) {
                objectExpression.getBuilder().setQueryClass(this.descriptor.getJavaClass());
            }
        }
        objectExpression.getBuilder().setSession(session.getRootSession(null));
        
        // Can only join relationships.
        if ((objectExpression.getMapping() == null) || (!objectExpression.getMapping().isJoiningSupported())) {
            throw QueryException.mappingForExpressionDoesNotSupportJoining(objectExpression);
        }


        // Search if any of the expression traverse a 1-m.
        ObjectExpression baseExpression = objectExpression;

View Full Code Here

     * Iterate through a list of expressions searching for the given attribute name.
     * Return true if it is found, false otherwise.
     */
    protected boolean isAttributeNameInJoinedExpressionList(String attributeName, List joinedExpressionList) {
        for (Iterator joinEnum = joinedExpressionList.iterator(); joinEnum.hasNext();) {
            QueryKeyExpression expression = (QueryKeyExpression)joinEnum.next();
            while (!expression.getBaseExpression().isExpressionBuilder()) {
                expression = (QueryKeyExpression)expression.getBaseExpression();
            }
            if (expression.getName().equals(attributeName)) {
                return true;
            }
        }
        return false;
    }

View Full Code Here

    protected void prepareJoinExpression(Expression expression, AbstractSession session) {
        // Must be query key expression.
        if (!expression.isQueryKeyExpression()) {
            throw QueryException.mappingForExpressionDoesNotSupportJoining(expression);
        }
        QueryKeyExpression objectExpression = (QueryKeyExpression)expression;


        // Expression may not have been initialized.
        objectExpression.getBuilder().setSession(session.getRootSession(null));
        if (objectExpression.getBuilder().getQueryClass() == null){
            objectExpression.getBuilder().setQueryClass(this.descriptor.getJavaClass());
        }
        // Can only join relationships.
        if ((objectExpression.getMapping() == null) || (!objectExpression.getMapping().isJoiningSupported())) {
            throw QueryException.mappingForExpressionDoesNotSupportJoining(objectExpression);
        }


        // Search if any of the expression traverse a 1-m.
        ObjectExpression baseExpression = objectExpression;

View Full Code Here

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Related Classes of org.eclipse.persistence.internal.expressions.QueryKeyExpression

org.eclipse.persistence.descriptors.ClassDescriptor

org.eclipse.persistence.descriptors.FetchGroupManager

org.eclipse.persistence.internal.queries.JoinedAttributeManager

org.eclipse.persistence.internal.queries.MappedKeyMapContainerPolicy

org.eclipse.persistence.internal.sessions.UnitOfWorkImpl

org.eclipse.persistence.nosql.adapters.mongo.MongoPlatform

org.eclipse.persistence.queries.BatchFetchPolicy

org.eclipse.persistence.queries.ObjectLevelReadQuery

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