Examples of org.eclipse.persistence.queries.ReadObjectQuery

org.eclipse.persistence.queries.ReadObjectQuery

Purpose: Concrete class for all read queries involving a single object.

Responsibilities: Return a single object for the query. Implements the inheritance feature when dealing with abstract descriptors. @author Yvon Lavoie @since TOPLink/Java 1.0

        try {
            verifyOpen();
            
            if (lockMode.name().contains(ObjectLevelReadQuery.PESSIMISTIC)) {
                // Get the read object query and apply the properties to it.        
                ReadObjectQuery query = getReadObjectQuery(entity, properties);
                
                // Apply any EclipseLink defaults if they haven't been set through
                // the properties.
                if (properties == null || ! properties.containsKey(QueryHints.REFRESH)) {
                    query.refreshIdentityMapResult();
                }
                
                if (properties == null || ! properties.containsKey(QueryHints.REFRESH_CASCADE)) {
                    query.cascadePrivateParts();
                }
                
                executeQuery(query, lockMode, getActivePersistenceContext(checkForTransaction(false)));
            } else {
                RepeatableWriteUnitOfWork context = getActivePersistenceContext(checkForTransaction(false));

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        // for XMLObjectReferenceMappings we need a non-shared cache, so
        // try and get a Unit Of Work from the XMLContext
        AbstractSession readSession = xmlContext.getReadSession(referenceClass);


        ReadObjectQuery query = new ReadObjectQuery();
        query.setReferenceClass(referenceClass);
        query.setSession(readSession);


        XMLDescriptor descriptor = (XMLDescriptor) readSession.getDescriptor(referenceClass);
        if (descriptor == null) {
            throw XMLMarshalException.descriptorNotFoundInProject(referenceClass.getName());
        }

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    /**
     * INTERNAL:
     */
    protected ReadObjectQuery getQuery() {
        if (m_query == null) {
            m_query = new ReadObjectQuery(m_parentClass);
            
            Expression selectionCriteria = null;
            Iterator keys = m_queryKeyFields.keySet().iterator();
            ExpressionBuilder builder = new ExpressionBuilder();

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                        if (!xrService.descriptorsByQName.containsKey(type)) {
                            databaseQueryToInitialize = new ValueReadQuery();
                        }
                        else {
                            // read object query for the class mapped to the type
                            databaseQueryToInitialize = new ReadObjectQuery(xrService.getTypeClass(type));
                        }
                    }
                    else {
                        // special case - no out args for SP: the return
                        // will be a single int
                        // rowcount
                        databaseQueryToInitialize = new DataModifyQuery();
                    }
                }
                else {
                    if (!xrService.descriptorsByQName.containsKey(type)) {
                      if (type.equals(SXF_QNAME)) {
                        databaseQueryToInitialize = new DataReadQuery();
                      }
                      else {
                        databaseQueryToInitialize = new ValueReadQuery();
                      }
                    }
                    else {
                        // read object query for the class mapped to the type
                        databaseQueryToInitialize = new ReadObjectQuery(xrService.getTypeClass(type));
                    }
                }
            }
        }
        else {

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            }


            // PROCESS TRANSFORMATION MAPPINGS
            List transformationMappings = treeObjectBuilder.getTransformationMappings();
            if (null != transformationMappings) {
                ReadObjectQuery query = new ReadObjectQuery();
                query.setSession(session);
                int transformationMappingsSize = transformationMappings.size();
                AbstractTransformationMapping transformationMapping;
                for (int x = 0; x < transformationMappingsSize; x++) {
                    transformationMapping = (AbstractTransformationMapping)transformationMappings.get(x);
                    transformationMapping.readFromRowIntoObject(transformationRecord, null, object, query, session);

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            }


            // PROCESS TRANSFORMATION MAPPINGS
            List transformationMappings = treeObjectBuilder.getTransformationMappings();
            if (null != transformationMappings) {
                ReadObjectQuery query = new ReadObjectQuery();
                query.setSession(session);
                for (int x = 0, transformationMappingsSize = transformationMappings.size(); x < transformationMappingsSize; x++) {
                    AbstractTransformationMapping transformationMapping = (AbstractTransformationMapping)transformationMappings.get(x);
                    transformationMapping.readFromRowIntoObject(transformationRecord, null, currentObject, query, session);
                }
            }

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        if (type == null) {
            throw new IllegalArgumentException("DynamicHelper.createQuery: Dynamic type not found: " + typeName);
        }


        return new ReadObjectQuery(type.getJavaClass());
    }

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    public void setReadObjectSQLString(String sqlString) {
        if (sqlString == null) {
            return;
        }


        ReadObjectQuery query = new ReadObjectQuery();
        query.setSQLString(sqlString);
        setReadObjectQuery(query);
    }

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     */
    public void setReadObjectCall(Call call) {
        if (call == null) {
            return;
        }
        ReadObjectQuery query = new ReadObjectQuery();
        query.setCall(call);
        setReadObjectQuery(query);
    }

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            }


            // PROCESS TRANSFORMATION MAPPINGS
            List transformationMappings = treeObjectBuilder.getTransformationMappings();
            if (null != transformationMappings) {
                ReadObjectQuery query = new ReadObjectQuery();
                query.setSession(session);
                for (int x = 0, transformationMappingsSize = transformationMappings.size(); x < transformationMappingsSize; x++) {
                    AbstractTransformationMapping transformationMapping = (AbstractTransformationMapping)transformationMappings.get(x);
                    transformationMapping.readFromRowIntoObject(transformationRecord, null, currentObject, null, query, session, true);
                }
            }

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org.eclipse.persistence.descriptors.ClassDescriptor

org.eclipse.persistence.descriptors.DescriptorQueryManager

org.eclipse.persistence.descriptors.InterfacePolicy

org.eclipse.persistence.dynamic.DynamicHelper

org.eclipse.persistence.internal.descriptors.CascadeLockingPolicy

org.eclipse.persistence.internal.dynamic.DynamicEntityImpl

org.eclipse.persistence.internal.identitymaps.CacheId

org.eclipse.persistence.internal.jpa.EJBQueryImpl

org.eclipse.persistence.internal.jpa.EntityManagerImpl

org.eclipse.persistence.internal.jpa.QueryHintsHandler$CacheUsageHint

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