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

            }


            // 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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            // Allows an query type, or a custom query class.
            DatabaseQuery newQuery = query;
            if (valueToApply.equals(QueryType.ReadAll)) {
                newQuery = new ReadAllQuery();
            } else if (valueToApply.equals(QueryType.ReadObject)) {
                newQuery = new ReadObjectQuery();
            } else if (valueToApply.equals(QueryType.Report)) {
                newQuery = new ReportQuery();
                if (query.isObjectLevelReadQuery()) {
                    ((ReportQuery)newQuery).addAttribute("root", ((ReportQuery)newQuery).getExpressionBuilder());
                }

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        if(null == xmlRow.getDOM().getAttributes().getNamedItemNS(XMLConstants.SCHEMA_INSTANCE_URL, XMLConstants.SCHEMA_NIL_ATTRIBUTE)) {
            xmlRow.setUnmarshaller(xmlUnmarshaller);
            xmlRow.setDocPresPolicy(xmlContext.getDocumentPreservationPolicy(readSession));
            XMLObjectBuilder objectBuilder = (XMLObjectBuilder) descriptor.getObjectBuilder();


            ReadObjectQuery query = new ReadObjectQuery();
            query.setReferenceClass(referenceClass);
            query.setSession(readSession);
            object = objectBuilder.buildObject(query, xmlRow, null);


            // resolve mapping references
            xmlUnmarshaller.resolveReferences(readSession);
        }

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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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                    // value read query
                    databaseQueryToInitialize = new ValueReadQuery();
                }
                else {
                    // read object query for the class mapped to the type
                    databaseQueryToInitialize = new ReadObjectQuery(xrService.getTypeClass(type));
                }
            }
        }
        else {
            databaseQueryToInitialize = new DataModifyQuery();

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                int cacheUsage = ((Integer)valueToApply).intValue();
                ((ObjectLevelReadQuery)query).setCacheUsage(cacheUsage);
                if (cacheUsage == ObjectLevelReadQuery.CheckCacheByExactPrimaryKey
                        || cacheUsage == ObjectLevelReadQuery.CheckCacheByPrimaryKey
                        || cacheUsage == ObjectLevelReadQuery.CheckCacheThenDatabase) {
                    ReadObjectQuery newQuery = new ReadObjectQuery();
                    newQuery.copyFromQuery(query);
                    return newQuery;
                }
            } else if (query.isModifyAllQuery()) {
                int cacheUsage = ((Integer)valueToApply).intValue();
                ((ModifyAllQuery)query).setCacheUsage(cacheUsage);

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     * @see  {@link Operation}
     */
    @SuppressWarnings("unchecked")
    @Override
    public Object invoke(XRServiceAdapter xrService, Invocation invocation) {
        ReadObjectQuery roq = 
            (ReadObjectQuery)classDescriptor.getQueryManager().getQuery(PK_QUERYNAME);
        List queryArguments = roq.getArguments();
        int queryArgumentsSize = queryArguments.size();
        Vector executeArguments = new NonSynchronizedVector();
        for (int i = 0; i < queryArgumentsSize; i++) {
            String argName = (String)queryArguments.get(i);
            executeArguments.add(invocation.getParameter(argName));

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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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    /**
     * 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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     */
    @Override
    public void buildClone(Object original, CacheKey cacheKey, Object clone, Integer refreshCascade, AbstractSession cloningSession) {
        Object attributeValue = null;
        if (!this.isCacheable && (cacheKey != null && !cacheKey.isIsolated())){
            ReadObjectQuery query = new ReadObjectQuery(descriptor.getJavaClass());
            query.setSession(cloningSession);
            attributeValue = valueFromRow(cacheKey.getProtectedForeignKeys(), null, query, cacheKey, cloningSession, true, null);
        }else{
            attributeValue = getAttributeValueFromObject(original);
        }
        attributeValue = this.indirectionPolicy.cloneAttribute(attributeValue, original, cacheKey, clone, refreshCascade, cloningSession, false); // building clone from an original not a row.

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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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