Examples of com.mysql.clusterj.core.spi.ValueHandler

com.mysql.clusterj.core.spi.ValueHandler
ValueHandler is the interface that must be implemented for core components to access values of a managed instance.

     * @param instance the instance to save
     */
    public <T> T savePersistent(T instance) {
        DomainTypeHandler domainTypeHandler = getDomainTypeHandler(instance);
        if (logger.isDetailEnabled()) logger.detail("UpdatePersistent on object " + instance);
        ValueHandler valueHandler = domainTypeHandler.getValueHandler(instance);
        startAutoTransaction();
        setPartitionKey(domainTypeHandler, valueHandler);
        Table storeTable = null;
        try {
            storeTable = domainTypeHandler.getStoreTable();

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        // if a partition key has already been set, throw a user exception
        if (this.partitionKey != null) {
            throw new ClusterJUserException(
                    local.message("ERR_Set_Partition_Key_Twice", tableName));
        }
        ValueHandler handler = domainTypeHandler.createKeyValueHandler(key);
        this.partitionKey= domainTypeHandler.createPartitionKey(handler);
        // if a transaction has already begun, tell the cluster transaction about the key
        if (clusterTransaction != null) {
            clusterTransaction.setPartitionKey(partitionKey);
        }

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     * @param instance the persistent instance
     * @param fieldName the field to mark as modified
     */
    public void markModified(Object instance, String fieldName) {
        DomainTypeHandler<?> domainTypeHandler = getDomainTypeHandler(instance);
        ValueHandler handler = domainTypeHandler.getValueHandler(instance);
        domainTypeHandler.objectMarkModified(handler, fieldName);
    }

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        }
    }


    public void objectSetValueFor(Object value, Object row, String indexName) {
        if (includedInIndex(indexName)) {
            ValueHandler handler = (ValueHandler) Proxy.getInvocationHandler(row);
            handler.setObject(fieldNumber, value);
        }
    }

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//                    domainTypeHandler, null,
//                    domainTypeHandler.getValueHandler(sm),
//                    domainTypeHandler.createKeyValueHandler(id.getIdObject()));
                // initialize via OpenJPA protocol
                // select all columns from table
                ValueHandler keyValueHandler = domainTypeHandler.createKeyValueHandler(id.getIdObject());
                ResultData resultData = session.selectUnique(domainTypeHandler,
                        keyValueHandler,
                        null);
                // create an OpenJPA Result from the ndb result data
                NdbOpenJPAResult result = new NdbOpenJPAResult(resultData, domainTypeHandler, null);

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        Collection exceptions = new ArrayList<Exception>();
        for (OpenJPAStateManager sm:stateManagers) {
            // get DomainTypeHandler from StateManager
            NdbOpenJPADomainTypeHandlerImpl<?> domainTypeHandler = getDomainTypeHandler(sm);
            // get the value handler for the StateManager
            ValueHandler valueHandler = domainTypeHandler.getValueHandler(sm, this);
            // now flush based on current PCState
            PCState pcState = sm.getPCState();
            try {
                if (pcState == PCState.PNEW) {
                    // flush new instance

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            int[] keyFields = domainTypeHandler.getKeyFieldNumbers();
            BitSet fieldsInResult = new BitSet();
            for (int i : keyFields) {
                fieldsInResult.set(i);
            }
            ValueHandler handler = domainTypeHandler.getValueHandler(sm, this);
            domainTypeHandler.operationSetKeys(handler, op);
            // include the key columns in the results
            domainTypeHandler.operationGetKeys(op);
            for (NdbOpenJPADomainFieldHandlerImpl fieldHandler : fieldHandlers) {
                fieldHandler.operationGetValue(op);

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                    + " numberOfStatements: " + numberOfStatements
                    );
            // interceptor.beforeClusterjStart();
            // session asks for values by field number which are converted to parameter number
            for (int offset = 0; offset < numberOfBoundParameters; offset += numberOfParameters) {
                ValueHandler valueHandler = getValueHandler(parameterBindings, fieldNumberToColumnNumberMap, offset);
                session.insert(domainTypeHandler, valueHandler);
            }
            session.flush();
            // interceptor.afterClusterjStart();
            return new ResultSetInternalMethodsUpdateCount(numberOfStatements);

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    public ValueHandler getValueHandler(Object instance)
            throws IllegalArgumentException {
        if (instance instanceof ValueHandler) {
            return (ValueHandler)instance;
        } else {
            ValueHandler handler = (ValueHandler)
                    Proxy.getInvocationHandler(instance);
            return handler;
        }
    }

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Related Classes of com.mysql.clusterj.core.spi.ValueHandler

com.mysql.clusterj.core.metadata.AbstractDomainFieldHandlerImpl

com.mysql.clusterj.core.metadata.DomainTypeHandlerImpl

com.mysql.clusterj.core.query.QueryDomainTypeImpl

com.mysql.clusterj.core.SessionImpl

com.mysql.clusterj.jdbc.DomainTypeHandlerImpl

com.mysql.clusterj.jdbc.SQLExecutor$Insert

com.mysql.clusterj.openjpa.NdbOpenJPAStoreManager

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