Examples of org.apache.cayenne.access.DataNode

org.apache.cayenne.access.DataNode
An abstraction of a single physical data storage. This is usually a database server, but can potentially be some other storage type like an LDAP server, etc.

    protected void setUp() throws Exception {
        super.setUp();


        deleteTestData();
        createTestData("testArtists");
        DataNode orgNode = getDomain().getDataNodes().iterator().next();
        
        
        // clone DataMap by saving and loading from XML as to avoid modifying shared test
        // DataMap
        DataMap originalMap = getDomain().getDataMap("testmap");
        StringWriter out = new StringWriter();
        PrintWriter outWriter = new PrintWriter(out);
        originalMap.encodeAsXML(outWriter);
        outWriter.flush();
        StringReader in = new StringReader(out.toString());
        map = new MapLoader().loadDataMap(new InputSource(in));
        
        // map must operate in an EntityResolve namespace...
        EntityResolver testResolver = new EntityResolver();
        testResolver.addDataMap(map);


        node = new DataNode("mergenode");
        node.setAdapter(orgNode.getAdapter());
        node.setDataSource(orgNode.getDataSource());
        node.addDataMap(map);
        
        domain = new DataDomain("mergetestdomain");
        domain.setEntitySorter(new AshwoodEntitySorter());
        domain.addNode(node);

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        dataDomain.getEntityResolver().applyDBLayerDefaults();
        dataDomain.getEntityResolver().applyObjectLayerDefaults();


        for (DataNodeDescriptor nodeDescriptor : descriptor.getNodeDescriptors()) {
            DataNode dataNode = new DataNode(nodeDescriptor.getName());


            dataNode.setDataSourceLocation(nodeDescriptor.getParameters());


            DataSource dataSource = dataSourceFactory.getDataSource(nodeDescriptor);


            dataNode.setDataSourceFactory(nodeDescriptor.getDataSourceFactoryType());
            dataNode.setDataSource(dataSource);


            // schema update strategy
            String schemaUpdateStrategyType = nodeDescriptor
                    .getSchemaUpdateStrategyType();


            if (schemaUpdateStrategyType == null) {
                dataNode.setSchemaUpdateStrategy(defaultSchemaUpdateStrategy);
                dataNode.setSchemaUpdateStrategyName(defaultSchemaUpdateStrategy
                        .getClass()
                        .getName());
            }
            else {
                SchemaUpdateStrategy strategy = objectFactory.newInstance(
                        SchemaUpdateStrategy.class,
                        schemaUpdateStrategyType);
                dataNode.setSchemaUpdateStrategyName(schemaUpdateStrategyType);
                dataNode.setSchemaUpdateStrategy(strategy);
            }


            // DbAdapter
            dataNode.setAdapter(adapterFactory.createAdapter(nodeDescriptor, dataSource));


            // DataMaps
            for (String dataMapName : nodeDescriptor.getDataMapNames()) {
                dataNode.addDataMap(dataDomain.getDataMap(dataMapName));
            }


            dataDomain.addNode(dataNode);
        }

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        return domain;
    }


    protected DataNode findNode(String domainName, String nodeName) {
        DataDomain domain = findDomain(domainName);
        DataNode node = domain.getNode(nodeName);
        if (node == null) {
            throw new IllegalArgumentException("Can't find DataNode: "
                    + domainName
                    + "."
                    + nodeName);

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        return map;
    }


    protected DataNode findNode(String domainName, String nodeName) throws FindException {
        DataDomain domain = findDomain(domainName);
        DataNode node = domain.getNode(nodeName);
        if (node == null) {
            throw new FindException("Can't find DataNode: " + nodeName);
        }


        return node;

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     * node class.
     * 
     * @since 1.
     */
    protected DataNode createDataNode(String nodeName) {
        return new DataNode(nodeName);
    }

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                        + nodeName
                        + "' without 'factory'.");
            }
        }


        DataNode node = createDataNode(nodeName);


        node.setDataSourceFactory(factory);
        node.setDataSourceLocation(dataSource);


        // load DataSource
        try {
            // use DomainHelper factory if it exists, if not - use factory specified
            // in configuration data
            DataSourceFactory confFactory = config.getDataSourceFactory(factory);
            DataSourceFactory localFactory = (confFactory != null)
                    ? confFactory
                    : (DataSourceFactory) Class.forName(factory).newInstance();


            logger.info("using factory: " + localFactory.getClass().getName());


            localFactory.initializeWithParentConfiguration(config);
            DataSource ds = localFactory.getDataSource(dataSource);
            if (ds != null) {
                logger.info("loaded datasource.");
                node.setDataSource(ds);
            }
            else {
                logger.info("Warning: null datasource.");
                getStatus().getFailedDataSources().put(nodeName, dataSource);
            }

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            throw new ConfigurationException("<map-ref> has no 'name'.");
        }


        logger.info("loaded map-ref: " + mapName + ".");
        DataMap map = null;
        DataNode node = null;


        try {
            map = findMap(domainName, mapName);
        }
        catch (FindException ex) {
            logger.info("Error: unknown map: " + mapName);
            getStatus().addFailedMapRefs(mapName, "unknown map: " + mapName);
            return;
        }


        try {
            node = findNode(domainName, nodeName);
        }
        catch (FindException ex) {
            logger.info("Error: unknown node: " + nodeName);
            getStatus().addFailedMapRefs(mapName, "unknown node: " + nodeName);
            return;
        }


        node.addDataMap(map);
    }

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     * @throws SQLException if a database connection could not be obtained
     */
    protected Connection getConnection() throws SQLException {
        DataDomain domain = Configuration.getSharedConfiguration().getDomain();


        DataNode node = domain.getDataNodes().iterator().next();


        return node.getDataSource().getConnection();
    }

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            if (domainObj == null) {
                throw new ProjectException("Project has no domains configured.");
            }
        }


        DataNode node = domainObj.getNode(name);
        if (node == null) {
            throw new ProjectException(
                "Domain "
                    + domainObj.getName()
                    + " has no node named '"

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        return map;
    }


    protected DataNode findNode(String domainName, String nodeName) throws FindException {
        DataDomain domain = findDomain(domainName);
        DataNode node = domain.getNode(nodeName);
        if (node == null) {
            throw new FindException("Can't find DataNode: " + nodeName);
        }


        return node;

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org.apache.cayenne.access.dbsync.SchemaUpdateStrategyTest

org.apache.cayenne.access.jdbc.BatchAction

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org.apache.cayenne.access.jdbc.RowDescriptor

org.apache.cayenne.access.jdbc.SelectAction

org.apache.cayenne.access.jdbc.UpdateAction

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