Examples of org.apache.cayenne.dba.DbAdapter

org.apache.cayenne.dba.DbAdapter
Defines API needed to handle differences between various databases accessed via JDBC. Implementing classed are intended to be pluggable database-specific adapters. DbAdapter-based architecture is introduced to solve the following problems:
- Make Cayenne code independent from SQL syntax differences between different RDBMS.
- Allow for vendor-specific tuning of JDBC access.


        Map bindings = new HashMap();
        bindings.put("id", new Integer(33006));
        template.setParameters(bindings);


        DbAdapter adapter = getAccessStackAdapter().getAdapter();
        SQLAction plan = adapter.getAction(template, getNode());


        MockOperationObserver observer = new MockOperationObserver();
        Connection c = getConnection();


        try {

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        bindings.put("id", new Long(1));
        bindings.put("name", "a1");
        bindings.put("dob", new Date(System.currentTimeMillis()));
        template.setParameters(bindings);


        DbAdapter adapter = getAccessStackAdapter().getAdapter();
        SQLAction action = adapter.getAction(template, getNode());


        Connection c = getConnection();
        try {
            MockOperationObserver observer = new MockOperationObserver();
            action.performAction(c, observer);

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        SQLTemplate template = new SQLTemplate(
                Object.class,
                "delete from ARTIST where ARTIST_NAME like 'a%'");


        DbAdapter adapter = getAccessStackAdapter().getAdapter();
        SQLAction action = adapter.getAction(template, getNode());


        Connection c = getConnection();
        try {
            MockOperationObserver observer = new MockOperationObserver();
            action.performAction(c, observer);

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        bindings2.put("dob", new Date(System.currentTimeMillis()));
        template.setParameters(new Map[] {
                bindings1, bindings2
        });


        DbAdapter adapter = getAccessStackAdapter().getAdapter();
        SQLAction genericAction = adapter.getAction(template, getNode());
        assertTrue(genericAction instanceof SQLTemplateAction);
        SQLTemplateAction action = (SQLTemplateAction) genericAction;


        assertSame(getAccessStackAdapter().getAdapter(), action.getAdapter());
        assertSame(template, action.getQuery());

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    public void testHasGeneratedKeys1() throws Exception {
        EntityResolver resolver = getDomain().getEntityResolver();


        // test with adapter that supports keys
        DbAdapter adapter = buildAdapter(true);


        InsertBatchQuery batch1 = new InsertBatchQuery(resolver.lookupObjEntity(
                GeneratedColumnTestEntity.class).getDbEntity(), 5);
        assertTrue(new BatchAction(batch1, adapter, resolver).hasGeneratedKeys());

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    public void testHasGeneratedKeys2() throws Exception {
        EntityResolver resolver = getDomain().getEntityResolver();


        // test with adapter that does not support keys...
        DbAdapter adapter = buildAdapter(false);


        InsertBatchQuery batch1 = new InsertBatchQuery(resolver.lookupObjEntity(
                GeneratedColumnTestEntity.class).getDbEntity(), 5);
        assertFalse(new BatchAction(batch1, adapter, resolver).hasGeneratedKeys());

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    protected void buildStatements() {
        dropTables = new HashMap();
        createTables = new HashMap();
        createConstraints = new HashMap();


        DbAdapter adapter = getAdapter();
        Iterator it = dbEntitiesInInsertOrder.iterator();
        while (it.hasNext()) {
            DbEntity dbe = (DbEntity) it.next();


            String name = dbe.getName();


            // build "DROP TABLE"
            dropTables.put(name, adapter.dropTable(dbe));


            // build "CREATE TABLE"
            createTables.put(name, adapter.createTable(dbe));


            // build constraints
            createConstraints.put(name, createConstraintsQueries(dbe));
        }


        PkGenerator pkGenerator = adapter.getPkGenerator();
        dropPK = pkGenerator.dropAutoPkStatements(dbEntitiesRequiringAutoPK);
        createPK = pkGenerator.createAutoPkStatements(dbEntitiesRequiringAutoPK);
    }

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        postprocessors.put(HSQLDBAdapter.class.getName(), new HSQLDBPostprocessor());
    }


    void execute(Connection connection) throws SQLException {


        DbAdapter adapter = AutoAdapter.getDefaultFactory().createAdapter(
                connection.getMetaData());
        if (adapter != null) {
            Postprocessor postprocessor = (Postprocessor) postprocessors.get(adapter
                    .getClass()
                    .getName());
            if (postprocessor != null) {
                postprocessor.execute(connection);
            }

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        };
        return new TransformIterator(maps.iterator(), tr);
    }


    public String nodeAdapterName(String domainName, String nodeName) {
        DbAdapter adapter = findNode(domainName, nodeName).getAdapter();
        return (adapter != null && adapter.getClass() != AutoAdapter.class) ? adapter
                .getClass()
                .getName() : null;
    }

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                logger.warn("NULL "
                        + jta
                        + " DataSource returned from PersistenceUnitInfo");
            }


            DbAdapter adapter = createCustomAdapter(loader.getContext(), unit);
            DataNode node = new DataNode(name);
            if (adapter == null) {
                adapter = new AutoAdapter(new NodeDataSource(node));
            }

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