Examples of DataContext

com.google.clearsilver.jsilver.data.DataContext
Manages the global Data object and local variable mappings during rendering.
com.intellij.openapi.actionSystem.DataContext
Allows an action to retrieve information about the context in which it was invoked. @see com.intellij.openapi.actionSystem.AnActionEvent#getDataContext() @see DataConstants @see DataProvider
me.daddychurchill.CityWorld.Context.DataContext
net.hydromatic.optiq.DataContext
Runtime context allowing access to the tables in a database.
net.sourceforge.processdash.data.DataContext
org.apache.cayenne.access.DataContext
Class that provides applications with access to Cayenne persistence features. In most cases this is the only access class directly used in the application.
Most common DataContext use pattern is to create one DataContext per session. "Session" may be a an HttpSession in a web application, or any other similar concept in a multiuser application.

DataObjects are registered with DataContext either implicitly when they are fetched via a query, or read via a relationship from another object, or explicitly via calling {@link #createAndRegisterNewObject(Class)}during new DataObject creation. DataContext tracks changes made to its DataObjects in memory, and flushes them to the database when {@link #commitChanges()}is called. Until DataContext is committed, changes made to its objects are not visible in other DataContexts.

Each DataObject can belong only to a single DataContext. To create a replica of an object from a different DataContext in a local context, use {@link #localObject(ObjectId,Persistent)} method.
For more information see Cayenne User Guide.

Note that all QueryEngine interface methods are deprecated in the DataContext. Since 1.2 release DataContext implements ObjectContext and DataChannel interfaces.
@author Andrus Adamchik
org.apache.metamodel.DataContext
A DataContext represents the central entry point for interactions with datastores. The DataContext contains of the structure of data (in the form of schemas) and interactions (in the form of queries) with data. @author Kasper Sørensen
org.apache.stratos.cartridge.agent.data.publisher.DataContext
org.eobjects.metamodel.DataContext

Examples of org.apache.cayenne.access.DataContext

        ServerRuntime runtime = new ServerRuntime("Yuis", module);
        assertSame(channel, runtime.getChannel());
    }


    public void testGetObjectContext_CustomModule() {
        final ObjectContext context = new DataContext();
        final ObjectContextFactory factory = new ObjectContextFactory() {


            public ObjectContext createContext(DataChannel parent) {
                return context;
            }

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Examples of org.apache.metamodel.DataContext

    Column fooColumn = source.getColumnByQualifiedLabel("schema.table.foo");
    assertNotNull(fooColumn);


    Map<Column, TypeConverter<?, ?>> converters = new HashMap<Column, TypeConverter<?, ?>>();
    converters.put(fooColumn, new StringToIntegerConverter());
    DataContext converted = Converters.addTypeConverter(source, fooColumn,
        new StringToIntegerConverter());


    // only select "bar" which is not converted
    Table table = converted.getDefaultSchema().getTableByName("table");
    Query query = converted.query().from(table).select("bar").toQuery();
    assertEquals("SELECT table.bar FROM schema.table", query.toSql());


    DataSet ds = converted.executeQuery(query);
    assertEquals(InMemoryDataSet.class, ds.getClass());


  }

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Examples of org.apache.metamodel.DataContext


        if (delegate == null) {
            throw new UnsupportedOperationException("Unsupported DataContext type: " + _type);
        }


        final DataContext dataContext = delegate.createDataContext(this);
        if (dataContext == null) {
            throw new IllegalStateException("Factory method failed to produce a non-null DataContext instance");
        }


        return dataContext;

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Examples of org.apache.metamodel.DataContext

                .readFileAsString(targetFile).replaceAll("\n", "!LINEBREAK!"));
    }


    public void testHandlingOfEmptyLinesMultipleLinesSupport() throws Exception {
        // test with multiline values
        DataContext dc = new CsvDataContext(new File("src/test/resources/csv_with_empty_lines.csv"),
                new CsvConfiguration(1, false, true));
        testHandlingOfEmptyLines(dc);
    }

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Examples of org.apache.metamodel.DataContext

        testHandlingOfEmptyLines(dc);
    }


    public void testHandlingOfEmptyLinesSingleLinesSupport() throws Exception {
        // test with only single line values
        DataContext dc = new CsvDataContext(new File("src/test/resources/csv_with_empty_lines.csv"),
                new CsvConfiguration(1, false, false));
        testHandlingOfEmptyLines(dc);
    }

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Examples of org.apache.metamodel.DataContext

        assertFalse(ds.next());
        ds.close();
    }


    public void testEmptyFileNoHeaderLine() throws Exception {
        DataContext dc = new CsvDataContext(new File("src/test/resources/empty_file.csv"), new CsvConfiguration(
                CsvConfiguration.NO_COLUMN_NAME_LINE));
        assertEquals(1, dc.getDefaultSchema().getTableCount());


        Table table = dc.getDefaultSchema().getTables()[0];
        assertEquals("empty_file.csv", table.getName());
        assertEquals(0, table.getColumnCount());
    }

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Examples of org.apache.metamodel.DataContext

        assertEquals("empty_file.csv", table.getName());
        assertEquals(0, table.getColumnCount());
    }


    public void testUnexistingHeaderLine() throws Exception {
        DataContext dc = new CsvDataContext(new File("src/test/resources/csv_people.csv"), new CsvConfiguration(20));
        assertEquals(1, dc.getDefaultSchema().getTableCount());


        Table table = dc.getDefaultSchema().getTables()[0];
        assertEquals("csv_people.csv", table.getName());
        assertEquals(0, table.getColumnCount());
    }

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Examples of org.apache.metamodel.DataContext

    }


    public void testInconsistentColumns() throws Exception {
        CsvConfiguration conf = new CsvConfiguration(CsvConfiguration.DEFAULT_COLUMN_NAME_LINE, "UTF8", ',', '"', '\\',
                true);
        DataContext dc = new CsvDataContext(new File("src/test/resources/csv_inconsistent_columns.csv"), conf);
        DataSet ds = dc.query().from("csv_inconsistent_columns.csv").select("hello").and("world").execute();
        assertTrue(ds.next());
        assertTrue(ds.next());


        try {
            ds.next();

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Examples of org.apache.metamodel.DataContext

        assertTrue(ds.next());
        assertFalse(ds.next());
    }


    public void testApproximatedCountSmallFile() throws Exception {
        DataContext dc = new CsvDataContext(new File("src/test/resources/csv_people.csv"));


        Table table = dc.getDefaultSchema().getTables()[0];
        Query q = dc.query().from(table).selectCount().toQuery();
        SelectItem selectItem = q.getSelectClause().getItem(0);
        selectItem.setFunctionApproximationAllowed(true);


        DataSet ds = dc.executeQuery(q);
        assertTrue(ds.next());
        Object[] values = ds.getRow().getValues();
        assertEquals(1, values.length);
        assertEquals(9, ((Long) ds.getRow().getValue(selectItem)).intValue());
        assertEquals(9, ((Long) values[0]).intValue());

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Examples of org.apache.metamodel.DataContext

        assertEquals("[michael]", Arrays.toString(result.get(0)));
        assertEquals("[hillary]", Arrays.toString(result.get(1)));
    }


    public void testGetFromInputStream() throws Exception {
        DataContext dc = null;


        // repeat this step a few times to test temp-file creation, see Ticket
        // #437
        for (int i = 0; i < 5; i++) {
            File file = new File("src/test/resources/tickets.csv");
            FileInputStream inputStream = new FileInputStream(file);
            dc = new CsvDataContext(inputStream, new CsvConfiguration());
        }


        Schema schema = dc.getDefaultSchema();
        String name = schema.getTable(0).getName();
        assertTrue(name.startsWith("metamodel"));
        assertTrue(name.endsWith("csv"));


        // Test two seperate reads to ensure that the temp file is working

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