Examples of com.facebook.presto.spi.ColumnMetadata

com.facebook.presto.spi.ColumnMetadata


    @Test
    public void getColumnMetadata()
    {
        assertEquals(metadata.getColumnMetadata(NUMBERS_TABLE_HANDLE, new ExampleColumnHandle(CONNECTOR_ID, "text", STRING, 0)),
                new ColumnMetadata("text", STRING, 0, false));


        // example connector assumes that the table handle and column handle are
        // properly formed, so it will return a metadata object for any
        // ExampleTableHandle and ExampleColumnHandle passed in.  This is on because
        // it is not possible for the Presto Metadata system to create the handles

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    @Test(expectedExceptions = UnsupportedOperationException.class)
    public void testCreateTable()
    {
        metadata.createTable(new ConnectorTableMetadata(
                new SchemaTableName("example", "foo"),
                ImmutableList.of(new ColumnMetadata("text", STRING, 0, false))));
    }

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    }


    private static void assertReadFields(RecordCursor cursor, List<ColumnMetadata> schema)
    {
        for (int columnIndex = 0; columnIndex < schema.size(); columnIndex++) {
            ColumnMetadata column = schema.get(columnIndex);
            if (!cursor.isNull(columnIndex)) {
                Type type = column.getType();
                if (BOOLEAN.equals(type)) {
                    cursor.getBoolean(columnIndex);
                }
                else if (BIGINT.equals(type)) {
                    cursor.getLong(columnIndex);

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    private void doCreateTable(SchemaTableName tableName, String tableOwner)
            throws InterruptedException
    {
        // begin creating the table
        List<ColumnMetadata> columns = ImmutableList.<ColumnMetadata>builder()
                .add(new ColumnMetadata("id", BIGINT, 1, false))
                .build();


        ConnectorTableMetadata tableMetadata = new ConnectorTableMetadata(tableName, columns, tableOwner);
        HiveOutputTableHandle outputHandle = client.beginCreateTable(SESSION, tableMetadata);

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        }
    }


    private void createDummyTable(SchemaTableName tableName)
    {
        List<ColumnMetadata> columns = ImmutableList.of(new ColumnMetadata("dummy", VARCHAR, 1, false));
        ConnectorTableMetadata tableMetadata = new ConnectorTableMetadata(tableName, columns, tableOwner);
        ConnectorOutputTableHandle handle = metadata.beginCreateTable(SESSION, tableMetadata);
        metadata.commitCreateTable(handle, ImmutableList.<String>of());
    }

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    private void doCreateSampledTable()
            throws InterruptedException
    {
        // begin creating the table
        List<ColumnMetadata> columns = ImmutableList.<ColumnMetadata>builder()
                .add(new ColumnMetadata("sales", BIGINT, 1, false))
                .build();


        ConnectorTableMetadata tableMetadata = new ConnectorTableMetadata(temporaryCreateSampledTable, columns, tableOwner, true);
        ConnectorOutputTableHandle outputHandle = metadata.beginCreateTable(SESSION, tableMetadata);

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    private void doCreateTable()
            throws InterruptedException
    {
        // begin creating the table
        List<ColumnMetadata> columns = ImmutableList.<ColumnMetadata>builder()
                .add(new ColumnMetadata("id", BIGINT, 1, false))
                .add(new ColumnMetadata("t_string", VARCHAR, 2, false))
                .add(new ColumnMetadata("t_bigint", BIGINT, 3, false))
                .add(new ColumnMetadata("t_double", DOUBLE, 4, false))
                .add(new ColumnMetadata("t_boolean", BOOLEAN, 5, false))
                .build();


        ConnectorTableMetadata tableMetadata = new ConnectorTableMetadata(temporaryCreateTable, columns, tableOwner);
        ConnectorOutputTableHandle outputHandle = metadata.beginCreateTable(SESSION, tableMetadata);

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    }


    private static void assertReadFields(RecordCursor cursor, List<ColumnMetadata> schema)
    {
        for (int columnIndex = 0; columnIndex < schema.size(); columnIndex++) {
            ColumnMetadata column = schema.get(columnIndex);
            if (!cursor.isNull(columnIndex)) {
                if (BOOLEAN.equals(column.getType())) {
                    cursor.getBoolean(columnIndex);
                }
                else if (BIGINT.equals(column.getType())) {
                    cursor.getLong(columnIndex);
                }
                else if (DOUBLE.equals(column.getType())) {
                    cursor.getDouble(columnIndex);
                }
                else if (VARCHAR.equals(column.getType()) || VARBINARY.equals(column.getType())) {
                    try {
                        cursor.getSlice(columnIndex);
                    }
                    catch (RuntimeException e) {
                        throw new RuntimeException("column " + column, e);
                    }
                }
                else if (TIMESTAMP.equals(column.getType())) {
                    cursor.getLong(columnIndex);
                }
                else {
                    fail("Unknown primitive type " + columnIndex);
                }

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    }


    private static void assertPrimitiveField(Map<String, ColumnMetadata> map, int position, String name, Type type, boolean partitionKey)
    {
        assertTrue(map.containsKey(name));
        ColumnMetadata column = map.get(name);
        assertEquals(column.getOrdinalPosition(), position);
        assertEquals(column.getType(), type, name);
        assertEquals(column.isPartitionKey(), partitionKey, name);
    }

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        metadata.addConnectorMetadata("c3", "c3", new TestingMetadata());


        SchemaTableName table1 = new SchemaTableName("default", "t1");
        metadata.createTable(SESSION, "tpch", new TableMetadata("tpch", new ConnectorTableMetadata(table1,
                ImmutableList.<ColumnMetadata>of(
                        new ColumnMetadata("a", BIGINT, 0, false),
                        new ColumnMetadata("b", BIGINT, 1, false),
                        new ColumnMetadata("c", BIGINT, 2, false),
                        new ColumnMetadata("d", BIGINT, 3, false)))));


        SchemaTableName table2 = new SchemaTableName("default", "t2");
        metadata.createTable(SESSION, "tpch", new TableMetadata("tpch", new ConnectorTableMetadata(table2,
                ImmutableList.<ColumnMetadata>of(
                        new ColumnMetadata("a", BIGINT, 0, false),
                        new ColumnMetadata("b", BIGINT, 1, false)))));


        SchemaTableName table3 = new SchemaTableName("default", "t3");
        metadata.createTable(SESSION, "tpch", new TableMetadata("tpch", new ConnectorTableMetadata(table3,
                ImmutableList.<ColumnMetadata>of(
                        new ColumnMetadata("a", BIGINT, 0, false),
                        new ColumnMetadata("b", BIGINT, 1, false)))));


        // table in different catalog
        SchemaTableName table4 = new SchemaTableName("s2", "t4");
        metadata.createTable(SESSION, "c2", new TableMetadata("tpch", new ConnectorTableMetadata(table4,
                ImmutableList.<ColumnMetadata>of(
                        new ColumnMetadata("a", BIGINT, 0, false)))));


        // valid view referencing table in same schema
        String viewData1 = JsonCodec.jsonCodec(ViewDefinition.class).toJson(
                new ViewDefinition("select a from t1", "tpch", "default", ImmutableList.of(
                        new ViewColumn("a", BIGINT))));

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