Package com.facebook.presto.spi

Examples of com.facebook.presto.spi.ConnectorTableMetadata

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    @Test
    public void testGetRecords()
            throws Exception
    {
        TableHandle tableHandle = getTableHandle(table);
        ConnectorTableMetadata tableMetadata = metadata.getTableMetadata(tableHandle);
        List<ColumnHandle> columnHandles = ImmutableList.copyOf(metadata.getColumnHandles(tableHandle).values());
        Map<String, Integer> columnIndex = indexColumns(columnHandles);

        PartitionResult partitionResult = splitManager.getPartitions(tableHandle, TupleDomain.all());
        List<Split> splits = getAllSplits(splitManager.getPartitionSplits(tableHandle, partitionResult.getPartitions()));

        long rowNumber = 0;
        for (Split split : splits) {
            CassandraSplit cassandraSplit = (CassandraSplit) split;

            long completedBytes = 0;
            try (RecordCursor cursor = recordSetProvider.getRecordSet(cassandraSplit, columnHandles).cursor()) {
                while (cursor.advanceNextPosition()) {
                    try {
                        assertReadFields(cursor, tableMetadata.getColumns());
                    }
                    catch (RuntimeException e) {
                        throw new RuntimeException("row " + rowNumber, e);
                    }
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    @Test
    public void getTableMetadata()
    {
        // known table
        ConnectorTableMetadata tableMetadata = metadata.getTableMetadata(NUMBERS_TABLE_HANDLE);
        assertEquals(tableMetadata.getTable(), new SchemaTableName("example", "numbers"));
        assertEquals(tableMetadata.getColumns(), ImmutableList.of(
                new ColumnMetadata("text", STRING, 0, false),
                new ColumnMetadata("value", ColumnType.LONG, 1, false)));

        // unknown tables should produce null
        assertNull(metadata.getTableMetadata(new ExampleTableHandle(CONNECTOR_ID, "unknown", "unknown")));
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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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    public Map<SchemaTableName, List<ColumnMetadata>> listTableColumns(SchemaTablePrefix prefix)
    {
        checkNotNull(prefix, "prefix is null");
        ImmutableMap.Builder<SchemaTableName, List<ColumnMetadata>> columns = ImmutableMap.builder();
        for (SchemaTableName tableName : listTables(prefix)) {
            ConnectorTableMetadata tableMetadata = getTableMetadata(tableName);
            // table can disappear during listing operation
            if (tableMetadata != null) {
                columns.put(tableName, tableMetadata.getColumns());
            }
        }
        return columns.build();
    }
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        ExampleTable table = exampleClient.getTable(tableName.getSchemaName(), tableName.getTableName());
        if (table == null) {
            return null;
        }

        return new ConnectorTableMetadata(tableName, table.getColumnsMetadata());
    }
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    @Test
    public void testGetRecords()
            throws Exception
    {
        ConnectorTableHandle tableHandle = getTableHandle(table);
        ConnectorTableMetadata tableMetadata = metadata.getTableMetadata(tableHandle);
        List<ConnectorColumnHandle> columnHandles = ImmutableList.copyOf(metadata.getColumnHandles(tableHandle).values());
        Map<String, Integer> columnIndex = indexColumns(columnHandles);

        ConnectorPartitionResult partitionResult = splitManager.getPartitions(tableHandle, TupleDomain.<ConnectorColumnHandle>all());
        List<ConnectorSplit> splits = getAllSplits(splitManager.getPartitionSplits(tableHandle, partitionResult.getPartitions()));

        long rowNumber = 0;
        for (ConnectorSplit split : splits) {
            CassandraSplit cassandraSplit = (CassandraSplit) split;

            long completedBytes = 0;
            try (RecordCursor cursor = recordSetProvider.getRecordSet(cassandraSplit, columnHandles).cursor()) {
                while (cursor.advanceNextPosition()) {
                    try {
                        assertReadFields(cursor, tableMetadata.getColumns());
                    }
                    catch (RuntimeException e) {
                        throw new RuntimeException("row " + rowNumber, e);
                    }
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    }

    @Override
    public TableMetadata getTableMetadata(TableHandle tableHandle)
    {
        ConnectorTableMetadata tableMetadata = lookupConnectorFor(tableHandle).getMetadata().getTableMetadata(tableHandle);
        return new TableMetadata(getConnectorId(tableHandle), tableMetadata);
    }
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        // 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);

        // write the records
        RecordSink sink = client.getRecordSink(outputHandle);
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    @SuppressWarnings({"ValueOfIncrementOrDecrementUsed", "UnusedAssignment"})
    @Test
    public void testGetTableSchema()
            throws Exception
    {
        ConnectorTableMetadata tableMetadata = metadata.getTableMetadata(getTableHandle(table));
        Map<String, ColumnMetadata> map = uniqueIndex(tableMetadata.getColumns(), columnNameGetter());

        int i = 0;
        assertPrimitiveField(map, i++, "t_string", VARCHAR, false);
        assertPrimitiveField(map, i++, "t_tinyint", BIGINT, false);
        assertPrimitiveField(map, i++, "t_smallint", BIGINT, false);
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    @Test
    public void testGetTableSchemaUnpartitioned()
            throws Exception
    {
        ConnectorTableHandle tableHandle = getTableHandle(tableUnpartitioned);
        ConnectorTableMetadata tableMetadata = metadata.getTableMetadata(tableHandle);
        Map<String, ColumnMetadata> map = uniqueIndex(tableMetadata.getColumns(), columnNameGetter());

        assertPrimitiveField(map, 0, "t_string", VARCHAR, false);
        assertPrimitiveField(map, 1, "t_tinyint", BIGINT, false);
    }
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Related Classes of com.facebook.presto.spi.ConnectorTableMetadata

  • com.facebook.presto.cassandra.CassandraMetadata
  • com.facebook.presto.cassandra.TestCassandraConnector
  • com.facebook.presto.connector.dual.DualMetadata
  • com.facebook.presto.connector.informationSchema.InformationSchemaMetadata
  • com.facebook.presto.connector.jmx.JmxTableHandle
  • com.facebook.presto.connector.system.SystemTablesMetadata
  • com.facebook.presto.example.ExampleMetadata
  • com.facebook.presto.example.TestExampleMetadata
  • com.facebook.presto.hive.AbstractTestHiveClient
  • com.facebook.presto.hive.AbstractTestHiveClientS3
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