Examples with TableHandler io.mycat.TableHandler used on opensource projects

Example 6 with TableHandler

use of io.mycat.TableHandler in project Mycat2 by MyCATApache.

the class MycatTableScan method implement.

@Override
public Result implement(MycatEnumerableRelImplementor implementor, Prefer pref) {
    final BlockBuilder builder = new BlockBuilder();
    final PhysType physType = PhysTypeImpl.of(implementor.getTypeFactory(), getRowType(), JavaRowFormat.ARRAY);
    ParameterExpression root = implementor.getRootExpression();
    TableScan tableScan = (TableScan) this.relNode;
    MycatLogicTable mycatLogicTable = (MycatLogicTable) tableScan.getTable().unwrap(AbstractMycatTable.class);
    TableHandler table = mycatLogicTable.getTable();
    Method getObservable = Types.lookupMethod(NewMycatDataContext.class, "getTableObservable", String.class, String.class);
    builder.add(Expressions.call(root, getObservable, Expressions.constant(table.getSchemaName()), Expressions.constant(table.getTableName())));
    return implementor.result(physType, builder.toBlock());
}

Example 7 with TableHandler

use of io.mycat.TableHandler in project Mycat2 by MyCATApache.

the class LocalTableScan method getMycatRelDataType.

@Override
public MycatRelDataType getMycatRelDataType() {
    MycatLogicTable mycatTable = getTable().unwrap(MycatLogicTable.class);
    TableHandler tableTable = mycatTable.getTable();
    List<MycatField> mycatFields = tableTable.getColumns().stream().map(c -> c.toMycatField()).collect(Collectors.toList());
    return MycatRelDataType.of(mycatFields);
}

Example 8 with TableHandler

use of io.mycat.TableHandler in project Mycat2 by MyCATApache.

the class MycatRouteUpdateCore method explainTerms.

public RelWriter explainTerms(RelWriter pw) {
    TableHandler table = MetaClusterCurrent.wrapper(MetadataManager.class).getTable(schemaName, tableName);
    pw.item("sql", sqlStatement + "\n");
    int index = 0;
    for (Partition partition : getDataNodes(table)) {
        pw.item("dataNodes$" + index, partition + "\n");
    }
    return pw;
}

Example 9 with TableHandler

use of io.mycat.TableHandler in project Mycat2 by MyCATApache.

the class VisualTablePlanImpl method execute.

@Override
public Observable<VectorSchemaRoot> execute(RootContext rootContext) {
    RelOptTable table = relNode.getRelNode().getTable();
    MycatLogicTable logicTable = table.unwrap(MycatLogicTable.class);
    TableHandler tableHandler = logicTable.getTable();
    VisualTableHandler visualTableHandler = (VisualTableHandler) tableHandler;
    MetadataManager metadataManager = MetaClusterCurrent.wrapper(MetadataManager.class);
    MycatRelDataType mycatRelDataTypeByCalcite = relNode.getMycatRelDataTypeByCalcite();
    Schema schema = toArrowSchema(mycatRelDataTypeByCalcite);
    return ValuesPlan.create(schema, MycatRxJavaUtl.blockingIterable(visualTableHandler.scanAll())).execute(rootContext);
}

Example 10 with TableHandler

use of io.mycat.TableHandler in project Mycat2 by MyCATApache.

the class PrototypeHandlerImpl method showCreateTable.

@Override
public List<Object[]> showCreateTable(SQLShowCreateTableStatement statement) {
    SQLPropertyExpr sqlPropertyExpr = (SQLPropertyExpr) statement.getName();
    String schemaName = SQLUtils.normalize(sqlPropertyExpr.getOwnerName());
    String tableName = SQLUtils.normalize(sqlPropertyExpr.getSimpleName());
    MetadataManager metadataManager = MetaClusterCurrent.wrapper(MetadataManager.class);
    TableHandler tableHandler = metadataManager.getTable(schemaName, tableName);
    String createTableSQL = tableHandler.getCreateTableSQL();
    ArrayList<Object[]> objects = new ArrayList<>();
    objects.add(new Object[] { tableName, createTableSQL });
    return objects;
}