Package io.deephaven.qst.table

Interface TableSpec

All Superinterfaces:

TableOperations<TableSpec,TableSpec>, TableOperationsDefaults<TableSpec,TableSpec>, TableSchema

All Known Subinterfaces:

InputTable, Join, SelectableTable, SingleParentTable

All Known Implementing Classes:

AggregateAllTable, AggregateTable, AsOfJoinTable, BlinkInputTable, ByTableBase, DropColumnsTable, EmptyTable, ExactJoinTable, HeadTable, InMemoryAppendOnlyInputTable, InMemoryKeyBackedInputTable, InputTableBase, JoinBase, JoinTable, LazyUpdateTable, MergeTable, MultiJoinTable, NaturalJoinTable, NewTable, RangeJoinTable, ReverseTable, SelectDistinctTable, SelectTable, SliceTable, SnapshotTable, SnapshotWhenTable, SortTable, TableBase, TailTable, TicketTable, TimeTable, UngroupTable, UpdateByTable, UpdateTable, UpdateViewTable, ViewTable, WhereInTable, WhereTable

public interface TableSpec
extends TableOperationsDefaults<TableSpec,TableSpec>, TableSchema

A table specification is a declarative description of a table query. Part of a "query syntax tree".

A table specification may be built-up explicitly via the individual implementation class build patterns, or may be built-up in a fluent-manner via the TableOperations interface.

A table specification can be "replayed" against the fluent interfaces, see TableCreator.create(TableCreator, TableToOperations, OperationsToTable, TableSpec).

See Also:

• TableCreator
• TableOperations

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	TableSpec.Visitor<T>

Field Summary

Fields inherited from interface io.deephaven.api.TableOperations

AGG_BY_PRESERVE_EMPTY_DEFAULT

Fields inherited from interface io.deephaven.api.TableOperationsDefaults

ZERO_LENGTH_COLUMNNAME_ARRAY, ZERO_LENGTH_FILTER_ARRAY

Method Summary

Modifier and Type	Method	Description
default int	depth()	The depth of the table is the maximum depth of its dependencies plus one.
static EmptyTable	empty(long size)
TableCreationLogic	logic()
static MergeTable	merge(TableSpec first, TableSpec second, TableSpec... rest)
static TableSpec	merge(Collection<? extends TableSpec> tables)
static TableSpec	of(TableCreationLogic logic)
static TicketTable	ticket(byte[] ticket)	Create a ticket table with the ticket bytes.
static TicketTable	ticket(String ticket)	Deprecated. prefer ticket(byte[])
<T> T	walk(TableSpec.Visitor<T> visitor)

Methods inherited from interface io.deephaven.api.TableOperations

aggAllBy, aggBy, asOfJoin, dropColumns, exactJoin, head, join, join, lazyUpdate, naturalJoin, rangeJoin, reverse, select, selectDistinct, selectDistinct, slice, snapshot, snapshotWhen, snapshotWhen, snapshotWhen, sort, tail, ungroup, update, updateBy, updateView, view, where, whereIn, whereNotIn

Methods inherited from interface io.deephaven.api.TableOperationsDefaults

absSumBy, absSumBy, absSumBy, absSumBy, aggAllBy, aggAllBy, aggAllBy, aggBy, aggBy, aggBy, aggBy, aggBy, aggBy, aggBy, aj, aj, avgBy, avgBy, avgBy, avgBy, countBy, countBy, countBy, countBy, dropColumns, dropColumns, exactJoin, exactJoin, firstBy, firstBy, firstBy, firstBy, groupBy, groupBy, groupBy, join, join, join, lastBy, lastBy, lastBy, lastBy, lazyUpdate, maxBy, maxBy, maxBy, maxBy, medianBy, medianBy, medianBy, medianBy, minBy, minBy, minBy, minBy, naturalJoin, naturalJoin, naturalJoin, naturalJoin, naturalJoin, raj, raj, rangeJoin, select, select, selectDistinct, sort, sortDescending, stdBy, stdBy, stdBy, stdBy, sumBy, sumBy, sumBy, sumBy, ungroup, ungroup, ungroup, ungroup, update, updateBy, updateBy, updateBy, updateBy, updateBy, updateBy, updateBy, updateBy, updateView, varBy, varBy, varBy, varBy, view, wavgBy, wavgBy, wavgBy, wavgBy, where, whereIn, whereNotIn, wsumBy, wsumBy, wsumBy, wsumBy

Methods inherited from interface io.deephaven.qst.table.TableSchema

walk

Method Details

empty

static EmptyTable empty(long size)

merge

static MergeTable merge(TableSpec first,
 TableSpec second,
 TableSpec... rest)

merge

static TableSpec merge(Collection<? extends TableSpec> tables)

of

static TableSpec of(TableCreationLogic logic)

ticket

@Deprecated
static TicketTable ticket(String ticket)

Deprecated.

prefer ticket(byte[])

Create a ticket table with the UTF-8 bytes from the ticket string.

Parameters:

ticket - the ticket

Returns:

the ticket table

ticket

static TicketTable ticket(byte[] ticket)

Create a ticket table with the ticket bytes.

Parameters:

ticket - the ticket

Returns:

the ticket table

logic

TableCreationLogic logic()

depth

@Derived
default int depth()

The depth of the table is the maximum depth of its dependencies plus one. A table with no dependencies has a depth of zero.

Returns:

the depth

walk

<T> T walk(TableSpec.Visitor<T> visitor)