Package io.deephaven.api

Interface JoinMatch

All Known Implementing Classes:

ColumnName, MatchPair

public interface JoinMatch

A join match represents one column from a left table and one column from a right table. The exact semantics of the match depend on context. For example, a natural-join has equal-to matches; where-not-in has not-equal-to matches; and as-of-join's last match has less-than or less-than-or-equal-to matches.

See Also:

• TableOperations.join(Object, Collection, Collection, int)
• TableOperations.naturalJoin(Object, Collection, Collection)
• TableOperations.exactJoin(Object, Collection, Collection)
• TableOperations.asOfJoin(Object, Collection, AsOfJoinMatch, Collection)
• TableOperations.whereIn(Object, Collection)
• TableOperations.whereNotIn(Object, Collection)

Method Summary

Modifier and Type	Method	Description
static List<JoinMatch>	from(String... values)
static List<JoinMatch>	from(Collection<String> values)
ColumnName	left()	The column from the left table.
static Collection<ColumnName>	lefts(Collection<? extends JoinMatch> matches)
static JoinMatch	of(ColumnName left, ColumnName right)
static JoinMatch	parse(String x)
ColumnName	right()	The column name from the right table.
static Collection<ColumnName>	rights(Collection<? extends JoinMatch> matches)

Method Details

lefts

static Collection<ColumnName> lefts(Collection<? extends JoinMatch> matches)

rights

static Collection<ColumnName> rights(Collection<? extends JoinMatch> matches)

of

static JoinMatch of(ColumnName left,
 ColumnName right)

parse

static JoinMatch parse(String x)

from

static List<JoinMatch> from(String... values)

from

static List<JoinMatch> from(Collection<String> values)

left

ColumnName left()

The column from the left table.

Returns:

the left column name

right

ColumnName right()

The column name from the right table.

Returns:

the right column name