org.apache.cassandra.cql3

Class MultiColumnRelation

java.lang.Object

org.apache.cassandra.cql3.Relation

org.apache.cassandra.cql3.MultiColumnRelation

public class MultiColumnRelation
extends Relation

A relation using the tuple notation, which typically affects multiple columns. Examples: - SELECT ... WHERE (a, b, c) > (1, 'a', 10) - SELECT ... WHERE (a, b, c) IN ((1, 2, 3), (4, 5, 6)) - SELECT ... WHERE (a, b) < ? - SELECT ... WHERE (a, b) IN ?

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.cassandra.cql3.Relation

Relation.Type

Field Summary

Fields inherited from class org.apache.cassandra.cql3.Relation

relationType

Method Summary

Methods

Modifier and Type	Method and Description
static MultiColumnRelation	createInRelation(java.util.List<ColumnIdentifier.Raw> entities, java.util.List<? extends Term.MultiColumnRaw> inValues) Creates a multi-column IN relation with a list of IN values or markers.
static MultiColumnRelation	createNonInRelation(java.util.List<ColumnIdentifier.Raw> entities, Relation.Type relationType, Term.MultiColumnRaw valuesOrMarker) Creates a multi-column EQ, LT, LTE, GT, or GTE relation.
static MultiColumnRelation	createSingleMarkerInRelation(java.util.List<ColumnIdentifier.Raw> entities, Tuples.INRaw inMarker) Creates a multi-column IN relation with a marker for the IN values.
java.util.List<ColumnIdentifier.Raw>	getEntities()
Tuples.INRaw	getInMarker() For IN relations, returns the single marker for the IN values if there is one, otherwise null.
java.util.List<? extends Term.MultiColumnRaw>	getInValues() For IN relations, returns the list of Tuples.Literal instances or Tuples.Raw markers.
Term.MultiColumnRaw	getValue() For non-IN relations, returns the Tuples.Literal or Tuples.Raw marker for a single tuple.
boolean	isMultiColumn()
java.lang.String	toString()

Methods inherited from class org.apache.cassandra.cql3.Relation

isOnToken, operator

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

createNonInRelation

public static MultiColumnRelation createNonInRelation(java.util.List<ColumnIdentifier.Raw> entities,
                                      Relation.Type relationType,
                                      Term.MultiColumnRaw valuesOrMarker)

Creates a multi-column EQ, LT, LTE, GT, or GTE relation. For example: "SELECT ... WHERE (a, b) > (0, 1)"

Parameters:

entities - the columns on the LHS of the relation

relationType - the relation operator

valuesOrMarker - a Tuples.Literal instance or a Tuples.Raw marker

createInRelation

public static MultiColumnRelation createInRelation(java.util.List<ColumnIdentifier.Raw> entities,
                                   java.util.List<? extends Term.MultiColumnRaw> inValues)

Creates a multi-column IN relation with a list of IN values or markers. For example: "SELECT ... WHERE (a, b) IN ((0, 1), (2, 3))"

Parameters:

entities - the columns on the LHS of the relation

inValues - a list of Tuples.Literal instances or a Tuples.Raw markers

createSingleMarkerInRelation

public static MultiColumnRelation createSingleMarkerInRelation(java.util.List<ColumnIdentifier.Raw> entities,
                                               Tuples.INRaw inMarker)

Creates a multi-column IN relation with a marker for the IN values. For example: "SELECT ... WHERE (a, b) IN ?"

Parameters:

entities - the columns on the LHS of the relation

inMarker - a single IN marker

getEntities

public java.util.List<ColumnIdentifier.Raw> getEntities()

getValue

public Term.MultiColumnRaw getValue()

For non-IN relations, returns the Tuples.Literal or Tuples.Raw marker for a single tuple.

getInValues

public java.util.List<? extends Term.MultiColumnRaw> getInValues()

For IN relations, returns the list of Tuples.Literal instances or Tuples.Raw markers. If a single IN marker was used, this will return null;

getInMarker

public Tuples.INRaw getInMarker()

For IN relations, returns the single marker for the IN values if there is one, otherwise null.

isMultiColumn

public boolean isMultiColumn()

Specified by:

isMultiColumn in class Relation

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object