Package org.apache.cassandra.cql3.restrictions

Interface Restrictions

All Superinterfaces:

Restriction

All Known Implementing Classes:

TokenRestriction, TokenRestriction.EQRestriction, TokenRestriction.SliceRestriction

public interface Restrictions
extends Restriction

Sets of restrictions

Method Summary

Modifier and Type	Method	Description
default Collection<ColumnMetadata>	getColumnDefinitions()	This method exists in addition to Restriction.getColumnDefs() in case implementations want to provide columns definitions that are not strictly in position order.
Set<Restriction>	getRestrictions(ColumnMetadata columnDef)	Returns the restrictions applied to the specified column.
boolean	hasContains()	Checks if any of the underlying restrictions is a CONTAINS / CONTAINS KEY restriction.
boolean	hasIN()	Checks if any of the underlying restriction is an IN.
boolean	hasOnlyEqualityRestrictions()	Checks if all of the underlying restrictions are EQ or IN restrictions.
boolean	hasSlice()	Checks if any of the underlying restrictions is a slice.
boolean	isEmpty()	Checks if this Restrictions is empty or not.
int	size()	Returns the number of columns that have a restriction.

Methods inherited from interface org.apache.cassandra.cql3.restrictions.Restriction

addFunctionsTo, addToRowFilter, findSupportingIndex, findSupportingIndexFromQueryPlan, getColumnDefs, getFirstColumn, getLastColumn, hasSupportingIndex, isOnToken, needsFiltering

Method Details

getRestrictions

Set<Restriction> getRestrictions(ColumnMetadata columnDef)

Returns the restrictions applied to the specified column.

Parameters:

columnDef - the column definition

Returns:

the restrictions applied to the specified column

getColumnDefinitions

default Collection<ColumnMetadata> getColumnDefinitions()

This method exists in addition to Restriction.getColumnDefs() in case implementations want to provide columns definitions that are not strictly in position order.

isEmpty

boolean isEmpty()

Checks if this Restrictions is empty or not.

Returns:

true if this Restrictions is empty, false otherwise.

size

int size()

Returns the number of columns that have a restriction.

Returns:

the number of columns that have a restriction.

hasIN

boolean hasIN()

Checks if any of the underlying restriction is an IN.

Returns:

true if any of the underlying restriction is an IN, false otherwise

hasContains

boolean hasContains()

Checks if any of the underlying restrictions is a CONTAINS / CONTAINS KEY restriction.

Returns:

true if any of the underlying restrictions is CONTAINS, false otherwise

hasSlice

boolean hasSlice()

Checks if any of the underlying restrictions is a slice.

Returns:

true if any of the underlying restrictions is a slice, false otherwise

hasOnlyEqualityRestrictions

boolean hasOnlyEqualityRestrictions()

Checks if all of the underlying restrictions are EQ or IN restrictions.

Returns:

true if all of the underlying restrictions are EQ or IN restrictions, false otherwise