org.apache.cassandra.cql3.restrictions

Class TokenRestriction

java.lang.Object

org.apache.cassandra.cql3.restrictions.TokenRestriction

Direct Known Subclasses:

TokenRestriction.EQRestriction, TokenRestriction.SliceRestriction

public abstract class TokenRestriction
extends java.lang.Object

Restriction using the token function.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	TokenRestriction.EQRestriction
static class	TokenRestriction.SliceRestriction

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.List<ColumnMetadata>	columnDefs The definition of the columns to which apply the token restriction.
protected TableMetadata	metadata

Constructor Summary

Constructors

Constructor and Description
TokenRestriction(TableMetadata metadata, java.util.List<ColumnMetadata> columnDefs) Creates a new TokenRestriction that apply to the specified columns.

Method Summary

Modifier and Type	Method and Description
void	addRowFilterTo(RowFilter filter, IndexRegistry indexRegistry, QueryOptions options) Adds to the specified row filter the expressions corresponding to this Restriction.
java.util.List<java.nio.ByteBuffer>	bounds(Bound b, QueryOptions options)
protected abstract org.apache.cassandra.cql3.restrictions.PartitionKeyRestrictions	doMergeWith(TokenRestriction otherRestriction) Merges this restriction with the specified TokenRestriction.
java.util.List<ColumnMetadata>	getColumnDefs() Returns the column definitions in position order.
protected java.lang.String	getColumnNamesAsString() Returns the column names as a comma separated String.
ColumnMetadata	getFirstColumn() Returns the definition of the first column.
ColumnMetadata	getLastColumn() Returns the definition of the last column.
java.util.Set<Restriction>	getRestrictions(ColumnMetadata columnDef) Returns the restrictions applied to the specified column.
boolean	hasBound(Bound b) Checks if the specified bound is set or not.
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	hasSupportingIndex(IndexRegistry indexRegistry) Check if the restriction is on indexed columns.
boolean	hasUnrestrictedPartitionKeyComponents(TableMetadata table) Checks if the partition key has unrestricted components.
boolean	isEmpty() Checks if this Restrictions is empty or not.
boolean	isInclusive(Bound b) Checks if the specified bound is inclusive or not.
boolean	isOnToken()
org.apache.cassandra.cql3.restrictions.PartitionKeyRestrictions	mergeWith(Restriction otherRestriction)
boolean	needFiltering(TableMetadata table) checks if specified restrictions require filtering
int	size() Returns the number of columns that have a restriction.
java.util.List<java.nio.ByteBuffer>	values(QueryOptions options)

Methods inherited from class java.lang.Object

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

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

hasContains

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

addFunctionsTo

Field Detail

columnDefs

protected final java.util.List<ColumnMetadata> columnDefs

The definition of the columns to which apply the token restriction.

metadata

protected final TableMetadata metadata

Constructor Detail

TokenRestriction

public TokenRestriction(TableMetadata metadata,
                        java.util.List<ColumnMetadata> columnDefs)

Creates a new TokenRestriction that apply to the specified columns.

Parameters:

columnDefs - the definition of the columns to which apply the token restriction

Method Detail

hasIN

public boolean hasIN()

Description copied from interface: Restrictions

Checks if any of the underlying restriction is an IN.

Returns:

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

hasOnlyEqualityRestrictions

public boolean hasOnlyEqualityRestrictions()

Description copied from interface: Restrictions

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

getRestrictions

public java.util.Set<Restriction> getRestrictions(ColumnMetadata columnDef)

Description copied from interface: Restrictions

Returns the restrictions applied to the specified column.

Parameters:

columnDef - the column definition

Returns:

the restrictions applied to the specified column

isOnToken

public final boolean isOnToken()

needFiltering

public boolean needFiltering(TableMetadata table)

checks if specified restrictions require filtering

Parameters:

table - column family metadata

Returns:

true if filtering is required, false otherwise

hasSlice

public boolean hasSlice()

Description copied from interface: Restrictions

Checks if any of the underlying restrictions is a slice.

Returns:

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

hasUnrestrictedPartitionKeyComponents

public boolean hasUnrestrictedPartitionKeyComponents(TableMetadata table)

Checks if the partition key has unrestricted components.

Parameters:

table - column family metadata

Returns:

true if the partition key has unrestricted components, false otherwise.

getColumnDefs

public java.util.List<ColumnMetadata> getColumnDefs()

Description copied from interface: Restriction

Returns the column definitions in position order.

Returns:

the column definitions in position order.

getFirstColumn

public ColumnMetadata getFirstColumn()

Description copied from interface: Restriction

Returns the definition of the first column.

Returns:

the definition of the first column.

getLastColumn

public ColumnMetadata getLastColumn()

Description copied from interface: Restriction

Returns the definition of the last column.

Returns:

the definition of the last column.

hasSupportingIndex

public boolean hasSupportingIndex(IndexRegistry indexRegistry)

Description copied from interface: Restriction

Check if the restriction is on indexed columns.

Parameters:

indexRegistry - the index registry

Returns:

true if the restriction is on indexed columns, false

addRowFilterTo

public void addRowFilterTo(RowFilter filter,
                           IndexRegistry indexRegistry,
                           QueryOptions options)

Description copied from interface: Restriction

Adds to the specified row filter the expressions corresponding to this Restriction.

Parameters:

filter - the row filter to add expressions to

indexRegistry - the index registry

options - the query options

isEmpty

public final boolean isEmpty()

Description copied from interface: Restrictions

Checks if this Restrictions is empty or not.

Returns:

true if this Restrictions is empty, false otherwise.

size

public final int size()

Description copied from interface: Restrictions

Returns the number of columns that have a restriction.

Returns:

the number of columns that have a restriction.

getColumnNamesAsString

protected final java.lang.String getColumnNamesAsString()

Returns the column names as a comma separated String.

Returns:

the column names as a comma separated String.

mergeWith

public final org.apache.cassandra.cql3.restrictions.PartitionKeyRestrictions mergeWith(Restriction otherRestriction)
                                                                                throws InvalidRequestException

Throws:

InvalidRequestException

doMergeWith

protected abstract org.apache.cassandra.cql3.restrictions.PartitionKeyRestrictions doMergeWith(TokenRestriction otherRestriction)
                                                                                        throws InvalidRequestException

Merges this restriction with the specified TokenRestriction.

Parameters:

otherRestriction - the TokenRestriction to merge with.

Throws:

InvalidRequestException

values

public java.util.List<java.nio.ByteBuffer> values(QueryOptions options)

bounds

public java.util.List<java.nio.ByteBuffer> bounds(Bound b,
                                                  QueryOptions options)

hasBound

public boolean hasBound(Bound b)

Checks if the specified bound is set or not.

Parameters:

b - the bound type

Returns:

true if the specified bound is set, false otherwise

isInclusive

public boolean isInclusive(Bound b)

Checks if the specified bound is inclusive or not.

Parameters:

b - the bound type

Returns:

true if the specified bound is inclusive, false otherwise