Package org.apache.cassandra.cql3.selection

Class Selectable.WithElementSelection

java.lang.Object

org.apache.cassandra.cql3.selection.Selectable.WithElementSelection

All Implemented Interfaces:

AssignmentTestable, Selectable

Enclosing interface:

Selectable

public static class Selectable.WithElementSelection
extends Object
implements Selectable

Represents the selection of an element of a collection (eg. c[x]).

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	Selectable.WithElementSelection.Raw

Nested classes/interfaces inherited from interface org.apache.cassandra.cql3.AssignmentTestable

AssignmentTestable.TestResult

Nested classes/interfaces inherited from interface org.apache.cassandra.cql3.selection.Selectable

Selectable.BetweenParenthesesOrWithTuple, Selectable.RawIdentifier, Selectable.WithArrayLiteral, Selectable.WithCast, Selectable.WithElementSelection, Selectable.WithFieldSelection, Selectable.WithFunction, Selectable.WithList, Selectable.WithMapOrUdt, Selectable.WithSet, Selectable.WithSliceSelection, Selectable.WithTerm, Selectable.WithTypeHint, Selectable.WithVector, Selectable.WritetimeOrTTL

Field Summary

Fields

Modifier and Type	Field	Description
final Term.Raw	element
final Selectable	selected

Method Summary

Modifier and Type	Method	Description
AbstractType<?>	getExactTypeIfKnown(String keyspace)	The type of the Selectable if it can be infered.
Selector.Factory	newSelectorFactory(TableMetadata cfm, AbstractType<?> expectedType, List<ColumnMetadata> defs, VariableSpecifications boundNames)
boolean	selectColumns(Predicate<ColumnMetadata> predicate)	Checks if this Selectable select columns matching the specified predicate.
String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.cassandra.cql3.selection.Selectable

addAndGetIndex, getCompatibleTypeIfKnown, processesSelection, specForElementOrSlice, testAssignment

Field Details

selected

public final Selectable selected

element

public final Term.Raw element

Method Details

toString

public String toString()

Overrides:

toString in class Object

newSelectorFactory

public Selector.Factory newSelectorFactory(TableMetadata cfm,
 AbstractType<?> expectedType,
 List<ColumnMetadata> defs,
 VariableSpecifications boundNames)

Specified by:

newSelectorFactory in interface Selectable

getExactTypeIfKnown

public AbstractType<?> getExactTypeIfKnown(String keyspace)

Description copied from interface: Selectable

The type of the Selectable if it can be infered.

Specified by:

getExactTypeIfKnown in interface Selectable

Parameters:

keyspace - the keyspace on which the statement for which this is a Selectable is on.

Returns:

the type of this Selectable if inferrable, or null otherwise (for instance, the type isn't inferable for a bind marker. Even for literals, the exact type is not inferrable since they are valid for many different types and so this will return null too).

selectColumns

public boolean selectColumns(Predicate<ColumnMetadata> predicate)

Description copied from interface: Selectable

Checks if this Selectable select columns matching the specified predicate.

Specified by:

selectColumns in interface Selectable

Returns:

true if this Selectable select columns matching the specified predicate, false otherwise.