org.apache.cassandra.cql3.selection

Class Selectable.WithFieldSelection

java.lang.Object

org.apache.cassandra.cql3.selection.Selectable.WithFieldSelection

All Implemented Interfaces:

AssignmentTestable, Selectable

Enclosing interface:

Selectable

public static class Selectable.WithFieldSelection
extends java.lang.Object
implements Selectable

Represents the selection of the field of a UDT (eg. t.f).

Nested Class Summary

Nested Classes

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

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

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

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

AssignmentTestable.TestResult

Field Summary

Fields

Modifier and Type	Field and Description
FieldIdentifier	field
Selectable	selected

Constructor Summary

Constructors

Constructor and Description
WithFieldSelection(Selectable selected, FieldIdentifier field)

Method Summary

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

Field Detail

selected

public final Selectable selected

field

public final FieldIdentifier field

Constructor Detail

WithFieldSelection

public WithFieldSelection(Selectable selected,
                          FieldIdentifier field)

Method Detail

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

newSelectorFactory

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

Specified by:

newSelectorFactory in interface Selectable

getExactTypeIfKnown

public AbstractType<?> getExactTypeIfKnown(java.lang.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(java.util.function.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.