Package org.apache.cassandra.cql3

Class Constants.Literal

java.lang.Object

org.apache.cassandra.cql3.Term.Raw

org.apache.cassandra.cql3.Constants.Literal

All Implemented Interfaces:

AssignmentTestable

Enclosing class:

Constants

public static class Constants.Literal
extends Term.Raw

Nested Class Summary

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

AssignmentTestable.TestResult

Method Summary

Modifier and Type	Method	Description
static Constants.Literal	bool(java.lang.String text)
static Constants.Literal	duration(java.lang.String text)
static Constants.Literal	floatingPoint(java.lang.String text)
AbstractType<?>	getCompatibleTypeIfKnown(java.lang.String keyspace)
AbstractType<?>	getExactTypeIfKnown(java.lang.String keyspace)	The type of the term if it can be infered.
java.lang.String	getRawText()
java.lang.String	getText()
static Constants.Literal	hex(java.lang.String text)
static Constants.Literal	integer(java.lang.String text)
Constants.Value	prepare(java.lang.String keyspace, ColumnSpecification receiver)	This method validates this RawTerm is valid for provided column specification and "prepare" this RawTerm, returning the resulting prepared Term.
static Constants.Literal	string(java.lang.String text)
AssignmentTestable.TestResult	testAssignment(java.lang.String keyspace, ColumnSpecification receiver)
static Constants.Literal	uuid(java.lang.String text)

Methods inherited from class org.apache.cassandra.cql3.Term.Raw

equals, hashCode, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Method Detail

string

public static Constants.Literal string(java.lang.String text)

integer

public static Constants.Literal integer(java.lang.String text)

floatingPoint

public static Constants.Literal floatingPoint(java.lang.String text)

uuid

public static Constants.Literal uuid(java.lang.String text)

bool

public static Constants.Literal bool(java.lang.String text)

hex

public static Constants.Literal hex(java.lang.String text)

duration

public static Constants.Literal duration(java.lang.String text)

prepare

public Constants.Value prepare(java.lang.String keyspace,
                               ColumnSpecification receiver)
                        throws InvalidRequestException

Description copied from class: Term.Raw

This method validates this RawTerm is valid for provided column specification and "prepare" this RawTerm, returning the resulting prepared Term.

Specified by:

prepare in class Term.Raw

receiver - the "column" this RawTerm is supposed to be a value of. Note that the ColumnSpecification may not correspond to a real column in the case this RawTerm describe a list index or a map key, etc...

Returns:

the prepared term.

Throws:

InvalidRequestException

testAssignment

public AssignmentTestable.TestResult testAssignment(java.lang.String keyspace,
                                                    ColumnSpecification receiver)

Returns:

whether this object can be assigned to the provided receiver. We distinguish between 3 values: - EXACT_MATCH if this object is exactly of the type expected by the receiver - WEAKLY_ASSIGNABLE if this object is not exactly the expected type but is assignable nonetheless - NOT_ASSIGNABLE if it's not assignable Most caller should just call the isAssignable() method on the result, though functions have a use for testing "strong" equality to decide the most precise overload to pick when multiple could match.

getExactTypeIfKnown

public AbstractType<?> getExactTypeIfKnown(java.lang.String keyspace)

Description copied from class: Term.Raw

The type of the term if it can be infered.

Specified by:

getExactTypeIfKnown in class Term.Raw

Parameters:

keyspace - the keyspace on which the statement containing this term is on.

Returns:

the type of this Term if inferrable, or null otherwise (for instance, the type isn't inferrable 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).

getCompatibleTypeIfKnown

public AbstractType<?> getCompatibleTypeIfKnown(java.lang.String keyspace)

Specified by:

getCompatibleTypeIfKnown in interface AssignmentTestable

Overrides:

getCompatibleTypeIfKnown in class Term.Raw

Returns:

A data type that can represent this, or null if we can't determine that type. The returned type won't necessarely be the exact type, but one that is compatible with it.

getRawText

public java.lang.String getRawText()

getText

public java.lang.String getText()

Specified by:

getText in class Term.Raw

Returns:

a String representation of the raw term that can be used when reconstructing a CQL query string.