org.apache.cassandra.db.marshal

Class FloatType

java.lang.Object

org.apache.cassandra.db.marshal.AbstractType<java.lang.Float>

org.apache.cassandra.db.marshal.FloatType

All Implemented Interfaces:

java.util.Comparator<java.nio.ByteBuffer>, AssignmentTestable

public class FloatType
extends AbstractType<java.lang.Float>

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.cassandra.db.marshal.AbstractType

AbstractType.ComparisonType

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

AssignmentTestable.TestResult

Field Summary

Fields

Modifier and Type	Field and Description
static FloatType	instance

Fields inherited from class org.apache.cassandra.db.marshal.AbstractType

comparisonType, isByteOrderComparable, reverseComparator

Method Summary

Modifier and Type	Method and Description
CQL3Type	asCQL3Type()
int	compareCustom(java.nio.ByteBuffer o1, java.nio.ByteBuffer o2) Implement IFF ComparisonType is CUSTOM Compares the ByteBuffer representation of two instances of this class, for types where this cannot be done by simple in-order comparison of the unsigned bytes Standard Java compare semantics
Term	fromJSONObject(java.lang.Object parsed) Given a parsed JSON string, return a byte representation of the object.
java.nio.ByteBuffer	fromString(java.lang.String source) get a byte representation of the given string.
TypeSerializer<java.lang.Float>	getSerializer()
boolean	isEmptyValueMeaningless() Returns true for types where empty should be handled like null like Int32Type.
java.lang.String	toJSONString(java.nio.ByteBuffer buffer, ProtocolVersion protocolVersion) Converts the specified value into its JSON representation.
protected int	valueLengthIfFixed() The length of values for this type if all values are of fixed length, -1 otherwise.

Methods inherited from class org.apache.cassandra.db.marshal.AbstractType

asCQLTypeStringList, checkComparable, compare, compareCollectionMembers, compareForCQL, componentsCount, compose, decompose, equals, freeze, freezeNestedMulticellTypes, getComponents, getString, getString, isCollection, isCompatibleWith, isCounter, isFreezable, isFrozenCollection, isMultiCell, isReversed, isTuple, isUDT, isValueCompatibleWith, isValueCompatibleWithInternal, parseDefaultParameters, readValue, readValue, referencesDuration, referencesUserType, skipValue, testAssignment, toString, toString, validate, validateCellValue, validateCollectionMember, writeValue, writtenLength

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Field Detail

instance

public static final FloatType instance

Method Detail

isEmptyValueMeaningless

public boolean isEmptyValueMeaningless()

Description copied from class: AbstractType

Returns true for types where empty should be handled like null like Int32Type.

Overrides:

isEmptyValueMeaningless in class AbstractType<java.lang.Float>

compareCustom

public int compareCustom(java.nio.ByteBuffer o1,
                         java.nio.ByteBuffer o2)

Description copied from class: AbstractType

Implement IFF ComparisonType is CUSTOM Compares the ByteBuffer representation of two instances of this class, for types where this cannot be done by simple in-order comparison of the unsigned bytes Standard Java compare semantics

Overrides:

compareCustom in class AbstractType<java.lang.Float>

fromString

public java.nio.ByteBuffer fromString(java.lang.String source)
                               throws MarshalException

Description copied from class: AbstractType

get a byte representation of the given string.

Specified by:

fromString in class AbstractType<java.lang.Float>

Throws:

MarshalException

fromJSONObject

public Term fromJSONObject(java.lang.Object parsed)
                    throws MarshalException

Description copied from class: AbstractType

Given a parsed JSON string, return a byte representation of the object.

Specified by:

fromJSONObject in class AbstractType<java.lang.Float>

Parameters:

parsed - the result of parsing a json string

Throws:

MarshalException

toJSONString

public java.lang.String toJSONString(java.nio.ByteBuffer buffer,
                                     ProtocolVersion protocolVersion)

Description copied from class: AbstractType

Converts the specified value into its JSON representation.

The buffer position will stay the same.

Overrides:

toJSONString in class AbstractType<java.lang.Float>

Parameters:

buffer - the value to convert

protocolVersion - the protocol version to use for the conversion

Returns:

a JSON string representing the specified value

asCQL3Type

public CQL3Type asCQL3Type()

Overrides:

asCQL3Type in class AbstractType<java.lang.Float>

getSerializer

public TypeSerializer<java.lang.Float> getSerializer()

Specified by:

getSerializer in class AbstractType<java.lang.Float>

valueLengthIfFixed

protected int valueLengthIfFixed()

Description copied from class: AbstractType

The length of values for this type if all values are of fixed length, -1 otherwise.

Overrides:

valueLengthIfFixed in class AbstractType<java.lang.Float>