software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute

Class FloatAttributeConverter

java.lang.Object

software.amazon.awssdk.enhanced.dynamodb.internal.converter.attribute.FloatAttributeConverter

All Implemented Interfaces:

AttributeConverter<Float>, PrimitiveConverter<Float>

@ThreadSafe
 @Immutable
public final class FloatAttributeConverter
extends Object
implements AttributeConverter<Float>, PrimitiveConverter<Float>

A converter between Float and AttributeValue.

This stores values in DynamoDB as a number.

This supports converting numbers stored in DynamoDB into a single-precision floating point number, within the range Float.MIN_VALUE, Float.MAX_VALUE. For more precision or larger values, consider using DoubleAttributeConverter or BigDecimalAttributeConverter.

If values are known to be whole numbers, it is recommended to use a perfect-precision whole number representation like those provided by ShortAttributeConverter, IntegerAttributeConverter or BigIntegerAttributeConverter.

This can be created via create().

Method Summary

Modifier and Type	Method and Description
AttributeValueType	attributeValueType() The AttributeValueType that a converter stores and reads values from DynamoDB via the AttributeValue class.
static FloatAttributeConverter	create()
EnhancedType<Float>	primitiveType() The type supported by this converter.
AttributeValue	transformFrom(Float input) Convert the provided Java object into an AttributeValue.
Float	transformTo(AttributeValue input) Convert the provided AttributeValue into a Java object.
EnhancedType<Float>	type() The type supported by this converter.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static FloatAttributeConverter create()

type

public EnhancedType<Float> type()

Description copied from interface: AttributeConverter

The type supported by this converter.

Specified by:

type in interface AttributeConverter<Float>

attributeValueType

public AttributeValueType attributeValueType()

Description copied from interface: AttributeConverter

The AttributeValueType that a converter stores and reads values from DynamoDB via the AttributeValue class.

Specified by:

attributeValueType in interface AttributeConverter<Float>

transformFrom

public AttributeValue transformFrom(Float input)

Description copied from interface: AttributeConverter

Convert the provided Java object into an AttributeValue. This will raise a RuntimeException if the conversion fails, or the input is null.

Example:

 
 InstantAsStringAttributeConverter converter = InstantAsStringAttributeConverter.create();
 assertEquals(converter.transformFrom(Instant.EPOCH),
              EnhancedAttributeValue.fromString("1970-01-01T00:00:00Z").toAttributeValue());
 
 

Specified by:

transformFrom in interface AttributeConverter<Float>

transformTo

public Float transformTo(AttributeValue input)

Description copied from interface: AttributeConverter

Convert the provided AttributeValue into a Java object. This will raise a RuntimeException if the conversion fails, or the input is null.

 Example:
 {@code
 InstantAsStringAttributeConverter converter = InstantAsStringAttributeConverter.create();
 assertEquals(converter.transformTo(EnhancedAttributeValue.fromString("1970-01-01T00:00:00Z").toAttributeValue()),
              Instant.EPOCH);
 

Specified by:

transformTo in interface AttributeConverter<Float>

primitiveType

public EnhancedType<Float> primitiveType()

Description copied from interface: PrimitiveConverter

The type supported by this converter.

Specified by:

primitiveType in interface PrimitiveConverter<Float>