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	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

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

Method Details

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:
 
 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>