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

Class StringBufferAttributeConverter

java.lang.Object

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

All Implemented Interfaces:

AttributeConverter<StringBuffer>

@ThreadSafe
@Immutable
public final class StringBufferAttributeConverter
extends Object
implements AttributeConverter<StringBuffer>

A converter between StringBuffer and AttributeValue.

This stores values in DynamoDB as a string.

This supports reading any DynamoDB attribute type into a string buffer.

Field Summary

Fields

Modifier and Type	Field	Description
static final StringAttributeConverter	STRING_CONVERTER

Constructor Summary

Constructors

Constructor	Description
StringBufferAttributeConverter()

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 StringBufferAttributeConverter	create()
AttributeValue	transformFrom(StringBuffer input)	Convert the provided Java object into an AttributeValue.
StringBuffer	transformTo(AttributeValue input)	Convert the provided AttributeValue into a Java object.
EnhancedType<StringBuffer>	type()	The type supported by this converter.

Methods inherited from class java.lang.Object

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

Field Details

STRING_CONVERTER

public static final StringAttributeConverter STRING_CONVERTER

Constructor Details

StringBufferAttributeConverter

public StringBufferAttributeConverter()

Method Details

create

public static StringBufferAttributeConverter create()

type

public EnhancedType<StringBuffer> type()

Description copied from interface: AttributeConverter

The type supported by this converter.

Specified by:

type in interface AttributeConverter<StringBuffer>

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<StringBuffer>

transformFrom

public AttributeValue transformFrom(StringBuffer 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<StringBuffer>

transformTo

public StringBuffer 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<StringBuffer>