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

Class StringBuilderAttributeConverter

java.lang.Object

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

All Implemented Interfaces:

AttributeConverter<StringBuilder>

@ThreadSafe
 @Immutable
public final class StringBuilderAttributeConverter
extends Object
implements AttributeConverter<StringBuilder>

A converter between StringBuffer and AttributeValue.

This stores values in DynamoDB as a string.

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

Field Summary

Fields

Modifier and Type	Field and Description
static StringAttributeConverter	STRING_CONVERTER

Constructor Summary

Constructors

Constructor and Description
StringBuilderAttributeConverter()

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 StringBuilderAttributeConverter	create()
AttributeValue	transformFrom(StringBuilder input) Convert the provided Java object into an AttributeValue.
StringBuilder	transformTo(AttributeValue input) Convert the provided AttributeValue into a Java object.
EnhancedType<StringBuilder>	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

Field Detail

STRING_CONVERTER

public static final StringAttributeConverter STRING_CONVERTER

Constructor Detail

StringBuilderAttributeConverter

public StringBuilderAttributeConverter()

Method Detail

create

public static StringBuilderAttributeConverter create()

type

public EnhancedType<StringBuilder> type()

Description copied from interface: AttributeConverter

The type supported by this converter.

Specified by:

type in interface AttributeConverter<StringBuilder>

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<StringBuilder>

transformFrom

public AttributeValue transformFrom(StringBuilder 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<StringBuilder>

transformTo

public StringBuilder 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<StringBuilder>