Class Items

java.lang.Object

com.codename1.backend.dynamo.Items

public final class Items
extends Object

Converts between DynamoDB attribute values and plain Java values.

Java	DynamoDB
null	NULL
String	S
Number	N
Boolean	BOOL
byte[]	B
List	L
Map with string keys	M

Sets are read as lists (SS, NS and BS all decode to a List). A number is read back as a Long when it is integral and fits, and as a Double otherwise: a DynamoDB number has 38 digits of precision and this runtime has no BigDecimal, so a caller that needs more than a double holds reads the raw attribute map instead.

Method Summary

Modifier and Type	Method	Description
static Object	fromAttribute(Map av)	One attribute value as a plain value.
static Map	fromAttributes(Map attributes)	The plain values of an attribute map; null for null.
static Map	toAttribute(Object value)	One plain value as an attribute value.
static Map	toAttributes(Map item)	The attribute map of an item made of plain values.

Methods inherited from class Object

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

Method Details

toAttributes

public static Map toAttributes(Map item)

The attribute map of an item made of plain values.

toAttribute

public static Map toAttribute(Object value)

One plain value as an attribute value.

fromAttributes

public static Map fromAttributes(Map attributes)

The plain values of an attribute map; null for null.

fromAttribute

public static Object fromAttribute(Map av)

One attribute value as a plain value.