Item (AWS Java SDK for Amazon DynamoDB 1.12.73 API)

java.lang.Object
- com.amazonaws.services.dynamodbv2.document.Item

```
public class Item
extends Object
```
An item in DynamoDB. An item is a collection of attributes. Each attribute has a name and a value. An attribute value can be one of the followings:
- String
- Set<String>
- Number (including any subtypes and primitive types)
- Set<Number>
- byte[]
- Set<byte[]>
- ByteBuffer
- Set<ByteBuffer>
- Boolean or boolean
- null
- Map<String,T>, where T can be any type on this list but must not induce any circular reference
- List<T>, where T can be any type on this list but must not induce any circular reference
For an Item to be successfully persisted in DynamoDB, at a minimum the respective attributes for the primary key must be specified.

Constructor Summary

Constructors
Constructor and Description

Item()

Constructors
Constructor and Description
`Item()`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Map<String,Object>`	`asMap()` Returns all attributes of the current item as a map.
`Iterable<Map.Entry<String,Object>>`	`attributes()` Returns all attributes of the current item.
`Item`	`base64Decode(String... binaryAttrNames)` Utility method to decode the designated binary attributes from base-64 encoding; converting binary lists into binary sets.
`Item`	`convertListsToSets(String... listAttrNames)` Utility method to converts the designated attributes from `List` into `Set`, throwing `IllegalArgumentException` should there be duplicate elements.
`boolean`	`equals(Object in)`
`static Item`	`fromJSON(String json)` Convenient factory method - instantiates an `Item` from the given JSON string.
`static Item`	`fromMap(Map<String,Object> attributes)` Convenient factory method - instantiates an `Item` from the given map.
`Object`	`get(String attrName)` Returns the value of the specified attribute in the current item as an object; or null if the attribute either doesn't exist or the attribute value is null.
`BigInteger`	`getBigInteger(String attrName)` Returns the value of the specified attribute in the current item as an `BigInteger`; or null if the attribute doesn't exist.
`byte[]`	`getBinary(String attrName)` Returns the value of the specified attribute in the current item as a byte array; or null if the attribute either doesn't exist or the attribute value is null.
`Set<byte[]>`	`getBinarySet(String attrName)` Returns the value of the specified attribute in the current item as a set of byte arrays; or null if the attribute either doesn't exist or the attribute value is null.
`Boolean`	`getBOOL(String attrName)` Returns the value of the specified attribute in the current item as a non-null Boolean.
`boolean`	`getBoolean(String attrName)` Returns the value of the specified attribute in the current item as a primitive boolean.
`ByteBuffer`	`getByteBuffer(String attrName)` Returns the value of the specified attribute in the current item as a `ByteBuffer`; or null if the attribute either doesn't exist or the attribute value is null.
`Set<ByteBuffer>`	`getByteBufferSet(String attrName)` Returns the value of the specified attribute in the current item as a set of `ByteBuffer`; or null if the attribute either doesn't exist or the attribute value is null.
`double`	`getDouble(String attrName)` Returns the value of the specified attribute in the current item as a `double`.
`float`	`getFloat(String attrName)` Returns the value of the specified attribute in the current item as a `float`.
`int`	`getInt(String attrName)` Returns the value of the specified attribute in the current item as an `int`.
`String`	`getJSON(String attrName)` Returns the value of the specified attribute in the current item as a JSON string; or null if the attribute either doesn't exist or the attribute value is null.
`String`	`getJSONPretty(String attrName)` Returns the value of the specified attribute in the current item as a JSON string with pretty indentation; or null if the attribute either doesn't exist or the attribute value is null.
`<T> List<T>`	`getList(String attrName)` Returns the value of the specified attribute in the current item as a set of `T`'s.; or null if the attribute either doesn't exist or the attribute value is null.
`long`	`getLong(String attrName)` Returns the value of the specified attribute in the current item as an `long`.
`<T> Map<String,T>`	`getMap(String attrName)` Returns the value of the specified attribute in the current item as a map of string-to-`T`'s; or null if the attribute either doesn't exist or the attribute value is null.
`<T extends Number> Map<String,T>`	`getMapOfNumbers(String attrName, Class<T> valueType)` Convenient method to return the specified attribute in the current item as a (copy of) map of string-to-`T`'s where T must be a subclass of `Number`; or null if the attribute doesn't exist.
`BigDecimal`	`getNumber(String attrName)` Returns the value of the specified attribute in the current item as a `BigDecimal`; or null if the attribute either doesn't exist or the attribute value is null.
`Set<BigDecimal>`	`getNumberSet(String attrName)` Returns the value of the specified attribute in the current item as a set of BigDecimal's; or null if the attribute either doesn't exist or the attribute value is null.
`Map<String,Object>`	`getRawMap(String attrName)` Convenient method to return the value of the specified attribute in the current item as a map of string-to-`Object`'s; or null if the attribute either doesn't exist or the attribute value is null.
`short`	`getShort(String attrName)` Returns the value of the specified attribute in the current item as a `short`.
`String`	`getString(String attrName)` Returns the value of the specified attribute in the current item as a string; or null if the attribute either doesn't exist or the attribute value is null.
`Set<String>`	`getStringSet(String attrName)` Returns the value of the specified attribute in the current item as a set of strings; or null if the attribute either doesn't exist or the attribute value is null.
`Class<?>`	`getTypeOf(String attrName)` Returns the type of the specified attribute in the current item; or null if the attribute either doesn't exist or the attribute value is null.
`boolean`	`hasAttribute(String attrName)` Returns true if this item has the specified attribute; false otherwise.
`int`	`hashCode()`
`boolean`	`isNull(String attrName)` Returns true if the specified attribute exists with a null value; false otherwise.
`boolean`	`isPresent(String attrName)` Returns true if this item contains the specified attribute; false otherwise.
`int`	`numberOfAttributes()` Returns the number of attributes of this item.
`Item`	`removeAttribute(String attrName)` Removes the specified attribute from the current item.
`String`	`toJSON()` Returns this item as a JSON string.
`String`	`toJSONPretty()` Returns this item as a pretty JSON string.
`String`	`toString()`
`Item`	`with(String attrName, Object val)` Sets the value of the specified attribute to the given value.
`Item`	`withBigDecimalSet(String attrName, BigDecimal... vals)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withBigDecimalSet(String attrName, Set<BigDecimal> val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withBigInteger(String attrName, BigInteger val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withBinary(String attrName, byte[] val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withBinary(String attrName, ByteBuffer val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withBinarySet(String attrName, byte[]... vals)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withBinarySet(String attrName, ByteBuffer... vals)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withBinarySet(String attrName, Set<byte[]> val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withBoolean(String attrName, boolean val)` Sets the value of the specified attribute in the current item to the boolean value.
`Item`	`withByteBufferSet(String attrName, Set<ByteBuffer> val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withDouble(String attrName, double val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withFloat(String attrName, float val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withInt(String attrName, int val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withJSON(String attrName, String json)` Sets the value of the specified attribute in the current item to the given JSON document in the form of a string.
`Item`	`withKeyComponent(String keyAttrName, Object keyAttrValue)` Convenient methods - sets an attribute of this item for the specified key attribute name and value.
`Item`	`withKeyComponents(KeyAttribute... components)` Convenient methods - sets the attributes of this item from the specified key components.
`Item`	`withList(String attrName, List<?> val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withList(String attrName, Object... vals)` Sets the value of the specified attribute in the current item to the given values as a list.
`Item`	`withLong(String attrName, long val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withMap(String attrName, Map<String,?> val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withNull(String attrName)` Sets the value of the specified attribute to null.
`Item`	`withNumber(String attrName, BigDecimal val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withNumber(String attrName, Number val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withNumberSet(String attrName, Number... vals)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withNumberSet(String attrName, Set<Number> vals)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withPrimaryKey(PrimaryKey primaryKey)` Convenient methods - sets the attributes of this item from the given key attributes.
`Item`	`withPrimaryKey(String hashKeyName, Object hashKeyValue)` Convenient method to set the attributes of this item from the given hash-only primary key name and value.
`Item`	`withPrimaryKey(String hashKeyName, Object hashKeyValue, String rangeKeyName, Object rangeKeyValue)` Convenient method to set the attributes of this item from the given hash and range primary key.
`Item`	`withShort(String attrName, short val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withString(String attrName, String val)` Sets the value of the specified attribute in the current item to the given string value.
`Item`	`withStringSet(String attrName, Set<String> val)` Sets the value of the specified attribute in the current item to the given value.
`Item`	`withStringSet(String attrName, String... val)` Sets the value of the specified attribute in the current item to the given value.

Methods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - Item
```
public Item()
```
- Method Detail
  - isNull
```
public boolean isNull(String attrName)
```
    Returns true if the specified attribute exists with a null value; false otherwise.
  - isPresent
```
public boolean isPresent(String attrName)
```
    Returns true if this item contains the specified attribute; false otherwise.
  - getString
```
public String getString(String attrName)
```
    Returns the value of the specified attribute in the current item as a string; or null if the attribute either doesn't exist or the attribute value is null.
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - withString
```
public Item withString(String attrName,
                       String val)
```
    Sets the value of the specified attribute in the current item to the given string value.
  - getNumber
```
public BigDecimal getNumber(String attrName)
```
    Returns the value of the specified attribute in the current item as a BigDecimal; or null if the attribute either doesn't exist or the attribute value is null.
    
    Throws:
    
    NumberFormatException - if the attribute value is not a valid representation of a BigDecimal.
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - getBigInteger
```
public BigInteger getBigInteger(String attrName)
```
    Returns the value of the specified attribute in the current item as an BigInteger; or null if the attribute doesn't exist.
    
    Throws:
    
    NumberFormatException - if the attribute value is null or not a valid representation of a BigDecimal.
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - getShort
```
public short getShort(String attrName)
```
    Returns the value of the specified attribute in the current item as a short.
    
    Throws:
    
    NumberFormatException - if the attribute value is null or not a valid representation of a BigDecimal.
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - getInt
```
public int getInt(String attrName)
```
    Returns the value of the specified attribute in the current item as an int.
    
    Throws:
    
    NumberFormatException - if the attribute value is null or not a valid representation of a BigDecimal.
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - getLong
```
public long getLong(String attrName)
```
    Returns the value of the specified attribute in the current item as an long.
    
    Throws:
    
    NumberFormatException - if the attribute value is null or not a valid representation of a BigDecimal.
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - getFloat
```
public float getFloat(String attrName)
```
    Returns the value of the specified attribute in the current item as a float.
    
    Throws:
    
    NumberFormatException - if the attribute value is null or not a valid representation of a BigDecimal.
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - getDouble
```
public double getDouble(String attrName)
```
    Returns the value of the specified attribute in the current item as a double.
    
    Throws:
    
    NumberFormatException - if the attribute value is null or not a valid representation of a BigDecimal.
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - withNumber
```
public Item withNumber(String attrName,
                       BigDecimal val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withNumber
```
public Item withNumber(String attrName,
                       Number val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withInt
```
public Item withInt(String attrName,
                    int val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withBigInteger
```
public Item withBigInteger(String attrName,
                           BigInteger val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withShort
```
public Item withShort(String attrName,
                      short val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withFloat
```
public Item withFloat(String attrName,
                      float val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withDouble
```
public Item withDouble(String attrName,
                       double val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withLong
```
public Item withLong(String attrName,
                     long val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - getBinary
```
public byte[] getBinary(String attrName)
```
    Returns the value of the specified attribute in the current item as a byte array; or null if the attribute either doesn't exist or the attribute value is null.
    
    Throws:
    
    UnsupportedOperationException - If the attribute value involves a byte buffer which is not backed by an accessible array
    
    IncompatibleTypeException - if the attribute value cannot be converted into a byte array
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - getByteBuffer
```
public ByteBuffer getByteBuffer(String attrName)
```
    Returns the value of the specified attribute in the current item as a ByteBuffer; or null if the attribute either doesn't exist or the attribute value is null.
    
    Throws:
    
    IncompatibleTypeException - if the attribute value cannot be converted into a byte array
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - withBinary
```
public Item withBinary(String attrName,
                       byte[] val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withBinary
```
public Item withBinary(String attrName,
                       ByteBuffer val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - getStringSet
```
public Set<String> getStringSet(String attrName)
```
    Returns the value of the specified attribute in the current item as a set of strings; or null if the attribute either doesn't exist or the attribute value is null.
    
    Throws:
    
    IncompatibleTypeException - if the attribute value cannot be converted into a set of strings because of duplicate elements
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - withStringSet
```
public Item withStringSet(String attrName,
                          Set<String> val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withStringSet
```
public Item withStringSet(String attrName,
                          String... val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - getNumberSet
```
public Set<BigDecimal> getNumberSet(String attrName)
```
    Returns the value of the specified attribute in the current item as a set of BigDecimal's; or null if the attribute either doesn't exist or the attribute value is null.
    
    Throws:
    
    NumberFormatException - if the attribute involves a value that is not a valid representation of a BigDecimal.
    
    IncompatibleTypeException - if the attribute value cannot be converted into a set of BigDecimal's because of duplicate elements
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - withBigDecimalSet
```
public Item withBigDecimalSet(String attrName,
                              Set<BigDecimal> val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withBigDecimalSet
```
public Item withBigDecimalSet(String attrName,
                              BigDecimal... vals)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withNumberSet
```
public Item withNumberSet(String attrName,
                          Number... vals)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withNumberSet
```
public Item withNumberSet(String attrName,
                          Set<Number> vals)
```
    Sets the value of the specified attribute in the current item to the given value.
  - getBinarySet
```
public Set<byte[]> getBinarySet(String attrName)
```
    Returns the value of the specified attribute in the current item as a set of byte arrays; or null if the attribute either doesn't exist or the attribute value is null.
    
    Throws:
    
    IncompatibleTypeException - if the attribute value cannot be converted into a set of byte arrays
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - getByteBufferSet
```
public Set<ByteBuffer> getByteBufferSet(String attrName)
```
    Returns the value of the specified attribute in the current item as a set of ByteBuffer; or null if the attribute either doesn't exist or the attribute value is null.
    
    Throws:
    
    IncompatibleTypeException - if the attribute value cannot be converted into a set of ByteBuffer
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - withBinarySet
```
public Item withBinarySet(String attrName,
                          Set<byte[]> val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withByteBufferSet
```
public Item withByteBufferSet(String attrName,
                              Set<ByteBuffer> val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withBinarySet
```
public Item withBinarySet(String attrName,
                          byte[]... vals)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withBinarySet
```
public Item withBinarySet(String attrName,
                          ByteBuffer... vals)
```
    Sets the value of the specified attribute in the current item to the given value.
  - getList
```
public <T> List<T> getList(String attrName)
```
    Returns the value of the specified attribute in the current item as a set of T's.; or null if the attribute either doesn't exist or the attribute value is null.
    
    Throws:
    
    ClassCastException - if the attribute involves a value that cannot be casted to T
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - withList
```
public Item withList(String attrName,
                     List<?> val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withList
```
public Item withList(String attrName,
                     Object... vals)
```
    Sets the value of the specified attribute in the current item to the given values as a list.
  - getMap
```
public <T> Map<String,T> getMap(String attrName)
```
    Returns the value of the specified attribute in the current item as a map of string-to-T's; or null if the attribute either doesn't exist or the attribute value is null. Note that any numeric type of a map is always canonicalized into BigDecimal, and therefore if T referred to a Number type, it would need to be BigDecimal to avoid a class cast exception.
    
    Throws:
    
    ClassCastException - if the attribute is not a map of string to T
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - getMapOfNumbers
```
public <T extends Number> Map<String,T> getMapOfNumbers(String attrName,
                                                        Class<T> valueType)
```
    Convenient method to return the specified attribute in the current item as a (copy of) map of string-to-T's where T must be a subclass of Number; or null if the attribute doesn't exist.
    Parameters:
    
    attrName - the attribute name
    valueType - the specific number type of the value to be returned. Currently, only
    
    Short
    
    Integer
    
    Long
    
    Float
    
    Double
    
    Number
    
    BigDecimal
    
    BigInteger
    
    are supported.
    Throws:
    
    UnsupportedOperationException - if the value type is not supported
    
    ClassCastException - if the attribute is not a map of string to numbers
  - getRawMap
```
public Map<String,Object> getRawMap(String attrName)
```
    Convenient method to return the value of the specified attribute in the current item as a map of string-to-Object's; or null if the attribute either doesn't exist or the attribute value is null. Note that any numeric type of the map will be returned as BigDecimal.
    
    Throws:
    
    ClassCastException - if the attribute is not a map
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - withMap
```
public Item withMap(String attrName,
                    Map<String,?> val)
```
    Sets the value of the specified attribute in the current item to the given value.
  - withJSON
```
public Item withJSON(String attrName,
                     String json)
```
    Sets the value of the specified attribute in the current item to the given JSON document in the form of a string.
  - getJSON
```
public String getJSON(String attrName)
```
    Returns the value of the specified attribute in the current item as a JSON string; or null if the attribute either doesn't exist or the attribute value is null.
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - getJSONPretty
```
public String getJSONPretty(String attrName)
```
    Returns the value of the specified attribute in the current item as a JSON string with pretty indentation; or null if the attribute either doesn't exist or the attribute value is null.
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - getBOOL
```
public Boolean getBOOL(String attrName)
```
    Returns the value of the specified attribute in the current item as a non-null Boolean.
    
    Throws:
    
    IncompatibleTypeException - if either the attribute doesn't exist or if the attribute value cannot be converted into a non-null Boolean value
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - getBoolean
```
public boolean getBoolean(String attrName)
```
    Returns the value of the specified attribute in the current item as a primitive boolean.
    
    Throws:
    
    IncompatibleTypeException - if either the attribute doesn't exist or if the attribute value cannot be converted into a boolean value
  - withBoolean
```
public Item withBoolean(String attrName,
                        boolean val)
```
    Sets the value of the specified attribute in the current item to the boolean value.
  - withNull
```
public Item withNull(String attrName)
```
    Sets the value of the specified attribute to null.
  - with
```
public Item with(String attrName,
                 Object val)
```
    Sets the value of the specified attribute to the given value. An attribute value can be a
    - Number
    - String
    - binary (ie byte array or byte buffer)
    - boolean
    - null
    - list (of any of the types on this list)
    - map (with string key to value of any of the types on this list)
    - set (of any of the types on this list)
  - withPrimaryKey
```
public Item withPrimaryKey(PrimaryKey primaryKey)
```
    Convenient methods - sets the attributes of this item from the given key attributes.
  - withPrimaryKey
```
public Item withPrimaryKey(String hashKeyName,
                           Object hashKeyValue)
```
    Convenient method to set the attributes of this item from the given hash-only primary key name and value.
  - withPrimaryKey
```
public Item withPrimaryKey(String hashKeyName,
                           Object hashKeyValue,
                           String rangeKeyName,
                           Object rangeKeyValue)
```
    Convenient method to set the attributes of this item from the given hash and range primary key.
  - withKeyComponents
```
public Item withKeyComponents(KeyAttribute... components)
```
    Convenient methods - sets the attributes of this item from the specified key components.
  - withKeyComponent
```
public Item withKeyComponent(String keyAttrName,
                             Object keyAttrValue)
```
    Convenient methods - sets an attribute of this item for the specified key attribute name and value.
  - get
```
public Object get(String attrName)
```
    Returns the value of the specified attribute in the current item as an object; or null if the attribute either doesn't exist or the attribute value is null.
    An attribute value can be a
    - Number
    - String
    - binary (ie byte array or byte buffer)
    - boolean
    - null
    - list (of any of the types on this list)
    - map (with string key to value of any of the types on this list)
    - set (of any of the types on this list)
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - getTypeOf
```
public Class<?> getTypeOf(String attrName)
```
    Returns the type of the specified attribute in the current item; or null if the attribute either doesn't exist or the attribute value is null.
    
    See Also:
    
    #isNull(String) to check if the attribute value is null., #isPresent(String) to check if the attribute value is present.
  - removeAttribute
```
public Item removeAttribute(String attrName)
```
    Removes the specified attribute from the current item.
  - attributes
```
public Iterable<Map.Entry<String,Object>> attributes()
```
    Returns all attributes of the current item.
  - hasAttribute
```
public boolean hasAttribute(String attrName)
```
    Returns true if this item has the specified attribute; false otherwise.
  - asMap
```
public Map<String,Object> asMap()
```
    Returns all attributes of the current item as a map.
  - numberOfAttributes
```
public int numberOfAttributes()
```
    Returns the number of attributes of this item.
  - fromMap
```
public static Item fromMap(Map<String,Object> attributes)
```
    Convenient factory method - instantiates an Item from the given map.
    
    Parameters:
    
    attributes - simple Java types; not the DyanmoDB types
  - fromJSON
```
public static Item fromJSON(String json)
```
    Convenient factory method - instantiates an Item from the given JSON string.
    
    Returns:
    
    an Item initialized from the given JSON document; or null if the input is null.
  - toJSON
```
public String toJSON()
```
    Returns this item as a JSON string. Note all binary data will become base-64 encoded in the resultant string.
  - base64Decode
```
public Item base64Decode(String... binaryAttrNames)
```
    Utility method to decode the designated binary attributes from base-64 encoding; converting binary lists into binary sets.
    
    Parameters:
    
    binaryAttrNames - names of binary attributes or binary set attributes currently base-64 encoded (typically when converted from a JSON string.)
    
    See Also:
    
    fromJSON(String)
  - convertListsToSets
```
public Item convertListsToSets(String... listAttrNames)
```
    Utility method to converts the designated attributes from List into Set, throwing IllegalArgumentException should there be duplicate elements.
    
    Parameters:
    
    listAttrNames - names of attributes to be converted.
    
    See Also:
    
    fromJSON(String)
  - toJSONPretty
```
public String toJSONPretty()
```
    Returns this item as a pretty JSON string. Note all binary data will become base-64 encoded in the resultant string.
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - equals
```
public boolean equals(Object in)
```
    Overrides:
    
    equals in class Object

Class Item

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Item

Method Detail

isNull

isPresent

getString

withString

getNumber

getBigInteger

getShort

getInt

getLong

getFloat

getDouble

withNumber

withNumber

withInt

withBigInteger

withShort

withFloat

withDouble

withLong

getBinary

getByteBuffer

withBinary

withBinary

getStringSet

withStringSet

withStringSet

getNumberSet

withBigDecimalSet

withBigDecimalSet

withNumberSet

withNumberSet

getBinarySet

getByteBufferSet

withBinarySet

withByteBufferSet

withBinarySet

withBinarySet

getList

withList

withList

getMap

getMapOfNumbers

getRawMap

withMap

withJSON

getJSON

getJSONPretty

getBOOL

getBoolean

withBoolean

withNull

with

withPrimaryKey

withPrimaryKey

withPrimaryKey

withKeyComponents

withKeyComponent

get

getTypeOf

removeAttribute

attributes

hasAttribute

asMap

numberOfAttributes

fromMap

fromJSON

toJSON

base64Decode

convertListsToSets

toJSONPretty

toString

hashCode

equals