N (AWS SDK for Java

java.lang.Object
- com.amazonaws.services.dynamodbv2.xspec.Operand
- - com.amazonaws.services.dynamodbv2.xspec.PathOperand
  - - com.amazonaws.services.dynamodbv2.xspec.N

```
@Beta
 @Immutable
public final class N
extends PathOperand
```
A path operand that refers to a number attribute in DynamoDB; used for building expressions.
Use ExpressionSpecBuilder.N(String) to instantiate this class.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`AddAction`	`add(Number value)` Returns an `AddAction` for build expression that would add the given value mathematically to the existing attribute; or if the attribute does not already exist, add the new attribute and the value to the item.
`BetweenCondition`	`between(Number low, Number high)` Returns a `BetweenCondition` that represents a BETWEEN comparison (that evaluates to true if the value of the current attribute is greater than or equal to the given low value, and less than or equal to the given high value) for building condition expression.
`ComparatorCondition`	`eq(N that)` Returns a comparator condition (that evaluates to true if the value of the current attribute is equal to that of the specified attribute) for building condition expression.
`ComparatorCondition`	`eq(Number value)` Returns a comparator condition (that evaluates to true if the attribute value referred to by this path operand is equal to the specified value) for building condition expression.
`ComparatorCondition`	`ge(N that)` Returns a comparator condition (that evaluates to true if the value of the current attribute is greater than or equal to that of the specified attribute) for building condition expression.
`ComparatorCondition`	`ge(Number value)` Returns a comparator condition (that evaluates to true if the value of the current attribute is greater than or equal to the specified value) for building condition expression.
`ComparatorCondition`	`gt(N that)` Returns a comparator condition (that evaluates to true if the value of the current attribute is greater than that of the specified attribute) for building condition expression.
`ComparatorCondition`	`gt(Number value)` Returns a comparator condition (that evaluates to true if the value of the current attribute is greater than the specified value) for building condition expression.
`IfNotExistsFunction<N>`	`ifNotExists(N defaultValue)` Returns an `IfNotExists` object which represents an if_not_exists(path, operand) function call where path refers to that of the current attribute; used for building expressions.
`IfNotExistsFunction<N>`	`ifNotExists(Number defaultValue)` Returns an `IfNotExists` object which represents an if_not_exists(path, operand) function call where path refers to that of the current path operand; used for building expressions.
`<T extends Number> InCondition`	`in(List<T> values)` Returns an InCondition (that evaluates to true if the value of the current attribute is equal to any of the values in the specified list) for building condition expression.
`InCondition`	`in(Number... values)` Returns an InCondition (that evaluates to true if the value of the current attribute is equal to any of the specified values) for building condition expression.
`ComparatorCondition`	`le(N that)` Returns a comparator condition (that evaluates to true if the value of the current attribute is less than or equal to that of the specified attribute) for building condition expression.
`ComparatorCondition`	`le(Number value)` Returns a comparator condition (that evaluates to true if the value of the current attribute is less than or equal to the specified value) for building condition expression.
`ComparatorCondition`	`lt(N that)` Returns a comparator condition (that evaluates to true if the value of the current attribute is less than that of the specified attribute) for building condition expression.
`ComparatorCondition`	`lt(Number value)` Returns a comparator condition (that evaluates to true if the value of the current attribute is less than the specified value) for building condition expression.
`MinusOperation`	`minus(N attr)` Returns a `MinusOperation` object that represents the subtraction of the value of the given attribute from that of the current attribute; used for building update expression.
`MinusOperation`	`minus(Number value)` Returns a `MinusOperation` object that represents the subtraction of the given value from that of the current attribute; used for building update expression.
`ComparatorCondition`	`ne(N that)` Returns a comparator condition (that evaluates to true if the value of the current attribute is not equal to that of the specified attribute) for building condition expression.
`ComparatorCondition`	`ne(Number value)` Returns a comparator condition (that evaluates to true if the attribute value referred to by this path operand is not equal to that of the specified path operand) for building condition expression.
`PlusOperation`	`plus(N attr)` Returns a `PlusOperation` object that represents the addition of the value of the given attribute to that of the current attribute; used for building update expression.
`PlusOperation`	`plus(Number value)` Returns a `PlusOperation` that represents the addition of the given value to that of the current attribute; used for building update expression.
`SetAction`	`set(IfNotExistsFunction<N> ifNotExistsFunction)` Returns a `SetAction` object used for building update expression.
`SetAction`	`set(MinusOperation minusOperation)` Returns a `SetAction` object used for building update expression with the specified `MinusOperation`.
`SetAction`	`set(N source)` Returns a `SetAction` object used for building update expression.
`SetAction`	`set(Number value)` Returns a `SetAction` object used for building update expression.
`SetAction`	`set(PlusOperation plusOperation)` Returns a `SetAction` object used for building update expression with the specified `PlusOperation`.

Methods inherited from class com.amazonaws.services.dynamodbv2.xspec.PathOperand
equals, exists, hashCode, notExists, remove, toString

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

- Method Detail
  - eq
```
public ComparatorCondition eq(N that)
```
    Returns a comparator condition (that evaluates to true if the value of the current attribute is equal to that of the specified attribute) for building condition expression.
  - ne
```
public ComparatorCondition ne(N that)
```
    Returns a comparator condition (that evaluates to true if the value of the current attribute is not equal to that of the specified attribute) for building condition expression.
  - le
```
public ComparatorCondition le(Number value)
```
    Returns a comparator condition (that evaluates to true if the value of the current attribute is less than or equal to the specified value) for building condition expression.
  - le
```
public ComparatorCondition le(N that)
```
    Returns a comparator condition (that evaluates to true if the value of the current attribute is less than or equal to that of the specified attribute) for building condition expression.
  - lt
```
public ComparatorCondition lt(Number value)
```
    Returns a comparator condition (that evaluates to true if the value of the current attribute is less than the specified value) for building condition expression.
  - lt
```
public ComparatorCondition lt(N that)
```
    Returns a comparator condition (that evaluates to true if the value of the current attribute is less than that of the specified attribute) for building condition expression.
  - ge
```
public ComparatorCondition ge(Number value)
```
    Returns a comparator condition (that evaluates to true if the value of the current attribute is greater than or equal to the specified value) for building condition expression.
  - ge
```
public ComparatorCondition ge(N that)
```
    Returns a comparator condition (that evaluates to true if the value of the current attribute is greater than or equal to that of the specified attribute) for building condition expression.
  - gt
```
public ComparatorCondition gt(Number value)
```
    Returns a comparator condition (that evaluates to true if the value of the current attribute is greater than the specified value) for building condition expression.
  - gt
```
public ComparatorCondition gt(N that)
```
    Returns a comparator condition (that evaluates to true if the value of the current attribute is greater than that of the specified attribute) for building condition expression.
  - between
```
public BetweenCondition between(Number low,
                                Number high)
```
    Returns a BetweenCondition that represents a BETWEEN comparison (that evaluates to true if the value of the current attribute is greater than or equal to the given low value, and less than or equal to the given high value) for building condition expression.
  - add
```
public AddAction add(Number value)
```
    Returns an AddAction for build expression that would add the given value mathematically to the existing attribute; or if the attribute does not already exist, add the new attribute and the value to the item.
    In general, DynamoDB recommends using SET rather than ADD.
  - plus
```
public PlusOperation plus(Number value)
```
    Returns a PlusOperation that represents the addition of the given value to that of the current attribute; used for building update expression.
    
    Parameters:
    
    value - given value to be added to the value of the current attribute.
  - plus
```
public PlusOperation plus(N attr)
```
    Returns a PlusOperation object that represents the addition of the value of the given attribute to that of the current attribute; used for building update expression.
    
    Parameters:
    
    attr - given attribute whose value is to be added to that of the current attribute
  - minus
```
public MinusOperation minus(Number value)
```
    Returns a MinusOperation object that represents the subtraction of the given value from that of the current attribute; used for building update expression.
    
    Parameters:
    
    value - given value to be subtracted from the value of the current attribute.
  - minus
```
public MinusOperation minus(N attr)
```
    Returns a MinusOperation object that represents the subtraction of the value of the given attribute from that of the current attribute; used for building update expression.
    
    Parameters:
    
    attr - given attribute whose value is to be subtracted from that of the current attribute
  - set
```
public final SetAction set(PlusOperation plusOperation)
```
    Returns a SetAction object used for building update expression with the specified PlusOperation. If the current attribute doesn't exist, the returned object represents adding the result of the specified plus ('+') binary operation as an attribute to an item. If this attribute already exists, the returned object represents the value replacement of the current attribute by the result of the specified plus ('+') binary operation.
  - set
```
public final SetAction set(MinusOperation minusOperation)
```
    Returns a SetAction object used for building update expression with the specified MinusOperation. If the current attribute doesn't exist, the returned object represents adding the result of the specified minus ('-') binary operation as an attribute to an item. If this attribute already exists, the returned object represents the value replacement of the current attribute by the result of the specified minus ('-') binary operation.
  - in
```
public final InCondition in(Number... values)
```
    Returns an InCondition (that evaluates to true if the value of the current attribute is equal to any of the specified values) for building condition expression.
    
    Parameters:
    
    values - specified values. The number of values must be at least one and at most 100.
  - in
```
public final <T extends Number> InCondition in(List<T> values)
```
    Returns an InCondition (that evaluates to true if the value of the current attribute is equal to any of the values in the specified list) for building condition expression.
    
    Parameters:
    
    values - specified list of values. The number of values must be at least one and at most 100.
  - set
```
public SetAction set(N source)
```
    Returns a SetAction object used for building update expression. If the attribute referred to by this path operand doesn't exist, the returned object represents adding the attribute value of the specified source path operand to an item. If the current attribute already exists, the returned object represents the value replacement of the current attribute by the attribute value of the specified source path operand.
  - set
```
public SetAction set(Number value)
```
    Returns a SetAction object used for building update expression. If the attribute referred to by this path operand doesn't exist, the returned object represents adding the specified value as an attribute to an item. If the attribute referred to by this path operand already exists, the returned object represents the value replacement of the current attribute by the specified value.
  - set
```
public SetAction set(IfNotExistsFunction<N> ifNotExistsFunction)
```
    Returns a SetAction object used for building update expression. If the attribute referred to by this path operand doesn't exist, the returned object represents adding the value of evaluating the specified IfNotExists function as an attribute to an item. If the attribute referred to by this path operand already exists, the returned object represents the value replacement of the current attribute by the value of evaluating the specified IfNotExists function.
  - eq
```
public ComparatorCondition eq(Number value)
```
    Returns a comparator condition (that evaluates to true if the attribute value referred to by this path operand is equal to the specified value) for building condition expression.
  - ne
```
public ComparatorCondition ne(Number value)
```
    Returns a comparator condition (that evaluates to true if the attribute value referred to by this path operand is not equal to that of the specified path operand) for building condition expression.
  - ifNotExists
```
public IfNotExistsFunction<N> ifNotExists(Number defaultValue)
```
    Returns an IfNotExists object which represents an if_not_exists(path, operand) function call where path refers to that of the current path operand; used for building expressions.
```
 "if_not_exists (path, operand) – If the item does not contain an attribute 
 at the specified path, then if_not_exists evaluates to operand; otherwise, 
 it evaluates to path. You can use this function to avoid overwriting an 
 attribute already present in the item."
 
```
    Parameters:
    
    defaultValue - the default value that will be used as the operand to the if_not_exists function call.
  - ifNotExists
```
public IfNotExistsFunction<N> ifNotExists(N defaultValue)
```
    Returns an IfNotExists object which represents an if_not_exists(path, operand) function call where path refers to that of the current attribute; used for building expressions.
```
 "if_not_exists (path, operand) – If the item does not contain an attribute 
 at the specified path, then if_not_exists evaluates to operand; otherwise, 
 it evaluates to path. You can use this function to avoid overwriting an 
 attribute already present in the item."
 
```
    Parameters:
    
    defaultValue - the default value that will be used as the operand to the if_not_exists function call.

AWS SDK for Java 1.x API Reference - 1.12.793

Class N

Method Summary

Methods inherited from class com.amazonaws.services.dynamodbv2.xspec.PathOperand

Methods inherited from class java.lang.Object

Method Detail

eq

ne

le

le

lt

lt

ge

ge

gt

gt

between

add

plus

plus

minus

minus

set

set

in

in

set

set

set

eq

ne

ifNotExists

ifNotExists