java.lang.Object
- dev.morphia.aggregation.Projection

```
@Deprecated(since="2.0",
            forRemoval=true)
public final class Projection
extends Object
```
Deprecated, for removal: This API element is subject to removal in a future version.
use Projection instead

Defines a projection for use in aggregation

Method Summary

All Methods Static Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`static Projection`	`add(Object... args)`	Deprecated, for removal: This API element is subject to removal in a future version. Creates an addition projection
`static Projection`	`divide(Object arg1, Object arg2)`	Deprecated, for removal: This API element is subject to removal in a future version. Creates a division projection
`static Projection`	`expression(String operator, Object... args)`	Deprecated, for removal: This API element is subject to removal in a future version. Provides access to arbitrary expressions taking an array of arguments, such as $concat
`List<Object>`	`getArguments()`	Deprecated, for removal: This API element is subject to removal in a future version.
`List<Projection>`	`getProjections()`	Deprecated, for removal: This API element is subject to removal in a future version.
`String`	`getSource()`	Deprecated, for removal: This API element is subject to removal in a future version.
`String`	`getTarget()`	Deprecated, for removal: This API element is subject to removal in a future version.
`boolean`	`isSuppressed()`	Deprecated, for removal: This API element is subject to removal in a future version.
`static Projection`	`list(Object... args)`	Deprecated, for removal: This API element is subject to removal in a future version. Creates a list projection
`static Projection`	`mod(Object arg1, Object arg2)`	Deprecated, for removal: This API element is subject to removal in a future version. Creates a modulo projection
`static Projection`	`multiply(Object... args)`	Deprecated, for removal: This API element is subject to removal in a future version. Creates a multiplication projection
`static Projection`	`projection(String field)`	Deprecated, for removal: This API element is subject to removal in a future version. Creates a projection on a field
`static Projection`	`projection(String field, Projection projection, Projection... subsequent)`	Deprecated, for removal: This API element is subject to removal in a future version. Creates a projection on a field with subsequent projects applied.
`static Projection`	`projection(String field, String projectedField)`	Deprecated, for removal: This API element is subject to removal in a future version. Creates a projection on a field and renames it
`static Projection`	`size(Object expression)`	Deprecated, for removal: This API element is subject to removal in a future version. Counts and returns the total the number of items in an array
`static Projection`	`subtract(Object arg1, Object arg2)`	Deprecated, for removal: This API element is subject to removal in a future version. Creates a subtraction projection
`Projection`	`suppress()`	Deprecated, for removal: This API element is subject to removal in a future version. Marks this field to be suppressed from the output of this stage
`String`	`toString()`	Deprecated, for removal: This API element is subject to removal in a future version.

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

- Method Detail
  - add
```
public static Projection add(Object... args)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Creates an addition projection
    
    Parameters:
    
    args - the projection arguments
    
    Returns:
    
    the projection
    
    MongoDB documentation
    Aggregration Expression: $add
  - divide
```
public static Projection divide(Object arg1,
                                Object arg2)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Creates a division projection
    
    Parameters:
    
    arg1 - subtraction argument
    
    arg2 - subtraction argument
    
    Returns:
    
    the projection
    
    MongoDB documentation
    Aggregration Expression: $divide
  - expression
```
public static Projection expression(String operator,
                                    Object... args)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Provides access to arbitrary expressions taking an array of arguments, such as $concat
    
    Parameters:
    
    operator - the operator for the projection
    
    args - the projection arguments
    
    Returns:
    
    the projection
  - list
```
public static Projection list(Object... args)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Creates a list projection
    
    Parameters:
    
    args - the projection arguments
    
    Returns:
    
    the projection
  - mod
```
public static Projection mod(Object arg1,
                             Object arg2)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Creates a modulo projection
    
    Parameters:
    
    arg1 - subtraction argument
    
    arg2 - subtraction argument
    
    Returns:
    
    the projection
    
    MongoDB documentation
    Aggregration Expression: $mod
  - multiply
```
public static Projection multiply(Object... args)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Creates a multiplication projection
    
    Parameters:
    
    args - the projection arguments
    
    Returns:
    
    the projection
    
    MongoDB documentation
    Aggregration Expression: $multiply
  - projection
```
public static Projection projection(String field)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Creates a projection on a field
    
    Parameters:
    
    field - the field
    
    Returns:
    
    the projection
  - projection
```
public static Projection projection(String field,
                                    String projectedField)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Creates a projection on a field and renames it
    
    Parameters:
    
    field - the field
    
    projectedField - the new field name
    
    Returns:
    
    the projection
  - projection
```
public static Projection projection(String field,
                                    Projection projection,
                                    Projection... subsequent)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Creates a projection on a field with subsequent projects applied.
    
    Parameters:
    
    field - the field
    
    projection - the project to apply
    
    subsequent - the other projections to apply
    
    Returns:
    
    the projection
  - size
```
public static Projection size(Object expression)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Counts and returns the total the number of items in an array
    
    Parameters:
    
    expression - The argument for $size can be any expression as long as it resolves to an array.
    
    Returns:
    
    the projection
    
    MongoDB documentation
    Aggregration Expression: $size
  - subtract
```
public static Projection subtract(Object arg1,
                                  Object arg2)
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Creates a subtraction projection
    
    Parameters:
    
    arg1 - subtraction argument
    
    arg2 - subtraction argument
    
    Returns:
    
    the projection
    
    MongoDB documentation
    Aggregration Expression: $subtract
  - getArguments
```
@Nullable
public List<Object> getArguments()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Returns:
    
    the arguments for the projection
  - getProjections
```
@Nullable
public List<Projection> getProjections()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Returns:
    
    any projections applied to this field
  - getSource
```
@Nullable
public String getSource()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Returns:
    
    the projected field name
  - getTarget
```
@Nullable
public String getTarget()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Returns:
    
    the source field of the projection
  - isSuppressed
```
public boolean isSuppressed()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Returns:
    
    true if this field is suppressed from the output
  - suppress
```
public Projection suppress()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Marks this field to be suppressed from the output of this stage
    
    Returns:
    
    this
  - toString
```
public String toString()
```
    Deprecated, for removal: This API element is subject to removal in a future version.
    
    Overrides:
    
    toString in class Object

Class Projection

Method Summary

Methods inherited from class java.lang.Object

Method Detail

add

divide

expression

list

mod

multiply

projection

projection

projection

size

subtract

getArguments

getProjections

getSource

getTarget

isSuppressed

suppress

toString