Projection (AWS SDK for Java

java.lang.Object
- com.amazonaws.services.dynamodbv2.model.Projection

All Implemented Interfaces:

Serializable, Cloneable
```
public class Projection
extends Object
implements Serializable, Cloneable
```
Represents attributes that are copied (projected) from the table into an index. These are in addition to the primary key attributes and index key attributes, which are automatically projected.

See Also:

Serialized Form

Constructor Summary

Constructors
Constructor and Description

Projection()

Constructors
Constructor and Description
`Projection()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`Projection`	`clone()`
`boolean`	`equals(Object obj)`
`List<String>`	`getNonKeyAttributes()` Represents the non-key attribute names which will be projected into the index.
`String`	`getProjectionType()` The set of attributes that are projected into the index:
`int`	`hashCode()`
`void`	`setNonKeyAttributes(Collection<String> nonKeyAttributes)` Represents the non-key attribute names which will be projected into the index.
`void`	`setProjectionType(ProjectionType projectionType)` The set of attributes that are projected into the index:
`void`	`setProjectionType(String projectionType)` The set of attributes that are projected into the index:
`String`	`toString()` Returns a string representation of this object; useful for testing and debugging.
`Projection`	`withNonKeyAttributes(Collection<String> nonKeyAttributes)` Represents the non-key attribute names which will be projected into the index.
`Projection`	`withNonKeyAttributes(String... nonKeyAttributes)` Represents the non-key attribute names which will be projected into the index.
`Projection`	`withProjectionType(ProjectionType projectionType)` The set of attributes that are projected into the index:
`Projection`	`withProjectionType(String projectionType)` The set of attributes that are projected into the index:

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

- Constructor Detail
  - Projection
```
public Projection()
```
- Method Detail
  - setProjectionType
```
public void setProjectionType(String projectionType)
```
    The set of attributes that are projected into the index:
    - KEYS_ONLY - Only the index and primary keys are projected into the index.
    - INCLUDE - Only the specified table attributes are projected into the index. The list of projected attributes are in NonKeyAttributes.
    - ALL - All of the table attributes are projected into the index.
    Parameters:
    projectionType - The set of attributes that are projected into the index:
    
    KEYS_ONLY - Only the index and primary keys are projected into the index.
    
    INCLUDE - Only the specified table attributes are projected into the index. The list of projected attributes are in NonKeyAttributes.
    
    ALL - All of the table attributes are projected into the index.
    See Also:
    
    ProjectionType
  - getProjectionType
```
public String getProjectionType()
```
    The set of attributes that are projected into the index:
    - KEYS_ONLY - Only the index and primary keys are projected into the index.
    - INCLUDE - Only the specified table attributes are projected into the index. The list of projected attributes are in NonKeyAttributes.
    - ALL - All of the table attributes are projected into the index.
    Returns:
    The set of attributes that are projected into the index:
    
    KEYS_ONLY - Only the index and primary keys are projected into the index.
    
    INCLUDE - Only the specified table attributes are projected into the index. The list of projected attributes are in NonKeyAttributes.
    
    ALL - All of the table attributes are projected into the index.
    See Also:
    
    ProjectionType
  - withProjectionType
```
public Projection withProjectionType(String projectionType)
```
    The set of attributes that are projected into the index:
    - KEYS_ONLY - Only the index and primary keys are projected into the index.
    - INCLUDE - Only the specified table attributes are projected into the index. The list of projected attributes are in NonKeyAttributes.
    - ALL - All of the table attributes are projected into the index.
    Parameters:
    projectionType - The set of attributes that are projected into the index:
    
    KEYS_ONLY - Only the index and primary keys are projected into the index.
    
    INCLUDE - Only the specified table attributes are projected into the index. The list of projected attributes are in NonKeyAttributes.
    
    ALL - All of the table attributes are projected into the index.
    Returns:
    
    Returns a reference to this object so that method calls can be chained together.
    
    See Also:
    
    ProjectionType
  - setProjectionType
```
public void setProjectionType(ProjectionType projectionType)
```
    The set of attributes that are projected into the index:
    - KEYS_ONLY - Only the index and primary keys are projected into the index.
    - INCLUDE - Only the specified table attributes are projected into the index. The list of projected attributes are in NonKeyAttributes.
    - ALL - All of the table attributes are projected into the index.
    Parameters:
    projectionType - The set of attributes that are projected into the index:
    
    KEYS_ONLY - Only the index and primary keys are projected into the index.
    
    INCLUDE - Only the specified table attributes are projected into the index. The list of projected attributes are in NonKeyAttributes.
    
    ALL - All of the table attributes are projected into the index.
    See Also:
    
    ProjectionType
  - withProjectionType
```
public Projection withProjectionType(ProjectionType projectionType)
```
    The set of attributes that are projected into the index:
    - KEYS_ONLY - Only the index and primary keys are projected into the index.
    - INCLUDE - Only the specified table attributes are projected into the index. The list of projected attributes are in NonKeyAttributes.
    - ALL - All of the table attributes are projected into the index.
    Parameters:
    projectionType - The set of attributes that are projected into the index:
    
    KEYS_ONLY - Only the index and primary keys are projected into the index.
    
    INCLUDE - Only the specified table attributes are projected into the index. The list of projected attributes are in NonKeyAttributes.
    
    ALL - All of the table attributes are projected into the index.
    Returns:
    
    Returns a reference to this object so that method calls can be chained together.
    
    See Also:
    
    ProjectionType
  - getNonKeyAttributes
```
public List<String> getNonKeyAttributes()
```
    Represents the non-key attribute names which will be projected into the index.
    
    For local secondary indexes, the total count of NonKeyAttributes summed across all of the local secondary indexes, must not exceed 20. If you project the same attribute into two different indexes, this counts as two distinct attributes when determining the total.
    
    Returns:
    
    Represents the non-key attribute names which will be projected into the index.
    
    For local secondary indexes, the total count of NonKeyAttributes summed across all of the local secondary indexes, must not exceed 20. If you project the same attribute into two different indexes, this counts as two distinct attributes when determining the total.
  - setNonKeyAttributes
```
public void setNonKeyAttributes(Collection<String> nonKeyAttributes)
```
    Represents the non-key attribute names which will be projected into the index.
    
    For local secondary indexes, the total count of NonKeyAttributes summed across all of the local secondary indexes, must not exceed 20. If you project the same attribute into two different indexes, this counts as two distinct attributes when determining the total.
    
    Parameters:
    
    nonKeyAttributes - Represents the non-key attribute names which will be projected into the index.
    
    For local secondary indexes, the total count of NonKeyAttributes summed across all of the local secondary indexes, must not exceed 20. If you project the same attribute into two different indexes, this counts as two distinct attributes when determining the total.
  - withNonKeyAttributes
```
public Projection withNonKeyAttributes(String... nonKeyAttributes)
```
    Represents the non-key attribute names which will be projected into the index.
    
    For local secondary indexes, the total count of NonKeyAttributes summed across all of the local secondary indexes, must not exceed 20. If you project the same attribute into two different indexes, this counts as two distinct attributes when determining the total.
    
    NOTE: This method appends the values to the existing list (if any). Use setNonKeyAttributes(java.util.Collection) or withNonKeyAttributes(java.util.Collection) if you want to override the existing values.
    
    Parameters:
    
    nonKeyAttributes - Represents the non-key attribute names which will be projected into the index.
    
    For local secondary indexes, the total count of NonKeyAttributes summed across all of the local secondary indexes, must not exceed 20. If you project the same attribute into two different indexes, this counts as two distinct attributes when determining the total.
    
    Returns:
    
    Returns a reference to this object so that method calls can be chained together.
  - withNonKeyAttributes
```
public Projection withNonKeyAttributes(Collection<String> nonKeyAttributes)
```
    Represents the non-key attribute names which will be projected into the index.
    
    For local secondary indexes, the total count of NonKeyAttributes summed across all of the local secondary indexes, must not exceed 20. If you project the same attribute into two different indexes, this counts as two distinct attributes when determining the total.
    
    Parameters:
    
    nonKeyAttributes - Represents the non-key attribute names which will be projected into the index.
    
    For local secondary indexes, the total count of NonKeyAttributes summed across all of the local secondary indexes, must not exceed 20. If you project the same attribute into two different indexes, this counts as two distinct attributes when determining the total.
    
    Returns:
    
    Returns a reference to this object so that method calls can be chained together.
  - toString
```
public String toString()
```
    Returns a string representation of this object; useful for testing and debugging.
    
    Overrides:
    
    toString in class Object
    
    Returns:
    
    A string representation of this object.
    
    See Also:
    
    Object.toString()
  - equals
```
public boolean equals(Object obj)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - clone
```
public Projection clone()
```
    Overrides:
    
    clone in class Object

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Class Projection

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

Projection

Method Detail

setProjectionType

getProjectionType

withProjectionType

setProjectionType

withProjectionType

getNonKeyAttributes

setNonKeyAttributes

withNonKeyAttributes

withNonKeyAttributes

toString

equals

hashCode

clone