java.lang.Object
- com.oracle.coherence.concurrent.executor.Result<T>

Type Parameters:

T - the type of result produced by the Task

All Implemented Interfaces:

ExternalizableLite, PortableObject, Serializable
```
public class Result<T>
extends Object
implements ExternalizableLite, PortableObject
```
An immutable container representing an intermediate or final result produced by executing a Task, typically by an individual Executor, including no result, a specific value or a Throwable.
If a value or Throwable is present, isPresent() will return true and get() will return the value or throw the Throwable.

Since:

21.12

Author:

bo

See Also:

Serialized Form

Field Summary

Fields
Modifier and Type	Field	Description
`protected boolean`	`m_fPresent`	Is the result present?
`protected Throwable`	`m_throwable`	The throwable (when error occurred).
`protected T`	`m_value`	The value (when provided).

Constructor Summary

Constructors
Constructor Description

Result()
Constructs an Result that has no value.

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`equals(Object o)`
`T`	`get()`	Obtains the value throwable the `Result`.
`int`	`hashCode()`
`boolean`	`isPresent()`	Determines if a value or `Throwable` is present for the `Result` (ie: non-`none()`).
`boolean`	`isThrowable()`	Determines if the `Result` is a `Throwable`.
`boolean`	`isValue()`	Determines if the value is available (including `null`).
`static <T> Result<T>`	`none()`	Constructs an `Result` representing no value.
`static <T> Result<T>`	`of(T value)`	Constructs an `Result` with a specific value.
`T`	`orElse(T value)`	Obtains the value of the `Result` if present, otherwise returns the specified value.
`void`	`readExternal(PofReader in)`	Restore the contents of a user type instance by reading its state using the specified PofReader object.
`void`	`readExternal(DataInput in)`	Restore the contents of this object by loading the object's state from the passed DataInput object.
`static Result`	`throwable(Throwable throwable)`	Constructs an `Result` with a specific `Throwable`.
`String`	`toString()`
`void`	`writeExternal(PofWriter out)`	Save the contents of a POF user type instance by writing its state using the specified PofWriter object.
`void`	`writeExternal(DataOutput out)`	Save the contents of this object by storing the object's state into the passed DataOutput object.

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

- Field Detail
  - m_fPresent
```
protected boolean m_fPresent
```
    Is the result present?
  - m_value
```
protected T m_value
```
    The value (when provided).
  - m_throwable
```
protected Throwable m_throwable
```
    The throwable (when error occurred).
- Constructor Detail
  - Result
```
public Result()
```
    Constructs an Result that has no value.
- Method Detail
  - none
```
public static <T> Result<T> none()
```
    Constructs an Result representing no value.
    
    Type Parameters:
    
    T - the type throwable the Result
    
    Returns:
    
    a Result representing no value.
  - of
```
public static <T> Result<T> of(T value)
```
    Constructs an Result with a specific value.
    
    Type Parameters:
    
    T - the type throwable the Result
    
    Parameters:
    
    value - the value
    
    Returns:
    
    an Result with a specific value
  - throwable
```
public static Result throwable(Throwable throwable)
```
    Constructs an Result with a specific Throwable.
    
    Parameters:
    
    throwable - the Throwable
    
    Returns:
    
    an Result with a specific Throwable
  - isPresent
```
public boolean isPresent()
```
    Determines if a value or Throwable is present for the Result (ie: non-none()).
    
    Returns:
    
    true if the Result is not none(), false otherwise
  - isValue
```
public boolean isValue()
```
    Determines if the value is available (including null).
    
    Returns:
    
    true if the Result is not none() and a value is available, false otherwise
  - isThrowable
```
public boolean isThrowable()
```
    Determines if the Result is a Throwable.
    
    Returns:
    
    true if the Result is not none() and is a Throwable false otherwise
  - get
```
public T get()
      throws Throwable
```
    Obtains the value throwable the Result.
    
    Returns:
    
    the value throwable the Result
    
    Throws:
    
    NoSuchElementException - when the Result value is not isPresent()
    
    Throwable - when the Result was any other Throwable
  - orElse
```
public T orElse(T value)
```
    Obtains the value of the Result if present, otherwise returns the specified value.
    
    Parameters:
    
    value - the value to return if the isPresent() fails
    
    Returns:
    
    the get() when isPresent(), otherwise the specified value
  - equals
```
public boolean equals(Object o)
```
    Overrides:
    
    equals in class Object
  - hashCode
```
public int hashCode()
```
    Overrides:
    
    hashCode in class Object
  - toString
```
public String toString()
```
    Overrides:
    
    toString in class Object
  - readExternal
```
public void readExternal(DataInput in)
                  throws IOException
```
    Description copied from interface: ExternalizableLite
    
    Restore the contents of this object by loading the object's state from the passed DataInput object.
    
    Specified by:
    
    readExternal in interface ExternalizableLite
    
    Parameters:
    
    in - the DataInput stream to read data from in order to restore the state of this object
    
    Throws:
    
    IOException - if an I/O exception occurs
    
    NotActiveException - if the object is not in its initial state, and therefore cannot be deserialized into
  - writeExternal
```
public void writeExternal(DataOutput out)
                   throws IOException
```
    Description copied from interface: ExternalizableLite
    
    Save the contents of this object by storing the object's state into the passed DataOutput object.
    
    Specified by:
    
    writeExternal in interface ExternalizableLite
    
    Parameters:
    
    out - the DataOutput stream to write the state of this object to
    
    Throws:
    
    IOException - if an I/O exception occurs
  - readExternal
```
public void readExternal(PofReader in)
                  throws IOException
```
    Description copied from interface: PortableObject
    
    Restore the contents of a user type instance by reading its state using the specified PofReader object.
    
    Specified by:
    
    readExternal in interface PortableObject
    
    Parameters:
    
    in - the PofReader from which to read the object's state
    
    Throws:
    
    IOException - if an I/O error occurs
  - writeExternal
```
public void writeExternal(PofWriter out)
                   throws IOException
```
    Description copied from interface: PortableObject
    
    Save the contents of a POF user type instance by writing its state using the specified PofWriter object.
    
    Specified by:
    
    writeExternal in interface PortableObject
    
    Parameters:
    
    out - the PofWriter to which to write the object's state
    
    Throws:
    
    IOException - if an I/O error occurs

Class Result<T>

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

m_fPresent

m_value

m_throwable

Constructor Detail

Result

Method Detail

none

of

throwable

isPresent

isValue

isThrowable

get

orElse

equals

hashCode

toString

readExternal

writeExternal

readExternal

writeExternal