java.lang.Object
- java.lang.Enum<BufferState>
- - io.prestosql.execution.buffer.BufferState

All Implemented Interfaces:

Serializable, Comparable<BufferState>
```
public enum BufferState
extends Enum<BufferState>
```

Enum Constant Summary

Enum Constants
Enum Constant	Description
`FAILED`	Buffer has failed.
`FINISHED`	No more buffers can be added and all pages have been consumed.
`FLUSHING`	No more pages or buffers can be added, and buffer is waiting for the final pages to be consumed.
`NO_MORE_BUFFERS`	No more buffers can be added.
`NO_MORE_PAGES`	No more pages can be added.
`OPEN`	Additional buffers can be added.

Field Summary

Fields
Modifier and Type Field Description

static Set<BufferState> TERMINAL_BUFFER_STATES

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`boolean`	`canAddBuffers()`
`boolean`	`canAddPages()`
`boolean`	`isTerminal()`
`static BufferState`	`valueOf(String name)`	Returns the enum constant of this type with the specified name.
`static BufferState[]`	`values()`	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum
clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

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

- Enum Constant Detail
  - OPEN
```
public static final BufferState OPEN
```
    Additional buffers can be added. Any next state is allowed.
  - NO_MORE_BUFFERS
```
public static final BufferState NO_MORE_BUFFERS
```
    No more buffers can be added. Next state is FLUSHING.
  - NO_MORE_PAGES
```
public static final BufferState NO_MORE_PAGES
```
    No more pages can be added. Next state is FLUSHING.
  - FLUSHING
```
public static final BufferState FLUSHING
```
    No more pages or buffers can be added, and buffer is waiting for the final pages to be consumed. Next state is FINISHED.
  - FINISHED
```
public static final BufferState FINISHED
```
    No more buffers can be added and all pages have been consumed. This is the terminal state.
  - FAILED
```
public static final BufferState FAILED
```
    Buffer has failed. No more buffers or pages can be added. Readers will be blocked, as to not communicate a finished state. It is assumed that the reader will be cleaned up elsewhere. This is the terminal state.
- Field Detail
  - TERMINAL_BUFFER_STATES
```
public static final Set<BufferState> TERMINAL_BUFFER_STATES
```
- Method Detail
  - values
```
public static BufferState[] values()
```
    Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
    for (BufferState c : BufferState.values()) System.out.println(c);
    Returns:
    
    an array containing the constants of this enum type, in the order they are declared
  - valueOf
```
public static BufferState valueOf(String name)
```
    Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
    
    Parameters:
    
    name - the name of the enum constant to be returned.
    
    Returns:
    
    the enum constant with the specified name
    
    Throws:
    
    IllegalArgumentException - if this enum type has no constant with the specified name
    
    NullPointerException - if the argument is null
  - canAddPages
```
public boolean canAddPages()
```
  - canAddBuffers
```
public boolean canAddBuffers()
```
  - isTerminal
```
public boolean isTerminal()
```

Enum BufferState

Enum Constant Summary

Field Summary

Method Summary

Methods inherited from class java.lang.Enum

Methods inherited from class java.lang.Object

Enum Constant Detail

OPEN

NO_MORE_BUFFERS

NO_MORE_PAGES

FLUSHING

FINISHED

FAILED

Field Detail

TERMINAL_BUFFER_STATES

Method Detail

values

valueOf

canAddPages

canAddBuffers

isTerminal