com.helger.servlet.async

Class ServletAsyncSpec

java.lang.Object

com.helger.servlet.async.ServletAsyncSpec

@Immutable
public class ServletAsyncSpec
extends Object

This class encapsulates all the parameters necessary to handle asynchronous servlet requests.

Since:

8.8.0

Author:

Philip Helger

Field Summary

Fields

Modifier and Type	Field and Description
static long	NO_TIMEOUT The constant defining "no timeout defined"
static ServletAsyncSpec	SYNC_SPEC The constant for synchronous invocations

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ServletAsyncSpec(boolean bAsynchronous, long nTimeoutMillis, Iterable<? extends javax.servlet.AsyncListener> aAsyncListeners) Constructor

Method Summary

Modifier and Type	Method and Description
void	applyToAsyncContext(javax.servlet.AsyncContext aAsyncCtx)
static ServletAsyncSpec	createAsync(long nTimeoutMillis, Iterable<? extends javax.servlet.AsyncListener> aAsyncListeners) Create an async spec.
static ServletAsyncSpec	createAsyncDefault() Create an async spec with 999999 (debug mode) or 30 (production) seconds timeout and no async listeners.
com.helger.commons.collection.impl.ICommonsList<javax.servlet.AsyncListener>	getAllAsyncListeners()
static ServletAsyncSpec	getSync()
long	getTimeoutMillis()
boolean	hasAsyncListeners()
boolean	hasTimeoutMillis()
boolean	isAsynchronous()
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

NO_TIMEOUT

public static final long NO_TIMEOUT

The constant defining "no timeout defined"

See Also:

Constant Field Values

SYNC_SPEC

public static final ServletAsyncSpec SYNC_SPEC

The constant for synchronous invocations

Constructor Detail

ServletAsyncSpec

protected ServletAsyncSpec(boolean bAsynchronous,
                           @CheckForSigned
                           long nTimeoutMillis,
                           @Nullable
                           Iterable<? extends javax.servlet.AsyncListener> aAsyncListeners)

Constructor

Parameters:

bAsynchronous - true for asynchronous stuff, false for synchronous spec.

nTimeoutMillis - The timeout in milliseconds. Must be ≤ 0 for synchronous usage.

aAsyncListeners - AsyncListeners to be added to the AsyncContext. Must be null for synchronous usage.

Method Detail

getTimeoutMillis

@CheckForSigned
public long getTimeoutMillis()

Returns:

The timeout in milliseconds. Only value > 0 are defined. Values ≤ 0 must be ignored.

hasTimeoutMillis

public boolean hasTimeoutMillis()

Returns:

true if a timeout is defined, false otherwise. Only asynchronous definitions can have timeouts.

isAsynchronous

public boolean isAsynchronous()

Returns:

true for asynchronous, false for synchronous.

getAllAsyncListeners

@Nonnull
 @ReturnsMutableCopy
public com.helger.commons.collection.impl.ICommonsList<javax.servlet.AsyncListener> getAllAsyncListeners()

Returns:

A copy of the list of all AsyncListener. Only contains items if this is an asynchronous spec.

hasAsyncListeners

public boolean hasAsyncListeners()

Returns:

true if any async listener is present, false otherwise.

applyToAsyncContext

public void applyToAsyncContext(@Nonnull
                                javax.servlet.AsyncContext aAsyncCtx)

toString

public String toString()

Overrides:

toString in class Object

getSync

@Nonnull
public static ServletAsyncSpec getSync()

Returns:

A synchronous spec. This always returns the constant value SYNC_SPEC. Never null.

createAsync

@Nonnull
public static ServletAsyncSpec createAsync(@CheckForSigned
                                                     long nTimeoutMillis,
                                                     @Nullable
                                                     Iterable<? extends javax.servlet.AsyncListener> aAsyncListeners)

Create an async spec.

Parameters:

nTimeoutMillis - Timeout in milliseconds. Only value > 0 are considered.

aAsyncListeners - The async listeners to use. May be null.

Returns:

A new ServletAsyncSpec and never null.

createAsyncDefault

@Nonnull
public static ServletAsyncSpec createAsyncDefault()

Create an async spec with 999999 (debug mode) or 30 (production) seconds timeout and no async listeners.

Returns:

A new ServletAsyncSpec and never null.