Enum Application.OperationMode
- java.lang.Object
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- java.lang.Enum<Application.OperationMode>
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- org.eclipse.rap.rwt.application.Application.OperationMode
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- All Implemented Interfaces:
java.io.Serializable
,java.lang.Comparable<Application.OperationMode>
- Enclosing interface:
- Application
public static enum Application.OperationMode extends java.lang.Enum<Application.OperationMode>
Instances of this class represent a mode of operation for an RWT application. The major difference between the operation modes is whether a separate UI thread is started for every session (SWT_COMPATIBILITY) or not (JEE_COMPATIBILITY).
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Enum Constant Summary
Enum Constants Enum Constant Description JEE_COMPATIBILITY
In this mode, the request thread will be marked as UI thread in SWT.SESSION_FAILOVER
This mode behaves just likeJEE_COMAPTIBILTIY
but in addition it registers the required servlet filter to support clustering.SWT_COMPATIBILITY
In this mode, a separate UI thread will be started for each user session.
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Method Summary
All Methods Static Methods Concrete Methods Modifier and Type Method Description static Application.OperationMode
valueOf(java.lang.String name)
Returns the enum constant of this type with the specified name.static Application.OperationMode[]
values()
Returns an array containing the constants of this enum type, in the order they are declared.
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Enum Constant Detail
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JEE_COMPATIBILITY
public static final Application.OperationMode JEE_COMPATIBILITY
In this mode, the request thread will be marked as UI thread in SWT. Information that is attached to the request thread, such as security or transaction contexts, can be directly accessed. This mode is compatible with the JEE specification.As its only limitation, it does not support the SWT main loop (more specifically, the method
Display.sleep()
is not implemented). As a consequence, blocking dialogs aren't possible with this operation mode. As an alternative to blocking dialogs, the classDialog
provides a non-blockingopen
method that accepts a callback to react on the closing of a dialog. Moreover, the blockingBrowser
methodsexecute
andevaluate
are not supported in this mode. A non-blockingevaluate
method exists that also accepts a callback.Unless there is a need for blocking dialogs (e.g. when using the Eclipse workbench), this mode is recommended as it is more lightweight than
SWT_COMPATIBILITY
.
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SWT_COMPATIBILITY
public static final Application.OperationMode SWT_COMPATIBILITY
In this mode, a separate UI thread will be started for each user session. All UI requests are processed in this thread while the request thread is put on hold. After processing all events, the methodDisplay.sleep()
lets the request thread continue and puts the UI thread to sleep. This approach fully supports the SWT main loop and thus also allows for blocking dialogs.Information that is attached to the request thread, such as security or transaction contexts, can only be accessed using the method
RWT.requestThreadExec(Runnable)
.
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SESSION_FAILOVER
public static final Application.OperationMode SESSION_FAILOVER
This mode behaves just likeJEE_COMAPTIBILTIY
but in addition it registers the required servlet filter to support clustering. This mode requires the servlet API 3.0.
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Method Detail
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values
public static Application.OperationMode[] 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 (Application.OperationMode c : Application.OperationMode.values()) System.out.println(c);
- Returns:
- an array containing the constants of this enum type, in the order they are declared
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valueOf
public static Application.OperationMode valueOf(java.lang.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:
java.lang.IllegalArgumentException
- if this enum type has no constant with the specified namejava.lang.NullPointerException
- if the argument is null
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