Package org.springframework.expression.spel

Enum Class SpelCompilerMode

java.lang.Object

java.lang.Enum<SpelCompilerMode>

org.springframework.expression.spel.SpelCompilerMode

All Implemented Interfaces:

Serializable, Comparable<SpelCompilerMode>, Constable

public enum SpelCompilerMode
extends Enum<SpelCompilerMode>

Captures the possible configuration settings for a compiler that can be used when evaluating expressions.

Since:

4.1

Author:

Andy Clement

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
IMMEDIATE	In immediate mode, expressions are compiled as soon as possible (usually after 1 interpreted run).
MIXED	In mixed mode, expression evaluation silently switches between interpreted and compiled over time.
OFF	The compiler is switched off; this is the default.

Method Summary

Modifier and Type	Method	Description
static SpelCompilerMode	valueOf(String name)	Returns the enum constant of this class with the specified name.
static SpelCompilerMode[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

OFF

public static final SpelCompilerMode OFF

The compiler is switched off; this is the default.

IMMEDIATE

public static final SpelCompilerMode IMMEDIATE

In immediate mode, expressions are compiled as soon as possible (usually after 1 interpreted run). If a compiled expression fails it will throw an exception to the caller.

MIXED

public static final SpelCompilerMode MIXED

In mixed mode, expression evaluation silently switches between interpreted and compiled over time. After a number of runs the expression gets compiled. If it later fails (possibly due to inferred type information changing) then that will be caught internally and the system switches back to interpreted mode. It may subsequently compile it again later.

Method Details

values

public static SpelCompilerMode[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static SpelCompilerMode valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (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 class has no constant with the specified name

NullPointerException - if the argument is null