org.springframework.expression.spel

枚举 SpelCompilerMode

java.lang.Object

java.lang.Enum<SpelCompilerMode>

org.springframework.expression.spel.SpelCompilerMode

所有已实现的接口:

Serializable, Comparable<SpelCompilerMode>

public enum SpelCompilerMode
extends Enum<SpelCompilerMode>

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

从以下版本开始:

4.1

作者:

Andy Clement

枚举常量概要

枚举常量

枚举常量和说明
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.

方法概要

限定符和类型	方法和说明
static SpelCompilerMode	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static SpelCompilerMode[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

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

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

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.

方法详细资料

values

public static SpelCompilerMode[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (SpelCompilerMode c : SpelCompilerMode.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static SpelCompilerMode valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值