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Sam Brannen
2024-02-13 16:30:24 +01:00
parent 9b93c948a7
commit 10bc93c058
7 changed files with 21 additions and 15 deletions
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18
framework-docs/modules/ROOT/pages/core/expressions/language-ref/functions.adoc
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@@ -55,7 +55,7 @@ Kotlin::
----
======
You can then register and use the preceding method, as the following example shows:
You can register and use the preceding method, as the following example shows:
[tabs]
======
@@ -67,8 +67,9 @@ Java::
EvaluationContext context = SimpleEvaluationContext.forReadOnlyDataBinding().build();
context.setVariable("reverseString",
StringUtils.class.getDeclaredMethod("reverseString", String.class));
StringUtils.class.getMethod("reverseString", String.class));
// evaluates to "olleh"
String helloWorldReversed = parser.parseExpression(
"#reverseString('hello')").getValue(context, String.class);
----
@@ -80,16 +81,18 @@ Kotlin::
val parser = SpelExpressionParser()
val context = SimpleEvaluationContext.forReadOnlyDataBinding().build()
context.setVariable("reverseString", ::reverseString::javaMethod)
context.setVariable("reverseString", ::reverseString.javaMethod)
// evaluates to "olleh"
val helloWorldReversed = parser.parseExpression(
"#reverseString('hello')").getValue(context, String::class.java)
----
======
The use of `MethodHandle` is also supported. This enables potentially more efficient use
cases if the `MethodHandle` target and parameters have been fully bound prior to
registration, but partially bound handles are also supported.
A function can also be registered as a `java.lang.invoke.MethodHandle`. This enables
potentially more efficient use cases if the `MethodHandle` target and parameters have
been fully bound prior to registration; however, partially bound handles are also
supported.
Consider the `String#formatted(String, Object...)` instance method, which produces a
message according to a template and a variable number of arguments.
@@ -110,9 +113,9 @@ Java::
MethodType.methodType(String.class, Object[].class));
context.setVariable("message", mh);
// evaluates to "Simple message: <Hello World>"
String message = parser.parseExpression("#message('Simple message: <%s>', 'Hello World', 'ignored')")
.getValue(context, String.class);
//returns "Simple message: <Hello World>"
----
Kotlin::
@@ -126,6 +129,7 @@ Kotlin::
MethodType.methodType(String::class.java, Array<Any>::class.java))
context.setVariable("message", mh)
// evaluates to "Simple message: <Hello World>"
val message = parser.parseExpression("#message('Simple message: <%s>', 'Hello World', 'ignored')")
.getValue(context, String::class.java)
----

2
framework-docs/modules/ROOT/pages/web/webflux-functional.adoc
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@@ -787,7 +787,7 @@ Kotlin::
WebFlux.fn provides built-in support for serving resources.
NOTE: In addition to the capabilities described below, it is possible to implement an even more flexible resource handling thanks to
NOTE: In addition to the capabilities described below, it is possible to implement even more flexible resource handling thanks to
{spring-framework-api}++/web/reactive/function/server/RouterFunctions.html#resources(java.util.function.Function)++[`RouterFunctions#resource(java.util.function.Function)`].
[[webflux-fn-resource]]

2
framework-docs/modules/ROOT/pages/web/webmvc-functional.adoc
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@@ -765,7 +765,7 @@ Kotlin::
WebMvc.fn provides built-in support for serving resources.
NOTE: In addition to the capabilities described below, it is possible to implement an even more flexible resource handling thanks to
NOTE: In addition to the capabilities described below, it is possible to implement even more flexible resource handling thanks to
{spring-framework-api}++/web/servlet/function/RouterFunctions.html#resources(java.util.function.Function)++[`RouterFunctions#resource(java.util.function.Function)`].
[[webmvc-fn-resource]]