Polishing
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@ -55,7 +55,7 @@ Kotlin::
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----
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======
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You can then register and use the preceding method, as the following example shows:
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You can register and use the preceding method, as the following example shows:
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[tabs]
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======
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@ -67,8 +67,9 @@ Java::
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EvaluationContext context = SimpleEvaluationContext.forReadOnlyDataBinding().build();
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context.setVariable("reverseString",
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StringUtils.class.getDeclaredMethod("reverseString", String.class));
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StringUtils.class.getMethod("reverseString", String.class));
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// evaluates to "olleh"
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String helloWorldReversed = parser.parseExpression(
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"#reverseString('hello')").getValue(context, String.class);
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----
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@ -80,16 +81,18 @@ Kotlin::
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val parser = SpelExpressionParser()
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val context = SimpleEvaluationContext.forReadOnlyDataBinding().build()
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context.setVariable("reverseString", ::reverseString::javaMethod)
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context.setVariable("reverseString", ::reverseString.javaMethod)
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// evaluates to "olleh"
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val helloWorldReversed = parser.parseExpression(
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"#reverseString('hello')").getValue(context, String::class.java)
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----
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======
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The use of `MethodHandle` is also supported. This enables potentially more efficient use
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cases if the `MethodHandle` target and parameters have been fully bound prior to
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registration, but partially bound handles are also supported.
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A function can also be registered as a `java.lang.invoke.MethodHandle`. This enables
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potentially more efficient use cases if the `MethodHandle` target and parameters have
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been fully bound prior to registration; however, partially bound handles are also
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supported.
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Consider the `String#formatted(String, Object...)` instance method, which produces a
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message according to a template and a variable number of arguments.
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@ -110,9 +113,9 @@ Java::
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MethodType.methodType(String.class, Object[].class));
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context.setVariable("message", mh);
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// evaluates to "Simple message: <Hello World>"
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String message = parser.parseExpression("#message('Simple message: <%s>', 'Hello World', 'ignored')")
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.getValue(context, String.class);
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//returns "Simple message: <Hello World>"
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----
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Kotlin::
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@ -126,6 +129,7 @@ Kotlin::
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MethodType.methodType(String::class.java, Array<Any>::class.java))
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context.setVariable("message", mh)
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// evaluates to "Simple message: <Hello World>"
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val message = parser.parseExpression("#message('Simple message: <%s>', 'Hello World', 'ignored')")
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.getValue(context, String::class.java)
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----
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@ -787,7 +787,7 @@ Kotlin::
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WebFlux.fn provides built-in support for serving resources.
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NOTE: In addition to the capabilities described below, it is possible to implement an even more flexible resource handling thanks to
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NOTE: In addition to the capabilities described below, it is possible to implement even more flexible resource handling thanks to
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{spring-framework-api}++/web/reactive/function/server/RouterFunctions.html#resources(java.util.function.Function)++[`RouterFunctions#resource(java.util.function.Function)`].
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[[webflux-fn-resource]]
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@ -765,7 +765,7 @@ Kotlin::
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WebMvc.fn provides built-in support for serving resources.
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NOTE: In addition to the capabilities described below, it is possible to implement an even more flexible resource handling thanks to
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NOTE: In addition to the capabilities described below, it is possible to implement even more flexible resource handling thanks to
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{spring-framework-api}++/web/servlet/function/RouterFunctions.html#resources(java.util.function.Function)++[`RouterFunctions#resource(java.util.function.Function)`].
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[[webmvc-fn-resource]]
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@ -40,7 +40,7 @@ import org.springframework.util.ReflectionUtils;
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/**
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* Register the necessary reflection hints so that the specified type can be
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* bound at runtime. Fields, constructors, properties and record components
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* bound at runtime. Fields, constructors, properties, and record components
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* are registered, except for a set of types like those in the {@code java.}
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* package where just the type is registered. Types are discovered transitively
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* on properties and record components, and generic types are registered as well.
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@ -200,9 +200,9 @@ public class BindingReflectionHintsRegistrar {
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}
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private void registerHintsForClassAttributes(ReflectionHints hints, MergedAnnotation<Annotation> annotation) {
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annotation.getRoot().asMap().forEach((key,value) -> {
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annotation.getRoot().asMap().forEach((attributeName, value) -> {
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if (value instanceof Class<?> classValue && value != Void.class) {
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if (key.equals("builder")) {
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if (attributeName.equals("builder")) {
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hints.registerType(classValue, MemberCategory.INVOKE_DECLARED_CONSTRUCTORS,
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MemberCategory.INVOKE_DECLARED_METHODS);
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}
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@ -121,6 +121,7 @@ public interface EvaluationContext {
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* configuration for the context.
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* @param name the name of the variable to set
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* @param value the value to be placed in the variable
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* @see #lookupVariable(String)
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*/
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void setVariable(String name, @Nullable Object value);
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@ -87,6 +87,7 @@ import org.springframework.lang.Nullable;
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* @see StandardEvaluationContext
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* @see StandardTypeConverter
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* @see DataBindingPropertyAccessor
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* @see DataBindingMethodResolver
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*/
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public final class SimpleEvaluationContext implements EvaluationContext {
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@ -269,7 +269,7 @@ public class StandardEvaluationContext implements EvaluationContext {
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}
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/**
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* Set multiple named variables in this evaluation context to given values.
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* Set multiple named variables in this evaluation context to the specified values.
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* <p>This is a convenience variant of {@link #setVariable(String, Object)}.
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* @param variables the names and values of the variables to set
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* @see #setVariable(String, Object)
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@ -284,7 +284,7 @@ public class StandardEvaluationContext implements EvaluationContext {
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* evaluation context, as populated by {@link #setVariable(String, Object)}.
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* Make sure that specified function names and variable names do not overlap.
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* @param name the name of the function
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* @param method the Method to register
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* @param method the {@code Method} to register
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* @see #registerFunction(String, MethodHandle)
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*/
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public void registerFunction(String name, Method method) {
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@ -297,7 +297,7 @@ public class StandardEvaluationContext implements EvaluationContext {
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* evaluation context, as populated by {@link #setVariable(String, Object)}.
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* Make sure that specified function names and variable names do not overlap.
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* @param name the name of the function
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* @param methodHandle the MethodHandle to register
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* @param methodHandle the {@link MethodHandle} to register
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* @since 6.1
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* @see #registerFunction(String, Method)
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*/
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