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@ -195,9 +195,30 @@ public final class AuthorizationAdvisorProxyFactory
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*
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* <pre>
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* AuthorizationAdvisorProxyFactory proxyFactory = new AuthorizationAdvisorProxyFactory();
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* proxyFactory.setTargetVisitor(AuthorizationAdvisorProxyFactory.DEFAULT_VISITOR_IGNORE_VALUE_TYPES);
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* proxyFactory.setTargetVisitor(TargetVisitor.defaultsSkipValueTypes());
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* </pre>
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*
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* <p>
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* The default {@link TargetVisitor} proxies {@link Class} instances as well as
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* instances contained in reactive types (if reactor is present), collection types,
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* and other container types like {@link Optional} and {@link Supplier}.
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*
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* <p>
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* If you want to add support for another container type, you can do so in the
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* following way:
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*
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* <pre>
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* TargetVisitor functions = (factory, target) -> {
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* if (target instanceof Function function) {
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* return (input) -> factory.proxy(function.apply(input));
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* }
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* return null;
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* };
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* AuthorizationAdvisorProxyFactory proxyFactory = new AuthorizationAdvisorProxyFactory();
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* proxyFactory.setTargetVisitor(TargetVisitor.of(functions, TargetVisitor.defaultsSkipValueTypes()));
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* </pre>
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* @param visitor the visitor to use to introduce specialized behavior for a type
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* @see TargetVisitor#defaults
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*/
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public void setTargetVisitor(TargetVisitor visitor) {
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Assert.notNull(visitor, "delegate cannot be null");
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@ -260,6 +281,17 @@ public final class AuthorizationAdvisorProxyFactory
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return AuthorizationAdvisorProxyFactory.DEFAULT_VISITOR_SKIP_VALUE_TYPES;
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}
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/**
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* Compose a set of visitors. This is helpful when you are customizing for a given
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* type and still want the defaults applied for the remaining types.
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*
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* <p>
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* The resulting visitor will execute the first visitor that returns a non-null
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* value.
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* @param visitors the set of visitors
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* @return a composite that executes the first visitor that returns a non-null
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* value
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*/
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static TargetVisitor of(TargetVisitor... visitors) {
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return (proxyFactory, target) -> {
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for (TargetVisitor visitor : visitors) {
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