TypeBasedGuardingDynamicLinker
BeansLinker
, CompositeGuardingDynamicLinker
, CompositeTypeBasedGuardingDynamicLinker
public interface GuardingDynamicLinker
GuardingDynamicLinker
classes. They will typically set them as prioritized linkers
in the DynamicLinkerFactory
they configure for themselves, and maybe also set some as fallback
linkers
to handle language-specific "property not found" etc. conditions. Consider implementing TypeBasedGuardingDynamicLinker
interface instead of this interface for those linkers that are based on the Java class of the objects. If you need to implement language-specific type conversions, have your GuardingDynamicLinker
also implement the GuardingTypeConverterFactory
interface.
Languages can export linkers to other language runtimes for automatic discovery
using a GuardingDynamicLinkerExporter
.
Modifier and Type | Method | Description |
---|---|---|
GuardedInvocation |
getGuardedInvocation |
Creates a guarded invocation appropriate for a particular invocation with the specified arguments at a call site. |
GuardedInvocation getGuardedInvocation(LinkRequest linkRequest, LinkerServices linkerServices) throws Exception
linkRequest
- the object describing the request for linking a particular invocationlinkerServices
- linker servicesThrowable
subclass that describes an expected exception condition that also triggers relinking (often it is faster to rely on an infrequent but expected ClassCastException
than on an always evaluated instanceof
guard). While the linker must produce an invocation with parameter types matching those in the call site descriptor of the link request, it should not try to match the return type expected at the call site except when it can do it with only the conversions that lose neither precision nor magnitude, see LinkerServices.asTypeLosslessReturn(MethodHandle, MethodType)
for further explanation.Exception
- if the operation fails for whatever reason
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https://docs.oracle.com/en/java/javase/21/docs/api/jdk.dynalink/jdk/dynalink/linker/GuardingDynamicLinker.html