io.jmix.core.impl.method

Class CachedArgumentResolverComposite

java.lang.Object

io.jmix.core.impl.method.CachedArgumentResolverComposite

All Implemented Interfaces:

ArgumentResolverComposite, MethodArgumentResolver

Direct Known Subclasses:

ContextArgumentResolverComposite, MethodArgumentResolverComposite

public abstract class CachedArgumentResolverComposite
extends java.lang.Object
implements MethodArgumentResolver, ArgumentResolverComposite

Resolves method parameters by delegating to a list of registered MethodArgumentResolvers. Previously resolved method parameters are cached for faster lookups.

Constructor Summary

Constructors

Constructor and Description
CachedArgumentResolverComposite()

Method Summary

Modifier and Type	Method and Description
abstract java.util.List<MethodArgumentResolver>	getResolvers() Return a read-only list with the contained resolvers, or an empty list.
java.lang.Object	resolveArgument(org.springframework.core.MethodParameter parameter) Iterate over registered MethodArgumentResolvers and invoke the one that supports it.
boolean	supportsParameter(org.springframework.core.MethodParameter parameter) Whether the given method parameter is supported by any registered MethodArgumentResolver.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CachedArgumentResolverComposite

public CachedArgumentResolverComposite()

Method Detail

getResolvers

public abstract java.util.List<MethodArgumentResolver> getResolvers()

Return a read-only list with the contained resolvers, or an empty list.

Specified by:

getResolvers in interface ArgumentResolverComposite

supportsParameter

public boolean supportsParameter(org.springframework.core.MethodParameter parameter)

Whether the given method parameter is supported by any registered MethodArgumentResolver.

Specified by:

supportsParameter in interface MethodArgumentResolver

Parameters:

parameter - the method parameter to check

Returns:

true if this resolver supports the supplied parameter; false otherwise

resolveArgument

@Nullable
public java.lang.Object resolveArgument(org.springframework.core.MethodParameter parameter)
                                           throws java.lang.Exception

Iterate over registered MethodArgumentResolvers and invoke the one that supports it.

Specified by:

resolveArgument in interface MethodArgumentResolver

Parameters:

parameter - the method parameter to resolve. This parameter must have previously been passed to MethodArgumentResolver.supportsParameter(org.springframework.core.MethodParameter) which must have returned true.

Returns:

the resolved argument value, or null if not resolvable

Throws:

java.lang.IllegalArgumentException - if no suitable argument resolver is found

java.lang.Exception - in case of errors with the preparation of argument values