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 package com.fasterxml.jackson.databind;


Defines interface for resolvers that can resolve abstract types into concrete ones; either by using static mappings, or possibly by materializing implementations dynamically.
 
 public abstract class AbstractTypeResolver
{
    
Try to locate a subtype for given abstract type, to either resolve to a concrete type, or at least to a more-specific (and hopefully supported) abstract type, one which may have registered deserializers. Method is called before trying to locate registered deserializers (as well as standard abstract type defaulting that core Jackson does), so it is typically implemented to add custom mappings of common abstract types (like specify which concrete implementation to use for binding java.util.Lists).

Note that this method does not necessarily have to do full resolution of bindings; that is, it is legal to return type that could be further resolved: caller is expected to keep calling this method on registered resolvers, until a concrete type is located.

Parameters:
config Configuration in use; should always be of type DeserializationConfig
    public JavaType findTypeMapping(DeserializationConfig configJavaType type) {
        return null;
    }
    
    
Method called to try to resolve an abstract type into concrete type (usually for purposes of deserializing), when no concrete implementation was found. It will be called after checking all other possibilities, including defaulting.

Parameters:
config Configuration in use; should always be of type DeserializationConfig
type Type for which materialization maybe needed
Returns:
Resolved concrete type (which should retain generic type parameters of input type, if any), if resolution succeeds; null if resolver does not know how to resolve type
            JavaType type) {
        return null;
    }
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