Package com.fasterxml.jackson.databind
Class AbstractTypeResolver
- java.lang.Object
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- com.fasterxml.jackson.databind.AbstractTypeResolver
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- Direct Known Subclasses:
SimpleAbstractTypeResolver
public abstract class AbstractTypeResolver extends Object
Defines interface for resolvers that can resolve abstract types into concrete ones; either by using static mappings, or possibly by materializing implementations dynamically.
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Constructor Summary
Constructors Constructor Description AbstractTypeResolver()
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Method Summary
All Methods Instance Methods Concrete Methods Deprecated Methods Modifier and Type Method Description JavaType
findTypeMapping(DeserializationConfig config, JavaType type)
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.JavaType
resolveAbstractType(DeserializationConfig config, BeanDescription typeDesc)
Method called to try to resolve an abstract type into concrete type (usually for purposes of deserializing), when no concrete implementation was found.JavaType
resolveAbstractType(DeserializationConfig config, JavaType type)
Deprecated.since 2.8 (may be removed from 2.9 or later)
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Method Detail
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findTypeMapping
public JavaType findTypeMapping(DeserializationConfig config, JavaType type)
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 bindingList
s).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 usetype
- Type to find mapping for- Returns:
- Type to map given input type (if mapping found) or
null
(if not).
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resolveAbstractType
@Deprecated public JavaType resolveAbstractType(DeserializationConfig config, JavaType type)
Deprecated.since 2.8 (may be removed from 2.9 or later)Older variant ofresolveAbstractType(DeserializationConfig, BeanDescription)
; obsoleted in 2.7- Parameters:
config
- Configuration in usetype
- Type to resolve- Returns:
- Resolved concrete type
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resolveAbstractType
public JavaType resolveAbstractType(DeserializationConfig config, BeanDescription typeDesc)
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 usetypeDesc
- Description of the POJO type to resolve- 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 given type
- Since:
- 2.7
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