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 package com.fasterxml.jackson.databind.jsontype;
 
Interface that defines standard API for converting types to type identifiers and vice versa. Used by type resolvers (TypeSerializer, TypeDeserializer) for converting between type and matching id; id is stored in JSON and needed for creating instances of proper subtypes when deserializing values.
public interface TypeIdResolver
    /*
    /**********************************************************
    /* Initialization/configuration methods
    /**********************************************************
     */

    
Method that will be called once before any type resolution calls; used to initialize instance with configuration. This is necessary since instances may be created via reflection, without ability to call specific constructor to pass in configuration settings.

Parameters:
baseType Base type for which this id resolver instance is used
    public void init(JavaType baseType);
    /*
    /**********************************************************
    /* Conversions between types and type ids
    /**********************************************************
     */
    
    
Method called to serialize type of the type of given value as a String to include in serialized JSON content.
    public String idFromValue(Object value);

    
Alternative method used for determining type from combination of value and type, using suggested type (that serializer provides) and possibly value of that type. Most common implementation will use suggested type as is.
    public String idFromValueAndType(Object valueClass<?> suggestedType);

    
Method that can be called to figure out type id to use for instances of base type (declared type of property). This is usually only used for fallback handling, for cases where real type information is not available for some reason.
    public String idFromBaseType();
    
    
Method called to resolve type from given type identifier.
    public JavaType typeFromId(String id);
    /*
    /**********************************************************
    /* Accessors for metadata
    /**********************************************************
     */

     
Accessor for mechanism that this resolver uses for determining type id from type. Mostly informational; not required to be called or used.
     public JsonTypeInfo.Id getMechanism();
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