public abstract class BeanDeserializerModifier extends Object
BeanDeserializerFactory
to participate in constructing BeanDeserializer instances.
This is typically done by modules that want alter some aspects of deserialization
process; and is preferable to sub-classing of BeanDeserializerFactory.
Sequence in which callback methods are called is as follows:
updateProperties(com.fasterxml.jackson.databind.DeserializationConfig, com.fasterxml.jackson.databind.BeanDescription, java.util.List<com.fasterxml.jackson.databind.introspect.BeanPropertyDefinition>) is called once all property definitions are
collected, and initial filtering (by ignorable type and explicit ignoral-by-bean)
has been performed.
updateBuilder(com.fasterxml.jackson.databind.DeserializationConfig, com.fasterxml.jackson.databind.BeanDescription, com.fasterxml.jackson.databind.deser.BeanDeserializerBuilder) is called once all initial pieces for building deserializer
have been collected
modifyDeserializer(com.fasterxml.jackson.databind.DeserializationConfig, com.fasterxml.jackson.databind.BeanDescription, com.fasterxml.jackson.databind.JsonDeserializer<?>) is called after deserializer has been built
by BeanDeserializerBuilder
but before it is returned to be used
Default method implementations are "no-op"s, meaning that methods are implemented but have no effect; this is mostly so that new methods can be added in later versions.
| Constructor and Description |
|---|
BeanDeserializerModifier() |
| Modifier and Type | Method and Description |
|---|---|
JsonDeserializer<?> |
modifyDeserializer(DeserializationConfig config,
BeanDescription beanDesc,
JsonDeserializer<?> deserializer)
Method called by
BeanDeserializerFactory after constructing default
bean deserializer instance with properties collected and ordered earlier. |
BeanDeserializerBuilder |
updateBuilder(DeserializationConfig config,
BeanDescription beanDesc,
BeanDeserializerBuilder builder)
Method called by
BeanDeserializerFactory when it has collected
basic information such as tentative list of properties to deserialize. |
List<BeanPropertyDefinition> |
updateProperties(DeserializationConfig config,
BeanDescription beanDesc,
List<BeanPropertyDefinition> propDefs)
Method called by
BeanDeserializerFactory when it has collected
initial list of BeanPropertyDefinitions, and done basic by-name
and by-type filtering, but before constructing builder or actual
property handlers; or arranging order. |
public List<BeanPropertyDefinition> updateProperties(DeserializationConfig config, BeanDescription beanDesc, List<BeanPropertyDefinition> propDefs)
BeanDeserializerFactory when it has collected
initial list of BeanPropertyDefinitions, and done basic by-name
and by-type filtering, but before constructing builder or actual
property handlers; or arranging order.
The most common changes to make at this point are to completely remove
specified properties, or rename then: other modifications are easier
to make at later points.public BeanDeserializerBuilder updateBuilder(DeserializationConfig config, BeanDescription beanDesc, BeanDeserializerBuilder builder)
BeanDeserializerFactory when it has collected
basic information such as tentative list of properties to deserialize.
Implementations may choose to modify state of builder (to affect deserializer being
built), or even completely replace it (if they want to build different kind of
deserializer). Typically changes mostly concern set of properties to deserialize.public JsonDeserializer<?> modifyDeserializer(DeserializationConfig config, BeanDescription beanDesc, JsonDeserializer<?> deserializer)
BeanDeserializerFactory after constructing default
bean deserializer instance with properties collected and ordered earlier.
Implementations can modify or replace given deserializer and return deserializer
to use. Note that although initial deserializer being passed is of type
BeanDeserializer, modifiers may return deserializers of other types;
and this is why implementations must check for type before casting.Copyright © 2012 FasterXML. All Rights Reserved.