public Class GuavaOptionalDeserializer

Since

2.9

Overrides com.fasterxml.jackson.databind.deser.std.ReferenceTypeDeserializer.getEmptyValue.

Doc from com.fasterxml.jackson.databind.JsonDeserializer.getEmptyValue.

Method called to determine value to be used for "empty" values (most commonly when deserializing from empty JSON Strings). Usually this is same as getNullValue (which in turn is usually simply Java null), but it can be overridden for specific types. Or, if type should never be converted from empty String, method can also throw an exception.

This method may be called once, or multiple times, depending on what getEmptyAccessPattern() returns.

Default implementation simply calls getNullValue and returns value.

Annotations

@Override

Implements abstract com.fasterxml.jackson.databind.deser.std.ReferenceTypeDeserializer.getNullValue.

Implements com.fasterxml.jackson.databind.deser.NullValueProvider.getNullValue.

Doc from com.fasterxml.jackson.databind.JsonDeserializer.getNullValue.

Method that can be called to determine value to be used for representing null values (values deserialized when JSON token is JsonToken#VALUE_NULL). Usually this is simply Java null, but for some types (especially primitives) it may be necessary to use non-null values.

This method may be called once, or multiple times, depending on what getNullAccessPattern() returns.

Default implementation simply returns null.

Annotations

@Override

Implements abstract com.fasterxml.jackson.databind.deser.std.ReferenceTypeDeserializer.getReferenced.

Doc from com.fasterxml.jackson.databind.deser.std.ReferenceTypeDeserializer.getReferenced.

Method that may be called to find contents of specified reference, if any; or `null` if none. Note that method should never fail, so for types that use concept of "absence" vs "presence", `null` is to be returned for both "absent" and "reference to `null`" cases.

Annotations

@Override

Implements abstract com.fasterxml.jackson.databind.deser.std.ReferenceTypeDeserializer.referenceValue.

Annotations

@Override

Implements abstract com.fasterxml.jackson.databind.deser.std.ReferenceTypeDeserializer.updateReference.

Doc from com.fasterxml.jackson.databind.deser.std.ReferenceTypeDeserializer.updateReference.

Method called in case of "merging update", in which we should try update reference instead of creating a new one. If this does not succeed, should just create a new instance.

Annotations

@Override

Implements abstract com.fasterxml.jackson.databind.deser.std.ReferenceTypeDeserializer.withResolved.

Doc from com.fasterxml.jackson.databind.deser.std.ReferenceTypeDeserializer.withResolved.

Mutant factory method called when changes are needed; should construct newly configured instance with new values as indicated.

Annotations

@Override