| Modifier and Type | Field and Description |
|---|---|
| private final MonetaryAmountFactory | |
| private final FieldNames |
| Access | Constructor and Description |
|---|---|
| public |
| Modifier and Type | Method and Description |
|---|---|
| public M | deserialize(final JsonParser parser, final DeserializationContext context)
Implements abstract tools. Method that can be called to ask implementation to deserialize JSON content into the value type this serializer handles. |
| public Object | deserializeWithType(final JsonParser parser, final DeserializationContext context, final TypeDeserializer deserializer)
Overrides tools. Deserialization called when type being deserialized is defined to contain additional type identifier, to allow for correctly instantiating correct subtype. |
| factory | back to summary |
|---|---|
| private final MonetaryAmountFactory<M> factory | |
| names | back to summary |
|---|---|
| private final FieldNames names | |
| MonetaryAmountDeserializer | back to summary |
|---|---|
| public MonetaryAmountDeserializer(final MonetaryAmountFactory<M> factory, final FieldNames names) | |
| deserialize | back to summary |
|---|---|
| public M deserialize(final JsonParser parser, final DeserializationContext context) Implements abstract tools. Doc from tools. Method that can be called to ask implementation to deserialize JSON content into the value type this serializer handles. Returned instance is to be constructed by method itself. Pre-condition for this method is that the parser points to the first event that is part of value to deserializer (and which is never JSON 'null' literal, more on this below): for simple types it may be the only value; and for structured types the Object start marker or a FIELD_NAME. The two possible input conditions for structured types result from polymorphism via fields. In the ordinary case, Jackson calls this method when it has encountered an OBJECT_START, and the method implementation must advance to the next token to see the first field name. If the application configures polymorphism via a field, then the object looks like the following.
{
"@class": "class name",
...
}
Jackson consumes the two tokens (the @class field name
and its value) in order to learn the class and select the deserializer.
Thus, the stream is pointing to the FIELD_NAME for the first field
after the @class. Thus, if you want your method to work correctly
both with and without polymorphism, you must begin your method with:
if (p.currentToken() == JsonToken.START_OBJECT) {
p.nextToken();
}
This results in the stream pointing to the field name, so that
the two conditions align.
Post-condition is that the parser will point to the last event that is part of deserialized value (or in case deserialization fails, event that was not recognized or usable, which may be the same event as the one it pointed to upon call).
Handling null values (JsonToken.VALUE_NULL)
| |
| deserializeWithType | back to summary |
|---|---|
| public Object deserializeWithType(final JsonParser parser, final DeserializationContext context, final TypeDeserializer deserializer) Overrides tools. Doc from tools. Deserialization called when type being deserialized is defined to contain additional type identifier, to allow for correctly instantiating correct subtype. This can be due to annotation on type (or its supertype), or due to global settings without annotations. Default implementation may work for some types, but ideally subclasses should not rely on current default implementation. Implementation is mostly provided to avoid compilation errors with older code.
| |