/** * Method that does the heavy lifting of checking for per-type annotations, find out full type, * and figure out which actual factory method to call. */ @SuppressWarnings("unchecked") protected JsonDeserializer<Object> _createDeserializer( DeserializationContext ctxt, DeserializerFactory factory, JavaType type) throws JsonMappingException { final DeserializationConfig config = ctxt.getConfig(); // First things first: do we need to use abstract type mapping? if (type.isAbstract() || type.isMapLikeType() || type.isCollectionLikeType()) { type = factory.mapAbstractType(config, type); } BeanDescription beanDesc = config.introspect(type); // Then: does type define explicit deserializer to use, with annotation(s)? JsonDeserializer<Object> deser = findDeserializerFromAnnotation(ctxt, beanDesc.getClassInfo()); if (deser != null) { return deser; } // If not, may have further type-modification annotations to check: JavaType newType = modifyTypeByAnnotation(ctxt, beanDesc.getClassInfo(), type); if (newType != type) { type = newType; beanDesc = config.introspect(newType); } // We may also have a Builder type to consider... Class<?> builder = beanDesc.findPOJOBuilder(); if (builder != null) { return (JsonDeserializer<Object>) factory.createBuilderBasedDeserializer(ctxt, type, beanDesc, builder); } // Or perhaps a Converter? Converter<Object, Object> conv = beanDesc.findDeserializationConverter(); if (conv == null) { // nope, just construct in normal way return (JsonDeserializer<Object>) _createDeserializer2(ctxt, factory, type, beanDesc); } // otherwise need to do bit of introspection JavaType delegateType = conv.getInputType(ctxt.getTypeFactory()); return new StdDelegatingDeserializer<Object>( conv, delegateType, _createDeserializer2(ctxt, factory, delegateType, beanDesc)); }
protected JsonDeserializer<?> _createDeserializer2( DeserializationContext ctxt, DeserializerFactory factory, JavaType type, BeanDescription beanDesc) throws JsonMappingException { final DeserializationConfig config = ctxt.getConfig(); // If not, let's see which factory method to use: if (type.isEnumType()) { return factory.createEnumDeserializer(ctxt, type, beanDesc); } if (type.isContainerType()) { if (type.isArrayType()) { return factory.createArrayDeserializer(ctxt, (ArrayType) type, beanDesc); } if (type.isMapLikeType()) { MapLikeType mlt = (MapLikeType) type; if (mlt.isTrueMapType()) { return factory.createMapDeserializer(ctxt, (MapType) mlt, beanDesc); } return factory.createMapLikeDeserializer(ctxt, mlt, beanDesc); } if (type.isCollectionLikeType()) { /* 03-Aug-2012, tatu: As per [Issue#40], one exception is if shape * is to be Shape.OBJECT. Ideally we'd determine it bit later on * (to allow custom handler checks), but that won't work for other * reasons. So do it here. */ JsonFormat.Value format = beanDesc.findExpectedFormat(null); if (format == null || format.getShape() != JsonFormat.Shape.OBJECT) { CollectionLikeType clt = (CollectionLikeType) type; if (clt.isTrueCollectionType()) { return factory.createCollectionDeserializer(ctxt, (CollectionType) clt, beanDesc); } return factory.createCollectionLikeDeserializer(ctxt, clt, beanDesc); } } } if (JsonNode.class.isAssignableFrom(type.getRawClass())) { return factory.createTreeDeserializer(config, type, beanDesc); } return factory.createBeanDeserializer(ctxt, type, beanDesc); }