Examples of com.fasterxml.jackson.databind.jsontype.TypeDeserializer

Package com.fasterxml.jackson.databind.jsontype

Examples of com.fasterxml.jackson.databind.jsontype.TypeDeserializer

com.fasterxml.jackson.databind.jsontype.TypeDeserializer
Interface for deserializing type information from JSON content, to type-safely deserialize data into correct polymorphic instance (when type inclusion has been enabled for type handled).
Separate deserialization methods are needed because serialized form for inclusion mechanism {@link As#PROPERTY}is slighty different if value is not expressed as JSON Object: and as such both type deserializer and serializer need to JSON Object form (array, object or other (== scalar)) being used.

        // Very first thing: is deserializer hard-coded for elements?
        JsonDeserializer<Object> contentDeser = contentType.getValueHandler();
        final DeserializationConfig config = ctxt.getConfig();


        // Then optional type info (1.5): if type has been resolved, we may already know type deserializer:
        TypeDeserializer contentTypeDeser = contentType.getTypeHandler();
        // but if not, may still be possible to find:
        if (contentTypeDeser == null) {
            contentTypeDeser = findTypeDeserializer(config, contentType);
        }
        JsonDeserializer<?> deser = _findCustomCollectionLikeDeserializer(type, config, beanDesc,

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        JsonDeserializer<Object> contentDeser = (JsonDeserializer<Object>) contentType.getValueHandler();
        
        // Ok: need a key deserializer (null indicates 'default' here)
        KeyDeserializer keyDes = (KeyDeserializer) keyType.getValueHandler();
        // Then optional type info (1.5); either attached to type, or resolved separately:
        TypeDeserializer contentTypeDeser = contentType.getTypeHandler();
        // but if not, may still be possible to find:
        if (contentTypeDeser == null) {
            contentTypeDeser = findTypeDeserializer(config, contentType);
        }

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        if (keyDes == null) {
            keyDes = p.findKeyDeserializer(config, keyType, property);
        }
        */
        // Then optional type info (1.5); either attached to type, or resolve separately:
        TypeDeserializer contentTypeDeser = contentType.getTypeHandler();
        // but if not, may still be possible to find:
        if (contentTypeDeser == null) {
            contentTypeDeser = findTypeDeserializer(config, contentType);
        }
        JsonDeserializer<?> deser = _findCustomMapLikeDeserializer(type, config,

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             *    information to use for polymorphic members; and specifically types for
             *    collection values (contents).
             *    ... but only applies to members (fields, methods), not classes
             */
            if (member instanceof AnnotatedMember) {
              TypeDeserializer contentTypeDeser = findPropertyContentTypeDeserializer(
                      ctxt.getConfig(), type, (AnnotatedMember) member);              
              if (contentTypeDeser != null) {
                  type = type.withContentTypeHandler(contentTypeDeser);
              }
            }
        }
        TypeDeserializer valueTypeDeser;


        if (member instanceof AnnotatedMember) { // JAXB allows per-property annotations
            valueTypeDeser = findPropertyTypeDeserializer(ctxt.getConfig(),
                    type, (AnnotatedMember) member);
        } else { // classes just have Jackson annotations

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        if (vd == null) {
            vd = ctxt.findContextualValueDeserializer(_mapType.getContentType(), property);
        } else { // if directly assigned, probably not yet contextual, so:
            vd = ctxt.handleSecondaryContextualization(vd, property);
        }
        TypeDeserializer vtd = _valueTypeDeserializer;
        if (vtd != null) {
            vtd = vtd.forProperty(property);
        }
        HashSet<String> ignored = _ignorableProperties;
        AnnotationIntrospector intr = ctxt.getAnnotationIntrospector();
        if (intr != null && property != null) {
            String[] moreToIgnore = intr.findPropertiesToIgnore(property.getMember());

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        if (t == JsonToken.START_OBJECT) {
            t = jp.nextToken();
        }
        final KeyDeserializer keyDes = _keyDeserializer;
        final JsonDeserializer<Object> valueDes = _valueDeserializer;
        final TypeDeserializer typeDeser = _valueTypeDeserializer;


        MapReferringAccumulator referringAccumulator = null;
        boolean useObjectId = valueDes.getObjectIdReader() != null;
        if (useObjectId) {
            referringAccumulator = new MapReferringAccumulator(_mapType.getContentType().getRawClass(), result);

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        JsonToken t = jp.getCurrentToken();
        if (t == JsonToken.START_OBJECT) {
            t = jp.nextToken();
        }
        final JsonDeserializer<Object> valueDes = _valueDeserializer;
        final TypeDeserializer typeDeser = _valueTypeDeserializer;
        MapReferringAccumulator referringAccumulator = null;
        boolean useObjectId = valueDes.getObjectIdReader() != null;
        if (useObjectId) {
            referringAccumulator = new MapReferringAccumulator(_mapType.getContentType().getRawClass(), result);
        }

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        JsonToken t = jp.getCurrentToken();
        if (t == JsonToken.START_OBJECT) {
            t = jp.nextToken();
        }
        final JsonDeserializer<Object> valueDes = _valueDeserializer;
        final TypeDeserializer typeDeser = _valueTypeDeserializer;
        for (; t == JsonToken.FIELD_NAME; t = jp.nextToken()) {
            String propName = jp.getCurrentName();
            t = jp.nextToken(); // to get to value
            if (_ignorableProperties != null && _ignorableProperties.contains(propName)) {
                jp.skipChildren(); // and skip it (in case of array/object)

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        if (vd == null) {
            vd = ctxt.findContextualValueDeserializer(_mapType.getContentType(), property);
        } else { // if directly assigned, probably not yet contextual, so:
            vd = ctxt.handleSecondaryContextualization(vd, property);
        }
        TypeDeserializer vtd = _valueTypeDeserializer;
        if (vtd != null) {
            vtd = vtd.forProperty(property);
        }
        return withResolved(kd, vd, vtd);
    }

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        if (jp.getCurrentToken() != JsonToken.START_OBJECT) {
            throw ctxt.mappingException(EnumMap.class);
        }
        EnumMap result = constructMap();
        final JsonDeserializer<Object> valueDes = _valueDeserializer;
        final TypeDeserializer typeDeser = _valueTypeDeserializer;


        while ((jp.nextToken()) != JsonToken.END_OBJECT) {
            String keyName = jp.getCurrentName(); // just for error message
            // but we need to let key deserializer handle it separately, nonetheless
            Enum<?> key = _keyDeserializer.deserialize(jp, ctxt);

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