Package org.codehaus.jackson.map.deser.std

Class MapDeserializer

  • All Implemented Interfaces:
    ResolvableDeserializer
    Direct Known Subclasses:
    MapDeserializer
    public class MapDeserializer
extends ContainerDeserializerBase<java.util.Map<java.lang.Object,​java.lang.Object>>
implements ResolvableDeserializer
    Basic serializer that can take Json "Object" structure and construct a Map instance, with typed contents.

    Note: for untyped content (one indicated by passing Object.class as the type), UntypedObjectDeserializer is used instead. It can also construct Maps, but not with specific POJO types, only other containers and primitives/wrappers.

    • Field Detail

      • _mapType

        protected final JavaType _mapType

      • _keyDeserializer

        protected final KeyDeserializer _keyDeserializer
        Key deserializer used, if not null. If null, String from JSON content is used as is.

      • _valueDeserializer

        protected final JsonDeserializer<java.lang.Object> _valueDeserializer
        Value deserializer.

      • _valueTypeDeserializer

        protected final TypeDeserializer _valueTypeDeserializer
        If value instances have polymorphic type information, this is the type deserializer that can handle it

      • _valueInstantiator

        protected final ValueInstantiator _valueInstantiator
        Since:
        1.9

      • _hasDefaultCreator

        protected final boolean _hasDefaultCreator
        Since:
        1.9

      • _propertyBasedCreator

        protected PropertyBasedCreator _propertyBasedCreator
        If the Map is to be instantiated using non-default constructor or factory method that takes one or more named properties as argument(s), this creator is used for instantiation.

      • _delegateDeserializer

        protected JsonDeserializer<java.lang.Object> _delegateDeserializer
        Deserializer that is used iff delegate-based creator is to be used for deserializing from JSON Object.

      • _ignorableProperties

        protected java.util.HashSet<java.lang.String> _ignorableProperties

    • Constructor Detail

      • MapDeserializer

        @Deprecated
protected MapDeserializer​(JavaType mapType,
                          java.lang.reflect.Constructor<java.util.Map<java.lang.Object,​java.lang.Object>> defCtor,
                          KeyDeserializer keyDeser,
                          JsonDeserializer<java.lang.Object> valueDeser,
                          TypeDeserializer valueTypeDeser)
        Deprecated.
        Since 1.9, use variant that takes ValueInstantiator

      • MapDeserializer

        protected MapDeserializer​(MapDeserializer src)
        Copy-constructor that can be used by sub-classes to allow copy-on-write styling copying of settings of an existing instance.
        Since:
        1.9

    • Method Detail

      • setIgnorableProperties

        public void setIgnorableProperties​(java.lang.String[] ignorable)

      • deserialize

        public java.util.Map<java.lang.Object,​java.lang.Object> deserialize​(JsonParser jp,
                                                                          DeserializationContext ctxt)
                                                                   throws java.io.IOException,
                                                                          JsonProcessingException
        Description copied from class: JsonDeserializer
        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. 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).

        Note that this method is never called for JSON null literal, and thus deserializers need (and should) not check for it.

        Specified by:
        deserialize in class JsonDeserializer<java.util.Map<java.lang.Object,​java.lang.Object>>
        Parameters:
        jp - Parsed used for reading JSON content
        ctxt - Context that can be used to access information about this deserialization activity.
        Returns:
        Deserializer value
        Throws:
        java.io.IOException
        JsonProcessingException

      • deserialize

        public java.util.Map<java.lang.Object,​java.lang.Object> deserialize​(JsonParser jp,
                                                                          DeserializationContext ctxt,
                                                                          java.util.Map<java.lang.Object,​java.lang.Object> result)
                                                                   throws java.io.IOException,
                                                                          JsonProcessingException
        Description copied from class: JsonDeserializer
        Alternate deserialization method (compared to the most commonly used, JsonDeserializer.deserialize(JsonParser, DeserializationContext)), which takes in initialized value instance, to be configured and/or populated by deserializer. Method is not necessarily used for all supported types; most commonly it is used for Collections and Maps.

        Default implementation just throws UnsupportedOperationException, to indicate that types that do not explicitly add support do not expect to get the call.

        Overrides:
        deserialize in class JsonDeserializer<java.util.Map<java.lang.Object,​java.lang.Object>>
        Throws:
        java.io.IOException
        JsonProcessingException

      • getMapClass

        public final java.lang.Class<?> getMapClass()

      • getValueType

        public JavaType getValueType()
        Description copied from class: StdDeserializer
        Exact structured type deserializer handles, if known.

        Default implementation just returns null.

        Overrides:
        getValueType in class StdDeserializer<java.util.Map<java.lang.Object,​java.lang.Object>>

      • wrapAndThrow

        protected void wrapAndThrow​(java.lang.Throwable t,
                            java.lang.Object ref)
                     throws java.io.IOException
        Throws:
        java.io.IOException