コード例 #1
0
  /**
   * Method for constructing a bean deserializer that uses specified intermediate Builder for
   * binding data, and construction of the value instance. Note that implementation is mostly copied
   * from the regular BeanDeserializer build method.
   */
  @SuppressWarnings("unchecked")
  protected JsonDeserializer<Object> buildBuilderBasedDeserializer(
      DeserializationContext ctxt, JavaType valueType, BeanDescription builderDesc)
      throws JsonMappingException {
    // Creators, anyone? (to create builder itself)
    ValueInstantiator valueInstantiator = findValueInstantiator(ctxt, builderDesc);
    final DeserializationConfig config = ctxt.getConfig();
    BeanDeserializerBuilder builder = constructBeanDeserializerBuilder(ctxt, builderDesc);
    builder.setValueInstantiator(valueInstantiator);
    // And then "with methods" for deserializing from JSON Object
    addBeanProps(ctxt, builderDesc, builder);
    addObjectIdReader(ctxt, builderDesc, builder);

    // managed/back reference fields/setters need special handling... first part
    addReferenceProperties(ctxt, builderDesc, builder);
    addInjectables(ctxt, builderDesc, builder);

    JsonPOJOBuilder.Value builderConfig = builderDesc.findPOJOBuilderConfig();
    final String buildMethodName =
        (builderConfig == null) ? "build" : builderConfig.buildMethodName;

    // and lastly, find build method to use:
    AnnotatedMethod buildMethod = builderDesc.findMethod(buildMethodName, null);
    if (buildMethod != null) { // note: can't yet throw error; may be given build method
      if (config.canOverrideAccessModifiers()) {
        ClassUtil.checkAndFixAccess(buildMethod.getMember());
      }
    }
    builder.setPOJOBuilder(buildMethod, builderConfig);
    // this may give us more information...
    if (_factoryConfig.hasDeserializerModifiers()) {
      for (BeanDeserializerModifier mod : _factoryConfig.deserializerModifiers()) {
        builder = mod.updateBuilder(config, builderDesc, builder);
      }
    }
    JsonDeserializer<?> deserializer = builder.buildBuilderBased(valueType, buildMethodName);

    // [JACKSON-440]: may have modifier(s) that wants to modify or replace serializer we just built:
    if (_factoryConfig.hasDeserializerModifiers()) {
      for (BeanDeserializerModifier mod : _factoryConfig.deserializerModifiers()) {
        deserializer = mod.modifyDeserializer(config, builderDesc, deserializer);
      }
    }
    return (JsonDeserializer<Object>) deserializer;
  }
コード例 #2
0
  /**
   * Method that is to actually build a bean deserializer instance. All basic sanity checks have
   * been done to know that what we have may be a valid bean type, and that there are no default
   * simple deserializers.
   */
  @SuppressWarnings("unchecked")
  public JsonDeserializer<Object> buildBeanDeserializer(
      DeserializationContext ctxt, JavaType type, BeanDescription beanDesc)
      throws JsonMappingException {
    // First: check what creators we can use, if any
    ValueInstantiator valueInstantiator = findValueInstantiator(ctxt, beanDesc);
    BeanDeserializerBuilder builder = constructBeanDeserializerBuilder(ctxt, beanDesc);
    builder.setValueInstantiator(valueInstantiator);
    // And then setters for deserializing from JSON Object
    addBeanProps(ctxt, beanDesc, builder);
    addObjectIdReader(ctxt, beanDesc, builder);

    // managed/back reference fields/setters need special handling... first part
    addReferenceProperties(ctxt, beanDesc, builder);
    addInjectables(ctxt, beanDesc, builder);

    final DeserializationConfig config = ctxt.getConfig();
    // [JACKSON-440]: update builder now that all information is in?
    if (_factoryConfig.hasDeserializerModifiers()) {
      for (BeanDeserializerModifier mod : _factoryConfig.deserializerModifiers()) {
        builder = mod.updateBuilder(config, beanDesc, builder);
      }
    }
    JsonDeserializer<?> deserializer;

    /* 19-Mar-2012, tatu: This check used to be done earlier; but we have to defer
     *   it a bit to collect information on ObjectIdReader, for example.
     */
    if (type.isAbstract() && !valueInstantiator.canInstantiate()) {
      deserializer = builder.buildAbstract();
    } else {
      deserializer = builder.build();
    }

    // [JACKSON-440]: may have modifier(s) that wants to modify or replace serializer we just built:
    if (_factoryConfig.hasDeserializerModifiers()) {
      for (BeanDeserializerModifier mod : _factoryConfig.deserializerModifiers()) {
        deserializer = mod.modifyDeserializer(config, beanDesc, deserializer);
      }
    }
    return (JsonDeserializer<Object>) deserializer;
  }
コード例 #3
0
  protected void addObjectIdReader(
      DeserializationContext ctxt, BeanDescription beanDesc, BeanDeserializerBuilder builder)
      throws JsonMappingException {
    ObjectIdInfo objectIdInfo = beanDesc.getObjectIdInfo();
    if (objectIdInfo == null) {
      return;
    }
    Class<?> implClass = objectIdInfo.getGeneratorType();
    JavaType idType;
    SettableBeanProperty idProp;
    ObjectIdGenerator<?> gen;

    // Just one special case: Property-based generator is trickier
    if (implClass
        == ObjectIdGenerators.PropertyGenerator.class) { // most special one, needs extra work
      String propName = objectIdInfo.getPropertyName();
      idProp = builder.findProperty(propName);
      if (idProp == null) {
        throw new IllegalArgumentException(
            "Invalid Object Id definition for "
                + beanDesc.getBeanClass().getName()
                + ": can not find property with name '"
                + propName
                + "'");
      }
      idType = idProp.getType();
      gen = new PropertyBasedObjectIdGenerator(objectIdInfo.getScope());
    } else {
      JavaType type = ctxt.constructType(implClass);
      idType = ctxt.getTypeFactory().findTypeParameters(type, ObjectIdGenerator.class)[0];
      idProp = null;
      gen = ctxt.objectIdGeneratorInstance(beanDesc.getClassInfo(), objectIdInfo);
    }
    // also: unlike with value deserializers, let's just resolve one we need here
    JsonDeserializer<?> deser = ctxt.findRootValueDeserializer(idType);
    builder.setObjectIdReader(
        ObjectIdReader.construct(idType, objectIdInfo.getPropertyName(), gen, deser, idProp));
  }
コード例 #4
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 /**
  * Method called locate all members used for value injection (if any), constructor {@link
  * com.fasterxml.jackson.databind.deser.impl.ValueInjector} instances, and add them to builder.
  */
 protected void addInjectables(
     DeserializationContext ctxt, BeanDescription beanDesc, BeanDeserializerBuilder builder)
     throws JsonMappingException {
   Map<Object, AnnotatedMember> raw = beanDesc.findInjectables();
   if (raw != null) {
     boolean fixAccess = ctxt.canOverrideAccessModifiers();
     for (Map.Entry<Object, AnnotatedMember> entry : raw.entrySet()) {
       AnnotatedMember m = entry.getValue();
       if (fixAccess) {
         m.fixAccess(); // to ensure we can call it
       }
       builder.addInjectable(
           m.getName(),
           beanDesc.resolveType(m.getGenericType()),
           beanDesc.getClassAnnotations(),
           m,
           entry.getKey());
     }
   }
 }
コード例 #5
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 /**
  * Method that will find if bean has any managed- or back-reference properties, and if so add them
  * to bean, to be linked during resolution phase.
  */
 protected void addReferenceProperties(
     DeserializationContext ctxt, BeanDescription beanDesc, BeanDeserializerBuilder builder)
     throws JsonMappingException {
   // and then back references, not necessarily found as regular properties
   Map<String, AnnotatedMember> refs = beanDesc.findBackReferenceProperties();
   if (refs != null) {
     for (Map.Entry<String, AnnotatedMember> en : refs.entrySet()) {
       String name = en.getKey();
       AnnotatedMember m = en.getValue();
       Type genericType;
       if (m instanceof AnnotatedMethod) {
         genericType = ((AnnotatedMethod) m).getGenericParameterType(0);
       } else {
         genericType = m.getRawType();
       }
       SimpleBeanPropertyDefinition propDef = new SimpleBeanPropertyDefinition(m);
       builder.addBackReferenceProperty(
           name, constructSettableProperty(ctxt, beanDesc, propDef, genericType));
     }
   }
 }
コード例 #6
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  /**
   * Helper method called to filter out explicit ignored properties, as well as properties that have
   * "ignorable types". Note that this will not remove properties that have no setters.
   */
  protected List<BeanPropertyDefinition> filterBeanProps(
      DeserializationContext ctxt,
      BeanDescription beanDesc,
      BeanDeserializerBuilder builder,
      List<BeanPropertyDefinition> propDefsIn,
      Set<String> ignored)
      throws JsonMappingException {
    ArrayList<BeanPropertyDefinition> result =
        new ArrayList<BeanPropertyDefinition>(Math.max(4, propDefsIn.size()));
    HashMap<Class<?>, Boolean> ignoredTypes = new HashMap<Class<?>, Boolean>();
    // These are all valid setters, but we do need to introspect bit more
    for (BeanPropertyDefinition property : propDefsIn) {
      String name = property.getName();
      if (ignored.contains(
          name)) { // explicit ignoral using @JsonIgnoreProperties needs to block entries
        continue;
      }
      if (!property.hasConstructorParameter()) { // never skip constructor params
        Class<?> rawPropertyType = null;
        if (property.hasSetter()) {
          rawPropertyType = property.getSetter().getRawParameterType(0);
        } else if (property.hasField()) {
          rawPropertyType = property.getField().getRawType();
        }

        // [JACKSON-429] Some types are declared as ignorable as well
        if ((rawPropertyType != null)
            && (isIgnorableType(ctxt.getConfig(), beanDesc, rawPropertyType, ignoredTypes))) {
          // important: make ignorable, to avoid errors if value is actually seen
          builder.addIgnorable(name);
          continue;
        }
      }
      result.add(property);
    }
    return result;
  }
コード例 #7
0
  /**
   * Method called to figure out settable properties for the bean deserializer to use.
   *
   * <p>Note: designed to be overridable, and effort is made to keep interface similar between
   * versions.
   */
  protected void addBeanProps(
      DeserializationContext ctxt, BeanDescription beanDesc, BeanDeserializerBuilder builder)
      throws JsonMappingException {
    final SettableBeanProperty[] creatorProps =
        builder.getValueInstantiator().getFromObjectArguments(ctxt.getConfig());

    // Things specified as "ok to ignore"? [JACKSON-77]
    AnnotationIntrospector intr = ctxt.getAnnotationIntrospector();
    boolean ignoreAny = false;
    {
      Boolean B = intr.findIgnoreUnknownProperties(beanDesc.getClassInfo());
      if (B != null) {
        ignoreAny = B.booleanValue();
        builder.setIgnoreUnknownProperties(ignoreAny);
      }
    }
    // Or explicit/implicit definitions?
    Set<String> ignored =
        ArrayBuilders.arrayToSet(intr.findPropertiesToIgnore(beanDesc.getClassInfo()));
    for (String propName : ignored) {
      builder.addIgnorable(propName);
    }
    // Also, do we have a fallback "any" setter?
    AnnotatedMethod anySetter = beanDesc.findAnySetter();
    if (anySetter != null) {
      builder.setAnySetter(constructAnySetter(ctxt, beanDesc, anySetter));
    }
    // NOTE: we do NOT add @JsonIgnore'd properties into blocked ones if there's any setter
    // Implicit ones via @JsonIgnore and equivalent?
    if (anySetter == null) {
      Collection<String> ignored2 = beanDesc.getIgnoredPropertyNames();
      if (ignored2 != null) {
        for (String propName : ignored2) {
          // allow ignoral of similarly named JSON property, but do not force;
          // latter means NOT adding this to 'ignored':
          builder.addIgnorable(propName);
        }
      }
    }
    final boolean useGettersAsSetters =
        (ctxt.isEnabled(MapperFeature.USE_GETTERS_AS_SETTERS)
            && ctxt.isEnabled(MapperFeature.AUTO_DETECT_GETTERS));

    // Ok: let's then filter out property definitions
    List<BeanPropertyDefinition> propDefs =
        filterBeanProps(ctxt, beanDesc, builder, beanDesc.findProperties(), ignored);

    // After which we can let custom code change the set
    if (_factoryConfig.hasDeserializerModifiers()) {
      for (BeanDeserializerModifier mod : _factoryConfig.deserializerModifiers()) {
        propDefs = mod.updateProperties(ctxt.getConfig(), beanDesc, propDefs);
      }
    }

    // At which point we still have all kinds of properties; not all with mutators:
    for (BeanPropertyDefinition propDef : propDefs) {
      SettableBeanProperty prop = null;
      if (propDef.hasConstructorParameter()) {
        /* [JACKSON-700] If property is passed via constructor parameter, we must
         *   handle things in special way. Not sure what is the most optimal way...
         *   for now, let's just call a (new) method in builder, which does nothing.
         */
        // but let's call a method just to allow custom builders to be aware...
        final String name = propDef.getName();
        for (SettableBeanProperty cp : creatorProps) {
          if (name.equals(cp.getName())) {
            prop = cp;
            break;
          }
        }
        if (prop == null) {
          throw ctxt.mappingException("Could not find creator property with name '" + name + "'");
        }
        builder.addCreatorProperty(prop);
        continue;
      }
      if (propDef.hasSetter()) {
        Type propertyType = propDef.getSetter().getGenericParameterType(0);
        prop = constructSettableProperty(ctxt, beanDesc, propDef, propertyType);
      } else if (propDef.hasField()) {
        Type propertyType = propDef.getField().getGenericType();
        prop = constructSettableProperty(ctxt, beanDesc, propDef, propertyType);
      } else if (useGettersAsSetters && propDef.hasGetter()) {
        /* As per [JACKSON-88], may also need to consider getters
         * for Map/Collection properties; but with lowest precedence
         */
        AnnotatedMethod getter = propDef.getGetter();
        // should only consider Collections and Maps, for now?
        Class<?> rawPropertyType = getter.getRawType();
        if (Collection.class.isAssignableFrom(rawPropertyType)
            || Map.class.isAssignableFrom(rawPropertyType)) {
          prop = constructSetterlessProperty(ctxt, beanDesc, propDef);
        }
      }
      if (prop != null) {
        Class<?>[] views = propDef.findViews();
        if (views == null) {
          // one more twist: if default inclusion disabled, need to force empty set of views
          if (!ctxt.isEnabled(MapperFeature.DEFAULT_VIEW_INCLUSION)) {
            views = NO_VIEWS;
          }
        }
        // one more thing before adding to builder: copy any metadata
        prop.setViews(views);
        builder.addProperty(prop);
      }
    }
  }
コード例 #8
0
  @SuppressWarnings("unchecked")
  public JsonDeserializer<Object> buildThrowableDeserializer(
      DeserializationContext ctxt, JavaType type, BeanDescription beanDesc)
      throws JsonMappingException {
    final DeserializationConfig config = ctxt.getConfig();
    // first: construct like a regular bean deserializer...
    BeanDeserializerBuilder builder = constructBeanDeserializerBuilder(ctxt, beanDesc);
    builder.setValueInstantiator(findValueInstantiator(ctxt, beanDesc));

    addBeanProps(ctxt, beanDesc, builder);
    // (and assume there won't be any back references)

    // But then let's decorate things a bit
    /* To resolve [JACKSON-95], need to add "initCause" as setter
     * for exceptions (sub-classes of Throwable).
     */
    AnnotatedMethod am = beanDesc.findMethod("initCause", INIT_CAUSE_PARAMS);
    if (am != null) { // should never be null
      SimpleBeanPropertyDefinition propDef = new SimpleBeanPropertyDefinition(am, "cause");
      SettableBeanProperty prop =
          constructSettableProperty(ctxt, beanDesc, propDef, am.getGenericParameterType(0));
      if (prop != null) {
        /* 21-Aug-2011, tatus: We may actually have found 'cause' property
         *   to set (with new 1.9 code)... but let's replace it just in case,
         *   otherwise can end up with odd errors.
         */
        builder.addOrReplaceProperty(prop, true);
      }
    }

    // And also need to ignore "localizedMessage"
    builder.addIgnorable("localizedMessage");
    // [JACKSON-794]: JDK 7 also added "getSuppressed", skip if we have such data:
    builder.addIgnorable("suppressed");
    /* As well as "message": it will be passed via constructor,
     * as there's no 'setMessage()' method
     */
    builder.addIgnorable("message");

    // [JACKSON-440]: update builder now that all information is in?
    if (_factoryConfig.hasDeserializerModifiers()) {
      for (BeanDeserializerModifier mod : _factoryConfig.deserializerModifiers()) {
        builder = mod.updateBuilder(config, beanDesc, builder);
      }
    }
    JsonDeserializer<?> deserializer = builder.build();

    /* At this point it ought to be a BeanDeserializer; if not, must assume
     * it's some other thing that can handle deserialization ok...
     */
    if (deserializer instanceof BeanDeserializer) {
      deserializer = new ThrowableDeserializer((BeanDeserializer) deserializer);
    }

    // [JACKSON-440]: may have modifier(s) that wants to modify or replace serializer we just built:
    if (_factoryConfig.hasDeserializerModifiers()) {
      for (BeanDeserializerModifier mod : _factoryConfig.deserializerModifiers()) {
        deserializer = mod.modifyDeserializer(config, beanDesc, deserializer);
      }
    }
    return (JsonDeserializer<Object>) deserializer;
  }