Examples of com.fasterxml.jackson.databind.type.TypeFactory

Package com.fasterxml.jackson.databind.type

Examples of com.fasterxml.jackson.databind.type.TypeFactory

com.fasterxml.jackson.databind.type.TypeFactory
Class used for creating concrete {@link JavaType} instances,given various inputs.
Instances of this class are accessible using {@link com.fasterxml.jackson.databind.ObjectMapper}as well as many objects it constructs (like {@link com.fasterxml.jackson.databind.DeserializationConfig} and{@link com.fasterxml.jackson.databind.SerializationConfig})), but usually those objects also expose convenience methods (constructType). So, you can do for example:
```
 JavaType stringType = mapper.constructType(String.class); 
```
However, more advanced methods are only exposed by factory so that you may need to use:
```
 JavaType stringCollection = mapper.getTypeFactory().constructCollectionType(List.class, String.class); 
```

    List<String> packages = Lists.newArrayList();
    packages.add("org.platformlayer.xaas.web.jaxrs");
    packages.add("org.platformlayer.xaas.web.resources");
    // packages.add("org.codehaus.jackson.jaxrs");


    TypeFactory typeFactory = TypeFactory.defaultInstance();
    ObjectMapper objectMapper = JsonHelper.buildObjectMapper(typeFactory, false);


    // TypeResolverBuilder<?> typer = new PlatformLayerTypeResolverBuilder();
    // TypeIdResolver typeIdResolver = new PlatformLayerTypeIdResolver(null, typeFactory);
    // this.requestInjection(typeIdResolver);

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        Class<?> cls = type.getRawClass();
        // [JACKSON-283]: AtomicReference is a rather special type...
        if (AtomicReference.class.isAssignableFrom(cls)) {
            // Must find parameterization
            TypeFactory tf = ctxt.getTypeFactory();
            JavaType[] params = tf.findTypeParameters(type, AtomicReference.class);
            JavaType referencedType;
            if (params == null || params.length < 1) { // untyped (raw)
                referencedType = TypeFactory.unknownType();
            } else {
                referencedType = params[0];

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    public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint)
        throws JsonMappingException
    {
        JsonArrayFormatVisitor arrayVisitor = (visitor == null) ? null : visitor.expectArrayFormat(typeHint);
        if (arrayVisitor != null) {
            TypeFactory tf = visitor.getProvider().getTypeFactory();
            JavaType contentType = tf.moreSpecificType(_elementType, typeHint.getContentType());
            if (contentType == null) {
                throw new JsonMappingException("Could not resolve type");
            }
            JsonSerializer<?> valueSer = _elementSerializer;
            if (valueSer == null) {

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  public String detectType(Object object) {
    return constructType(object).toCanonical();
  }
  
  protected JavaType constructType(Object object) {
    TypeFactory typeFactory = TypeFactory.defaultInstance();
    
    if (object instanceof List && !((List<?>) object).isEmpty()) {
      List<?> list = (List<?>) object;
      Object firstElement = list.get(0);
      return typeFactory.constructCollectionType(list.getClass(), constructType(firstElement));


    } else {
      return typeFactory.constructType(object.getClass());
    }
  }

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        Class<?> cls = type.getRawClass();
        // [JACKSON-283]: AtomicReference is a rather special type...
        if (AtomicReference.class.isAssignableFrom(cls)) {
            // Must find parameterization
            TypeFactory tf = ctxt.getTypeFactory();
            JavaType[] params = tf.findTypeParameters(type, AtomicReference.class);
            JavaType referencedType;
            if (params == null || params.length < 1) { // untyped (raw)
                referencedType = TypeFactory.unknownType();
            } else {
                referencedType = params[0];

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                mapper._deserializationContext = mapper._deserializationContext.with(df);
            }


//          @Override
            public void addTypeModifier(TypeModifier modifier) {
                TypeFactory f = mapper._typeFactory;
                f = f.withModifier(modifier);
                mapper.setTypeFactory(f);
            }


//          @Override
            public void addValueInstantiators(ValueInstantiators instantiators) {

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          return conversionService.convert(value, TypeDescriptor.forObject(value),
              methodParameter.getTypeDescriptor());
        } catch (ConversionFailedException e) {
          // ignore this exception for collections and arrays.
          // try to convert the value with jackson
          TypeFactory typeFactory = jsonHandler.getMapper().getTypeFactory();
          if (methodParameter.getTypeDescriptor().isCollection()) {
            JavaType type = CollectionType.construct(
                methodParameter.getType(),
                typeFactory.constructType(methodParameter.getTypeDescriptor()
                    .getElementTypeDescriptor().getType()));
            return jsonHandler.convertValue(value, type);
          } else if (methodParameter.getTypeDescriptor().isArray()) {
            JavaType type = typeFactory.constructArrayType(methodParameter.getTypeDescriptor()
                .getElementTypeDescriptor().getType());
            return jsonHandler.convertValue(value, type);
          }


          throw e;

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    @Override
    public void resolve(DeserializationContext ctxt) throws JsonMappingException
    {
        JavaType obType = ctxt.constructType(Object.class);
        JavaType stringType = ctxt.constructType(String.class);
        TypeFactory tf = ctxt.getTypeFactory();
        _mapDeserializer = _findCustomDeser(ctxt, tf.constructMapType(Map.class, stringType, obType));
        _listDeserializer = _findCustomDeser(ctxt, tf.constructCollectionType(List.class, obType));
        _stringDeserializer = _findCustomDeser(ctxt, stringType);
        _numberDeserializer = _findCustomDeser(ctxt, tf.constructType(Number.class));
    }

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    public void acceptJsonFormatVisitor(JsonFormatVisitorWrapper visitor, JavaType typeHint)
        throws JsonMappingException
    {
        JsonArrayFormatVisitor arrayVisitor = visitor.expectArrayFormat(typeHint);
        if (arrayVisitor != null) {
            TypeFactory tf = visitor.getProvider().getTypeFactory();
            JavaType contentType = tf.moreSpecificType(_elementType, typeHint.getContentType());
            if (contentType == null) {
                throw new JsonMappingException("Could not resolve type");
            }
            JsonSerializer<?> valueSer = _elementSerializer;
            if (valueSer == null) {

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    }


    public void testJavaType() throws Exception
    {
        ObjectMapper mapper = new ObjectMapper();
        TypeFactory tf = TypeFactory.defaultInstance();
        // first simple type:
        String json = mapper.writeValueAsString(tf.constructType(String.class));
        assertEquals(quote(java.lang.String.class.getName()), json);
        // and back
        JavaType t = mapper.readValue(json, JavaType.class);
        assertNotNull(t);
        assertEquals(String.class, t.getRawClass());

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