package org.codehaus.jackson.map.ser;
import java.lang.reflect.Method;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.net.InetAddress;
import java.util.*;
import org.codehaus.jackson.map.*;
import org.codehaus.jackson.map.annotate.JsonSerialize;
import org.codehaus.jackson.map.ext.OptionalHandlerFactory;
import org.codehaus.jackson.map.introspect.*;
import org.codehaus.jackson.map.jsontype.NamedType;
import org.codehaus.jackson.map.jsontype.TypeResolverBuilder;
import org.codehaus.jackson.map.ser.std.StdArraySerializers;
import org.codehaus.jackson.map.ser.std.CalendarSerializer;
import org.codehaus.jackson.map.ser.std.StdJdkSerializers;
import org.codehaus.jackson.map.ser.std.StdContainerSerializers;
import org.codehaus.jackson.map.ser.std.DateSerializer;
import org.codehaus.jackson.map.ser.std.EnumMapSerializer;
import org.codehaus.jackson.map.ser.std.EnumSerializer;
import org.codehaus.jackson.map.ser.std.IndexedStringListSerializer;
import org.codehaus.jackson.map.ser.std.InetAddressSerializer;
import org.codehaus.jackson.map.ser.std.JsonValueSerializer;
import org.codehaus.jackson.map.ser.std.MapSerializer;
import org.codehaus.jackson.map.ser.std.NullSerializer;
import org.codehaus.jackson.map.ser.std.ObjectArraySerializer;
import org.codehaus.jackson.map.ser.std.SerializableSerializer;
import org.codehaus.jackson.map.ser.std.SerializableWithTypeSerializer;
import org.codehaus.jackson.map.ser.std.StringCollectionSerializer;
import org.codehaus.jackson.map.ser.std.StringSerializer;
import org.codehaus.jackson.map.ser.std.TimeZoneSerializer;
import org.codehaus.jackson.map.ser.std.ToStringSerializer;
import org.codehaus.jackson.map.ser.std.TokenBufferSerializer;
import org.codehaus.jackson.map.type.*;
import org.codehaus.jackson.map.util.ClassUtil;
import org.codehaus.jackson.map.util.EnumValues;
import org.codehaus.jackson.type.JavaType;
import org.codehaus.jackson.util.TokenBuffer;
/**
* Factory class that can provide serializers for standard JDK classes,
* as well as custom classes that extend standard classes or implement
* one of "well-known" interfaces (such as {@link java.util.Collection}).
*<p>
* Since all the serializers are eagerly instantiated, and there is
* no additional introspection or customizability of these types,
* this factory is essentially stateless.
*/
public abstract class BasicSerializerFactory
extends SerializerFactory
{
/*
/**********************************************************
/* Configuration, lookup tables/maps
/**********************************************************
*/
/**
* Since these are all JDK classes, we shouldn't have to worry
* about ClassLoader used to load them. Rather, we can just
* use the class name, and keep things simple and efficient.
*/
protected final static HashMap<String, JsonSerializer<?>> _concrete =
new HashMap<String, JsonSerializer<?>>();
/**
* Actually it may not make much sense to eagerly instantiate all
* kinds of serializers: so this Map actually contains class references,
* not instances
*
* @since 1.6
*/
protected final static HashMap<String, Class<? extends JsonSerializer<?>>> _concreteLazy =
new HashMap<String, Class<? extends JsonSerializer<?>>>();
static {
/* String and string-like types (note: date types explicitly
* not included -- can use either textual or numeric serialization)
*/
_concrete.put(String.class.getName(), new StringSerializer());
final ToStringSerializer sls = ToStringSerializer.instance;
_concrete.put(StringBuffer.class.getName(), sls);
_concrete.put(StringBuilder.class.getName(), sls);
_concrete.put(Character.class.getName(), sls);
_concrete.put(Character.TYPE.getName(), sls);
// Primitives/wrappers for primitives (primitives needed for Beans)
_concrete.put(Boolean.TYPE.getName(), new StdSerializers.BooleanSerializer(true));
_concrete.put(Boolean.class.getName(), new StdSerializers.BooleanSerializer(false));
final JsonSerializer<?> intS = new StdSerializers.IntegerSerializer();
_concrete.put(Integer.class.getName(), intS);
_concrete.put(Integer.TYPE.getName(), intS);
_concrete.put(Long.class.getName(), StdSerializers.LongSerializer.instance);
_concrete.put(Long.TYPE.getName(), StdSerializers.LongSerializer.instance);
_concrete.put(Byte.class.getName(), StdSerializers.IntLikeSerializer.instance);
_concrete.put(Byte.TYPE.getName(), StdSerializers.IntLikeSerializer.instance);
_concrete.put(Short.class.getName(), StdSerializers.IntLikeSerializer.instance);
_concrete.put(Short.TYPE.getName(), StdSerializers.IntLikeSerializer.instance);
// Numbers, limited length floating point
_concrete.put(Float.class.getName(), StdSerializers.FloatSerializer.instance);
_concrete.put(Float.TYPE.getName(), StdSerializers.FloatSerializer.instance);
_concrete.put(Double.class.getName(), StdSerializers.DoubleSerializer.instance);
_concrete.put(Double.TYPE.getName(), StdSerializers.DoubleSerializer.instance);
// Other numbers, more complicated
final JsonSerializer<?> ns = new StdSerializers.NumberSerializer();
_concrete.put(BigInteger.class.getName(), ns);
_concrete.put(BigDecimal.class.getName(), ns);
// Other discrete non-container types:
// First, Date/Time zoo:
_concrete.put(Calendar.class.getName(), CalendarSerializer.instance);
DateSerializer dateSer = DateSerializer.instance;
_concrete.put(java.util.Date.class.getName(), dateSer);
// note: timestamps are very similar to java.util.Date, thus serialized as such
_concrete.put(java.sql.Timestamp.class.getName(), dateSer);
_concrete.put(java.sql.Date.class.getName(), new StdSerializers.SqlDateSerializer());
_concrete.put(java.sql.Time.class.getName(), new StdSerializers.SqlTimeSerializer());
// And then other standard non-structured JDK types
for (Map.Entry<Class<?>,Object> en : new StdJdkSerializers().provide()) {
Object value = en.getValue();
if (value instanceof JsonSerializer<?>) {
_concrete.put(en.getKey().getName(), (JsonSerializer<?>) value);
} else if (value instanceof Class<?>) {
@SuppressWarnings("unchecked")
Class<? extends JsonSerializer<?>> cls = (Class<? extends JsonSerializer<?>>) value;
_concreteLazy.put(en.getKey().getName(), cls);
} else { // should never happen, but:
throw new IllegalStateException("Internal error: unrecognized value of type "+en.getClass().getName());
}
}
// Jackson-specific type(s)
// (Q: can this ever be sub-classed?)
_concreteLazy.put(TokenBuffer.class.getName(), TokenBufferSerializer.class);
}
protected final static HashMap<String, JsonSerializer<?>> _arraySerializers =
new HashMap<String, JsonSerializer<?>>();
static {
// Arrays of various types (including common object types)
_arraySerializers.put(boolean[].class.getName(), new StdArraySerializers.BooleanArraySerializer());
_arraySerializers.put(byte[].class.getName(), new StdArraySerializers.ByteArraySerializer());
_arraySerializers.put(char[].class.getName(), new StdArraySerializers.CharArraySerializer());
_arraySerializers.put(short[].class.getName(), new StdArraySerializers.ShortArraySerializer());
_arraySerializers.put(int[].class.getName(), new StdArraySerializers.IntArraySerializer());
_arraySerializers.put(long[].class.getName(), new StdArraySerializers.LongArraySerializer());
_arraySerializers.put(float[].class.getName(), new StdArraySerializers.FloatArraySerializer());
_arraySerializers.put(double[].class.getName(), new StdArraySerializers.DoubleArraySerializer());
}
/**
* Helper object used to deal with serializers for optional JDK types (like ones
* omitted from GAE, Android)
*/
protected OptionalHandlerFactory optionalHandlers = OptionalHandlerFactory.instance;
/*
/**********************************************************
/* Life cycle
/**********************************************************
*/
/**
* We will provide default constructor to allow sub-classing,
* but make it protected so that no non-singleton instances of
* the class will be instantiated.
*/
protected BasicSerializerFactory() { }
/*
/**********************************************************
/* SerializerFactory impl
/**********************************************************
*/
// Implemented by sub-classes
@Override
public abstract JsonSerializer<Object> createSerializer(SerializationConfig config, JavaType type,
BeanProperty property)
throws JsonMappingException;
/**
* Method called to construct a type serializer for values with given declared
* base type. This is called for values other than those of bean property
* types.
*/
@Override
public TypeSerializer createTypeSerializer(SerializationConfig config, JavaType baseType,
BeanProperty property)
{
BasicBeanDescription bean = config.introspectClassAnnotations(baseType.getRawClass());
AnnotatedClass ac = bean.getClassInfo();
AnnotationIntrospector ai = config.getAnnotationIntrospector();
TypeResolverBuilder<?> b = ai.findTypeResolver(config, ac, baseType);
/* Ok: if there is no explicit type info handler, we may want to
* use a default. If so, config object knows what to use.
*/
Collection<NamedType> subtypes = null;
if (b == null) {
b = config.getDefaultTyper(baseType);
} else {
subtypes = config.getSubtypeResolver().collectAndResolveSubtypes(ac, config, ai);
}
return (b == null) ? null : b.buildTypeSerializer(config, baseType, subtypes, property);
}
/*
/**********************************************************
/* Additional API for other core classes
/**********************************************************
*/
public final JsonSerializer<?> getNullSerializer() {
return NullSerializer.instance;
}
protected abstract Iterable<Serializers> customSerializers();
/*
/**********************************************************
/* Overridable secondary serializer accessor methods
/**********************************************************
*/
/**
* Method that will use fast lookup (and identity comparison) methods to
* see if we know serializer to use for given type.
*/
public final JsonSerializer<?> findSerializerByLookup(JavaType type, SerializationConfig config,
BasicBeanDescription beanDesc, BeanProperty property,
boolean staticTyping)
{
Class<?> raw = type.getRawClass();
String clsName = raw.getName();
JsonSerializer<?> ser = _concrete.get(clsName);
if (ser != null) {
return ser;
}
Class<? extends JsonSerializer<?>> serClass = _concreteLazy.get(clsName);
if (serClass != null) {
try {
return serClass.newInstance();
} catch (Exception e) {
throw new IllegalStateException("Failed to instantiate standard serializer (of type "+serClass.getName()+"): "
+e.getMessage(), e);
}
}
return null;
}
/**
* Method for checking if we can determine serializer to use based on set of
* known primary types, checking for set of known base types (exact matches
* having been compared against with <code>findSerializerByLookup</code>).
* This does not include "secondary" interfaces, but
* mostly concrete or abstract base classes.
*/
@SuppressWarnings("deprecation")
public final JsonSerializer<?> findSerializerByPrimaryType(JavaType type, SerializationConfig config,
BasicBeanDescription beanDesc, BeanProperty property,
boolean staticTyping)
throws JsonMappingException
{
Class<?> raw = type.getRawClass();
// First: JsonSerializable and related
if (JsonSerializable.class.isAssignableFrom(raw)) {
if (JsonSerializableWithType.class.isAssignableFrom(raw)) {
return SerializableWithTypeSerializer.instance;
}
return SerializableSerializer.instance;
}
// Second: as per [JACKSON-193] consider @JsonValue for any types:
AnnotatedMethod valueMethod = beanDesc.findJsonValueMethod();
if (valueMethod != null) {
// [JACKSON-586]: need to ensure accessibility of method
Method m = valueMethod.getAnnotated();
if (config.isEnabled(SerializationConfig.Feature.CAN_OVERRIDE_ACCESS_MODIFIERS)) {
ClassUtil.checkAndFixAccess(m);
}
JsonSerializer<Object> ser = findSerializerFromAnnotation(config, valueMethod, property);
return new JsonValueSerializer(m, ser, property);
}
// One unfortunate special case, as per [JACKSON-484]
if (InetAddress.class.isAssignableFrom(raw)) {
return InetAddressSerializer.instance;
}
// ... and another one, [JACKSON-522], for TimeZone
if (TimeZone.class.isAssignableFrom(raw)) {
return TimeZoneSerializer.instance;
}
// and yet one more [JACKSON-789]
if (java.nio.charset.Charset.class.isAssignableFrom(raw)) {
return ToStringSerializer.instance;
}
// Then check for optional/external serializers [JACKSON-386]
JsonSerializer<?> ser = optionalHandlers.findSerializer(config, type);
if (ser != null) {
return ser;
}
if (Number.class.isAssignableFrom(raw)) {
return StdSerializers.NumberSerializer.instance;
}
if (Enum.class.isAssignableFrom(raw)) {
@SuppressWarnings("unchecked")
Class<Enum<?>> enumClass = (Class<Enum<?>>) raw;
return EnumSerializer.construct(enumClass, config, beanDesc);
}
if (Calendar.class.isAssignableFrom(raw)) {
return CalendarSerializer.instance;
}
if (java.util.Date.class.isAssignableFrom(raw)) {
return DateSerializer.instance;
}
return null;
}
/**
* Reflection-based serialized find method, which checks if
* given class implements one of recognized "add-on" interfaces.
* Add-on here means a role that is usually or can be a secondary
* trait: for example,
* bean classes may implement {@link Iterable}, but their main
* function is usually something else. The reason for
*/
public final JsonSerializer<?> findSerializerByAddonType(SerializationConfig config, JavaType javaType,
BasicBeanDescription beanDesc, BeanProperty property,
boolean staticTyping)
throws JsonMappingException
{
Class<?> type = javaType.getRawClass();
// These need to be in decreasing order of specificity...
if (Iterator.class.isAssignableFrom(type)) {
return buildIteratorSerializer(config, javaType, beanDesc, property, staticTyping);
}
if (Iterable.class.isAssignableFrom(type)) {
return buildIterableSerializer(config, javaType, beanDesc, property, staticTyping);
}
if (CharSequence.class.isAssignableFrom(type)) {
return ToStringSerializer.instance;
}
return null;
}
/**
* Helper method called to check if a class or method
* has an annotation
* (@link org.codehaus.jackson.map.ser.JsonSerialize#using)
* that tells the class to use for serialization.
* Returns null if no such annotation found.
*/
@SuppressWarnings("unchecked")
protected JsonSerializer<Object> findSerializerFromAnnotation(SerializationConfig config, Annotated a,
BeanProperty property)
throws JsonMappingException
{
Object serDef = config.getAnnotationIntrospector().findSerializer(a);
if (serDef == null) {
return null;
}
if (serDef instanceof JsonSerializer) {
JsonSerializer<Object> ser = (JsonSerializer<Object>) serDef;
if (ser instanceof ContextualSerializer<?>) {
return ((ContextualSerializer<Object>) ser).createContextual(config, property);
}
return ser;
}
/* Alas, there's no way to force return type of "either class
* X or Y" -- need to throw an exception after the fact
*/
if (!(serDef instanceof Class)) {
throw new IllegalStateException("AnnotationIntrospector returned value of type "+serDef.getClass().getName()+"; expected type JsonSerializer or Class<JsonSerializer> instead");
}
Class<?> cls = (Class<?>) serDef;
if (!JsonSerializer.class.isAssignableFrom(cls)) {
throw new IllegalStateException("AnnotationIntrospector returned Class "+cls.getName()+"; expected Class<JsonSerializer>");
}
JsonSerializer<Object> ser = config.serializerInstance(a, (Class<? extends JsonSerializer<?>>) cls);
if (ser instanceof ContextualSerializer<?>) {
return ((ContextualSerializer<Object>) ser).createContextual(config, property);
}
return ser;
}
/*
/**********************************************************
/* Factory methods, container types:
/**********************************************************
*/
public JsonSerializer<?> buildContainerSerializer(SerializationConfig config, JavaType type,
BasicBeanDescription beanDesc, BeanProperty property, boolean staticTyping)
{
// Let's see what we can learn about element/content/value type, type serializer for it:
JavaType elementType = type.getContentType();
TypeSerializer elementTypeSerializer = createTypeSerializer(config, elementType, property);
// if elements have type serializer, can not force static typing:
if (elementTypeSerializer != null) {
staticTyping = false;
} else if (!staticTyping) {
staticTyping = usesStaticTyping(config, beanDesc, elementTypeSerializer, property);
}
JsonSerializer<Object> elementValueSerializer = findContentSerializer(config,
beanDesc.getClassInfo(), property);
if (type.isMapLikeType()) { // implements java.util.Map
MapLikeType mlt = (MapLikeType) type;
JsonSerializer<Object> keySerializer = findKeySerializer(config, beanDesc.getClassInfo(), property);
if (mlt.isTrueMapType()) {
return buildMapSerializer(config, (MapType) mlt, beanDesc, property, staticTyping,
keySerializer, elementTypeSerializer, elementValueSerializer);
}
return buildMapLikeSerializer(config, mlt, beanDesc, property, staticTyping,
keySerializer, elementTypeSerializer, elementValueSerializer);
}
if (type.isCollectionLikeType()) {
CollectionLikeType clt = (CollectionLikeType) type;
if (clt.isTrueCollectionType()) {
return buildCollectionSerializer(config, (CollectionType) clt, beanDesc, property, staticTyping,
elementTypeSerializer, elementValueSerializer);
}
return buildCollectionLikeSerializer(config, clt, beanDesc, property, staticTyping,
elementTypeSerializer, elementValueSerializer);
}
if (type.isArrayType()) {
return buildArraySerializer(config, (ArrayType) type, beanDesc, property, staticTyping,
elementTypeSerializer, elementValueSerializer);
}
return null;
}
/**
* Helper method that handles configuration details when constructing serializers for
* Collection and Collection-like types.
*
* @since 1.8
*/
protected JsonSerializer<?> buildCollectionLikeSerializer(SerializationConfig config,
CollectionLikeType type,
BasicBeanDescription beanDesc, BeanProperty property,
boolean staticTyping,
TypeSerializer elementTypeSerializer, JsonSerializer<Object> elementValueSerializer)
{
for (Serializers serializers : customSerializers()) {
JsonSerializer<?> ser = serializers.findCollectionLikeSerializer(config, type, beanDesc, property,
elementTypeSerializer, elementValueSerializer);
if (ser != null) {
return ser;
}
}
return null;
}
/**
* Helper method that handles configuration details when constructing serializers for
* {@link java.util.List} types that support efficient by-index access
*<p>
* Note: signature changed in 1.8, to take 'staticTyping' argument
*/
protected JsonSerializer<?> buildCollectionSerializer(SerializationConfig config,
CollectionType type,
BasicBeanDescription beanDesc, BeanProperty property,
boolean staticTyping,
TypeSerializer elementTypeSerializer, JsonSerializer<Object> elementValueSerializer)
{
// Module-provided custom collection serializers?
for (Serializers serializers : customSerializers()) {
JsonSerializer<?> ser = serializers.findCollectionSerializer(config, type, beanDesc, property,
elementTypeSerializer, elementValueSerializer);
if (ser != null) {
return ser;
}
}
Class<?> raw = type.getRawClass();
if (EnumSet.class.isAssignableFrom(raw)) {
return buildEnumSetSerializer(config, type, beanDesc, property, staticTyping,
elementTypeSerializer, elementValueSerializer);
}
Class<?> elementRaw = type.getContentType().getRawClass();
if (isIndexedList(raw)) {
if (elementRaw == String.class) {
return new IndexedStringListSerializer(property, elementValueSerializer);
}
return StdContainerSerializers.indexedListSerializer(type.getContentType(), staticTyping,
elementTypeSerializer, property, elementValueSerializer);
}
if (elementRaw == String.class) {
return new StringCollectionSerializer(property, elementValueSerializer);
}
return StdContainerSerializers.collectionSerializer(type.getContentType(), staticTyping,
elementTypeSerializer, property, elementValueSerializer);
}
protected JsonSerializer<?> buildEnumSetSerializer(SerializationConfig config, JavaType type,
BasicBeanDescription beanDesc, BeanProperty property,
boolean staticTyping,
TypeSerializer elementTypeSerializer, JsonSerializer<Object> elementValueSerializer)
{
// this may or may not be available (Class doesn't; type of field/method does)
JavaType enumType = type.getContentType();
// and even if nominally there is something, only use if it really is enum
if (!enumType.isEnumType()) {
enumType = null;
}
return StdContainerSerializers.enumSetSerializer(enumType, property);
}
/**
* @since 1.8
*/
protected boolean isIndexedList(Class<?> cls)
{
return RandomAccess.class.isAssignableFrom(cls);
}
/*
/**********************************************************
/* Factory methods, for Maps
/**********************************************************
*/
/**
* Helper method that handles configuration details when constructing serializers for
* all "Map-like" types; both ones that implement {@link java.util.Map} and
* ones that do not (but that have been indicated to behave like Maps).
*
* @since 1.8
*/
protected JsonSerializer<?> buildMapLikeSerializer(SerializationConfig config, MapLikeType type,
BasicBeanDescription beanDesc, BeanProperty property,
boolean staticTyping,
JsonSerializer<Object> keySerializer,
TypeSerializer elementTypeSerializer, JsonSerializer<Object> elementValueSerializer)
{
for (Serializers serializers : customSerializers()) {
JsonSerializer<?> ser = serializers.findMapLikeSerializer(config, type, beanDesc, property,
keySerializer, elementTypeSerializer, elementValueSerializer);
if (ser != null) {
return ser;
}
}
return null;
}
/**
* Helper method that handles configuration details when constructing serializers for
* {@link java.util.Map} types.
*<p>
* Note: signature changed in 1.8, to take 'staticTyping' argument
*/
protected JsonSerializer<?> buildMapSerializer(SerializationConfig config, MapType type,
BasicBeanDescription beanDesc, BeanProperty property,
boolean staticTyping,
JsonSerializer<Object> keySerializer,
TypeSerializer elementTypeSerializer, JsonSerializer<Object> elementValueSerializer)
{
for (Serializers serializers : customSerializers()) {
JsonSerializer<?> ser = serializers.findMapSerializer(config, type, beanDesc, property,
keySerializer, elementTypeSerializer, elementValueSerializer);
if (ser != null) {
return ser;
}
}
if (EnumMap.class.isAssignableFrom(type.getRawClass())) {
return buildEnumMapSerializer(config, type, beanDesc, property, staticTyping,
elementTypeSerializer, elementValueSerializer);
}
return MapSerializer.construct(config.getAnnotationIntrospector().findPropertiesToIgnore(beanDesc.getClassInfo()),
type, staticTyping, elementTypeSerializer, property,
keySerializer, elementValueSerializer);
}
/**
* Helper method that handles configuration details when constructing serializers for
* {@link java.util.EnumMap} types.
*<p>
* Note: signature changed in 1.8, to take 'staticTyping' argument
*/
protected JsonSerializer<?> buildEnumMapSerializer(SerializationConfig config, JavaType type,
BasicBeanDescription beanDesc, BeanProperty property,
boolean staticTyping,
TypeSerializer elementTypeSerializer, JsonSerializer<Object> elementValueSerializer)
{
JavaType keyType = type.getKeyType();
// Need to find key enum values...
EnumValues enums = null;
if (keyType.isEnumType()) { // non-enum if we got it as type erased class (from instance)
@SuppressWarnings("unchecked")
Class<Enum<?>> enumClass = (Class<Enum<?>>) keyType.getRawClass();
enums = EnumValues.construct(enumClass, config.getAnnotationIntrospector());
}
return new EnumMapSerializer(type.getContentType(), staticTyping, enums,
elementTypeSerializer, property, elementValueSerializer);
}
/*
/**********************************************************
/* Factory methods, for Arrays
/**********************************************************
*/
/**
* Helper method that handles configuration details when constructing serializers for
* <code>Object[]</code> (and subtypes, except for String).
*/
protected JsonSerializer<?> buildArraySerializer(SerializationConfig config, ArrayType type,
BasicBeanDescription beanDesc, BeanProperty property,
boolean staticTyping,
TypeSerializer elementTypeSerializer, JsonSerializer<Object> elementValueSerializer)
{
Class<?> raw = type.getRawClass();
if (String[].class == raw) {
return new StdArraySerializers.StringArraySerializer(property);
}
// other standard types?
JsonSerializer<?> ser = _arraySerializers.get(raw.getName());
if (ser != null) {
return ser;
}
return new ObjectArraySerializer(type.getContentType(), staticTyping, elementTypeSerializer,
property, elementValueSerializer);
}
/*
/**********************************************************
/* Factory methods, for non-container types
/**********************************************************
*/
protected JsonSerializer<?> buildIteratorSerializer(SerializationConfig config, JavaType type,
BasicBeanDescription beanDesc, BeanProperty property,
boolean staticTyping)
{
// if there's generic type, it'll be the first contained type
JavaType valueType = type.containedType(0);
if (valueType == null) {
valueType = TypeFactory.unknownType();
}
TypeSerializer vts = createTypeSerializer(config, valueType, property);
return StdContainerSerializers.iteratorSerializer(valueType,
usesStaticTyping(config, beanDesc, vts, property), vts, property);
}
protected JsonSerializer<?> buildIterableSerializer(SerializationConfig config, JavaType type,
BasicBeanDescription beanDesc, BeanProperty property,
boolean staticTyping)
{
// if there's generic type, it'll be the first contained type
JavaType valueType = type.containedType(0);
if (valueType == null) {
valueType = TypeFactory.unknownType();
}
TypeSerializer vts = createTypeSerializer(config, valueType, property);
return StdContainerSerializers.iterableSerializer(valueType,
usesStaticTyping(config, beanDesc, vts, property), vts, property);
}
/*
/**********************************************************
/* Other helper methods
/**********************************************************
*/
/**
* Helper method used to encapsulate details of annotation-based type
* coercion
*
* @since 1.8
*/
@SuppressWarnings("unchecked")
protected <T extends JavaType> T modifyTypeByAnnotation(SerializationConfig config, Annotated a, T type)
{
// first: let's check class for the instance itself:
Class<?> superclass = config.getAnnotationIntrospector().findSerializationType(a);
if (superclass != null) {
try {
type = (T) type.widenBy(superclass);
} catch (IllegalArgumentException iae) {
throw new IllegalArgumentException("Failed to widen type "+type+" with concrete-type annotation (value "+superclass.getName()+"), method '"+a.getName()+"': "+iae.getMessage());
}
}
return modifySecondaryTypesByAnnotation(config, a, type);
}
/**
* @since 1.8
*/
@SuppressWarnings("unchecked")
protected static <T extends JavaType> T modifySecondaryTypesByAnnotation(SerializationConfig config, Annotated a, T type)
{
AnnotationIntrospector intr = config.getAnnotationIntrospector();
// then key class
if (type.isContainerType()) {
Class<?> keyClass = intr.findSerializationKeyType(a, type.getKeyType());
if (keyClass != null) {
// illegal to use on non-Maps
if (!(type instanceof MapType)) {
throw new IllegalArgumentException("Illegal key-type annotation: type "+type+" is not a Map type");
}
try {
type = (T) ((MapType) type).widenKey(keyClass);
} catch (IllegalArgumentException iae) {
throw new IllegalArgumentException("Failed to narrow key type "+type+" with key-type annotation ("+keyClass.getName()+"): "+iae.getMessage());
}
}
// and finally content class; only applicable to structured types
Class<?> cc = intr.findSerializationContentType(a, type.getContentType());
if (cc != null) {
try {
type = (T) type.widenContentsBy(cc);
} catch (IllegalArgumentException iae) {
throw new IllegalArgumentException("Failed to narrow content type "+type+" with content-type annotation ("+cc.getName()+"): "+iae.getMessage());
}
}
}
return type;
}
protected static JsonSerializer<Object> findKeySerializer(SerializationConfig config,
Annotated a, BeanProperty property)
{
AnnotationIntrospector intr = config.getAnnotationIntrospector();
Class<? extends JsonSerializer<?>> serClass = intr.findKeySerializer(a);
if (serClass == null || serClass == JsonSerializer.None.class) {
if (property != null) {
serClass = intr.findKeySerializer(property.getMember());
}
}
if (serClass != null && serClass != JsonSerializer.None.class) {
return config.serializerInstance(a, serClass);
}
return null;
}
protected static JsonSerializer<Object> findContentSerializer(SerializationConfig config,
Annotated a, BeanProperty property)
{
AnnotationIntrospector intr = config.getAnnotationIntrospector();
Class<? extends JsonSerializer<?>> serClass = intr.findContentSerializer(a);
if (serClass == null || serClass == JsonSerializer.None.class) {
if (property != null) {
serClass = intr.findContentSerializer(property.getMember());
}
}
if (serClass != null && serClass != JsonSerializer.None.class) {
return config.serializerInstance(a, serClass);
}
return null;
}
/**
* Helper method to check whether global settings and/or class
* annotations for the bean class indicate that static typing
* (declared types) should be used for properties.
* (instead of dynamic runtime types).
*/
protected boolean usesStaticTyping(SerializationConfig config, BasicBeanDescription beanDesc,
TypeSerializer typeSer, BeanProperty property)
{
/* 16-Aug-2010, tatu: If there is a (value) type serializer, we can not force
* static typing; that would make it impossible to handle expected subtypes
*/
if (typeSer != null) {
return false;
}
AnnotationIntrospector intr = config.getAnnotationIntrospector();
JsonSerialize.Typing t = intr.findSerializationTyping(beanDesc.getClassInfo());
if (t != null) {
if (t == JsonSerialize.Typing.STATIC) {
return true;
}
} else {
if (config.isEnabled(SerializationConfig.Feature.USE_STATIC_TYPING)) {
return true;
}
}
/* 11-Mar-2011, tatu: Ok. This is bit hacky, but we really need to be able to find cases
* where key and/or value serializers were specified, to force use of static typing
*/
if (property != null) {
JavaType type = property.getType();
if (type.isContainerType()) {
if (intr.findSerializationContentType(property.getMember(), property.getType()) != null) {
return true;
}
if (type instanceof MapType) {
if (intr.findSerializationKeyType(property.getMember(), property.getType()) != null) {
return true;
}
}
}
}
return false;
}
}