/** @param elementType May be null if the type is unknown. */
public void readField(
Object object, String fieldName, String jsonName, Class elementType, JsonValue jsonMap) {
Type type = ReflectionCache.getType(object.getClass());
ObjectMap<String, FieldMetadata> fields = typeToFields.get(type);
if (fields == null) fields = cacheFields(type);
FieldMetadata metadata = fields.get(fieldName);
if (metadata == null)
throw new SerializationException(
"Field not found: " + fieldName + " (" + type.getName() + ")");
Field field = metadata.field;
JsonValue jsonValue = jsonMap.get(jsonName);
if (jsonValue == null) return;
if (elementType == null) elementType = metadata.elementType;
try {
field.set(object, readValue(field.getType().getClassOfType(), elementType, jsonValue));
} catch (IllegalAccessException ex) {
throw new SerializationException(
"Error accessing field: " + field.getName() + " (" + type.getName() + ")", ex);
} catch (SerializationException ex) {
ex.addTrace(field.getName() + " (" + type.getName() + ")");
throw ex;
} catch (RuntimeException runtimeEx) {
SerializationException ex = new SerializationException(runtimeEx);
ex.addTrace(field.getName() + " (" + type.getName() + ")");
throw ex;
}
}
private ObjectMap<String, FieldMetadata> cacheFields(Type type) {
ArrayList<Field> allFields = new ArrayList();
Type nextClass = type;
while (nextClass != null && nextClass.getClassOfType() != Object.class) {
Collections.addAll(allFields, nextClass.getDeclaredFields());
nextClass = nextClass.getSuperclass();
}
ObjectMap<String, FieldMetadata> nameToField = new ObjectMap();
for (int i = 0, n = allFields.size(); i < n; i++) {
Field field = allFields.get(i);
if (field.isTransient()) continue;
if (field.isStatic()) continue;
if (field.isSynthetic()) continue;
if (!field.isAccessible()) {
try {
field.setAccessible(true);
} catch (AccessControlException ex) {
continue;
}
}
nameToField.put(field.getName(), new FieldMetadata(field));
}
typeToFields.put(type, nameToField);
return nameToField;
}
private Object newInstance(Type type) {
try {
return type.newInstance();
} catch (Exception ex) {
try {
// Try a private constructor.
Constructor constructor = type.getDeclaredConstructor();
constructor.setAccessible(true);
return constructor.newInstance();
} catch (SecurityException ignored) {
} catch (NoSuchMethodException ignored) {
if (type.isArray())
throw new SerializationException(
"Encountered JSON object when expected array of type: " + type.getName(), ex);
else if (type.isMemberClass() && !type.isStatic())
throw new SerializationException(
"Class cannot be created (non-static member class): " + type.getName(), ex);
else
throw new SerializationException(
"Class cannot be created (missing no-arg constructor): " + type.getName(), ex);
} catch (Exception privateConstructorException) {
ex = privateConstructorException;
}
throw new SerializationException(
"Error constructing instance of class: " + type.getName(), ex);
}
}
/**
* s * @return an array containing all public methods of this class and its super classes. See
* {@link Class#getMethods()}.
*/
public Method[] getMethods() {
if (allMethods == null) {
ArrayList<Method> allMethodsList = new ArrayList<Method>();
Type t = this;
while (t != null) {
for (Method m : t.methods) {
if (m.isPublic()) allMethodsList.add(m);
}
t = t.getSuperclass();
}
allMethods = allMethodsList.toArray(new Method[allMethodsList.size()]);
}
return allMethods;
}
/**
* @return an array containing all the public fields of this class and its super classes. See
* {@link Class#getFields()}.
*/
public Field[] getFields() {
if (allFields == null) {
ArrayList<Field> allFieldsList = new ArrayList<Field>();
Type t = this;
while (t != null) {
for (Field f : t.fields) {
if (f.isPublic) allFieldsList.add(f);
}
t = t.getSuperclass();
}
allFields = allFieldsList.toArray(new Field[allFieldsList.size()]);
}
return allFields;
}
public void readFields(Object object, JsonValue jsonMap) {
Type type = ReflectionCache.getType(object.getClass());
ObjectMap<String, FieldMetadata> fields = typeToFields.get(type);
if (fields == null) fields = cacheFields(type);
for (JsonValue child = jsonMap.child(); child != null; child = child.next()) {
FieldMetadata metadata = fields.get(child.name());
if (metadata == null) {
if (ignoreUnknownFields) {
if (debug)
System.out.println(
"Ignoring unknown field: " + child.name() + " (" + type.getName() + ")");
continue;
} else
throw new SerializationException(
"Field not found: " + child.name() + " (" + type.getName() + ")");
}
Field field = metadata.field;
// if (entry.value == null) continue; // I don't remember what this did. :(
try {
field.set(object, readValue(field.getType().getClassOfType(), metadata.elementType, child));
} catch (IllegalAccessException ex) {
throw new SerializationException(
"Error accessing field: " + field.getName() + " (" + type.getName() + ")", ex);
} catch (SerializationException ex) {
ex.addTrace(field.getName() + " (" + type.getName() + ")");
throw ex;
} catch (RuntimeException runtimeEx) {
SerializationException ex = new SerializationException(runtimeEx);
ex.addTrace(field.getName() + " (" + type.getName() + ")");
throw ex;
}
}
}
/** @param elementType May be null if the type is unknown. */
public void writeField(Object object, String fieldName, String jsonName, Class elementType) {
Type type = ReflectionCache.getType(object.getClass());
ObjectMap<String, FieldMetadata> fields = typeToFields.get(type);
if (fields == null) fields = cacheFields(type);
FieldMetadata metadata = fields.get(fieldName);
if (metadata == null)
throw new SerializationException(
"Field not found: " + fieldName + " (" + type.getName() + ")");
Field field = metadata.field;
if (elementType == null) elementType = metadata.elementType;
try {
if (debug)
System.out.println("Writing field: " + field.getName() + " (" + type.getName() + ")");
writer.name(jsonName);
writeValue(field.get(object), field.getType().getClassOfType(), elementType);
} catch (IllegalAccessException ex) {
throw new SerializationException(
"Error accessing field: " + field.getName() + " (" + type.getName() + ")", ex);
} catch (SerializationException ex) {
ex.addTrace(field + " (" + type.getName() + ")");
throw ex;
} catch (Exception runtimeEx) {
SerializationException ex = new SerializationException(runtimeEx);
ex.addTrace(field + " (" + type.getName() + ")");
throw ex;
}
}
private Object[] getDefaultValues(Type type) {
if (!usePrototypes) return null;
if (classToDefaultValues.containsKey(type)) return classToDefaultValues.get(type);
Object object;
try {
object = newInstance(type);
} catch (Exception ex) {
classToDefaultValues.put(type, null);
return null;
}
ObjectMap<String, FieldMetadata> fields = typeToFields.get(type);
if (fields == null) fields = cacheFields(type);
Object[] values = new Object[fields.size];
classToDefaultValues.put(type, values);
int i = 0;
for (FieldMetadata metadata : fields.values()) {
Field field = metadata.field;
try {
values[i++] = field.get(object);
} catch (IllegalAccessException ex) {
throw new SerializationException(
"Error accessing field: " + field.getName() + " (" + type.getName() + ")", ex);
} catch (SerializationException ex) {
ex.addTrace(field + " (" + type.getName() + ")");
throw ex;
} catch (RuntimeException runtimeEx) {
SerializationException ex = new SerializationException(runtimeEx);
ex.addTrace(field + " (" + type.getName() + ")");
throw ex;
}
}
return values;
}
public void writeFields(Object object) {
Type type = ReflectionCache.getType(object.getClass());
Object[] defaultValues = getDefaultValues(type);
ObjectMap<String, FieldMetadata> fields = typeToFields.get(type);
if (fields == null) fields = cacheFields(type);
int i = 0;
for (FieldMetadata metadata : new Values<FieldMetadata>(fields)) {
Field field = metadata.field;
try {
Object value = field.get(object);
if (defaultValues != null) {
Object defaultValue = defaultValues[i++];
if (value == null && defaultValue == null) continue;
if (value != null && defaultValue != null && value.equals(defaultValue)) continue;
}
if (debug)
System.out.println("Writing field: " + field.getName() + " (" + type.getName() + ")");
writer.name(field.getName());
writeValue(value, field.getType().getClassOfType(), metadata.elementType);
} catch (IllegalAccessException ex) {
throw new SerializationException(
"Error accessing field: " + field.getName() + " (" + type.getName() + ")", ex);
} catch (SerializationException ex) {
ex.addTrace(field + " (" + type.getName() + ")");
throw ex;
} catch (Exception runtimeEx) {
SerializationException ex = new SerializationException(runtimeEx);
ex.addTrace(field + " (" + type.getName() + ")");
throw ex;
}
}
}
public String getTag(Type type) {
String tag = classToTag.get(type);
if (tag != null) return tag;
return type.getName();
}
/**
* @param clazz May be null if the type is unknown.
* @param elementType May be null if the type is unknown.
* @return May be null.
*/
public <T> T readValue(Class<T> clazz, Class elementType, JsonValue jsonData) {
if (jsonData == null) return null;
Type type = ReflectionCache.getType(clazz);
if (jsonData.isObject()) {
String className = typeName == null ? null : jsonData.getString(typeName, null);
if (className != null) {
jsonData.remove(typeName);
try {
type = ReflectionCache.forName(className);
} catch (ClassNotFoundException ex) {
type = tagToClass.get(className);
if (type == null) throw new SerializationException(ex);
}
}
Object object;
if (type != null) {
Serializer serializer = classToSerializer.get(type);
if (serializer != null) return (T) serializer.read(this, jsonData, type.getClassOfType());
object = newInstance(type);
if (object instanceof Serializable) {
((Serializable) object).read(this, jsonData);
return (T) object;
}
if (object instanceof HashMap) {
HashMap result = (HashMap) object;
for (JsonValue child = jsonData.child(); child != null; child = child.next())
result.put(child.name(), readValue(elementType, null, child));
return (T) result;
}
} else object = new OrderedMap();
if (object instanceof ObjectMap) {
ObjectMap result = (ObjectMap) object;
for (JsonValue child = jsonData.child(); child != null; child = child.next())
result.put(child.name(), readValue(elementType, null, child));
return (T) result;
}
readFields(object, jsonData);
return (T) object;
}
if (type != null) {
Serializer serializer = classToSerializer.get(type);
if (serializer != null) return (T) serializer.read(this, jsonData, type.getClassOfType());
}
if (jsonData.isArray()) {
if (type == null || type.isAssignableFrom(ReflectionCache.getType(Array.class))) {
Array newArray = new Array();
for (JsonValue child = jsonData.child(); child != null; child = child.next())
newArray.add(readValue(elementType, null, child));
return (T) newArray;
}
if (type.isAssignableFrom(ReflectionCache.getType(ArrayList.class))) {
ArrayList newArray = new ArrayList();
for (JsonValue child = jsonData.child(); child != null; child = child.next())
newArray.add(readValue(elementType, null, child));
return (T) newArray;
}
if (type.isArray()) {
Class componentType = type.getComponentType();
if (elementType == null) elementType = componentType;
Object newArray = ReflectionCache.newArray(componentType, jsonData.size());
Type arrayType = ReflectionCache.getType(newArray.getClass());
int i = 0;
for (JsonValue child = jsonData.child(); child != null; child = child.next())
arrayType.setArrayElement(newArray, i++, readValue(elementType, null, child));
return (T) newArray;
}
throw new SerializationException(
"Unable to convert value to required type: " + jsonData + " (" + type.getName() + ")");
}
Class t = type == null ? null : type.getClassOfType();
if (jsonData.isNumber()) {
try {
if (type == null || t == float.class || t == Float.class)
return (T) (Float) jsonData.asFloat();
if (t == int.class || t == Integer.class) return (T) (Integer) jsonData.asInt();
if (t == long.class || t == Long.class) return (T) (Long) jsonData.asLong();
if (t == double.class || t == Double.class) return (T) (Double) (double) jsonData.asFloat();
if (t == String.class) return (T) Float.toString(jsonData.asFloat());
if (t == short.class || t == Short.class) return (T) (Short) (short) jsonData.asInt();
if (t == byte.class || t == Byte.class) return (T) (Byte) (byte) jsonData.asInt();
} catch (NumberFormatException ignored) {
}
jsonData = new JsonValue(jsonData.asString());
}
if (jsonData.isBoolean()) {
try {
if (type == null || t == boolean.class || t == Boolean.class)
return (T) (Boolean) jsonData.asBoolean();
} catch (NumberFormatException ignored) {
}
jsonData = new JsonValue(jsonData.asString());
}
if (jsonData.isString()) {
String string = jsonData.asString();
if (type == null || t == String.class) return (T) string;
try {
if (t == int.class || t == Integer.class) return (T) Integer.valueOf(string);
if (t == float.class || t == Float.class) return (T) Float.valueOf(string);
if (t == long.class || t == Long.class) return (T) Long.valueOf(string);
if (t == double.class || t == Double.class) return (T) Double.valueOf(string);
if (t == short.class || t == Short.class) return (T) Short.valueOf(string);
if (t == byte.class || t == Byte.class) return (T) Byte.valueOf(string);
} catch (NumberFormatException ignored) {
}
if (t == boolean.class || t == Boolean.class) return (T) Boolean.valueOf(string);
if (t == char.class || t == Character.class) return (T) (Character) string.charAt(0);
if (type.isEnum()) {
Object[] constants = type.getEnumConstants();
for (int i = 0, n = constants.length; i < n; i++)
if (string.equals(constants[i].toString())) return (T) constants[i];
}
if (t == CharSequence.class) return (T) string;
throw new SerializationException(
"Unable to convert value to required type: " + jsonData + " (" + type.getName() + ")");
}
return null;
}
/**
* @param value May be null.
* @param knownClass May be null if the type is unknown.
* @param elementType May be null if the type is unknown.
*/
public void writeValue(Object value, Class knownClass, Class elementType) {
try {
if (value == null) {
writer.value(null);
return;
}
Type knownType = ReflectionCache.getType(knownClass);
Type actualType = ReflectionCache.getType(value.getClass());
if (actualType.isPrimitive()
|| actualType.getClassOfType() == String.class
|| actualType.getClassOfType() == Integer.class
|| actualType.getClassOfType() == Boolean.class
|| actualType.getClassOfType() == Float.class
|| actualType.getClassOfType() == Long.class
|| actualType.getClassOfType() == Double.class
|| actualType.getClassOfType() == Short.class
|| actualType.getClassOfType() == Byte.class
|| actualType.getClassOfType() == Character.class) {
writer.value(value);
return;
}
if (value instanceof Serializable) {
writeObjectStart(actualType.getClassOfType(), knownType.getClassOfType());
((Serializable) value).write(this);
writeObjectEnd();
return;
}
Serializer serializer = classToSerializer.get(actualType);
if (serializer != null) {
serializer.write(this, value, knownType.getClassOfType());
return;
}
if (value instanceof Array) {
if (knownType != null && actualType != knownType)
throw new SerializationException(
"Serialization of an Array other than the known type is not supported.\n"
+ "Known type: "
+ knownType
+ "\nActual type: "
+ actualType);
writeArrayStart();
Array array = (Array) value;
for (int i = 0, n = array.size; i < n; i++) writeValue(array.get(i), elementType, null);
writeArrayEnd();
return;
}
if (value instanceof Collection) {
if (knownType != null && actualType != knownType)
throw new SerializationException(
"Serialization of a Collection other than the known type is not supported.\n"
+ "Known type: "
+ knownType
+ "\nActual type: "
+ actualType);
writeArrayStart();
for (Object item : (Collection) value) writeValue(item, elementType, null);
writeArrayEnd();
return;
}
if (actualType.isArray()) {
if (elementType == null) elementType = actualType.getComponentType();
int length = actualType.getArrayLength(value);
writeArrayStart();
for (int i = 0; i < length; i++)
writeValue(actualType.getArrayElement(value, i), elementType, null);
writeArrayEnd();
return;
}
if (value instanceof OrderedMap) {
if (knownType == null) knownType = ReflectionCache.getType(OrderedMap.class);
writeObjectStart(actualType.getClassOfType(), knownType.getClassOfType());
OrderedMap map = (OrderedMap) value;
for (Object key : map.orderedKeys()) {
writer.name(convertToString(key));
writeValue(map.get(key), elementType, null);
}
writeObjectEnd();
return;
}
if (value instanceof ArrayMap) {
if (knownType == null) knownType = ReflectionCache.getType(ArrayMap.class);
writeObjectStart(actualType.getClassOfType(), knownType.getClassOfType());
ArrayMap map = (ArrayMap) value;
for (int i = 0, n = map.size; i < n; i++) {
writer.name(convertToString(map.keys[i]));
writeValue(map.values[i], elementType, null);
}
writeObjectEnd();
return;
}
if (value instanceof ObjectMap) {
if (knownType == null) knownType = ReflectionCache.getType(OrderedMap.class);
writeObjectStart(actualType.getClassOfType(), knownType.getClassOfType());
for (Entry entry : ((ObjectMap<?, ?>) value).entries()) {
writer.name(convertToString(entry.key));
writeValue(entry.value, elementType, null);
}
writeObjectEnd();
return;
}
if (value instanceof Map) {
if (knownType == null) knownType = ReflectionCache.getType(HashMap.class);
writeObjectStart(actualType.getClassOfType(), knownType.getClassOfType());
for (Map.Entry entry : ((Map<?, ?>) value).entrySet()) {
writer.name(convertToString(entry.getKey()));
writeValue(entry.getValue(), elementType, null);
}
writeObjectEnd();
return;
}
if (actualType.isEnum()) {
writer.value(value);
return;
}
writeObjectStart(actualType.getClassOfType(), knownType.getClassOfType());
writeFields(value);
writeObjectEnd();
} catch (IOException ex) {
throw new SerializationException(ex);
}
}