private ObjectMap<String, FieldMetadata> cacheFields(Class type) {
ArrayList<Field> allFields = new ArrayList();
Class nextClass = type;
while (nextClass != 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);
int modifiers = field.getModifiers();
if (Modifier.isTransient(modifiers)) continue;
if (Modifier.isStatic(modifiers)) 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;
}
/**
* Returns a new or existing pool for the specified type, stored in a a Class to {@link
* ReflectionPool} map. The max size of the pool used is 100.
*/
public <T> Pool<T> get(Class<T> type) {
ReflectionPool pool = typePools.get(type);
if (pool == null) {
pool = new ReflectionPool(type, 4, 100);
typePools.put(type, pool);
}
return pool;
}
private Object[] getDefaultValues(Class 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;
}
/* (non-Javadoc)
* @see Job#setProperty(QualifiedName,Object)
*/
protected void setProperty(QualifiedName key, Object value) {
// thread safety: (Concurrency001 - copy on write)
if (value == null) {
if (properties == null) return;
ObjectMap temp = (ObjectMap) properties.clone();
temp.remove(key);
if (temp.isEmpty()) properties = null;
else properties = temp;
} else {
ObjectMap temp = properties;
if (temp == null) temp = new ObjectMap(5);
else temp = (ObjectMap) properties.clone();
temp.put(key, value);
properties = temp;
}
}
/**
* @param type 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> type, Class elementType, Object jsonData) {
if (jsonData == null) return null;
if (jsonData instanceof OrderedMap) {
OrderedMap<String, Object> jsonMap = (OrderedMap) jsonData;
String className = typeName == null ? null : (String) jsonMap.remove(typeName);
if (className != null) {
try {
type = (Class<T>) Class.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, jsonMap, type);
object = newInstance(type);
if (object instanceof Serializable) {
((Serializable) object).read(this, jsonMap);
return (T) object;
}
if (object instanceof HashMap) {
HashMap result = (HashMap) object;
for (Entry entry : jsonMap.entries())
result.put(entry.key, readValue(elementType, null, entry.value));
return (T) result;
}
} else object = new OrderedMap();
if (object instanceof ObjectMap) {
ObjectMap result = (ObjectMap) object;
for (String key : jsonMap.orderedKeys())
result.put(key, readValue(elementType, null, jsonMap.get(key)));
return (T) result;
}
readFields(object, jsonMap);
return (T) object;
}
if (type != null) {
Serializer serializer = classToSerializer.get(type);
if (serializer != null) return (T) serializer.read(this, jsonData, type);
}
if (jsonData instanceof Array) {
Array array = (Array) jsonData;
if (type == null || Array.class.isAssignableFrom(type)) {
Array newArray = type == null ? new Array() : (Array) newInstance(type);
newArray.ensureCapacity(array.size);
for (int i = 0, n = array.size; i < n; i++)
newArray.add(readValue(elementType, null, array.get(i)));
return (T) newArray;
}
if (ArrayList.class.isAssignableFrom(type)) {
ArrayList newArray = type == null ? new ArrayList() : (ArrayList) newInstance(type);
newArray.ensureCapacity(array.size);
for (int i = 0, n = array.size; i < n; i++)
newArray.add(readValue(elementType, null, array.get(i)));
return (T) newArray;
}
if (type.isArray()) {
Class componentType = type.getComponentType();
if (elementType == null) elementType = componentType;
Object newArray = java.lang.reflect.Array.newInstance(componentType, array.size);
for (int i = 0, n = array.size; i < n; i++)
java.lang.reflect.Array.set(newArray, i, readValue(elementType, null, array.get(i)));
return (T) newArray;
}
throw new SerializationException(
"Unable to convert value to required type: " + jsonData + " (" + type.getName() + ")");
}
if (jsonData instanceof Float) {
Float floatValue = (Float) jsonData;
try {
if (type == null || type == float.class || type == Float.class)
return (T) (Float) floatValue;
if (type == int.class || type == Integer.class) return (T) (Integer) floatValue.intValue();
if (type == long.class || type == Long.class) return (T) (Long) floatValue.longValue();
if (type == double.class || type == Double.class)
return (T) (Double) floatValue.doubleValue();
if (type == short.class || type == Short.class) return (T) (Short) floatValue.shortValue();
if (type == byte.class || type == Byte.class) return (T) (Byte) floatValue.byteValue();
} catch (NumberFormatException ignored) {
}
jsonData = String.valueOf(jsonData);
}
if (jsonData instanceof Boolean) jsonData = String.valueOf(jsonData);
if (jsonData instanceof String) {
String string = (String) jsonData;
if (type == null || type == String.class) return (T) jsonData;
try {
if (type == int.class || type == Integer.class) return (T) Integer.valueOf(string);
if (type == float.class || type == Float.class) return (T) Float.valueOf(string);
if (type == long.class || type == Long.class) return (T) Long.valueOf(string);
if (type == double.class || type == Double.class) return (T) Double.valueOf(string);
if (type == short.class || type == Short.class) return (T) Short.valueOf(string);
if (type == byte.class || type == Byte.class) return (T) Byte.valueOf(string);
} catch (NumberFormatException ignored) {
}
if (type == boolean.class || type == Boolean.class) return (T) Boolean.valueOf(string);
if (type == char.class || type == 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 (type == CharSequence.class) return (T) string;
throw new SerializationException(
"Unable to convert value to required type: " + jsonData + " (" + type.getName() + ")");
}
return null;
}
public void addClassTag(String tag, Class type) {
tagToClass.put(tag, type);
classToTag.put(type, tag);
}
public <T> void setSerializer(Class<T> type, Serializer<T> serializer) {
classToSerializer.put(type, serializer);
}
public void setAttribute(String name, String value) {
if (attributes == null) attributes = new ObjectMap(8);
attributes.put(name, value);
}
/**
* @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;
}
public <T> void setSerializer(Class<T> type, Serializer<T> serializer) {
classToSerializer.put(ReflectionCache.getType(type), serializer);
}