List of usage examples for java.lang.reflect Field getName
public String getName()
From source file:de.micromata.genome.util.runtime.ClassUtils.java
/** * Gets all fields from a class. Keys are the field names as strings. * * @param type the type//from w ww. j a v a 2s. c om * @return the all fields */ //CHECKSTYLE.OFF FinalParameter Precondition cast. public static Map<String, Field> getAllFields(final Class<?> type) { Map<String, Field> fieldMap = new HashMap<>(); for (Field field : type.getDeclaredFields()) { fieldMap.put(field.getName(), field); } Class<?> nextType = type.getSuperclass(); while (nextType != Object.class) { for (Field field : nextType.getDeclaredFields()) { fieldMap.put(field.getName(), field); } nextType = nextType.getSuperclass(); } //CHECKSTYLE.ON return fieldMap; }
From source file:org.chorusbdd.chorus.spring.SpringContextInjector.java
private static void injectResourceFields(ApplicationContext springContext, Object handler, Class handlerClass) { ChorusLog log = ChorusLogFactory.getLog(SpringContextInjector.class); //inject handler fields with the Spring beans Field[] fields = handlerClass.getDeclaredFields(); for (Field field : fields) { Resource resourceAnnotation = field.getAnnotation(Resource.class); if (resourceAnnotation != null) { boolean beanNameInAnnotation = !"".equals(resourceAnnotation.name()); String name = beanNameInAnnotation ? resourceAnnotation.name() : field.getName(); Object bean = springContext.getBean(name); log.trace("Found spring Resource annotation for field " + field + " will attempt to inject Spring bean " + bean); if (bean == null) { log.error(//ww w .j a va 2s .com "Failed to set @Resource (" + name + "). No such bean exists in application context."); } try { field.setAccessible(true); field.set(handler, bean); } catch (IllegalAccessException e) { log.error("Failed to set @Resource (" + name + ") with bean of type: " + bean.getClass(), e); } } } Class superclass = handlerClass.getSuperclass(); if (superclass != Object.class) { injectResourceFields(springContext, handler, superclass); } }
From source file:common.utils.ReflectionAssert.java
/** * All fields that have a getter with the same name will be checked by an assertNotNull. * Other fields will be ignored/*from w w w . ja v a 2 s.com*/ * * @param message * @param object */ public static void assertAccessablePropertiesNotNull(String message, Object object) { Set<Field> fields = ReflectionUtils.getAllFields(object.getClass()); for (Field field : fields) { Method getter = ReflectionUtils.getGetter(object.getClass(), field.getName(), false); if (getter != null) { Object result = null; try { result = getter.invoke(object, ArrayUtils.EMPTY_OBJECT_ARRAY); } catch (Exception e) { throw new UnitilsException(e); } String formattedMessage = formatMessage(message, "Property '" + field.getName() + "' in object '" + object.toString() + "' is null "); assertNotNull(formattedMessage, result); } } }
From source file:com.stratio.deep.es.utils.UtilES.java
/** * converts from an entity class with deep's anotations to JSONObject. * * @param t an instance of an object of type T to convert to JSONObject. * @param <T> the type of the object to convert. * @return the provided object converted to JSONObject. * @throws IllegalAccessException//from www. j a v a2s. co m * @throws InstantiationException * @throws InvocationTargetException */ public static <T> JSONObject getJsonFromObject(T t) throws IllegalAccessException, InstantiationException, InvocationTargetException { Field[] fields = AnnotationUtils.filterDeepFields(t.getClass()); JSONObject json = new JSONObject(); for (Field field : fields) { Method method = Utils.findGetter(field.getName(), t.getClass()); Object object = method.invoke(t); if (object != null) { if (Collection.class.isAssignableFrom(field.getType())) { Collection c = (Collection) object; Iterator iterator = c.iterator(); List<JSONObject> innerJsonList = new ArrayList<>(); while (iterator.hasNext()) { innerJsonList.add(getJsonFromObject((IDeepType) iterator.next())); } json.put(AnnotationUtils.deepFieldName(field), innerJsonList); } else if (IDeepType.class.isAssignableFrom(field.getType())) { json.put(AnnotationUtils.deepFieldName(field), getJsonFromObject((IDeepType) object)); } else { json.put(AnnotationUtils.deepFieldName(field), object); } } } return json; }
From source file:org.mstc.zmq.json.Encoder.java
public static String encode(Object o) throws IOException { StringWriter writer = new StringWriter(); ObjectMapper mapper = new ObjectMapper(); mapper.enable(DeserializationFeature.USE_BIG_DECIMAL_FOR_FLOATS); JsonFactory factory = mapper.getFactory(); try (JsonGenerator g = factory.createGenerator(writer)) { g.writeStartObject();/* ww w.j a v a2s.c o m*/ for (Field f : o.getClass().getDeclaredFields()) { try { f.setAccessible(true); Object value = f.get(o); if (value != null) { if (f.getType().isAssignableFrom(List.class)) { String items = mapper.writeValueAsString(value); g.writeStringField(f.getName(), items); } else if (f.getType().isArray()) { if (f.getType().getComponentType().isAssignableFrom(byte.class)) { g.writeBinaryField(f.getName(), (byte[]) value); } else { int length = Array.getLength(value); g.writeFieldName(f.getName()); g.writeStartArray(); for (int i = 0; i < length; i++) { Object av = Array.get(value, i); if (av instanceof Double) { g.writeNumber(new BigDecimal((Double) av).toPlainString()); } else if (av instanceof Float) { g.writeNumber(new BigDecimal((Float) av).toPlainString()); } else if (av instanceof Integer) { g.writeNumber(new BigDecimal((Integer) av).toPlainString()); } else { g.writeObject(av); } /*if (av instanceof Double) g.writeNumber(new BigDecimal((Double) av)); else if (av instanceof Float) g.writeNumber(new BigDecimal((Float) av)); else if (av instanceof Integer) g.writeNumber((Integer) av);*/ } g.writeEndArray(); } } else { g.writeObjectField(f.getName(), value); } } } catch (IllegalAccessException e) { logger.warn("Could not get field: {}", f.getName(), e); } } g.writeEndObject(); } if (logger.isDebugEnabled()) logger.debug(writer.toString()); return writer.toString(); }
From source file:ReflectUtil.java
/** * Fetches all fields of all access types from the supplied class and super * classes. Fieldss that have been overridden in the inheritance hierarchy are * only returned once, using the instance lowest down the hierarchy. * * @param clazz the class to inspect/* w w w . j a v a 2s. co m*/ * @return a collection of fields */ public static Collection<Field> getFields(Class<?> clazz) { Map<String, Field> fields = new HashMap<String, Field>(); while (clazz != null) { for (Field field : clazz.getDeclaredFields()) { if (!fields.containsKey(field.getName())) { fields.put(field.getName(), field); } } clazz = clazz.getSuperclass(); } return fields.values(); }
From source file:com.stratio.deep.es.utils.UtilES.java
/** * converts from an entity class with deep's anotations to JSONObject. * * @param t an instance of an object of type T to convert to JSONObject. * @param <T> the type of the object to convert. * @return the provided object converted to JSONObject. * @throws IllegalAccessException/*from w w w . j a va 2s . c o m*/ * @throws InstantiationException * @throws InvocationTargetException */ public static <T> LinkedMapWritable getLinkedMapWritableFromObject(T t) throws IllegalAccessException, InstantiationException, InvocationTargetException { Field[] fields = AnnotationUtils.filterDeepFields(t.getClass()); LinkedMapWritable linkedMapWritable = new LinkedMapWritable(); for (Field field : fields) { Method method = Utils.findGetter(field.getName(), t.getClass()); Object object = method.invoke(t); if (object != null) { if (Collection.class.isAssignableFrom(field.getType())) { Collection c = (Collection) object; Iterator iterator = c.iterator(); List<LinkedMapWritable> innerJsonList = new ArrayList<>(); while (iterator.hasNext()) { innerJsonList.add(getLinkedMapWritableFromObject((IDeepType) iterator.next())); } // linkedMapWritable.put(new Text(AnnotationUtils.deepFieldName(field)), new // LinkedMapWritable[innerJsonList.size()]); } else if (IDeepType.class.isAssignableFrom(field.getType())) { linkedMapWritable.put(new Text(AnnotationUtils.deepFieldName(field)), getLinkedMapWritableFromObject((IDeepType) object)); } else { linkedMapWritable.put(new Text(AnnotationUtils.deepFieldName(field)), getWritableFromObject(object)); } } } return linkedMapWritable; }
From source file:de.codesourcery.luaparser.LuaToJSON.java
private static int getOffset(JSONTokener tokener) throws NoSuchFieldException, SecurityException, IllegalArgumentException, IllegalAccessException { for (Field f : JSONTokener.class.getDeclaredFields()) { if (f.getName().equals("index")) { f.setAccessible(true);// w ww .jav a2 s . com return ((Number) f.get(tokener)).intValue(); } } throw new RuntimeException("Internal error,failed to find field 'index' in JSONTokener"); }
From source file:com.antsdb.saltedfish.util.UberUtil.java
/** * warning, this method has no consideration of performance. it is written to help logging objects * /* w w w. j av a 2 s. co m*/ * @param obj * @return */ public static String toString(Object obj) { if (obj == null) { return "NULL"; } StringBuilder buf = new StringBuilder(); for (Field i : obj.getClass().getFields()) { if ((i.getModifiers() & Modifier.STATIC) != 0) { continue; } buf.append(i.getName()); buf.append(":"); Object value; try { value = i.get(obj); } catch (Exception x) { value = x.getMessage(); } if (value != null) { buf.append(value.toString()); } else { buf.append("NULL"); } buf.append('\n'); } return buf.toString(); }
From source file:net.minecraftforge.common.util.EnumHelper.java
@SuppressWarnings({ "unchecked", "serial" })
@Nullable/* w w w.ja va 2 s . c o m*/
private static <T extends Enum<?>> T addEnum(boolean test, final Class<T> enumType, @Nullable String enumName,
final Class<?>[] paramTypes, @Nullable Object[] paramValues) {
if (!isSetup) {
setup();
}
Field valuesField = null;
Field[] fields = enumType.getDeclaredFields();
for (Field field : fields) {
String name = field.getName();
if (name.equals("$VALUES") || name.equals("ENUM$VALUES")) //Added 'ENUM$VALUES' because Eclipse's internal compiler doesn't follow standards
{
valuesField = field;
break;
}
}
int flags = (FMLForgePlugin.RUNTIME_DEOBF ? Modifier.PUBLIC : Modifier.PRIVATE) | Modifier.STATIC
| Modifier.FINAL | 0x1000 /*SYNTHETIC*/;
if (valuesField == null) {
String valueType = String.format("[L%s;", enumType.getName().replace('.', '/'));
for (Field field : fields) {
if ((field.getModifiers() & flags) == flags
&& field.getType().getName().replace('.', '/').equals(valueType)) //Apparently some JVMs return .'s and some don't..
{
valuesField = field;
break;
}
}
}
if (valuesField == null) {
final List<String> lines = Lists.newArrayList();
lines.add(String.format("Could not find $VALUES field for enum: %s", enumType.getName()));
lines.add(String.format("Runtime Deobf: %s", FMLForgePlugin.RUNTIME_DEOBF));
lines.add(String.format("Flags: %s",
String.format("%16s", Integer.toBinaryString(flags)).replace(' ', '0')));
lines.add("Fields:");
for (Field field : fields) {
String mods = String.format("%16s", Integer.toBinaryString(field.getModifiers())).replace(' ', '0');
lines.add(String.format(" %s %s: %s", mods, field.getName(), field.getType().getName()));
}
for (String line : lines)
FMLLog.log.fatal(line);
if (test) {
throw new EnhancedRuntimeException("Could not find $VALUES field for enum: " + enumType.getName()) {
@Override
protected void printStackTrace(WrappedPrintStream stream) {
for (String line : lines)
stream.println(line);
}
};
}
return null;
}
if (test) {
Object ctr = null;
Exception ex = null;
try {
ctr = getConstructorAccessor(enumType, paramTypes);
} catch (Exception e) {
ex = e;
}
if (ctr == null || ex != null) {
throw new EnhancedRuntimeException(
String.format("Could not find constructor for Enum %s", enumType.getName()), ex) {
private String toString(Class<?>[] cls) {
StringBuilder b = new StringBuilder();
for (int x = 0; x < cls.length; x++) {
b.append(cls[x].getName());
if (x != cls.length - 1)
b.append(", ");
}
return b.toString();
}
@Override
protected void printStackTrace(WrappedPrintStream stream) {
stream.println("Target Arguments:");
stream.println(" java.lang.String, int, " + toString(paramTypes));
stream.println("Found Constructors:");
for (Constructor<?> ctr : enumType.getDeclaredConstructors()) {
stream.println(" " + toString(ctr.getParameterTypes()));
}
}
};
}
return null;
}
valuesField.setAccessible(true);
try {
T[] previousValues = (T[]) valuesField.get(enumType);
T newValue = makeEnum(enumType, enumName, previousValues.length, paramTypes, paramValues);
setFailsafeFieldValue(valuesField, null, ArrayUtils.add(previousValues, newValue));
cleanEnumCache(enumType);
return newValue;
} catch (Exception e) {
FMLLog.log.error("Error adding enum with EnumHelper.", e);
throw new RuntimeException(e);
}
}