private void validateClass(Class<?> source, ValidationProblemCollector problems) {
int modifiers = source.getModifiers();
if (Modifier.isInterface(modifiers)) {
problems.add("Must be a class, not an interface");
}
if (source.getEnclosingClass() != null) {
if (Modifier.isStatic(modifiers)) {
if (Modifier.isPrivate(modifiers)) {
problems.add("Class cannot be private");
}
} else {
problems.add("Enclosed classes must be static and non private");
}
}
Constructor<?>[] constructors = source.getDeclaredConstructors();
for (Constructor<?> constructor : constructors) {
if (constructor.getParameterTypes().length > 0) {
problems.add("Cannot declare a constructor that takes arguments");
break;
}
}
Field[] fields = source.getDeclaredFields();
for (Field field : fields) {
int fieldModifiers = field.getModifiers();
if (!field.isSynthetic()
&& !(Modifier.isStatic(fieldModifiers) && Modifier.isFinal(fieldModifiers))) {
problems.add(field, "Fields must be static final.");
}
}
}
/** Discovers interesting (that we care about) things about the class. */
protected void discover() {
for (Class<? extends Annotation> c : interestingAnnotations) {
addAnnotation(c);
}
List<Class<?>> lifecycleClasses = new ArrayList<Class<?>>();
lifecycleClasses.add(clazz);
EntityListeners entityLisAnn = (EntityListeners) getAnnotation(EntityListeners.class);
if (entityLisAnn != null && entityLisAnn.value() != null && entityLisAnn.value().length != 0)
for (Class<?> c : entityLisAnn.value()) lifecycleClasses.add(c);
for (Class<?> cls : lifecycleClasses) {
for (Method m : ReflectionUtils.getDeclaredAndInheritedMethods(cls)) {
for (Class<? extends Annotation> c : lifecycleAnnotations) {
if (m.isAnnotationPresent(c)) {
addLifecycleEventMethod(c, m, cls.equals(clazz) ? null : cls);
}
}
}
}
update();
for (Field field : ReflectionUtils.getDeclaredAndInheritedFields(clazz, true)) {
field.setAccessible(true);
int fieldMods = field.getModifiers();
if (field.isAnnotationPresent(Transient.class)) continue;
else if (field.isSynthetic() && (fieldMods & Modifier.TRANSIENT) == Modifier.TRANSIENT)
continue;
else if (mapr.getOptions().actLikeSerializer
&& ((fieldMods & Modifier.TRANSIENT) == Modifier.TRANSIENT)) continue;
else if (mapr.getOptions().ignoreFinals && ((fieldMods & Modifier.FINAL) == Modifier.FINAL))
continue;
else if (field.isAnnotationPresent(Id.class)) {
MappedField mf = new MappedField(field, clazz);
persistenceFields.add(mf);
update();
} else if (field.isAnnotationPresent(Property.class)
|| field.isAnnotationPresent(Reference.class)
|| field.isAnnotationPresent(Embedded.class)
|| field.isAnnotationPresent(Serialized.class)
|| isSupportedType(field.getType())
|| ReflectionUtils.implementsInterface(field.getType(), Serializable.class)) {
persistenceFields.add(new MappedField(field, clazz));
} else {
if (mapr.getOptions().defaultMapper != null)
persistenceFields.add(new MappedField(field, clazz));
else if (log.isWarningEnabled())
log.warning(
"Ignoring (will not persist) field: "
+ clazz.getName()
+ "."
+ field.getName()
+ " [type:"
+ field.getType().getName()
+ "]");
}
}
}
public static void main(String... args) {
try {
Class<?> c = Class.forName(args[0]);
int searchMods = 0x0;
for (int i = 1; i < args.length; i++) {
searchMods |= modifierFromString(args[i]);
}
Field[] flds = c.getDeclaredFields();
out.format(
"Fields in Class '%s' containing modifiers: %s%n",
c.getName(), Modifier.toString(searchMods));
boolean found = false;
for (Field f : flds) {
int foundMods = f.getModifiers();
// Require all of the requested modifiers to be present
if ((foundMods & searchMods) == searchMods) {
out.format(
"%-8s [ synthetic=%-5b enum_constant=%-5b ]%n",
f.getName(), f.isSynthetic(), f.isEnumConstant());
found = true;
}
}
if (!found) {
out.format("No matching fields%n");
}
// production code should handle this exception more gracefully
} catch (ClassNotFoundException x) {
x.printStackTrace();
}
}
/**
* @param clazz the class for which to return all fields
* @return all fields declared by the passed class and its superclasses
*/
public static Collection<Field> getAllFields(Class<?> clazz) {
// Note: use a linked hash map to keep the same order as the one used to declare the fields.
Map<String, Field> fields = new LinkedHashMap<String, Field>();
Class<?> targetClass = clazz;
while (targetClass != null) {
Field[] targetClassFields;
try {
targetClassFields = targetClass.getDeclaredFields();
} catch (NoClassDefFoundError e) {
// Provide a better exception message to more easily debug component loading issue.
// Specifically with this error message we'll known which component failed to be
// initialized.
throw new NoClassDefFoundError(
"Failed to get fields for class ["
+ targetClass.getName()
+ "] because the class ["
+ e.getMessage()
+ "] couldn't be found in the ClassLoader.");
}
for (Field field : targetClassFields) {
// Make sure that if the same field is declared in a class and its superclass
// only the field used in the class will be returned. Note that we need to do
// this check since the Field object doesn't implement the equals method using
// the field name.
if (!field.isSynthetic() && !fields.containsKey(field.getName())) {
fields.put(field.getName(), field);
}
}
targetClass = targetClass.getSuperclass();
}
return fields.values();
}
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;
}
private static boolean shouldSkip(Field field) {
int modifiers = field.getModifiers();
if ((modifiers & Modifier.TRANSIENT) == Modifier.TRANSIENT
|| (modifiers & Modifier.STATIC) == Modifier.STATIC
|| field.isSynthetic()
|| field.getType() == Class.class
|| field.getAnnotation(Ignore.class) != null) return true;
return false;
}
/**
* Constructs a Field Attributes object from the {@code f}.
*
* @param f the field to pull attributes from
*/
FieldAttributes(final Class<?> parentClazz, final Field f) {
Preconditions.checkNotNull(parentClazz);
this.parentClazz = parentClazz;
name = f.getName();
declaredType = f.getType();
isSynthetic = f.isSynthetic();
modifiers = f.getModifiers();
field = f;
}
private void createFields() {
Class<?> cls = object.getClass();
fields = cls.getDeclaredFields();
List<Field> fieldList = new ArrayList<Field>();
for (Field field : fields) {
if (!field.isSynthetic()) {
field.setAccessible(true);
fieldList.add(field);
}
}
fields = fieldList.toArray(new Field[fieldList.size()]);
}
private boolean _isIncludableField(Field f) {
/* I'm pretty sure synthetic fields are to be skipped...
* (methods definitely are)
*/
if (f.isSynthetic()) {
return false;
}
// Static fields are never included, nor transient
int mods = f.getModifiers();
if (Modifier.isStatic(mods) || Modifier.isTransient(mods)) {
return false;
}
return true;
}
private void appendModel(Object o) throws IOException {
w.write('{');
boolean sep = false;
for (Field field : o.getClass().getDeclaredFields()) {
if (!field.isSynthetic() && !Modifier.isStatic(field.getModifiers())) {
try {
field.setAccessible(true);
sep = append(field.getName(), field.get(o), sep) || sep;
} catch (IllegalAccessException e) {
// should never happen...
throw new RuntimeException(e);
}
}
}
w.write('}');
}
private void checkString(T instance) {
assertThat(
instance.toString(),
CoreMatchers.startsWith(
type.getCanonicalName().substring(type.getPackage().getName().length() + 1) + "{"));
assertThat(instance.toString(), endsWith("}"));
Class<?> currentType = type;
do {
for (Field field : type.getDeclaredFields()) {
if (!field.isSynthetic()
&& !Modifier.isStatic(field.getModifiers())
&& !ignoredFields.contains(field.getName())) {
assertThat(instance.toString(), containsString(field.getName()));
}
}
} while ((currentType = currentType.getSuperclass()) != Object.class);
}
private List<java.lang.reflect.Field> getInheritedFields(Class<?> type) {
List<java.lang.reflect.Field> result = new ArrayList<java.lang.reflect.Field>();
Class<?> i = type;
while (i != null && i != Object.class) {
while (i != null && i != Object.class) {
for (java.lang.reflect.Field field : i.getDeclaredFields()) {
if (!field.isSynthetic()) {
result.add(field);
}
}
i = i.getSuperclass();
}
}
return result;
}
public boolean excludeField(Field field, boolean serialize) {
if ((modifiers & field.getModifiers()) != 0) {
return true;
}
if (version != Excluder.IGNORE_VERSIONS
&& !isValidVersion(field.getAnnotation(Since.class), field.getAnnotation(Until.class))) {
return true;
}
if (field.isSynthetic()) {
return true;
}
if (requireExpose) {
Expose annotation = field.getAnnotation(Expose.class);
if (annotation == null || (serialize ? !annotation.serialize() : !annotation.deserialize())) {
return true;
}
}
if (!serializeInnerClasses && isInnerClass(field.getType())) {
return true;
}
if (isAnonymousOrLocal(field.getType())) {
return true;
}
List<ExclusionStrategy> list = serialize ? serializationStrategies : deserializationStrategies;
if (!list.isEmpty()) {
FieldAttributes fieldAttributes = new FieldAttributes(field);
for (ExclusionStrategy exclusionStrategy : list) {
if (exclusionStrategy.shouldSkipField(fieldAttributes)) {
return true;
}
}
}
return false;
}
private static void linkChildren(RArray parentRealView, ViewTrace parentTrace) {
Class viewClass = parentRealView.getClass();
Field[] fields = getAllFields(viewClass);
for (Field f : fields) {
if (f.isSynthetic()) {
continue;
}
Class fieldClass = f.getType();
if (RArray.class.isAssignableFrom(fieldClass)) {
try {
f.setAccessible(true);
Object o = f.get(parentRealView);
if (o instanceof TracingView) {
((TracingView) o).getTrace().parentView = parentTrace;
}
} catch (IllegalAccessException e) {
assert Utils.check(false, "can't read a view field " + e);
}
}
}
}
public static Field[] getFields(Class<?> c, boolean includeStatic, boolean includeTransient) {
String cacheKey = c.getCanonicalName() + ":" + includeStatic;
Field[] array = fieldCache.get(cacheKey);
if (array == null) {
ArrayList<Field> fields = new ArrayList<Field>();
List<Class<?>> classes = getClassHierarchy(c, false);
// Reverse order so we make sure we maintain consistent order
Collections.reverse(classes);
for (Class<?> clazz : classes) {
Field[] allFields = clazz.getDeclaredFields();
for (Field f : allFields) {
if ((!includeTransient)
&& ((f.getModifiers() & Modifier.TRANSIENT) == Modifier.TRANSIENT)) {
continue;
} else if (f.isSynthetic()) {
// Synthetic fields are bad!!!
continue;
}
boolean isStatic = (f.getModifiers() & Modifier.STATIC) == Modifier.STATIC;
if ((isStatic) && (!includeStatic)) {
continue;
}
if (f.getName().equalsIgnoreCase("serialVersionUID")) {
continue;
}
f.setAccessible(true);
fields.add(f);
}
}
array = fields.toArray(new Field[fields.size()]);
fieldCache.put(cacheKey, array);
}
return array;
}
TemplateVars() {
if (getClass().getSuperclass() != TemplateVars.class) {
throw new IllegalArgumentException("Class must extend TemplateVars directly");
}
ImmutableList.Builder<Field> fields = ImmutableList.builder();
Field[] declaredFields = getClass().getDeclaredFields();
for (Field field : declaredFields) {
if (field.isSynthetic() || isStaticFinal(field)) {
continue;
}
if (Modifier.isPrivate(field.getModifiers())) {
throw new IllegalArgumentException("Field cannot be private: " + field);
}
if (Modifier.isStatic(field.getModifiers())) {
throw new IllegalArgumentException("Field cannot be static unless also final: " + field);
}
if (field.getType().isPrimitive()) {
throw new IllegalArgumentException("Field cannot be primitive: " + field);
}
fields.add(field);
}
this.fields = fields.build();
}
@Test
public void testSynthetic() throws Exception {
assertThat(describe(first).isSynthetic(), is(first.isSynthetic()));
assertThat(describe(second).isSynthetic(), is(second.isSynthetic()));
}
@Override
public boolean isSynthetic() {
return field.isSynthetic();
}
/**
* 检测非法：static final 或者 加了{@link Ignore} 注解
*
* @param f
* @return
*/
public static boolean isInvalid(Field f) {
return (Modifier.isStatic(f.getModifiers()) && Modifier.isFinal(f.getModifiers()))
|| isIgnored(f)
|| f.isSynthetic();
}
private static void extractViewPattern(int depth, ViewTrace trace, StringBuilder p) {
if (!processedViewsForPatterns.add(trace)) {
p.append("(ALIASED) ");
}
p.append(trace.realView.getClass() + " size = " + trace.realView.size() + "\n");
indent(depth, p);
p.append(" use:");
if (trace.materializeCount == 0 && trace.sumCount == 0 && trace.getCount == 0) {
p.append(" UNUSED");
} else {
if (trace.getCount > 0) {
p.append(" get");
}
if (trace.materializeCount > 0) {
p.append(" materialize");
}
if (trace.sumCount > 0) {
p.append(" sum");
}
}
p.append("\n");
if (false) {
p.append(" allocationSite =");
Site.printSite(trace.allocationSite, p);
p.append("\n");
indent(depth, p);
}
RArray view = trace.realView;
Class viewClass = view.getClass();
Field[] fields = getAllFields(viewClass);
boolean printedField = false;
for (Field f : fields) {
if (f.isSynthetic()) {
continue;
}
Class fieldClass = f.getType();
if (RArray.class.isAssignableFrom(fieldClass)) {
continue; // these later
}
indent(depth, p);
p.append(" " + f.getName() + " ");
try {
f.setAccessible(true);
Object o = f.get(view);
p.append(o == null ? "null (" + fieldClass + ")" : o.getClass());
p.append("\n");
printedField = true;
} catch (IllegalAccessException e) {
assert Utils.check(false, "can't read a view field " + e);
}
}
boolean printNewline = printedField;
for (Field f : fields) {
if (f.isSynthetic()) {
continue;
}
Class fieldClass = f.getType();
if (!RArray.class.isAssignableFrom(fieldClass)) {
continue;
}
if (printNewline) {
p.append("\n");
printNewline = false;
}
indent(depth, p);
p.append(" " + f.getName() + " ");
try {
f.setAccessible(true);
Object o = f.get(view);
if (o instanceof TracingView) {
p.append("VIEW ");
TracingView child = (TracingView) o;
extractViewPattern(depth + 2, child.getTrace(), p);
} else {
p.append("ARRAY " + o.getClass() + " size = " + ((RArray) o).size());
if (o instanceof View) {
ps.println("MISSED VIEW " + o);
}
}
p.append("\n");
} catch (IllegalAccessException e) {
assert Utils.check(false, "can't read a view field " + e);
}
}
}
private static void dumpView(int depth, ViewTrace trace) {
printedIndividualViews.add(trace);
ps.println(trace.realView + " size = " + trace.realView.size());
if (TRACE_ALLOCATION_SITE) {
indent(depth);
ps.print(" allocationSite =");
Site.printSite(trace.allocationSite);
ps.println();
}
int unused = trace.unusedElements();
int redundant = trace.redundantGets();
boolean singleUse;
Site[] useSites;
if (TRACE_USE_SITES) {
useSites = trace.useSites.toArray(new Site[trace.useSites.size()]);
singleUse = (useSites.length == 1);
} else if (TRACE_SINGLE_USE_SITE) {
useSites = null;
singleUse = !trace.multipleUseSites;
} else {
useSites = null;
singleUse = false;
}
if (singleUse) {
indent(depth);
ps.print(" singleUseSite = US");
Site.printSite(useSites != null ? useSites[0] : trace.singleUseSite);
if (trace.getCount > 0) {
ps.println(" (get)");
} else if (trace.sumCount > 0) {
ps.println(" (sum)");
} else {
ps.println(" (materialize)");
}
} else if (trace.getCount > 0) {
if (TRACE_FIRST_GET_SITE) {
indent(depth);
ps.print(" firstGetSite =");
Site.printSite(trace.firstGetSite);
ps.println();
}
if (trace.materializeCount == 0 && trace.sumCount == 0) {
if (unused > 0) {
indent(depth);
ps.println(" unusedElements = " + unused);
}
if (redundant > 0) {
indent(depth);
ps.println(" redundantGets = " + redundant + " (no materialize, sum)");
}
}
} else {
if (trace.materializeCount == 0 && trace.sumCount == 0) {
indent(depth);
ps.println(" UNUSED");
} else {
indent(depth);
ps.println(
" materializeCount = "
+ trace.materializeCount
+ " sumCount = "
+ trace.sumCount
+ " getCount = "
+ trace.getCount);
}
}
if (TRACE_FIRST_MATERIALIZE_SITE && trace.materializeCount > 0 && !singleUse) {
indent(depth);
ps.print(" firstMaterializeSite =");
Site.printSite(trace.firstMaterializeSite);
ps.println();
}
if (TRACE_FIRST_SUM_SITE && trace.sumCount > 0 && !singleUse) {
indent(depth);
ps.print(" firstSumSite =");
Site.printSite(trace.firstSumSite);
ps.println();
}
if (TRACE_USE_SITES) {
if (useSites.length != 1) {
indent(depth);
ps.println(" useSites (" + useSites.length + "):");
for (Site s : useSites) {
indent(depth);
ps.print(" US");
Site.printSite(s);
ps.println();
}
}
}
ps.println();
RArray view = trace.realView;
Class viewClass = view.getClass();
Field[] fields = getAllFields(viewClass);
boolean printedField = false;
for (Field f : fields) {
if (f.isSynthetic()) {
continue;
}
Class fieldClass = f.getType();
if (RArray.class.isAssignableFrom(fieldClass)) {
continue; // these later
}
indent(depth);
ps.print(" " + f.getName() + " ");
try {
f.setAccessible(true);
ps.println(f.get(view));
printedField = true;
} catch (IllegalAccessException e) {
assert Utils.check(false, "can't read a view field " + e);
}
}
boolean printNewline = printedField;
for (Field f : fields) {
if (f.isSynthetic()) {
continue;
}
Class fieldClass = f.getType();
if (!RArray.class.isAssignableFrom(fieldClass)) {
continue;
}
if (printNewline) {
ps.println();
printNewline = false;
}
indent(depth);
ps.print(" " + f.getName() + " ");
try {
f.setAccessible(true);
Object o = f.get(view);
if (o instanceof TracingView) {
ps.print("VIEW ");
TracingView child = (TracingView) o;
dumpView(depth + 2, child.getTrace());
} else {
ps.print("ARRAY " + o + " size = " + ((RArray) o).size());
if (o instanceof View) {
ps.println("MISSED VIEW " + o);
}
}
ps.println();
} catch (IllegalAccessException e) {
assert Utils.check(false, "can't read a view field " + e);
}
}
}
