@InterfaceAudience.Public @InterfaceStability.Evolving public class ReflectionUtils extends Object
Constructor and Description |
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ReflectionUtils() |
Modifier and Type | Method and Description |
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static void |
cloneWritableInto(Writable dst,
Writable src)
Deprecated.
|
static <T> T |
copy(Configuration conf,
T src,
T dst)
Make a copy of the writable object using serialization to a buffer.
|
static <T> Class<T> |
getClass(T o)
Return the correctly-typed
Class of the given object. |
static List<Field> |
getDeclaredFieldsIncludingInherited(Class<?> clazz)
Gets all the declared fields of a class including fields declared in
superclasses.
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static List<Method> |
getDeclaredMethodsIncludingInherited(Class<?> clazz)
Gets all the declared methods of a class including methods declared in
superclasses.
|
static void |
logThreadInfo(org.slf4j.Logger log,
String title,
long minInterval)
Log the current thread stacks at INFO level.
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static void |
logThreadInfo(org.apache.commons.logging.Log log,
String title,
long minInterval)
Deprecated.
to be removed with 3.4.0. Use
logThreadInfo(Logger, String, long) instead. |
static <T> T |
newInstance(Class<T> theClass,
Configuration conf)
Create an object for the given class and initialize it from conf
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static <T> T |
newInstance(Class<T> theClass,
Configuration conf,
Class<?>[] argTypes,
Object... values)
Create an object for the given class and initialize it from conf
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static void |
printThreadInfo(PrintStream stream,
String title)
Print all of the thread's information and stack traces.
|
static void |
setConf(Object theObject,
Configuration conf)
Check and set 'configuration' if necessary.
|
static void |
setContentionTracing(boolean val) |
public static void setConf(Object theObject, Configuration conf)
theObject
- object for which to set configurationconf
- Configurationpublic static <T> T newInstance(Class<T> theClass, Configuration conf)
T
- Generics Type T.theClass
- class of which an object is createdconf
- Configurationpublic static <T> T newInstance(Class<T> theClass, Configuration conf, Class<?>[] argTypes, Object... values)
T
- Generics Type.theClass
- class of which an object is createdconf
- ConfigurationargTypes
- the types of the argumentsvalues
- the values of the argumentspublic static void setContentionTracing(boolean val)
public static void printThreadInfo(PrintStream stream, String title)
stream
- the stream totitle
- a string title for the stack trace@Deprecated public static void logThreadInfo(org.apache.commons.logging.Log log, String title, long minInterval)
logThreadInfo(Logger, String, long)
instead.log
- the logger that logs the stack tracetitle
- a descriptive title for the call stacksminInterval
- the minimum time from the lastpublic static void logThreadInfo(org.slf4j.Logger log, String title, long minInterval)
log
- the logger that logs the stack tracetitle
- a descriptive title for the call stacksminInterval
- the minimum time from the lastpublic static <T> Class<T> getClass(T o)
Class
of the given object.T
- Generics Type T.o
- object whose correctly-typed Class
is to be obtainedClass
of the given object.public static <T> T copy(Configuration conf, T src, T dst) throws IOException
T
- Generics Type.src
- the object to copy fromdst
- the object to copy into, which is destroyedconf
- configuration.IOException
- raised on errors performing I/O.@Deprecated public static void cloneWritableInto(Writable dst, Writable src) throws IOException
IOException
public static List<Field> getDeclaredFieldsIncludingInherited(Class<?> clazz)
clazz
- clazzCopyright © 2024 Apache Software Foundation. All rights reserved.