com.bluejeans.common.utils

Class MetaUtil

java.lang.Object

com.bluejeans.common.utils.MetaUtil

public class MetaUtil
extends Object

Meta utility.

Author:

Dinesh Ilindra

Field Summary

Fields

Modifier and Type	Field and Description
static List<Class<?>>	SIMPLE_RETURN_TYPE_LIST The simple return type list

Constructor Summary

Constructors

Constructor and Description
MetaUtil()

Method Summary

Modifier and Type	Method and Description
static List<Class<?>>	allExtendedClassesOf(Class<?> classz) All classes that the given class extends
static List<Field>	allFieldsOf(Class<?> classz) All fields that can be found on an object of the given class
static List<Method>	allMethodsOf(Class<?> classz) All methods that can be invoked on an object of the given class
static List<Field>	allSuperFieldsOf(Class<?> classz) All fields that can be found on an object's hierarchy other than itself of the given class
void	assignFromHierarchy(Object obj) For each field that the subclass has, if superclasses also have it, then fetch that value from hierarchy and set here.
static int	availablePort(int startPort, int maxCount) Get available server port from the given port inclusive, until the max count.
static Map<String,Object>	classNameObjectMap(Object... objects) Returns a map containing the object's class name as key with the object itself as value.
void	copyFields(Object dst, Object src) For each field that the destination has, if source also have it, then fetch that value from source and set in destination.
static Map<String,Object>	createMap(String key, Object value) Returns a new map which has single entry with the given key and value.
static Map<String,Object>	createParamMap(Object... params) Create a params map from given varargs.
static Map<String,String>	createPropsMap(String... args) Create a property map from given varargs.
static void	disableSslCertificates() Disables SSL certificates checks
static Map<String,Object>	fieldDataMap(Object target, boolean prependClassName, String methodPrefix, List<Class<?>> returnTypeList) Get the map of all the return values of all the methods starting with given prefix with the given return types of the given bean.
static Field	findFirstField(Class<?> clazz, String fieldName) Finds the first field by this name or null if not found.
static Field	findFirstFieldByType(Class<?> clazz, String typeName) Finds the first field by its type name or null if not found.
static Method	findFirstMethod(Class<?> clazz, String methodName) Finds the first method by this name or null if not found.
static Method	findFirstMethod(Class<?> classz, String methodName, int totalArguments) Find first method matching name and no.
static Method	findFirstMethodEndsWithAndReturns(Class<?> clazz, String methodName, Class<?> returnType) Finds the first method ending by this name and having this return type or null if not found.
static Method	findFirstMethodStartsWith(Class<?> clazz, String methodName) Finds the first method starting by this name or null if not found.
static Field	findFirstSuperField(Class<?> clazz, String fieldName) Finds the first super field by this name or null if not found.
static Method	findSetter(Class<?> classz, String propertyName) Finds the setter method for the property or null if not found.
static String	getResourceAsString(String resourceName) Get the resource as string.
static long	hash(String string) Computes a long hash for this string.
static void	registerAsMBean(Object bean) Register the instance as MBean.
static void	registerAsMBean(Object bean, String objectName) Register the instance as MBean with given name.
static Object	runNestedMethod(Object target, String nestedMethod) Run the nested method on the target object.
static Map<String,Object>	runNestedMethodsSilently(Object target, String nestedMethods) Run the nested methods silently on the target object.
static void	setPropertyIfExists(Object obj, String propertyName, Object propertyValue) Sets the given property if exists with the given value.
static void	shuffleArray(Object array) Shuffles the given array, if it is array.
static Map<String,Object>	simpleFieldDataMap(Object target, boolean prependClassName) Get the map of all the return values of all the methods with no arguments with simple return types of the given bean.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

SIMPLE_RETURN_TYPE_LIST

public static final List<Class<?>> SIMPLE_RETURN_TYPE_LIST

The simple return type list

Constructor Detail

MetaUtil

public MetaUtil()

Method Detail

createParamMap

public static Map<String,Object> createParamMap(Object... params)

Create a params map from given varargs.

Parameters:

params - the params

Returns:

the param map

getResourceAsString

public static String getResourceAsString(String resourceName)

Get the resource as string.

Parameters:

resourceName - the resource name

Returns:

the string value

registerAsMBean

public static void registerAsMBean(Object bean)
                            throws JMException

Register the instance as MBean.

Parameters:

bean - the bean

Throws:

JMException - implicit

registerAsMBean

public static void registerAsMBean(Object bean,
                                   String objectName)
                            throws JMException

Register the instance as MBean with given name.

Parameters:

bean - the bean

objectName - the object name

Throws:

JMException - implicit

findFirstMethodStartsWith

public static Method findFirstMethodStartsWith(Class<?> clazz,
                                               String methodName)

Finds the first method starting by this name or null if not found.

Parameters:

clazz - the class

methodName - the method name

Returns:

the first method found / null

findFirstMethodEndsWithAndReturns

public static Method findFirstMethodEndsWithAndReturns(Class<?> clazz,
                                                       String methodName,
                                                       Class<?> returnType)

Finds the first method ending by this name and having this return type or null if not found.

Parameters:

clazz - the class

methodName - the method name

returnType - the return type

Returns:

the first method found / null

findFirstMethod

public static Method findFirstMethod(Class<?> clazz,
                                     String methodName)

Finds the first method by this name or null if not found.

Parameters:

clazz - the class

methodName - the method name

Returns:

the first method found / null

findFirstMethod

public static Method findFirstMethod(Class<?> classz,
                                     String methodName,
                                     int totalArguments)

Find first method matching name and no. of arguments or null if none found.

Parameters:

classz - the class

methodName - the method name

totalArguments - the total no. of arguments

Returns:

the first method found / null

allExtendedClassesOf

public static List<Class<?>> allExtendedClassesOf(Class<?> classz)

All classes that the given class extends

Parameters:

classz - the class

Returns:

the set of all classes that this extends

allMethodsOf

public static List<Method> allMethodsOf(Class<?> classz)

All methods that can be invoked on an object of the given class

Parameters:

classz - the class

Returns:

the list of all methods that can be invoked

findFirstField

public static Field findFirstField(Class<?> clazz,
                                   String fieldName)

Finds the first field by this name or null if not found.

Parameters:

clazz - the class

fieldName - the field name

Returns:

the first field found / null

findFirstSuperField

public static Field findFirstSuperField(Class<?> clazz,
                                        String fieldName)

Finds the first super field by this name or null if not found.

Parameters:

clazz - the class

fieldName - the field name

Returns:

the first field found / null

findFirstFieldByType

public static Field findFirstFieldByType(Class<?> clazz,
                                         String typeName)

Finds the first field by its type name or null if not found.

Parameters:

clazz - the class

typeName - the field type simple name

Returns:

the first field found / null

allFieldsOf

public static List<Field> allFieldsOf(Class<?> classz)

All fields that can be found on an object of the given class

Parameters:

classz - the class

Returns:

the list of all fields that can be accessed

allSuperFieldsOf

public static List<Field> allSuperFieldsOf(Class<?> classz)

All fields that can be found on an object's hierarchy other than itself of the given class

Parameters:

classz - the class

Returns:

the list of all fields that can be accessed

findSetter

public static Method findSetter(Class<?> classz,
                                String propertyName)

Finds the setter method for the property or null if not found.

Parameters:

classz - the class

propertyName - the property name

Returns:

the setter

setPropertyIfExists

public static void setPropertyIfExists(Object obj,
                                       String propertyName,
                                       Object propertyValue)

Sets the given property if exists with the given value.

Parameters:

obj - the object

propertyName - the property name

propertyValue - the property value

fieldDataMap

public static Map<String,Object> fieldDataMap(Object target,
                                              boolean prependClassName,
                                              String methodPrefix,
                                              List<Class<?>> returnTypeList)

Get the map of all the return values of all the methods starting with given prefix with the given return types of the given bean.

Parameters:

target - the target object

prependClassName - the prepend class name

methodPrefix - the method prefix

returnTypeList - the return types list

Returns:

the field data map

simpleFieldDataMap

public static Map<String,Object> simpleFieldDataMap(Object target,
                                                    boolean prependClassName)

Get the map of all the return values of all the methods with no arguments with simple return types of the given bean.

Parameters:

target - the target object

prependClassName - the prepend class name

Returns:

the field data map

classNameObjectMap

public static Map<String,Object> classNameObjectMap(Object... objects)

Returns a map containing the object's class name as key with the object itself as value.

Parameters:

objects - the objects

Returns:

the name map

createMap

public static Map<String,Object> createMap(String key,
                                           Object value)

Returns a new map which has single entry with the given key and value.

Parameters:

key - the key

value - the value

Returns:

the map

createPropsMap

public static Map<String,String> createPropsMap(String... args)

Create a property map from given varargs.

Parameters:

args - the arguments

Returns:

the prop map

shuffleArray

public static void shuffleArray(Object array)

Shuffles the given array, if it is array.

Parameters:

array - the array to shuffle

availablePort

public static int availablePort(int startPort,
                                int maxCount)

Get available server port from the given port inclusive, until the max count.

Parameters:

startPort - the start port

maxCount - the max count

Returns:

the available port

runNestedMethod

public static Object runNestedMethod(Object target,
                                     String nestedMethod)
                              throws ReflectiveOperationException,
                                     ScriptException

Run the nested method on the target object.

Parameters:

target - the target object

nestedMethod - the nested method

Throws:

ScriptException - when there is a problem in script

ReflectiveOperationException - when a problem in reflection

runNestedMethodsSilently

public static Map<String,Object> runNestedMethodsSilently(Object target,
                                                          String nestedMethods)

Run the nested methods silently on the target object.

Parameters:

target - the target object

nestedMethods - the nested methods separated by ;;

disableSslCertificates

public static void disableSslCertificates()
                                   throws GeneralSecurityException

Disables SSL certificates checks

Throws:

GeneralSecurityException - if anything wrong happens

hash

public static long hash(String string)

Computes a long hash for this string.

Parameters:

string - the string

Returns:

the long hash

assignFromHierarchy

public void assignFromHierarchy(Object obj)

For each field that the subclass has, if superclasses also have it, then fetch that value from hierarchy and set here.

Parameters:

obj - the object

copyFields

public void copyFields(Object dst,
                       Object src)

For each field that the destination has, if source also have it, then fetch that value from source and set in destination.

Parameters:

dst - the destination object

src - the source object