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java.lang.Object org.hibernate.util.ReflectHelper
public final class ReflectHelper
Utility class for various reflection operations.
Field Summary | |
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static Class[] |
NO_PARAM_SIGNATURE
|
static Object[] |
NO_PARAMS
|
static Class[] |
SINGLE_OBJECT_PARAM_SIGNATURE
|
Method Summary | |
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static Class |
classForName(String name)
Perform resolution of a class name. |
static Class |
classForName(String name,
Class caller)
Perform resolution of a class name. |
static Method |
extractEqualsMethod(Class clazz)
Encapsulation of getting hold of a class's equals method. |
static Method |
extractHashCodeMethod(Class clazz)
Encapsulation of getting hold of a class's hashCode method. |
static Object |
getConstantValue(String name)
Resolve a constant to its actual value. |
static Constructor |
getConstructor(Class clazz,
Type[] types)
Retrieve a constructor for the given class, with arguments matching the specified Hibernate mapping types . |
static Constructor |
getDefaultConstructor(Class clazz)
Retrieve the default (no arg) constructor from the given class. |
static Getter |
getGetter(Class theClass,
String name)
Directly retrieve the Getter reference via the BasicPropertyAccessor . |
static Method |
getMethod(Class clazz,
Method method)
|
static boolean |
implementsInterface(Class clazz,
Class intf)
Determine if the given class implements the given interface. |
static boolean |
isAbstractClass(Class clazz)
Determine if the given class is declared abstract. |
static boolean |
isFinalClass(Class clazz)
Determine is the given class is declared final. |
static boolean |
isPublic(Class clazz,
Member member)
Is this member publicly accessible. |
static boolean |
isPublic(Member member)
Is this member publicly accessible. |
static boolean |
overridesEquals(Class clazz)
Determine if the given class defines an Object.equals(java.lang.Object) override. |
static boolean |
overridesHashCode(Class clazz)
Determine if the given class defines a Object.hashCode() override. |
static Class |
reflectedPropertyClass(String className,
String name)
Attempt to resolve the specified property type through reflection. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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public static final Class[] NO_PARAM_SIGNATURE
public static final Object[] NO_PARAMS
public static final Class[] SINGLE_OBJECT_PARAM_SIGNATURE
Method Detail |
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public static Method extractEqualsMethod(Class clazz) throws NoSuchMethodException
equals
method.
clazz
- The class from which to extract the equals method.
NoSuchMethodException
- Should indicate an attempt to extract equals method from interface.public static Method extractHashCodeMethod(Class clazz) throws NoSuchMethodException
hashCode
method.
clazz
- The class from which to extract the hashCode method.
NoSuchMethodException
- Should indicate an attempt to extract hashCode method from interface.public static boolean overridesEquals(Class clazz)
Object.equals(java.lang.Object)
override.
clazz
- The class to check
public static boolean overridesHashCode(Class clazz)
Object.hashCode()
override.
clazz
- The class to check
public static boolean implementsInterface(Class clazz, Class intf)
clazz
- The class to checkintf
- The interface to check it against.
public static Class classForName(String name, Class caller) throws ClassNotFoundException
Class.forName(String, boolean, ClassLoader)
using the caller's classloader
name
- The class namecaller
- The class from which this call originated (in order to access that class's loader).
ClassNotFoundException
- From Class.forName(String, boolean, ClassLoader)
.public static Class classForName(String name) throws ClassNotFoundException
classForName(String, Class)
except that here we delegate to
Class.forName(String)
if the context classloader lookup is unsuccessful.
name
- The class name
ClassNotFoundException
- From Class.forName(String)
.public static boolean isPublic(Member member)
isPublic(Class, Member)
passing the member + Member.getDeclaringClass()
member
- The member to check
public static boolean isPublic(Class clazz, Member member)
clazz
- The class which defines the membermember
- The memeber.
public static Class reflectedPropertyClass(String className, String name) throws MappingException
className
- The name of the class owning the property.name
- The name of the property.
MappingException
- Indicates we were unable to locate the property.public static Getter getGetter(Class theClass, String name) throws MappingException
Getter
reference via the BasicPropertyAccessor
.
theClass
- The class owning the propertyname
- The name of the property
MappingException
- Indicates we were unable to locate the property.public static Object getConstantValue(String name)
name
- The name
public static Constructor getDefaultConstructor(Class clazz) throws PropertyNotFoundException
clazz
- The class for which to retrieve the default ctor.
PropertyNotFoundException
- Indicates there was not publicly accessible, no-arg constructor (todo : why PropertyNotFoundException???)public static boolean isAbstractClass(Class clazz)
clazz
- The class to check.
public static boolean isFinalClass(Class clazz)
clazz
- The class to check.
public static Constructor getConstructor(Class clazz, Type[] types) throws PropertyNotFoundException
types
.
clazz
- The class needing instantiationtypes
- The types representing the required ctor param signature
PropertyNotFoundException
- Indicates we could not locate an appropriate constructor (todo : again with PropertyNotFoundException???)public static Method getMethod(Class clazz, Method method)
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