fix circular dependency between ReflectHelpers and remove all dependencies.
git-svn-id: https://svn.jboss.org/repos/hibernate/core/trunk@16438 1b8cb986-b30d-0410-93ca-fae66ebed9b2
This commit is contained in:
Emmanuel Bernard
parent
96e77b4b54
commit
29731cbf94
|
|
@ -23,8 +23,12 @@
|
|||
*/
|
||||
package org.hibernate.annotations.common.util;
|
||||
|
||||
import java.lang.reflect.Method;
|
||||
import java.lang.reflect.Member;
|
||||
import java.lang.reflect.Method;
|
||||
import java.lang.reflect.Modifier;
|
||||
|
||||
import org.hibernate.AssertionFailure;
|
||||
import org.hibernate.util.StringHelper;
|
||||
|
||||
/**
|
||||
* Complete duplication of {@link org.hibernate.util.ReflectHelper}.
|
||||
|
|
@ -32,47 +36,198 @@ import java.lang.reflect.Member;
|
|||
* @author Emmanuel Bernard
|
||||
*/
|
||||
public final class ReflectHelper {
|
||||
public static boolean overridesEquals(Class clazz) {
|
||||
return org.hibernate.util.ReflectHelper.overridesEquals( clazz );
|
||||
}
|
||||
|
||||
public static boolean overridesHashCode(Class clazz) {
|
||||
return org.hibernate.util.ReflectHelper.overridesHashCode( clazz );
|
||||
}
|
||||
public static final Class[] NO_PARAM_SIGNATURE = new Class[0];
|
||||
public static final Object[] NO_PARAMS = new Object[0];
|
||||
|
||||
public static Class classForName(String name) throws ClassNotFoundException {
|
||||
return ReflectHelper.classForName( name );
|
||||
}
|
||||
public static final Class[] SINGLE_OBJECT_PARAM_SIGNATURE = new Class[] { Object.class };
|
||||
|
||||
public static Class classForName(String name, Class caller) throws ClassNotFoundException {
|
||||
return org.hibernate.util.ReflectHelper.classForName( name, caller );
|
||||
}
|
||||
private static final Method OBJECT_EQUALS;
|
||||
private static final Method OBJECT_HASHCODE;
|
||||
|
||||
public static boolean isPublic(Class clazz, Member member) {
|
||||
return org.hibernate.util.ReflectHelper.isPublic( clazz, member );
|
||||
}
|
||||
|
||||
public static Object getConstantValue(String name) {
|
||||
return org.hibernate.util.ReflectHelper.getConstantValue( name );
|
||||
}
|
||||
|
||||
public static boolean isAbstractClass(Class clazz) {
|
||||
return org.hibernate.util.ReflectHelper.isAbstractClass( clazz );
|
||||
}
|
||||
|
||||
public static boolean isFinalClass(Class clazz) {
|
||||
return org.hibernate.util.ReflectHelper.isFinalClass( clazz );
|
||||
}
|
||||
|
||||
public static Method getMethod(Class clazz, Method method) {
|
||||
return org.hibernate.util.ReflectHelper.getMethod( clazz, method );
|
||||
static {
|
||||
Method eq;
|
||||
Method hash;
|
||||
try {
|
||||
eq = extractEqualsMethod( Object.class );
|
||||
hash = extractHashCodeMethod( Object.class );
|
||||
}
|
||||
catch ( Exception e ) {
|
||||
throw new AssertionFailure( "Could not find Object.equals() or Object.hashCode()", e );
|
||||
}
|
||||
OBJECT_EQUALS = eq;
|
||||
OBJECT_HASHCODE = hash;
|
||||
}
|
||||
|
||||
/**
|
||||
* Direct instantiation of ReflectHelper disallowed.
|
||||
* Disallow instantiation of ReflectHelper.
|
||||
*/
|
||||
private ReflectHelper() {
|
||||
}
|
||||
|
||||
/**
|
||||
* Encapsulation of getting hold of a class's {@link Object#equals equals} method.
|
||||
*
|
||||
* @param clazz The class from which to extract the equals method.
|
||||
* @return The equals method reference
|
||||
* @throws NoSuchMethodException Should indicate an attempt to extract equals method from interface.
|
||||
*/
|
||||
public static Method extractEqualsMethod(Class clazz) throws NoSuchMethodException {
|
||||
return clazz.getMethod( "equals", SINGLE_OBJECT_PARAM_SIGNATURE );
|
||||
}
|
||||
|
||||
/**
|
||||
* Encapsulation of getting hold of a class's {@link Object#hashCode hashCode} method.
|
||||
*
|
||||
* @param clazz The class from which to extract the hashCode method.
|
||||
* @return The hashCode method reference
|
||||
* @throws NoSuchMethodException Should indicate an attempt to extract hashCode method from interface.
|
||||
*/
|
||||
public static Method extractHashCodeMethod(Class clazz) throws NoSuchMethodException {
|
||||
return clazz.getMethod( "hashCode", NO_PARAM_SIGNATURE );
|
||||
}
|
||||
|
||||
/**
|
||||
* Determine if the given class defines an {@link Object#equals} override.
|
||||
*
|
||||
* @param clazz The class to check
|
||||
* @return True if clazz defines an equals override.
|
||||
*/
|
||||
public static boolean overridesEquals(Class clazz) {
|
||||
Method equals;
|
||||
try {
|
||||
equals = extractEqualsMethod( clazz );
|
||||
}
|
||||
catch ( NoSuchMethodException nsme ) {
|
||||
return false; //its an interface so we can't really tell anything...
|
||||
}
|
||||
return !OBJECT_EQUALS.equals( equals );
|
||||
}
|
||||
|
||||
/**
|
||||
* Determine if the given class defines a {@link Object#hashCode} override.
|
||||
*
|
||||
* @param clazz The class to check
|
||||
* @return True if clazz defines an hashCode override.
|
||||
*/
|
||||
public static boolean overridesHashCode(Class clazz) {
|
||||
Method hashCode;
|
||||
try {
|
||||
hashCode = extractHashCodeMethod( clazz );
|
||||
}
|
||||
catch ( NoSuchMethodException nsme ) {
|
||||
return false; //its an interface so we can't really tell anything...
|
||||
}
|
||||
return !OBJECT_HASHCODE.equals( hashCode );
|
||||
}
|
||||
|
||||
/**
|
||||
* Perform resolution of a class name.
|
||||
* <p/>
|
||||
* Here we first check the context classloader, if one, before delegating to
|
||||
* {@link Class#forName(String, boolean, ClassLoader)} using the caller's classloader
|
||||
*
|
||||
* @param name The class name
|
||||
* @param caller The class from which this call originated (in order to access that class's loader).
|
||||
* @return The class reference.
|
||||
* @throws ClassNotFoundException From {@link Class#forName(String, boolean, ClassLoader)}.
|
||||
*/
|
||||
public static Class classForName(String name, Class caller) throws ClassNotFoundException {
|
||||
try {
|
||||
ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
|
||||
if ( contextClassLoader != null ) {
|
||||
return contextClassLoader.loadClass( name );
|
||||
}
|
||||
}
|
||||
catch ( Throwable ignore ) {
|
||||
}
|
||||
return Class.forName( name, true, caller.getClassLoader() );
|
||||
}
|
||||
|
||||
/**
|
||||
* Perform resolution of a class name.
|
||||
* <p/>
|
||||
* Same as {@link #classForName(String, Class)} except that here we delegate to
|
||||
* {@link Class#forName(String)} if the context classloader lookup is unsuccessful.
|
||||
*
|
||||
* @param name The class name
|
||||
* @return The class reference.
|
||||
* @throws ClassNotFoundException From {@link Class#forName(String)}.
|
||||
*/
|
||||
public static Class classForName(String name) throws ClassNotFoundException {
|
||||
try {
|
||||
ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
|
||||
if ( contextClassLoader != null ) {
|
||||
return contextClassLoader.loadClass(name);
|
||||
}
|
||||
}
|
||||
catch ( Throwable ignore ) {
|
||||
}
|
||||
return Class.forName( name );
|
||||
}
|
||||
|
||||
/**
|
||||
* Is this member publicly accessible.
|
||||
*
|
||||
* @param clazz The class which defines the member
|
||||
* @param member The memeber.
|
||||
* @return True if the member is publicly accessible, false otherwise.
|
||||
*/
|
||||
public static boolean isPublic(Class clazz, Member member) {
|
||||
return Modifier.isPublic( member.getModifiers() ) && Modifier.isPublic( clazz.getModifiers() );
|
||||
}
|
||||
|
||||
/**
|
||||
* Resolve a constant to its actual value.
|
||||
*
|
||||
* @param name The name
|
||||
* @return The value
|
||||
*/
|
||||
public static Object getConstantValue(String name) {
|
||||
Class clazz;
|
||||
try {
|
||||
clazz = classForName( org.hibernate.util.StringHelper.qualifier( name ) );
|
||||
}
|
||||
catch ( Throwable t ) {
|
||||
return null;
|
||||
}
|
||||
try {
|
||||
return clazz.getField( StringHelper.unqualify( name ) ).get( null );
|
||||
}
|
||||
catch ( Throwable t ) {
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Determine if the given class is declared abstract.
|
||||
*
|
||||
* @param clazz The class to check.
|
||||
* @return True if the class is abstract, false otherwise.
|
||||
*/
|
||||
public static boolean isAbstractClass(Class clazz) {
|
||||
int modifier = clazz.getModifiers();
|
||||
return Modifier.isAbstract(modifier) || Modifier.isInterface(modifier);
|
||||
}
|
||||
|
||||
/**
|
||||
* Determine is the given class is declared final.
|
||||
*
|
||||
* @param clazz The class to check.
|
||||
* @return True if the class is final, flase otherwise.
|
||||
*/
|
||||
public static boolean isFinalClass(Class clazz) {
|
||||
return Modifier.isFinal( clazz.getModifiers() );
|
||||
}
|
||||
|
||||
public static Method getMethod(Class clazz, Method method) {
|
||||
try {
|
||||
return clazz.getMethod( method.getName(), method.getParameterTypes() );
|
||||
}
|
||||
catch (Exception e) {
|
||||
return null;
|
||||
}
|
||||
}
|
||||
|
||||
}
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue