Menu
▾
▴
[Hibernate-commits] Hibernate/cirrus/hibernate/helpers ReflectHelper.java,1.32,1.33
|
From: <one...@us...> - 2002-11-09 01:38:10
|
Update of /cvsroot/hibernate/Hibernate/cirrus/hibernate/helpers
In directory usw-pr-cvs1:/tmp/cvs-serv6168/hibernate/helpers
Modified Files:
ReflectHelper.java
Log Message:
committed Jon Lipsky's patch to allow components with private constructors
Index: ReflectHelper.java
===================================================================
RCS file: /cvsroot/hibernate/Hibernate/cirrus/hibernate/helpers/ReflectHelper.java,v
retrieving revision 1.32
retrieving revision 1.33
diff -C2 -d -r1.32 -r1.33
*** ReflectHelper.java 28 Oct 2002 19:27:47 -0000 1.32
--- ReflectHelper.java 9 Nov 2002 01:38:05 -0000 1.33
***************
*** 1,227 ****
! //$Id$
! package cirrus.hibernate.helpers;
!
! import java.beans.*;
! import java.lang.reflect.InvocationTargetException;
! import java.lang.reflect.Member;
! import java.lang.reflect.Method;
! import java.lang.reflect.Modifier;
!
! import cirrus.hibernate.*;
! import cirrus.hibernate.MappingException;
! import cirrus.hibernate.type.*;
! import cirrus.hibernate.type.Type;
!
!
! public final class ReflectHelper {
!
! private static final Class[] OBJECT = new Class[] { Object.class };
! private static final Method OBJECT_EQUALS;
! static {
! Method eq;
! try {
! eq = Object.class.getMethod("equals", OBJECT);
! }
! catch (Exception e) {
! throw new AssertionFailure("Could not find Object.equals()", e);
! }
! OBJECT_EQUALS = eq;
! }
!
! public static boolean overridesEquals(Class clazz) {
! Method equals;
! try {
! equals = clazz.getMethod("equals", OBJECT);
! }
! catch (NoSuchMethodException nsme) {
! return false; //its an interface so we can't really tell anything...
! }
! return !OBJECT_EQUALS.equals(equals);
! }
!
!
! public static Method getMethod(Class theClass, String methodName) throws MappingException {
!
! if (theClass==Object.class || theClass==null) throw new MappingException( "Could not find a setter" ); // will be swallowed
!
! Method result;
! try {
! result = theClass.getDeclaredMethod(methodName, null);
! }
! catch (Exception e) {
! try {
! return getMethod( theClass.getSuperclass(), methodName );
! }
! catch (MappingException me) {
! throw new MappingException( "Could not find method " + methodName + " in class " + theClass.getName() );
! }
! }
!
! if ( !ReflectHelper.isPublic(theClass, result) ) result.setAccessible(true);
! return result;
!
! }
!
! public static Method getSetterMethod(Class theClass, String propertyName) throws MappingException {
!
! if (theClass==Object.class || theClass==null) throw new MappingException( "Could not find a setter" ); // will be swallowed
!
! Method result = setter(theClass, propertyName);
!
! if(result==null) {
! try {
! return getSetterMethod( theClass.getSuperclass(), propertyName );
! }
! catch (MappingException me) {
! throw new MappingException( "Could not find a setter for " + propertyName + " in class " + theClass.getName() );
! }
! }
! else {
! if ( !ReflectHelper.isPublic(theClass, result) ) result.setAccessible(true);
! return result;
! }
!
! }
!
! private static Method setter(Class theClass, String propertyName) {
!
! Method[] methods = theClass.getDeclaredMethods();
! for (int i=0; i<methods.length; i++) {
! if(
! ( methods[i].getName().length() > 3 ) &&
! ( methods[i].getName().startsWith("set") )
! ) {
! String testStdMethod = Introspector.decapitalize( methods[i].getName().substring(3) );
! String testOldMethod = methods[i].getName().substring(3);
! if (
! ( testStdMethod.equals(propertyName) || testOldMethod.equals(propertyName) ) &&
! ( methods[i].getParameterTypes().length==1 )
! ) return methods[i];
! }
! }
! return null;
! }
!
! public static Method getGetterMethod(Class theClass, String propertyName) throws MappingException {
!
! if (theClass==Object.class || theClass==null) throw new MappingException( "Could not find a getter" ); // will be swallowed
!
! Method result = getter(theClass, propertyName);
!
! if(result==null) {
! try {
! return getGetterMethod( theClass.getSuperclass(), propertyName );
! }
! catch (MappingException me) {
! throw new MappingException( "Could not find a getter for " + propertyName + " in class " + theClass.getName() );
! }
! }
! else {
! if ( !ReflectHelper.isPublic(theClass, result) ) result.setAccessible(true);
! return result;
! }
! }
!
! private static Method getter(Class theClass, String propertyName) {
!
! Method[] methods = theClass.getDeclaredMethods();
! for (int i=0; i<methods.length; i++) {
! // only carry on if the method has no parameters
! if(methods[i].getParameterTypes().length==0) {
!
! // try "get"
! if( (methods[i].getName().length() > 3) && methods[i].getName().startsWith("get") ) {
!
! String testStdMethod = Introspector.decapitalize( methods[i].getName().substring(3) );
! String testOldMethod = methods[i].getName().substring(3);
! if(
! ( testStdMethod.equals(propertyName) || testOldMethod.equals(propertyName) ) &&
! methods[i].getParameterTypes().length==0
! ) return methods[i];
!
! }
!
! // if not "get" then try "is"
! if( (methods[i].getName().length() > 2) && methods[i].getName().startsWith("is") ) {
!
! String testStdMethod = Introspector.decapitalize( methods[i].getName().substring(2) );
! String testOldMethod = methods[i].getName().substring(2);
! if(
! ( testStdMethod.equals(propertyName) || testOldMethod.equals(propertyName) ) &&
! methods[i].getParameterTypes().length==0
! ) return methods[i];
! }
! }
! }
! return null;
! }
!
! public static Type reflectedPropertyType(Class theClass, String name) throws MappingException {
! return TypeFactory.hueristicType( getGetterMethod(theClass, name).getReturnType().getName() );
! }
!
! public static Class classForName(String name) throws ClassNotFoundException {
! try {
! return Thread.currentThread().getContextClassLoader().loadClass(name);
! }
! catch (Exception e) {
! return Class.forName(name);
! }
! }
!
! public static void set(Method method, Object target, Object value, Class clazz, String propertyName) throws HibernateException {
! try {
! method.invoke( target, new Object[] { value } );
! }
! catch (NullPointerException npe) {
! throw new PropertyAccessException(npe, "NullPointerException occurred inside", true, clazz, propertyName);
! }
! catch (InvocationTargetException ite) {
! throw new PropertyAccessException(ite, "Exception occurred inside", true, clazz, propertyName);
! }
! catch (IllegalAccessException iae) {
! throw new PropertyAccessException(iae, "IllegalAccessException occurred while calling", true, clazz, propertyName);
! //cannot occur
! }
! catch (IllegalArgumentException iae) {
! throw new PropertyAccessException(iae, "IllegalArgumentException occurred while calling", true, clazz, propertyName);
! }
! }
!
! public static Object get(Method method, Object target, Class clazz, String propertyName) throws HibernateException {
! try {
! return method.invoke(target, null);
! }
! catch (InvocationTargetException ite) {
! throw new PropertyAccessException(ite, "Exception occurred inside", false, clazz, propertyName);
! }
! catch (IllegalAccessException iae) {
! throw new PropertyAccessException(iae, "IllegalAccessException occurred while calling", false, clazz, propertyName);
! //cannot occur
! }
! catch (IllegalArgumentException iae) {
! throw new PropertyAccessException(iae, "IllegalArgumentException occurred calling", false, clazz, propertyName);
! }
! }
!
! public static boolean isPublic(Class clazz, Member member) {
! return Modifier.isPublic( member.getModifiers() ) && Modifier.isPublic( clazz.getModifiers() );
! }
!
! public static Object getConstantValue(String name) {
! Class clazz;
! try {
! clazz = classForName( StringHelper.qualifier(name) );
! }
! catch(ClassNotFoundException cnfe) {
! return null;
! }
! try {
! return clazz.getField( StringHelper.unqualify(name) ).get(null);
! }
! catch (Exception e) {
! return null;
! }
! }
!
! }
--- 1,254 ----
! //$Id$
! package cirrus.hibernate.helpers;
!
! import java.beans.*;
! import java.lang.reflect.Constructor;
! import java.lang.reflect.InvocationTargetException;
! import java.lang.reflect.Member;
! import java.lang.reflect.Method;
! import java.lang.reflect.Modifier;
!
! import cirrus.hibernate.*;
! import cirrus.hibernate.MappingException;
! import cirrus.hibernate.type.*;
! import cirrus.hibernate.type.Type;
!
!
! public final class ReflectHelper {
!
! private static final Class[] NO_CLASSES = new Class[0];
! private static final Class[] OBJECT = new Class[] { Object.class };
! private static final Method OBJECT_EQUALS;
!
! static {
! Method eq;
! try {
! eq = Object.class.getMethod("equals", OBJECT);
! }
! catch (Exception e) {
! throw new AssertionFailure("Could not find Object.equals()", e);
! }
! OBJECT_EQUALS = eq;
! }
!
! public static boolean overridesEquals(Class clazz) {
! Method equals;
! try {
! equals = clazz.getMethod("equals", OBJECT);
! }
! catch (NoSuchMethodException nsme) {
! return false; //its an interface so we can't really tell anything...
! }
! return !OBJECT_EQUALS.equals(equals);
! }
!
!
! public static Method getMethod(Class theClass, String methodName) throws MappingException {
!
! if (theClass==Object.class || theClass==null) throw new MappingException( "Could not find a setter" ); // will be swallowed
!
! Method result;
! try {
! result = theClass.getDeclaredMethod(methodName, null);
! }
! catch (Exception e) {
! try {
! return getMethod( theClass.getSuperclass(), methodName );
! }
! catch (MappingException me) {
! throw new MappingException( "Could not find method " + methodName + " in class " + theClass.getName() );
! }
! }
!
! if ( !ReflectHelper.isPublic(theClass, result) ) result.setAccessible(true);
! return result;
!
! }
!
! public static Method getSetterMethod(Class theClass, String propertyName) throws MappingException {
!
! if (theClass==Object.class || theClass==null) throw new MappingException( "Could not find a setter" ); // will be swallowed
!
! Method result = setter(theClass, propertyName);
!
! if(result==null) {
! try {
! return getSetterMethod( theClass.getSuperclass(), propertyName );
! }
! catch (MappingException me) {
! throw new MappingException( "Could not find a setter for " + propertyName + " in class " + theClass.getName() );
! }
! }
! else {
! if ( !ReflectHelper.isPublic(theClass, result) ) result.setAccessible(true);
! return result;
! }
!
! }
!
! private static Method setter(Class theClass, String propertyName) {
!
! Method[] methods = theClass.getDeclaredMethods();
! for (int i=0; i<methods.length; i++) {
! if(
! ( methods[i].getName().length() > 3 ) &&
! ( methods[i].getName().startsWith("set") )
! ) {
! String testStdMethod = Introspector.decapitalize( methods[i].getName().substring(3) );
! String testOldMethod = methods[i].getName().substring(3);
! if (
! ( testStdMethod.equals(propertyName) || testOldMethod.equals(propertyName) ) &&
! ( methods[i].getParameterTypes().length==1 )
! ) return methods[i];
! }
! }
! return null;
! }
!
! public static Method getGetterMethod(Class theClass, String propertyName) throws MappingException {
!
! if (theClass==Object.class || theClass==null) throw new MappingException( "Could not find a getter" ); // will be swallowed
!
! Method result = getter(theClass, propertyName);
!
! if(result==null) {
! try {
! return getGetterMethod( theClass.getSuperclass(), propertyName );
! }
! catch (MappingException me) {
! throw new MappingException( "Could not find a getter for " + propertyName + " in class " + theClass.getName() );
! }
! }
! else {
! if ( !ReflectHelper.isPublic(theClass, result) ) result.setAccessible(true);
! return result;
! }
! }
!
! private static Method getter(Class theClass, String propertyName) {
!
! Method[] methods = theClass.getDeclaredMethods();
! for (int i=0; i<methods.length; i++) {
! // only carry on if the method has no parameters
! if(methods[i].getParameterTypes().length==0) {
!
! // try "get"
! if( (methods[i].getName().length() > 3) && methods[i].getName().startsWith("get") ) {
!
! String testStdMethod = Introspector.decapitalize( methods[i].getName().substring(3) );
! String testOldMethod = methods[i].getName().substring(3);
! if(
! ( testStdMethod.equals(propertyName) || testOldMethod.equals(propertyName) ) &&
! methods[i].getParameterTypes().length==0
! ) return methods[i];
!
! }
!
! // if not "get" then try "is"
! if( (methods[i].getName().length() > 2) && methods[i].getName().startsWith("is") ) {
!
! String testStdMethod = Introspector.decapitalize( methods[i].getName().substring(2) );
! String testOldMethod = methods[i].getName().substring(2);
! if(
! ( testStdMethod.equals(propertyName) || testOldMethod.equals(propertyName) ) &&
! methods[i].getParameterTypes().length==0
! ) return methods[i];
! }
! }
! }
! return null;
! }
!
! public static Type reflectedPropertyType(Class theClass, String name) throws MappingException {
! return TypeFactory.hueristicType( getGetterMethod(theClass, name).getReturnType().getName() );
! }
!
! public static Class classForName(String name) throws ClassNotFoundException {
! try {
! return Thread.currentThread().getContextClassLoader().loadClass(name);
! }
! catch (Exception e) {
! return Class.forName(name);
! }
! }
!
! public static void set(Method method, Object target, Object value, Class clazz, String propertyName) throws HibernateException {
! try {
! method.invoke( target, new Object[] { value } );
! }
! catch (NullPointerException npe) {
! throw new PropertyAccessException(npe, "NullPointerException occurred inside", true, clazz, propertyName);
! }
! catch (InvocationTargetException ite) {
! throw new PropertyAccessException(ite, "Exception occurred inside", true, clazz, propertyName);
! }
! catch (IllegalAccessException iae) {
! throw new PropertyAccessException(iae, "IllegalAccessException occurred while calling", true, clazz, propertyName);
! //cannot occur
! }
! catch (IllegalArgumentException iae) {
! throw new PropertyAccessException(iae, "IllegalArgumentException occurred while calling", true, clazz, propertyName);
! }
! }
!
! public static Object get(Method method, Object target, Class clazz, String propertyName) throws HibernateException {
! try {
! return method.invoke(target, null);
! }
! catch (InvocationTargetException ite) {
! throw new PropertyAccessException(ite, "Exception occurred inside", false, clazz, propertyName);
! }
! catch (IllegalAccessException iae) {
! throw new PropertyAccessException(iae, "IllegalAccessException occurred while calling", false, clazz, propertyName);
! //cannot occur
! }
! catch (IllegalArgumentException iae) {
! throw new PropertyAccessException(iae, "IllegalArgumentException occurred calling", false, clazz, propertyName);
! }
! }
!
! public static boolean isPublic(Class clazz, Member member) {
! return Modifier.isPublic( member.getModifiers() ) && Modifier.isPublic( clazz.getModifiers() );
! }
!
! public static Object getConstantValue(String name) {
! Class clazz;
! try {
! clazz = classForName( StringHelper.qualifier(name) );
! }
! catch(ClassNotFoundException cnfe) {
! return null;
! }
! try {
! return clazz.getField( StringHelper.unqualify(name) ).get(null);
! }
! catch (Exception e) {
! return null;
! }
! }
!
! public static Constructor getDefaultConstructor(Class clazz) throws MappingException {
!
! if (isAbstractClass(clazz)) return null;
!
! try {
! Constructor constructor = clazz.getDeclaredConstructor(NO_CLASSES);
! if (!isPublic(clazz, constructor)) {
! constructor.setAccessible(true);
! }
! return constructor;
! } catch (NoSuchMethodException nme) {
! throw new MappingException(
! "Object class " + clazz.getName() +
! " must declare a default (no-argument) constructor"
! );
! }
!
! }
!
! public static boolean isAbstractClass(Class clazz) {
! int modifier = clazz.getModifiers();
! return (Modifier.isAbstract(modifier) || Modifier.isInterface(modifier));
! }
!
! }
|
