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author | aclement <aclement> | 2006-05-30 09:30:34 +0000 |
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committer | aclement <aclement> | 2006-05-30 09:30:34 +0000 |
commit | 9eb7fa0bc21878bfd2c0251afb4001b5eb55e346 (patch) | |
tree | 88dc9bba595403d55817ab8cb07cffc9e691ec52 /runtime | |
parent | 7235e9d089fa2b12b835cbaab7c253cb1de0b563 (diff) | |
download | aspectj-9eb7fa0bc21878bfd2c0251afb4001b5eb55e346.tar.gz aspectj-9eb7fa0bc21878bfd2c0251afb4001b5eb55e346.zip |
tests and fix for 122253
Diffstat (limited to 'runtime')
-rw-r--r-- | runtime/src/org/aspectj/lang/Aspects14.java | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/runtime/src/org/aspectj/lang/Aspects14.java b/runtime/src/org/aspectj/lang/Aspects14.java new file mode 100644 index 000000000..d2ae3e0f7 --- /dev/null +++ b/runtime/src/org/aspectj/lang/Aspects14.java @@ -0,0 +1,188 @@ +/******************************************************************************* + * Copyright (c) 2006 Contributors. + * All rights reserved. + * This program and the accompanying materials are made available + * under the terms of the Eclipse Public License v1.0 + * which accompanies this distribution and is available at + * http://eclipse.org/legal/epl-v10.html + * + * Contributors: + * variant of Aspects in the aspectj5rt project - this one isn't Java5 - Andy Clement + *******************************************************************************/ +package org.aspectj.lang; + + +import java.lang.reflect.Method; +import java.lang.reflect.Modifier; +import java.lang.reflect.InvocationTargetException; + +/** + * For users working on a level of Java prior to Java5, Aspects14 handles generic aspectOf methods when they + * are not available in the aspects but added later on through load time weaving. Users on Java5 should use + * the class Aspects instead. + * <p/> + * Aspects14.aspectOf(..) is doing reflective calls to the aspect aspectOf, so for better performance + * consider using ajc compilation of the aspects and using them as a binary dependancies in your project. + */ +public class Aspects14 { + + private final static Class[] EMPTY_CLASS_ARRAY = new Class[0]; + private final static Class[] PEROBJECT_CLASS_ARRAY = new Class[]{Object.class}; + private final static Class[] PERTYPEWITHIN_CLASS_ARRAY = new Class[]{Class.class}; + private final static Object[] EMPTY_OBJECT_ARRAY = new Object[0]; + private final static String ASPECTOF = "aspectOf"; + private final static String HASASPECT = "hasAspect"; + + /** + * Returns the singleton aspect or the percflow / percflowbelow associated with the current thread + * + * @param aspectClass + * @return + * @throws NoAspectBoundException if no such aspect + */ + public static Object aspectOf(Class aspectClass) throws NoAspectBoundException { + try { + return getSingletonOrThreadAspectOf(aspectClass).invoke(null, EMPTY_OBJECT_ARRAY); + } catch (InvocationTargetException e) { + //FIXME asc Highly temporary change to see what the build makes of it - dont use 1.4 APIs + throw new NoAspectBoundException(aspectClass.getName(), e);//e.getCause()); + } catch (Exception e) { + throw new NoAspectBoundException(aspectClass.getName(), e); + } + } + + /** + * Returns the perthis / pertarget aspect + * @param aspectClass + * @param perObject + * @return + * @throws NoAspectBoundException if no such aspect, or no aspect bound + */ + public static Object aspectOf(Class aspectClass, Object perObject) throws NoAspectBoundException { + try { + return getPerObjectAspectOf(aspectClass).invoke(null, new Object[]{perObject}); + } catch (InvocationTargetException e) { + //FIXME asc Highly temporary change to see what the build makes of it - dont use 1.4 APIs + throw new NoAspectBoundException(aspectClass.getName(), e);//e.getCause()); + } catch (Exception e) { + throw new NoAspectBoundException(aspectClass.getName(), e); + } + } + + /** + * Returns the pertypewithin aspect + * @param aspectClass + * @param perTypeWithin class + * @return + * @throws NoAspectBoundException if no such aspect, or no aspect bound + */ + public static Object aspectOf(Class aspectClass, Class perTypeWithin) throws NoAspectBoundException { + try { + return getPerTypeWithinAspectOf(aspectClass).invoke(null, new Object[]{perTypeWithin}); + } catch (InvocationTargetException e) { +// FIXME asc Highly temporary change to see what the build makes of it - dont use 1.4 APIs + throw new NoAspectBoundException(aspectClass.getName(), e);//e.getCause()); + } catch (Exception e) { + throw new NoAspectBoundException(aspectClass.getName(), e); + } + } + + /** + * Returns true if singleton aspect or percflow / percflowbelow aspect is bound + * + * @param aspectClass + * @return + * @throws NoAspectBoundException if not bound + */ + public static boolean hasAspect(Class aspectClass) throws NoAspectBoundException { + try { + return ((Boolean)getSingletonOrThreadHasAspect(aspectClass).invoke(null, EMPTY_OBJECT_ARRAY)).booleanValue(); + } catch (Exception e) { + return false; + } + } + + /** + * Returns true if the perthis / pertarget aspect is bound + * @param aspectClass + * @param perObject + * @return + * @throws NoAspectBoundException if not bound + */ + public static boolean hasAspect(Class aspectClass, Object perObject) throws NoAspectBoundException { + try { + return ((Boolean)getPerObjectHasAspect(aspectClass).invoke(null, new Object[]{perObject})).booleanValue(); + } catch (Exception e) { + return false; + } + } + + /** + * Returns true if the pertypewithin aspect is bound + * @param aspectClass + * @param perTypeWithin class + * @return + * @throws NoAspectBoundException if not bound + */ + public static boolean hasAspect(Class aspectClass, Class perTypeWithin) throws NoAspectBoundException { + try { + return ((Boolean)getPerTypeWithinHasAspect(aspectClass).invoke(null, new Object[]{perTypeWithin})).booleanValue(); + } catch (Exception e) { + return false; + } + } + + // -- aspectOf + + private static Method getSingletonOrThreadAspectOf(Class aspectClass) throws NoSuchMethodException { + Method method = aspectClass.getDeclaredMethod(ASPECTOF, EMPTY_CLASS_ARRAY); + return checkAspectOf(method, aspectClass); + } + + private static Method getPerObjectAspectOf(Class aspectClass) throws NoSuchMethodException { + Method method = aspectClass.getDeclaredMethod(ASPECTOF, PEROBJECT_CLASS_ARRAY); + return checkAspectOf(method, aspectClass); + } + + private static Method getPerTypeWithinAspectOf(Class aspectClass) throws NoSuchMethodException { + Method method = aspectClass.getDeclaredMethod(ASPECTOF, PERTYPEWITHIN_CLASS_ARRAY); + return checkAspectOf(method, aspectClass); + } + + private static Method checkAspectOf(Method method, Class aspectClass) throws NoSuchMethodException { + method.setAccessible(true); + if (!method.isAccessible() + || !Modifier.isPublic(method.getModifiers()) + || !Modifier.isStatic(method.getModifiers())) { + throw new NoSuchMethodException(aspectClass.getName() + ".aspectOf(..) is not accessible public static"); + } + return method; + } + + // -- hasAspect + + private static Method getSingletonOrThreadHasAspect(Class aspectClass) throws NoSuchMethodException { + Method method = aspectClass.getDeclaredMethod(HASASPECT, EMPTY_CLASS_ARRAY); + return checkHasAspect(method, aspectClass); + } + + private static Method getPerObjectHasAspect(Class aspectClass) throws NoSuchMethodException { + Method method = aspectClass.getDeclaredMethod(HASASPECT, PEROBJECT_CLASS_ARRAY); + return checkHasAspect(method, aspectClass); + } + + private static Method getPerTypeWithinHasAspect(Class aspectClass) throws NoSuchMethodException { + Method method = aspectClass.getDeclaredMethod(HASASPECT, PERTYPEWITHIN_CLASS_ARRAY); + return checkHasAspect(method, aspectClass); + } + + private static Method checkHasAspect(Method method, Class aspectClass) throws NoSuchMethodException { + method.setAccessible(true); + if (!method.isAccessible() + || !Modifier.isPublic(method.getModifiers()) + || !Modifier.isStatic(method.getModifiers())) { + throw new NoSuchMethodException(aspectClass.getName() + ".hasAspect(..) is not accessible public static"); + } + return method; + } +} |