/* * Copyright (c) 2020, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions.
*/
publicclass MethodHelper { /** * Gets method from a specified class using its name * * @param aClass type method belongs to * @param name the name of the method * @return {@link Method} that represents corresponding class method
*/ publicstatic Method getMethod(Class<?> aClass, String name) {
Method method; try {
method = aClass.getDeclaredMethod(name);
} catch (NoSuchMethodException e) { thrownew Error("TESTBUG: Unable to get method " + name, e);
} return method;
}
/** * Gets {@link Callable} that invokes given method from the given object * * @param object the object the specified method is invoked from * @param name the name of the method
*/ publicstatic Callable<Integer> getCallable(Object object, String name) {
Method method = getMethod(object.getClass(), name); return () -> { try { return Objects.hashCode(method.invoke(object));
} catch (ReflectiveOperationException e) { thrownew Error("TESTBUG: Invocation failure", e);
}
};
}
}
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