org.wildfly.security.manager.GetAccessibleDeclaredFieldAction Maven / Gradle / Ivy
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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including
all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and
JMS BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up
with different versions on classes on the class path).
/*
* JBoss, Home of Professional Open Source.
* Copyright 2016 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.wildfly.security.manager;
import java.lang.reflect.Field;
import java.security.PrivilegedAction;
/**
* A privileged action which gets and returns a non-public field from a class.
*
* @author David M. Lloyd
*/
// note: don't make this public. people should generally use the reflection index for this kind of thing.
final class GetAccessibleDeclaredFieldAction implements PrivilegedAction {
private final Class clazz;
private final String fieldName;
/**
* Construct a new instance.
*
* @param clazz the class to search
* @param fieldName the field name to search for
*/
public GetAccessibleDeclaredFieldAction(final Class clazz, final String fieldName) {
this.clazz = clazz;
this.fieldName = fieldName;
}
public Field run() {
final Field field;
try {
field = clazz.getDeclaredField(fieldName);
} catch (NoSuchFieldException e) {
throw new NoSuchFieldError(e.getMessage());
}
field.setAccessible(true);
return field;
}
}