Java Doc for SecurityUtils.java in  » Apache-Harmony-Java-SE » org-package » org » apache » harmony » security » fortress » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Apache Harmony Java SE » org package » org.apache.harmony.security.fortress 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.harmony.security.fortress.SecurityUtils

SecurityUtils
final public class SecurityUtils (Code)
The class is used to perform an exchange of information between java.lang.Thread and java.security.AccessController.
The data to excnahge is inherited contexts for the Thread-s.




Method Summary
public static  AccessControlContextgetContext(Thread thread)
     Returns the AccessControlContext stored for a given thread.
The method may return null - for the very first thread created by the VM which does not have inherited context.
It may also return null if no Thread found in the map - that seems possible during VM startup process.
public static  voidputContext(Thread thread, AccessControlContext context)
     This method to be invoked in the Thread's constructor.



Method Detail
getContext
public static AccessControlContext getContext(Thread thread) throws SecurityException(Code)
Returns the AccessControlContext stored for a given thread.
The method may return null - for the very first thread created by the VM which does not have inherited context.
It may also return null if no Thread found in the map - that seems possible during VM startup process.



putContext
public static void putContext(Thread thread, AccessControlContext context) throws SecurityException(Code)
This method to be invoked in the Thread's constructor. The first argument (thread) must be Thread's this and the second must be a snapshot of the current AccessControlContext:

Thread() {
SecurityUtils.putContext(this,AccessController.getContext());
...do the stuff you need...
}
The method throws SecurityException if the method is called more than once for a given thread. The first call to putContext is always performed in the Thread's constructor so this effectively means that no one can replace the snapshot taken.
throws:
  SecurityException - if a context for the passed thread already exists in the map.
throws:
  NullPointerException - if thread is null
throws:
  Error - if context is null AND if null context is already stored in the map




Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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