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package com.sun.enterprise.security.jacc.provider;
import javax.security.jacc.PolicyConfiguration;
import javax.security.jacc.PolicyConfigurationFactory;
/**
* Abstract factory and finder class for obtaining
* the instance of the class that implements the PolicyConfigurationFactory
* of a provider. The factory will be used to instantiate PolicyConfiguration
* objects that will be used by the deployment tools of the container
* to create and manage policy contexts within the Policy Provider.
*
* Implementation classes must have a public no argument constructor that
* may be used to create an operational instance of the factory implementation
* class.
*
* @see javax.security.jacc.PolicyConfiguration
* @see javax.security.jacc.PolicyContextException
*
* @author monzillo
*/
public class SimplePolicyConfigurationFactory extends PolicyConfigurationFactory {
/** Creates a new instance of SimplePolicyConfigurationFactory */
public SimplePolicyConfigurationFactory() {
}
/**
* This method is used to obtain an instance of the provider specific
* class that implements the PolicyConfiguration interface that
* corresponds to the identified policy context within the provider.
* The methods of the PolicyConfiguration interface are used to
* define the policy statements of the identified policy context.
*
* If at the time of the call, the identified policy context does not
* exist in the provider, then the policy context will be created
* in the provider and the Object that implements the context's
* PolicyConfiguration Interface will be returned. If the state of the
* identified context is "deleted" or "inService" it will be transitioned to
* the "open" state as a result of the call. The states in the lifecycle
* of a policy context are defined by the PolicyConfiguration interface.
*
* For a given value of policy context identifier, this method
* must always return the same instance of PolicyConfiguration
* and there must be at most one actual instance of a
* PolicyConfiguration with a given policy context identifier
* (during a process context).
*
* To preserve the invariant that there be at most one
* PolicyConfiguration object for a given policy context,
* it may be necessary for this method to be thread safe.
*
* @param contextID A String identifying the policy context whose
* PolicyConfiguration interface is to be returned. The value passed to
* this parameter must not be null.
*
* @param remove A boolean value that establishes whether or not the
* policy statements of an existing policy context are to be
* removed before its PolicyConfiguration object is returned. If the value
* passed to this parameter is true, the policy statements of
* an existing policy context will be removed. If the value is false,
* they will not be removed.
*
* @return an Object that implements the PolicyConfiguration
* Interface matched to the Policy provider and corresponding to the
* identified policy context.
*
* @throws java.lang.SecurityException
* when called by an AccessControlContext that has not been
* granted the "setPolicy" SecurityPermission.
*
* @throws javax.security.jacc.PolicyContextException
* if the implementation throws a checked exception that has not been
* accounted for by the getPolicyConfiguration method signature.
* The exception thrown
* by the implementation class will be encapsulated (during construction)
* in the thrown PolicyContextException.
*/
public PolicyConfiguration getPolicyConfiguration(String contextID, boolean remove)
throws javax.security.jacc.PolicyContextException {
return SimplePolicyConfiguration.getPolicyConfig(contextID, remove);
}
/**
* This method determines if the identified policy context
* exists with state "inService" in the Policy provider
* associated with the factory.
*
* @param contextID A string identifying a policy context
*
* @return true if the identified policy context exists within the
* provider and its state is "inService", false otherwise.
*
* @throws java.lang.SecurityException
* when called by an AccessControlContext that has not been
* granted the "setPolicy" SecurityPermission.
*
* @throws javax.security.jacc.PolicyContextException
* if the implementation throws a checked exception that has not been
* accounted for by the inService method signature. The exception thrown
* by the implementation class will be encapsulated (during construction)
* in the thrown PolicyContextException.
*/
public boolean inService(String contextID)
throws javax.security.jacc.PolicyContextException {
return SimplePolicyConfiguration.inService(contextID);
}
}