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| java.lang.Object
 org.apache.catalina.valves.ValveBase
org.apache.catalina.valves.SemaphoreValve
| SemaphoreValve | | public class SemaphoreValve extends ValveBase implements Lifecycle(Code) | | Implementation of a Valve that limits concurrency.
This Valve may be attached to any Container, depending on the granularity
of the concurrency control you wish to perform.
author:
Remy Maucherat
version:
$Revision: 467222 $ $Date: 2006-10-24 05:17:11 +0200 (mar., 24 oct. 2006) $ |
| block | | protected boolean block(Code) | | Block until a permit is available.
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| concurrency | | protected int concurrency(Code) | | Concurrency level of the semaphore.
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| fairness | | protected boolean fairness(Code) | | Fairness of the semaphore.
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| interruptible | | protected boolean interruptible(Code) | | Block interruptibly until a permit is available.
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| addLifecycleListener | | public void addLifecycleListener(LifecycleListener listener)(Code) | | Add a lifecycle event listener to this component.
Parameters:
listener - The listener to add |
| controlConcurrency | | public boolean controlConcurrency(Request request, Response response)(Code) | | Subclass friendly method to add conditions.
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| findLifecycleListeners | | public LifecycleListener[] findLifecycleListeners()(Code) | | Get the lifecycle listeners associated with this lifecycle. If this
Lifecycle has no listeners registered, a zero-length array is returned.
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| getBlock | | public boolean getBlock()(Code) | | |
| getConcurrency | | public int getConcurrency()(Code) | | |
| getFairness | | public boolean getFairness()(Code) | | |
| getInfo | | public String getInfo()(Code) | | Return descriptive information about this Valve implementation.
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| getInterruptible | | public boolean getInterruptible()(Code) | | |
| invoke | | public void invoke(Request request, Response response) throws IOException, ServletException(Code) | | Do concurrency control on the request using the semaphore.
Parameters:
request - The servlet request to be processed
Parameters:
response - The servlet response to be created
exception:
IOException - if an input/output error occurs
exception:
ServletException - if a servlet error occurs |
| removeLifecycleListener | | public void removeLifecycleListener(LifecycleListener listener)(Code) | | Remove a lifecycle event listener from this component.
Parameters:
listener - The listener to add |
| setBlock | | public void setBlock(boolean block)(Code) | | |
| setConcurrency | | public void setConcurrency(int concurrency)(Code) | | |
| setFairness | | public void setFairness(boolean fairness)(Code) | | |
| setInterruptible | | public void setInterruptible(boolean interruptible)(Code) | | |
| start | | public void start() throws LifecycleException(Code) | | Prepare for the beginning of active use of the public methods of this
component. This method should be called after configure(),
and before any of the public methods of the component are utilized.
exception:
LifecycleException - if this component detects a fatal errorthat prevents this component from being used |
| stop | | public void stop() throws LifecycleException(Code) | | Gracefully terminate the active use of the public methods of this
component. This method should be the last one called on a given
instance of this component.
exception:
LifecycleException - if this component detects a fatal errorthat needs to be reported |
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