org.directwebremoting.datasync.PerScriptSessionStoreProvider Maven / Gradle / Ivy
package org.directwebremoting.datasync;
import org.directwebremoting.ScriptSession;
import org.directwebremoting.WebContextFactory;
/**
* A StoreProvider that allows us to have a number of StoreProviders for each
* {@link ScriptSession}. New {@link StoreProvider}s are created by a
* {@link StoreProviderFactory} and stored in the ScriptSession under a given
* attribute name.
* @author Joe Walker [joe at getahead dot ltd dot uk]
*/
public class PerScriptSessionStoreProvider extends AbstractPerXStoreProvider
{
public PerScriptSessionStoreProvider(StoreProviderFactory factory, String attributeName)
{
this.factory = factory;
this.attributeName = attributeName;
}
/**
* Internal method to find or create a StoreProvider for a given user.
*/
@Override
protected StoreProvider getStoreProvider()
{
ScriptSession session = WebContextFactory.get().getScriptSession();
@SuppressWarnings("unchecked")
StoreProvider storeProvider = (StoreProvider) session.getAttribute(attributeName);
if (storeProvider == null)
{
storeProvider = factory.create(session);
session.setAttribute(attributeName, storeProvider);
}
return storeProvider;
}
/**
* The attribute name that we are storing created StoreProviders under in
* the ScriptSession
*/
private final String attributeName;
/**
* The factory to enable us to create factories per ScriptSession
*/
private final StoreProviderFactory factory;
}
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