org.directwebremoting.datasync.AbstractPerXStoreProvider Maven / Gradle / Ivy

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DWR is easy Ajax for Java. It makes it simple to call Java code directly from Javascript. It gets rid of almost all the boilerplate code between the web browser and your Java code. This version 4.0.2 works with Jakarta Servlet 4.0.2.

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package org.directwebremoting.datasync;

import java.util.List;

import org.directwebremoting.io.Item;
import org.directwebremoting.io.ItemUpdate;
import org.directwebremoting.io.MatchedItems;
import org.directwebremoting.io.RawData;
import org.directwebremoting.io.StoreChangeListener;
import org.directwebremoting.io.StoreRegion;

/**
 * A raw StoreProvider works on a global basis, so all users share the same
 * data. We envisage a number of ways to sub-divide this. For example, one
 * store per HttpSession, one store per ScriptSession, etc. (The PerX versions
 * of the StoreProvider class). This provides an abstract implementation of the
 * PerX behavior.
 * @author Joe Walker [joe at getahead dot ltd dot uk]
 */
public abstract class AbstractPerXStoreProvider implements StoreProvider
{
    /**
     * Internal method to find or create a StoreProvider for a given user.
     * @return ...
     */
    protected abstract StoreProvider getStoreProvider();

    public void put(String itemId, RawData rawData)
    {
        getStoreProvider().put(itemId, rawData);
    }

    public void put(String itemId, T value)
    {
        getStoreProvider().put(itemId, value);
    }

    public void unsubscribe(StoreChangeListener listener)
    {
        getStoreProvider().unsubscribe(listener);
    }

    public void update(List changes)
    {
        getStoreProvider().update(changes);
    }

    public Item viewItem(String itemId)
    {
        return getStoreProvider().viewItem(itemId);
    }

    public Item viewItem(String itemId, StoreChangeListener listener)
    {
        return getStoreProvider().viewItem(itemId, listener);
    }

    public MatchedItems viewRegion(StoreRegion region)
    {
        return getStoreProvider().viewRegion(region);
    }

    public MatchedItems viewRegion(StoreRegion region, StoreChangeListener listener)
    {
        return getStoreProvider().viewRegion(region, listener);
    }
}