package org.litesoft.prioritizer.client.boviews;

import java.util.*;

import org.litesoft.GWT.client.context.*;
import org.litesoft.bo.views.*;
import org.litesoft.bo.views.caching.*;
import org.litesoft.bo.views.communication.*;
import org.litesoft.prioritizer.client.support.*;

public class StoryViewDataProvider extends SecurityTypedVoDataProvider<StoryView>
{
    private static StoryViewDataProvider sInstance = null;

    public static synchronized StoryViewDataProvider getInstance()
    {
        return (sInstance != null) ? sInstance : (sInstance = new StoryViewDataProvider());
    }

    private StoryViewDataProvider()
    {
        super( StoryViewMetaData.getInstance() );
    }

    @Override
    public void invalidate( CacheID pCacheID )
    {
    }

    public void requestAllRowsForInitialPrioritizing( FetchRowsDataProviderCallBack<StoryView> pCallBack )
    {
        getCScomm().requestFunctionFetchRows( this, null, //
                                              new VOCSrequestFunctionFetchRows( StoryView.class, //
                                                                                StoryViewAbstractServerFunctionFetchInitialPrioritizeRows.REG_ID, //
                                                                                null ), pCallBack );
    }

    public void requestAllRowsForReprioritizing( FetchRowsDataProviderCallBack<StoryView> pCallBack )
    {
        getCScomm().requestFunctionFetchRows( this, null, //
                                              new VOCSrequestFunctionFetchRows( StoryView.class, //
                                                                                StoryViewAbstractServerFunctionFetchReprioritizeRows.REG_ID, //
                                                                                null ), pCallBack );
    }

    public void reprioritizeToGroup( PriorityGroup pGroup, Set<StoryView> pStoryViews, SimpleDataProviderCallBack pCallBack )
    {
        StoryView[] zStoryViews = StoryView.toArrayPaddedSorted( pStoryViews, 1 );
        zStoryViews[0] = new StoryView( pGroup );
        getCScomm().requestFunctionSimple( new VOCSrequestFunctionSimple( StoryView.class, //
                                                                          StoryViewAbstractServerFunctionReprioritizeToGroup.REG_ID, //
                                                                          zStoryViews ), pCallBack );
    }

    public void reprioritizeBetween( StoryView pLowerBound, StoryView pUpperBound, Set<StoryView> pStoryViews, SimpleDataProviderCallBack pCallBack )
    {
        StoryView[] zStoryViews = StoryView.toArrayPaddedSorted( pStoryViews, 2 );
        zStoryViews[0] = pLowerBound;
        zStoryViews[1] = pUpperBound;
        getCScomm().requestFunctionSimple( new VOCSrequestFunctionSimple( StoryView.class, //
                                                                          StoryViewAbstractServerFunctionReprioritizeBetween.REG_ID, //
                                                                          zStoryViews ), pCallBack );
    }
}