GenerateDummyDataOperation.java

/*****************************************************************************
 *  Limpet - the Lightweight InforMation ProcEssing Toolkit
 *  http://limpet.info
 *
 *  (C) 2015-2016, Deep Blue C Technologies Ltd
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the Eclipse Public License v1.0
 *  (http://www.eclipse.org/legal/epl-v10.html)
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *****************************************************************************/
package info.limpet.data.operations;

import info.limpet.ICommand;
import info.limpet.IContext;
import info.limpet.IOperation;
import info.limpet.IStore;
import info.limpet.IStoreItem;
import info.limpet.data.commands.AbstractCommand;
import info.limpet.data.impl.samples.SampleData;
import info.limpet.data.store.StoreGroup;

import java.util.ArrayList;
import java.util.Collection;
import java.util.Iterator;
import java.util.List;

public class GenerateDummyDataOperation implements IOperation<IStoreItem>
{
	private final CollectionComplianceTests aTests = new CollectionComplianceTests();

	private final String _title;

	private final long _count;

	public GenerateDummyDataOperation(String title, long count)
	{
		_title = title;
		_count = count;
	}

	public Collection<ICommand<IStoreItem>> actionsFor(
			List<IStoreItem> selection, IStore destination, IContext context)
	{
		Collection<ICommand<IStoreItem>> res = new ArrayList<ICommand<IStoreItem>>();
		if (appliesTo(selection))
		{
			String thisTitle = "Generate " + _title + " dataset (" + _count + ")";
			ICommand<IStoreItem> newC = new GenerateDummyDataCommand(thisTitle,
					destination, _count, context);
			res.add(newC);
		}

		return res;
	}

	private boolean appliesTo(List<IStoreItem> selection)
	{
		boolean emptySelection = aTests.exactNumber(selection, 0);
		return emptySelection;
	}

	public static class GenerateDummyDataCommand extends
			AbstractCommand<IStoreItem>
	{
		private final long _count;

		public GenerateDummyDataCommand(String title, IStore store, long count,
				IContext context)
		{
			super(title, "Create some sample data", store, false, false, null, context);
			_count = count;
		}

		@Override
		public void execute()
		{
			StoreGroup newData = new SampleData().getData(_count);
			Iterator<IStoreItem> iter = newData.iterator();
			while (iter.hasNext())
			{
				IStoreItem iCollection = iter.next();
				getStore().add(iCollection);

			}
		}

		@Override
		protected String getOutputName()
		{
			// don't bother, not used
			return null;
		}

		@Override
		protected void recalculate(IStoreItem subject)
		{
			// don't worry
		}

	}

}