| gvSIG desktop 1

/* gvSIG. Geographic Information System of the Valencian Government

*

* Copyright (C) 2007-2008 Infrastructures and Transports Department

* of the Valencian Government (CIT)

* 

* This program is free software; you can redistribute it and/or

* modify it under the terms of the GNU General Public License

* as published by the Free Software Foundation; either version 2

* of the License, or (at your option) any later version.

* 

* This program 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.  See the

* GNU General Public License for more details.

* 

* You should have received a copy of the GNU General Public License

* along with this program; if not, write to the Free Software

* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, 

* MA  02110-1301, USA.

* 

*/

/*

* AUTHORS (In addition to CIT):

* 2008 {{Company}}   {{Task}}

*/

package org.gvsig.fmap.data.index;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

import org.gvsig.fmap.data.feature.FeatureStore;

import org.gvsig.fmap.data.feature.FeatureType;

/**

 * This class provides access to a FeatureStore local indexes.

 * This class holds the correspondence between a pair (FeatureType, columName) -> SpatialIndex

 * TODO there is not persistence and works only in memory

 * @author jyarza

 */

public class IndexStore {

	private Map featureTypes = new HashMap(); 

	public IndexStore(FeatureStore store) {

		Iterator it = store.getFeatureTypes().iterator();

		while (it.hasNext()) {

			FeatureType type = (FeatureType) it.next();

			featureTypes.put(type, new HashMap());

		}

	}

	public Index getIndex(FeatureType fType, String colName) {

		Map indexes = (Map) featureTypes.get(fType);

		if (indexes != null) {

			return (Index) (featureTypes.get(fType));

		}

		return null;

	}

	public void addIndex(FeatureType fType, String colName, Index index) {		

		Map indexes = (Map) featureTypes.get(fType);		

		if (indexes == null) {

			// A new feature type has been added to the FeatureStore since this IndexStore was created

			indexes = new HashMap();

			featureTypes.put(fType, indexes);

		}

		indexes.put(colName, index);

	}

	public boolean contains(FeatureType fType, String colName) {

		Map map = (Map) featureTypes.get(fType);

		return map == null ? false : map.containsKey(colName);

	}

}