/* 
 * Copyright 2003,2004,2005 Colin Crist
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 */

package hermes.swing;

import hermes.util.TextUtils;

import javax.swing.table.TableModel;

import org.apache.log4j.Logger;

import com.codestreet.selector.ISelector;
import com.codestreet.selector.Selector;
import com.codestreet.selector.parser.IIdentifierExtension;
import com.codestreet.selector.parser.IValueProvider;
import com.codestreet.selector.parser.InvalidSelectorException;
import com.codestreet.selector.parser.Result;
import com.jidesoft.grid.AbstractTableFilter;
import com.jidesoft.grid.Filter;
import com.jidesoft.grid.FilterableTableModel;

/**
 * A JIDE FilterableTableModel that uses <link
 * href="http://jamsel.sourceforge.net/">JAMSEL</link> to give SQL92 filters on
 * the table content. An implementation of RowValueProvider must be given that
 * can pull out values from the table row for property names in the SQL.
 * 
 * @author colincrist@hermesjms.com
 * @version $Id: SQL92FilterableTableModel.java,v 1.3 2006/05/26 10:08:21
 *          colincrist Exp $
 */

public class SQL92FilterableTableModel extends FilterableTableModel {
	/**
	 * 
	 */
	private static final long serialVersionUID = -6078216473511901668L;
	private static final Logger log = Logger.getLogger(SQL92FilterableTableModel.class);
	private RowValueProvider rowValueProvider;
	private ISelector selector;
	private IIdentifierExtension extension;

	public SQL92FilterableTableModel(TableModel model, RowValueProvider rowValueProvider, IIdentifierExtension extension) {
		this(model, extension);
		this.rowValueProvider = rowValueProvider;
	}

	public SQL92FilterableTableModel(TableModel model, IIdentifierExtension extension) {
		super(model);
		this.extension = extension;
	}

	public SQL92FilterableTableModel(TableModel model) {
		super(model);
	}

	public void setSelector(String selectorString) throws InvalidSelectorException {
		clearFilters();

		if (rowValueProvider == null) {
			throw new InvalidSelectorException("No RowValueProvider defined");
		}

		if (!TextUtils.isEmpty(selectorString)) {
			if (extension != null) {
				selector = Selector.getInstance(selectorString, extension);
			} else {
				selector = Selector.getInstance(selectorString);
			}

			Filter filter = new AbstractTableFilter() {
				/**
			 * 
			 */
				private static final long serialVersionUID = 7094288732603611045L;

				public boolean isValueFiltered(Object arg0) {
					final IValueProvider values = rowValueProvider.getValueProviderForRow(getRowIndex());

					return !(selector.eval(values, null) == Result.RESULT_TRUE);
				}
			};

			addFilter(filter);
		}

		setFiltersApplied(true);
	}

	public RowValueProvider getRowValueProvider() {
		return rowValueProvider;
	}

	public void setRowValueProvider(RowValueProvider rowValueProvider) {
		this.rowValueProvider = rowValueProvider;
	}
}