SQLFilterClauses.java

package net.sourceforge.squirrel_sql.client.session.sqlfilter;
/*
 * Copyright (C) 2003-2004 Maury Hammel
 * mjhammel@users.sourceforge.net
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * 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.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */
import java.io.Serializable;
import java.util.HashMap;
/**
 * This class contains the information used to build the Where and Order By
 * clauses used by the database query triggered by selecting the Contents tab
 * in the Session internal frame.
 *
 */
public class SQLFilterClauses implements Serializable
{
    private static final long serialVersionUID = 1L;

    /** The container for the SQL filter information */
	HashMap<String, HashMap<String, String>> _sqlClauseInformation;

	/**
	 * Creates a new instance of SQLFilterClauses.
	 */
	public SQLFilterClauses()
	{
		_sqlClauseInformation = new HashMap<String, HashMap<String, String>>();
	}

	/**
	 * Return the value of the SQL filter information
	 *
	 * @param	clauseName	The name of the clause for which the information is
	 *						required.
	 * @param	tableName	The database table name for which the information is required.
	 *
	 * @return A string value containing the requested information
	 */
	public String get(String clauseName, String tableName)
	{
		HashMap<String, String> filterData = _sqlClauseInformation.get(tableName);
		return (filterData == null) ? null : filterData.get(clauseName);
	}

	/**
	 * Update (or create) SQL Filter information for a session.
	 *
	 * @param	clauseName	The name of the clause for which the information pertains.
	 * @param	tableName	The name of the database table for the filter information.
	 *
	 * @param clauseInformation The SQL filter information to be saved.
	 */
	public void put(String clauseName, String tableName,
						String clauseInformation)
	{
		HashMap<String, String> filterData = _sqlClauseInformation.get(tableName);
		if (filterData == null)
		{
			filterData = new HashMap<String, String>();
		}
		filterData.put(clauseName, clauseInformation);
		_sqlClauseInformation.put(tableName, filterData);
	}
}