001/**
002 * Copyright 2015 Tampere University of Technology, Pori Department
003 * 
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 * 
008 *   http://www.apache.org/licenses/LICENSE-2.0
009 * 
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016package core.tut.pori.dao.clause;
017
018/**
019 * Base class for SQL WHERE clauses.
020 */
021public abstract class WhereClause implements SQLClause{   
022  /**
023   * Type of the WhereClause
024   */
025  public enum ClauseType{
026    /** sql OR clause */
027    OR(" OR "),
028    /** sql AND clause */
029    AND(" AND ");
030
031    private String _value;
032
033    /**
034     * 
035     * @param value
036     */
037    private ClauseType(String value){
038      _value = value;
039    }
040
041    /**
042     * 
043     * @return the clause type as a string
044     */
045    public String toClauseString(){
046      return _value;
047    }
048  } // enum ClauseType
049
050  /**
051   * 
052   * @return type of the clause
053   */
054  public abstract ClauseType getClauseType();
055}