/*
* Copyright 2009 Ralf Joachim, Ahmad Hassan
*
* 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 org.castor.cpa.persistence.sql.query;
/**
* Constants for SQL queries.
*
* @author <a href="mailto:ahmad DOT hassan AT gmail DOT com">Ahmad Hassan</a>
* @author <a href="mailto:ralf DOT joachim AT syscon DOT eu">Ralf Joachim</a>
* @version $Revision$ $Date: 2006-04-25 15:08:23 -0600 (Tue, 25 Apr 2006) $
*/
public final class QueryConstants {
//-----------------------------------------------------------------------------------
/** 'SELECT' keyword of a SQL delete query. */
public static final String SELECT = "SELECT";
/** 'DELETE' keyword of a SQL delete query. */
public static final String DELETE = "DELETE";
/** 'UPDATE' keyword of a SQL update query. */
public static final String UPDATE = "UPDATE";
/** 'INSERT' keyword of a SQL insert query. */
public static final String INSERT = "INSERT";
/** 'VALUES' keyword of a SQL insert query. */
public static final String VALUES = "VALUES";
/** 'INTO' keyword of insert query. */
public static final String INTO = "INTO";
/** '*' for select query. */
public static final char STAR = '*';
/** 'SET' keyword of a SQL update query. */
public static final String SET = "SET";
/** 'FROM' keyword of a SQL query. */
public static final String FROM = "FROM";
/** 'WHERE' keyword of a SQL query. */
public static final String WHERE = "WHERE";
/** 'AND' keyword for conditions of SQL queries. */
public static final String AND = "AND";
/** 'OR' keyword for conditions of SQL queries. */
public static final String OR = "OR";
/** 'NOT' keyword for conditions of SQL queries. */
public static final String NOT = "NOT";
/** 'IS' keyword for conditions of SQL queries. */
public static final String IS = "IS";
/** 'NULL' keyword for conditions of SQL queries. */
public static final String NULL = "NULL";
/** 'JOIN' keyword for constructing joins of SQL queries. */
public static final String JOIN = "JOIN";
/** 'ON' keyword for constructing joins of SQL queries. */
public static final String ON = "ON";
/** 'FOR' keyword for constructing FOR UPDATE-clauses. */
public static final String FOR = "FOR";
/** 'WITH' keyword for constructing WITH LOCK-clauses. */
public static final String WITH = "WITH";
/** 'LOCK' keyword for constructing WITH LOCK-clauses. */
public static final String LOCK = "LOCK";
/** 'HOLDLOCK' keyword for constructing WITH (HOLDLOCK)-clauses. */
public static final String HOLDLOCK = "HOLDLOCK";
/** Character to use for spaces in SQL query. */
public static final char SPACE = ' ';
/** Character separating qualifier and column in a SQL query. */
public static final char DOT = '.';
/** Character representing a parameter in a SQL query. */
public static final char PARAMETER = '?';
/** Left parenthesis character for SQL query. */
public static final char LPAREN = '(';
/** Right parenthesis character for SQL query. */
public static final char RPAREN = ')';
/** Character to assign a value to a column in set clause of an SQL update query. */
public static final char ASSIGN = '=';
/** Character to separate multiple assignments in set clause of an SQL update query. */
public static final char SEPERATOR = ',';
//-----------------------------------------------------------------------------------
/**
* Hide utility class constructor.
*/
private QueryConstants() { }
//-----------------------------------------------------------------------------------
}