irdbdriver.java

jena2.5.4推理机系统的一种最基本实现 HP实验室出品

	/**
	 * Generate an SQL string to match a table column value to a constant.
	 * If the literal does not occur in the database, a match condition
	 * is generated that will always return false.
	 * There's a known bug in this method. the literal is converted to
	 * a string BEFORE the query is run. consequently, there's a race
	 * condition. if the (long) literal is not in the database
	 * when the query is compiled but is added prior to running the
	 * query, then the query will (incorrectly) return no results.
	 * for now, we'll ignore this case and document it as a bug.
	 * @param alias The table alias for this match.
	 * @param col The column to match, one of S,P,O,N,T for subject,
	 * predicate, object, statement or type, respectively.
	 * @param lit The literal value to match.
	 * @return SQL string.
	 */	
	
	public String genSQLQualConst ( int alias, char col, Node lit );
	
	/**
	 * Similar to genSQLQualConst except that it generates SQL strings
	 * for the reification statement table.
	 *
	 */
	public String genSQLReifQualConst ( int alias, char pred, Node lit );

	
	/**
	 * Generate an SQL string to match a table column value to a parameter.
	 * @param alias The table alias for this match.
	 * @param col The column to match, one of S,P,O,N,T for subject,
	 * predicate, object, statement or type, respectively.
	 * @return SQL string.
	 */	

	public String genSQLQualParam( int alias, char col );
	
	/**
	 * Generate an SQL string to match a graph id. 
	 * @param alias The table alias for this match.
	 * @param graphId The identifer of the graph to match.
	 * @return SQL string.
	 */	

	public String genSQLQualGraphId( int alias, int graphId );
	
	public String genSQLStringMatch( int alias, char col,
		String fun, String stringToMatch );
	
	public String genSQLStringMatchLHS( boolean ignCase, String var );
	public String genSQLStringMatchLHS_IC( String var );
	
	public String genSQLStringMatchOp( boolean ignCase, String fun );

	public String stringMatchAllChar();
	public String stringMatchEscapeChar();

	public String genSQLStringMatchRHS( boolean ignCase, boolean pfxMatch,
									String strToMatch );
	public String genSQLStringMatchRHS_IC( String strToMatch );

	public String genSQLStringMatchOp( String fun );

	public String genSQLStringMatchOp_IC( String fun );
	
	public boolean stringMatchNeedsEscape ( String strToMatch );

	public String addEscape ( String strToMatch );
	
	public String genSQLStringMatchEscape();
	
	public String genSQLLikeKW();

	public String genSQLEscapeKW();

	
	
	
	/**
	 * Generate an SQL string to joing two table columns.
	 * @param lhsAlias The left side table alias for the join.
	 * @param lhsCol The left side column to join, one of
	 * S,P,O,N,T.
	 * @param rhsAlias The right side table alias to join.
	 * @param rhsCol The right side column to join.
	 * @return SQL string.
	 */	

	public String genSQLJoin( int lhsAlias, char lhsCol,
		int rhsAlias, char rhsCol );
		
	/**
	 * Generate an SQL string for a result list of a select stmt.
	 * @param binding Array of Var containing the result list bindings.
	 * @return SQL string (not prefixed by "Select").
	 */	
	
	public String genSQLResList( int resIndex[], VarDesc[] binding );

	/**
	 * Generate an SQL string for a from list of a select stmt.
	 * @param aliasCnt The number of table aliases in the from list.
	 * @param table The name of the table to be queried.
	 * @return SQL string (not prefixed by "From").
	 */	
	
	public String genSQLFromList( int aliasCnt, String table );

		
	/**
	 * Generate an SQL Select statement given the result list,
	 * the from list and the where clause;
	 * @param res The result list as a string.
	 * @param from The from list as a string.
	 * @param where The where qualifier as a string.
	 * @return SQL statement.
	 */	

	public String genSQLSelectStmt( String res, String from, String where );
	
	public class GenSQLAnd {
		 private boolean init;
		 GenSQLAnd () { init = false; }
		 String gen( String qual ) {
			if ( qual == "" ) return "";
			if ( init == false ) {
				init = true;
				return qual;
			} else
				return " AND " + qual;
		 }  	 
	}
	
	/**
	 * Get the maximum possible value of LongObjectLength
	 * @return int
	 */
	public int getLongObjectLengthMax();

	/**
	 * Get the value of LongObjectLength
	 * @return int
	 */
	public int getLongObjectLength();

	/**
	* Set the value of LongObjectLength. Throws an exception if
	* the database has been initialized.
	* @param int
	*/
	public void setLongObjectLength(int len);

	/**
	 * Get the maximum possible value of IndexKeyLength
	 * @return int
	 */
	public int getIndexKeyLengthMax();

	/**
	 * Get the value of IndexKeyLength
	 * @return int
	 */
	public int getIndexKeyLength();

	/**
	* Set the value of IndexKeyLength. Throws an exception if
	* the database has been initialized.
	* @param int
	*/
	public void setIndexKeyLength(int len);

	/**
	* Get the value of IsTransactionDb
	* @return bool
	*/
	public boolean getIsTransactionDb();

	/**
	* Set the value of IsTransactionDb. Throws an exception if
	* the database has been initialized.
	* @param bool
	*/
	public void setIsTransactionDb(boolean bool);

	/**
	* Get the value of DoCompressURI
	* @return bool
	*/
	public boolean getDoCompressURI();

	/**
	* Set the value of DoCompressURI. Throws an exception if
	* the database has been initialized.
	* @param bool
	*/
	public void setDoCompressURI(boolean bool);

	/**
		* Get the value of CompressURILength
		* @return int
		*/
	public int getCompressURILength();

	/**
	* Set the value of CompressURILength. Throws an exception if
	* the database has been initialized.
	* @param int
	*/
	public void setCompressURILength(int len);

	/**
	* Get the value of DoDuplicateCheck
	* @return bool
	*/
	public boolean getDoDuplicateCheck();

	/**
	* Set the value of DoDuplicateCheck.
	* @param bool
	*/
	public void setDoDuplicateCheck(boolean bool);

	/**
	* Get the value of TableNamePrefix
	* @return String
	*/
	public String getTableNamePrefix();

	/**
	* Set the value of TableNamePrefix.
	* @param String
	*/
	public void setTableNamePrefix(String prefix);
	
	/**
	* Get the value of StoreWithModel
	* @return String
	*/
	public String getStoreWithModel();

	/**
	* Set the value of StoreWithModel.
	* @param String
	*/
	public void setStoreWithModel( String modelName );
	
	/**
	* Get the value of CompressCacheSize
	* @return int
	*/
	public int getCompressCacheSize();

	/**
	* Set the value of CompressCacheSize.
	* @param int
	*/
	public void setCompressCacheSize(int count);
	
	/**
	 * Return the number of system tables.
	 */

	public int getSystemTableCount();
	
	/**
	 * Return the name of a system table
	 */

	public String getSystemTableName ( int i );

}

/*
 *  (c) Copyright 2003, 2004, 2005, 2006, 2007 Hewlett-Packard Development Company, LP
 *  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.

 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */