umich.cac.queryengine
Interface QueryEngine

All Known Implementing Classes:

XIndiceQueryEngine

public interface QueryEngine

A engine to query XML databases.

Version:

$Header: /cvsroot/pbsaccounting/pbsaccounting/darkslide/doc/javadoc/umich/cac/queryengine/QueryEngine.html,v 1.3 2003/12/18 17:16:08 rodmach Exp $

Author:

rmach@umich.edu

Method Summary

boolean	connect() Connect to the database.
void	dispose() Close any resources (like database connections) that were acquired)
java.util.Vector	query(java.lang.String xpath) Perform an XPATH query using XML:DB against the current collection and return a vector of Node results from the query.

Method Detail

connect

public boolean connect()

Connect to the database.

Returns:

true if connected, false otherwise

dispose

public void dispose()

Close any resources (like database connections) that were acquired)

query

public java.util.Vector query(java.lang.String xpath)

Perform an XPATH query using XML:DB against the current collection and return a vector of Node results from the query.

Parameters:

xpath - The XPATH query to perform

Returns:

List of org.w3c.Node results from the XPATH query, or empty Vector if no results