public boolean acceptsURL(String url) 
{
        if (Trace.TRACE) {
            Trace.trace(url);
        }
        return url.toLowerCase().startsWith(sStartURL);
}

Returns true if the driver thinks that it can open a connection to the given URL. Typically drivers will return true if they understand the subprotocol specified in the URL and false if they don't.

 public Connection connect(String url,
    Properties info) throws SQLException 
{
                                                                                                                                                                                                                      
        if (!acceptsURL(url)) {
            return null;
        }
        String s = url.substring(sStartURL.length());
        return new jdbcConnection(s, info);
}

Attempts to make a database connection to the given URL. The driver returns "null" if it realizes it is the wrong kind of driver to connect to the given URL. This will be common, as when the JDBC driver manager is asked to connect to a given URL it passes the URL to each loaded driver in turn.

The driver raises a SQLException if it is the right driver to connect to the given URL, but has trouble connecting to the database.

The java.util.Properties argument can be used to passed arbitrary string tag/value pairs as connection arguments.

For HSQL Database Engine, at least "user" and "password" properties must be included in the Properties.

 public int getMajorVersion() 
{
        if (Trace.TRACE) {
            Trace.trace();
        }
        return MAJOR;
}

Gets the driver's major version number.

 public int getMinorVersion() 
{
        if (Trace.TRACE) {
            Trace.trace();
        }
        return MINOR;
}

Gets the driver's minor version number.

 public DriverPropertyInfo[] getPropertyInfo(String url,
    Properties info) 
{
        if (Trace.TRACE) {
            Trace.trace();
        }
        String[]           choices = new String[] {
            "true", "false"
        };
        DriverPropertyInfo pinfo[] = new DriverPropertyInfo[2];
        DriverPropertyInfo p;
        p          = new DriverPropertyInfo("user", null);
        p.value    = info.getProperty("user");
        p.required = true;
        pinfo[0]   = p;
        p          = new DriverPropertyInfo("password", null);
        p.value    = info.getProperty("password");
        p.required = true;
        pinfo[1]   = p;
        p          = new DriverPropertyInfo("strict_md", null);
        p.value    = info.getProperty("strict_md");
        p.required = false;
        p.choices  = choices;
        pinfo[1]   = p;
        p          = new DriverPropertyInfo("get_column_name", null);
        p.value    = info.getProperty("get_column_name");
        p.required = false;
        p.choices  = choices;
        pinfo[1]   = p;
        return pinfo;
}

Gets information about the possible properties for this driver.

The getPropertyInfo method is intended to allow a generic GUI tool to discover what properties it should prompt a human for in order to get enough information to connect to a database. Note that depending on the values the human has supplied so far, additional values may become necessary, so it may be necessary to iterate though several calls to getPropertyInfo. HSQLDB-Specific Information:

HSQLDB 1.7.1 uses the values submitted in info to set the value for each DriverPropertyInfo object returned. It does not use the default value that it would use for the property if the value is null.

 public boolean jdbcCompliant() 
{
        if (Trace.TRACE) {
            Trace.trace();
            // todo: not all required features are implemented yet
        }
        return false;
}

Reports whether this driver is a genuine JDBC COMPLIANT^TM driver. A driver may only report true here if it passes the JDBC compliance tests; otherwise it is required to return false. JDBC compliance requires full support for the JDBC API and full support for SQL 92 Entry Level. It is expected that JDBC compliant drivers will be available for all the major commercial databases.

HSQL Database Engine currently does not yet support all required SQL 92 Entry Level functionality and thus returns false. The features that are missing are currently 'HAVING' and views. It looks like other drivers return true but do not support all features.

This method is not intended to encourage the development of non-JDBC compliant drivers, but is a recognition of the fact that some vendors are interested in using the JDBC API and framework for lightweight databases that do not support full database functionality, or for special databases such as document information retrieval where a SQL implementation may not be feasible.