/**
* Runs an SQL select statement to determine if the Quartz lock rows exist in the database. If the
* rows do not exist this method assumes this is the first time the scheduler has been started.
* The select statement will be defined in the {vendor}/checkTables.sql file within the shared
* library deployed by this project. The statement should be of the form "SELECT COUNT(*) from
* QUARTZ_LOCKS;". If the count is zero it is assumed this is a new install. If the count is
* non-zero it is assumed the QUARTZ_LOCKS table has been initialized and this is not a new
* install.
*
* @param sqlService
* @return
*/
private boolean isInitialStartup(SqlService sqlService) {
String checkTablesScript = sqlService.getVendor() + "/checkTables.sql";
ClassLoader loader = this.getClass().getClassLoader();
String chkStmt = null;
InputStream in = null;
BufferedReader r = null;
try {
// find the resource from the loader
in = loader.getResourceAsStream(checkTablesScript);
r = new BufferedReader(new InputStreamReader(in));
chkStmt = r.readLine();
} catch (Exception e) {
LOG.error(
"Could not read the file "
+ checkTablesScript
+ " to determine if this is a new installation. Preconfigured jobs will only be loaded if the server property scheduler.loadjobs is \"true\"",
e);
return false;
} finally {
try {
r.close();
} catch (Exception e) {
}
try {
in.close();
} catch (Exception e) {
}
}
List<String> l = sqlService.dbRead(chkStmt);
if (l != null && l.size() > 0) {
return (l.get(0).equalsIgnoreCase("0"));
} else {
return false;
}
}
/** Final initialization, once all dependencies are set. */
public void init() {
setClusterServiceSql(m_sqlService.getVendor());
try {
// if we are auto-creating our schema, check and create
if (m_autoDdl) {
m_sqlService.ddl(this.getClass().getClassLoader(), "sakai_cluster");
}
// start the maintenance thread
m_maintenance = new Maintenance();
m_maintenance.start();
M_log.info(
"init: refresh: "
+ m_refresh
+ " expired: "
+ m_expired
+ " ghostingPercent: "
+ m_ghostingPercent);
} catch (Throwable t) {
M_log.warn("init(): ", t);
}
}
public static java.lang.String getVendor() {
org.sakaiproject.db.api.SqlService service = getInstance();
if (service == null) return null;
return service.getVendor();
}