/*** 该类的职责是在WebApp启动时自动开启HSQL服务.

* 依然使用Server方式，不受AppServer的影响.

*

*@authorfrank

*@authorcalvin*/publicclassHsqlListenerimplementsServletContextListener {protectedstaticLog logger=LogFactory.getLog(HsqlListener.class);privatefinalstaticString DEFAULT_DB_PATH="{user.home}/springside/db";publicvoidcontextInitialized(ServletContextEvent sce) {

logger.info("HsqlListener initialize

");

String dbName=Config.getString("metawork.hsql.dbName");intport=-1;try{

port=Integer.parseInt(Config.getString("metawork.hsql.port"));

}catch(Exception e) {

}if(StringUtils.isEmpty(dbName)) {

logger.error("Cant' get hsqldb.dbName from web.xml Context Param");return;

}

String path=null;try{

path=getDbPath(sce);

}catch(URISyntaxException e) {//TODO Auto-generated catch blocke.printStackTrace();

}

File dbDir=newFile(path);if(!dbDir.exists()) {

logger.info("Create Path:"+path);if(!dbDir.mkdirs()) {

logger.error("Can not create DB Dir for Hsql:"+dbDir);return;

}

}if(!path.endsWith("/"))

path=path+"/";

startServer(path, dbName, port);

}privateString getDbPath(ServletContextEvent sce)throwsURISyntaxException {

String path=Config.getString("metawork.hsql.dbPath");if(StringUtils.isEmpty(path)) {

path=DEFAULT_DB_PATH;

}if(path.startsWith("{user.home}")) {

path=path.replaceFirst("\\{user.home\\}", System.getProperty("user.home").replace('\\','/'));

}if(path.startsWith("{webapp.root}")) {

path=path.replaceFirst("\\{webapp.root\\}", sce

.getServletContext().getRealPath("/").replace('\\','/'));

}if(path.startsWith("{classpath}")) {

path=path.replaceFirst("\\{classpath\\}",this.getClass().getClassLoader().getResource("").toURI().toString().replace("file:/",""));

}returnpath;

}privatevoidstartServer(String dbPath, String dbName,intport) {

Server server=newServer();

server.setDatabaseName(0, dbName);

server.setDatabasePath(0, dbPath+dbName);if(port!=-1)

server.setPort(port);

server.setSilent(true);

server.start();

logger.info("hsqldb started

");//等待Server启动try{

Thread.sleep(800);

}catch(InterruptedException e) {//do nothing}

}publicvoidcontextDestroyed(ServletContextEvent sce) {

String dbName=Config.getString("metawork.hsql.dbName");

Connection conn=null;try{

Class.forName("org.hsqldb.jdbcDriver");

conn=DriverManager.getConnection("jdbc:hsqldb:hsql://localhost:"+Config.getString("metawork.hsql.port")+"/"+dbName,"sa","");

Statement stmt=conn.createStatement();

stmt.executeUpdate("SHUTDOWN;");

}catch(Exception e) {//do nothing}

}

}