在下面的代码中实现本体的数据库存储为什么我的数据库中建立了看不到我的test。owl本体的数据那？？？？？？？？？？
请高手指点指点
public class ontology {
public static final String ONT1 = "http://www.owl-ontologies.com/Ontology1178677723.owl";
//public static final String ONT2 = "urn:x-hp-jena:test2";
public static final String DB_URL = "jdbc:mysql://localhost/a";
public static final String DB_USER = "root";
public static final String DB_PASSWD = "";
public static final String DB = "Mysql";
public static final String DB_DRIVER = "com.mysql.jdbc.Driver";
private static String s_dbURL = DB_URL;
private static String s_dbUser = DB_USER;
private static String s_dbPw = DB_PASSWD;
private static String s_dbType = DB;
private static String s_dbDriver = DB_DRIVER;
private static boolean s_reload = false;
// source URL to load data from; if null, use default
private static String s_source;
public static void main( String[] args ) {
System.out.println(args.length);
processArgs( args );
// check for default sources
if ( s_source == null) {
s_source = getDefaultSource();
// System.out.println(s_source);
}
// create the helper class we use to handle the persistent ontologies
PersistentOntology po = new PersistentOntology();
// ensure the JDBC driver class is loaded
try {
Class.forName( s_dbDriver );
}
catch (Exception e) {
System.err.println( "Failed to load the driver for the database: " + e.getMessage() );
System.err.println( "Have you got the CLASSPATH set correctly?" );
}
// are we re-loading the data this time?
if (s_reload) {
// we pass cleanDB=true to clear out existing models
// NOTE: this will remove ALL Jena models from the named persistent store, so
// use with care if you have existing data stored
ModelMaker maker = po.getRDBMaker( s_dbURL, s_dbUser, s_dbPw, s_dbType, true );
// now load the source data into the newly cleaned db
po.loadDB( maker, s_source );
//System.out.println("in s_reload");
}
// now we list the classes in the database, to show that the persistence worked
ModelMaker maker = po.getRDBMaker( s_dbURL, s_dbUser, s_dbPw, s_dbType, false );
po.listClasses( maker, s_source );
}
// Internal implementation methods
//////////////////////////////////
/**
* Process any command line arguments
*/
private static void processArgs( String[] args ) {
int i = 0;
while (i < args.length) {
String arg = args[i++];
if(arg.equals( "--dbUser" )){s_dbURL = args[i++];}
else if (arg.equals( "--dbURL" )){s_dbURL = args[i++];}
else if (arg.equals( "--dbPasswd" )) {s_dbPw = args[i++];}
else if (arg.equals( "--dbType" )){s_dbType = args[i++];}
else if (arg.equals( "--reload" )){s_reload = true;}
else if (arg.equals( "--dbDriver" )) {s_dbDriver = args[i++];}
else {
// assume this is a URL to load data from
s_source = arg;
}
}
}
/**
* Answer the default source document, and set up the document manager
* so that we can find it on the file system
*
* @return The URI of the default source document
*/
private static String getDefaultSource() {
// use the ont doc mgr to map from a generic URN to a local source file
OntDocumentManager.getInstance().addAltEntry( "http://www.w3.org/2001/sw/WebOnt/guide-src/wine","E:test1.owl" );
return ONT1;
}
}
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2008/2/28 15:34:00
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jena 存储 owl 本体 为什么数据库中无数据
