// Utility function to clean up objects, exceptions or not,
// containers and environments must be closed.
private static void cleanup(myDbEnv env, XmlContainer openedContainer) {
try {
if (openedContainer != null) openedContainer.delete();
if (env != null) env.cleanup();
} catch (Exception e) {
// ignore exceptions on close
}
}
public static void main(String args[]) throws Throwable {
File path2DbEnv = null;
for (int i = 0; i < args.length; ++i) {
if (args[i].startsWith("-")) {
switch (args[i].charAt(1)) {
case 'h':
path2DbEnv = new File(args[++i]);
break;
default:
usage();
}
}
}
if (path2DbEnv == null || !path2DbEnv.isDirectory()) {
usage();
}
myDbEnv env = null;
XmlContainer openedContainer = null;
XmlTransaction txn = null;
try {
// Open an environment
env = new myDbEnv(path2DbEnv);
XmlManager theMgr = env.getManager();
// open a transactional container
XmlContainerConfig config = new XmlContainerConfig();
config.setTransactional(true);
openedContainer = theMgr.openContainer(theContainer, config);
// Start a transaction
txn = theMgr.createTransaction();
// Replace the index on the "product" node.
replaceAnIndex(
theMgr,
openedContainer,
"",
"product",
"node-attribute-substring-string node-element-equality-string",
txn);
// Commit the index replacement
txn.commit();
} catch (Exception e) {
System.err.println("Error replacing index for container " + theContainer);
System.err.println(" Message: " + e.getMessage());
// In the event of an error, we abort the operation
// The database is left in the same state as it was in before
// we started this operation.
if (txn != null) {
txn.abort();
}
throw e;
} finally {
cleanup(env, openedContainer);
}
} // end main