// 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
}
}
// Method used to replace an index with a new index type
private static void replaceAnIndex(
XmlManager mgr,
XmlContainer container,
String URI,
String nodeName,
String indexType,
XmlTransaction txn)
throws Throwable {
System.out.println("Replacing index specification " + indexType + " for node " + nodeName);
// Retrieve the index specification from the container
XmlIndexSpecification idxSpec = container.getIndexSpecification(txn);
// See what indexes exist on the container
int count = 0;
System.out.println("Before index replacement.");
XmlIndexDeclaration idxDecl = null;
while ((idxDecl = (idxSpec.next())) != null) {
System.out.println(
"\tFor node '" + idxDecl.name + "', found index: '" + idxDecl.index + "'.");
count++;
}
System.out.println(count + " indexes found.");
// Replace the container's index specification with a new specification
idxSpec.replaceIndex(URI, nodeName, indexType);
// Set the specification back to the container
container.setIndexSpecification(txn, idxSpec, mgr.createUpdateContext());
// Look at the indexes again to make sure our replacement took.
count = 0;
idxSpec.reset();
System.out.println("After index replacement.");
while ((idxDecl = (idxSpec.next())) != null) {
System.out.println(
"\tFor node '" + idxDecl.name + "', found index: '" + idxDecl.index + "'.");
count++;
}
System.out.println(count + " indexes found.");
idxSpec.delete();
}
/*
* @{InheritDoc}
*/
public List<String> getAllDocumentsNames() {
List<String> names = new ArrayList<String>();
XmlContainer cont = null;
XmlTransaction trans = null;
try {
cont = xmlManager.openContainer(containerName);
trans = xmlManager.createTransaction();
XmlResults results = cont.getAllDocuments(trans, XmlDocumentConfig.DEFAULT);
while (results.hasNext()) {
names.add(results.next().asDocument().getName());
}
results.delete();
return names;
} catch (XmlException e) {
logger.logWarning(this.getClass().toString(), "Retrieving all documents names failed!");
return null;
} finally {
commitAndClose(trans, cont);
}
}
/*
* @{InheritDoc}
*/
public List<String[]> getAllIndexes() {
List<String[]> indexes = new ArrayList<String[]>();
XmlIndexSpecification indexSpec = null;
XmlContainer cont = null;
XmlTransaction trans = null;
try {
cont = xmlManager.openContainer(containerName);
trans = xmlManager.createTransaction();
indexSpec = cont.getIndexSpecification();
XmlIndexDeclaration indexDeclaration = null;
while ((indexDeclaration = (indexSpec.next())) != null) {
indexes.add(new String[] {indexDeclaration.name, indexDeclaration.index});
}
return indexes;
} catch (XmlException e) {
logger.logWarning(this.getClass().toString(), "Listing indexes failed! - Xml exeption");
return null;
} finally {
indexSpec.delete();
commitAndClose(trans, cont);
}
}