Hi all (sorry if you receive this message for the second time, it is still not
in archives ???!!!),
I have an issue regarding collection creation and index creation within a same
run, using
embedded mode. I provide the code of a simple app that points the issue.
I use build 1.1b4, and the issue is present both on Linux and Windows XP with
java 1.4.2_03
The application opens an embedded database, then creates a collection at root
level, then
creates an indexer in this newly created collection, then exits.
The first time I launch the app (run 0), traces are :
...
xindice logs
...
xmldb:xindice-embed:///db/exampleColl is not defined, creating it !!!
...
xindice logs
...
creating indexer toto
...
xindice logs
...
After execution, in . db is present, as well as db/exampleColl, and toto.idx
is actually created in db/exampleColl
When I restart the application (run 1), traces are :
...
xindice logs
...
creating indexer toto
...
xindice logs
...
Thus, in run 1, indexer has been re-created... Is this expected ??????
When I restart application (run 2), traces are :
...
xindice logs
...
indexer toto is already present
...
xindice logs
...
which is correct.
Thus, in this case I need 2 runs to ensure that indexer is actually created...
What worries me is that I'm not sure that, if in run0 I add documents in
collection and index them with the index, those information will be actually
recorded in database.
Note that, if I comment the index creation in run 0, I only create the
collection.
If I remove the comment for run 1, the indexer is created, and in run 2 the
application detects the newly created index correctly.
There seems to be something with index creation flush, or am I missing
something ?
thanks for your support,
Christophe.
package xindicex;
import org.xmldb.api.*;
import org.xmldb.api.base.*;
import org.xmldb.common.*;
import org.xmldb.xupdate.*;
import org.apache.xindice.client.xmldb.embed.DatabaseImpl;
import org.apache.xindice.client.xmldb.services.CollectionManager;
import org.apache.xindice.xml.dom.DOMParser;
import org.apache.xindice.util.*;
import org.apache.xindice.xml.dom.DocumentImpl;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import java.util.Hashtable;
import java.util.Enumeration;
public class example {
public static void main(String[] argv) {
// Simple app : creates an embedded database or retrieves it, creates
// a "exampleColl" collection at root level or retrieves it if it is
already present,
// creates an indexer "toto" in "exampleColl" or retrieves it if it is
already present.
Collection colroot = null;
Collection coll = null;
Database db;
try {
String driver = "org.apache.xindice.client.xmldb.embed.DatabaseImpl";
Class c = null;
c = Class.forName(driver);
db = (Database) c.newInstance();
//use default system.xml...
DatabaseManager.registerDatabase(db);
String uri = "xmldb:xindice-embed:///db/";
colroot = DatabaseManager.getCollection(uri);
// create or retrieve exampleColl
String curr = uri + "exampleColl" + "/";
coll = DatabaseManager.getCollection(curr);
if (coll == null) {
System.out.println(curr + " is not defined, creating it !!!");
CollectionManager service =
(CollectionManager) colroot.getService("CollectionManager", "1.0");
// Build up the Collection XML configuration.
String collectionConfig =
"<collection compressed=\"true\" " +
" name=\"" + "exampleColl" + "\">" +
" <filer class=\"org.apache.xindice.core.filer.BTreeFiler\"/>" +
"</collection>";
coll = service.createCollection("exampleColl",
DOMParser.toDocument(
collectionConfig));
}
// create or retrieve indexer toto
CollectionManager cm = (CollectionManager) coll.getService(
"CollectionManager", "1.0");
// check if indexer exists
String[] idxrs = cm.listIndexers();
for (int i = 0; i < idxrs.length; i++) {
if (idxrs[i].equals("toto")) {
System.out.println("indexer toto already present ");
return;
}
}
System.out.println("creating indexer toto ");
Document doc = new DocumentImpl();
Element elt = doc.createElement("index");
elt.setAttribute("class", "org.apache.xindice.core.indexer.NameIndexer");
elt.setAttribute("name", "toto");
elt.setAttribute("pattern", "titi");
doc.appendChild(elt);
cm.createIndexer(doc);
}
catch (XindiceException ex) {
System.out.println("init error : " + ex.getMessage());
}
catch (IllegalAccessException ex) {
System.out.println("init error : " + ex.getMessage());
}
catch (InstantiationException ex) {
System.out.println("init error : " + ex.getMessage());
}
catch (XMLDBException ex) {
System.out.println("init error : " + ex.getMessage());
}
catch (ClassNotFoundException ex) {
System.out.println("init error : " + ex.getMessage());
}
finally {
if (coll != null) {
try {
coll.close();
}
catch (XMLDBException ex1) {
}
}
if (colroot != null) {
try {
colroot.close();
}
catch (XMLDBException ex2) {
}
}
}
}
}
