It appears so far that numeric sorting on a double doesn't work yet. I am
probably doing something wrong. I wondering what kind of cost you get when
sorting numerically on GAE? I am thinking to moving the index to bytes, and
sort by byte (string).
Anybody sort a double?
@Persistent
private double index;
private String query(FileByteData fbd) {
String base64 = null;
DatastoreService datastore = DatastoreServiceFactory.getDatastoreService();
try {
Query q = new Query("BlobTmpJdo");
q.addFilter("key", FilterOperator.EQUAL, fbd.getKey());
q.addSort("index");
PreparedQuery e = datastore.prepare(q);
Iterator<Entity> itr = e.asIterator();
while (itr.hasNext()) {
if (base64 == null) {
base64 = "";
}
Entity entity = itr.next();
base64 += entity.getProperty("base64");
log.info("query(): index=" + entity.getProperty("index") + " base64=" +
entity.getProperty("base64"));
}
} catch (Exception e) {
e.printStackTrace();
log.log(Level.SEVERE, "", e);
}
return base64;
}
query(): index=45.0 base64=null
query(): index=45.01 base64=null
query(): index=45.02 base64=null
query(): index=45.03 base64=null
query(): index=45.04 base64=null
query(): index=45.05 base64=null
query(): index=45.06 base64=null
query(): index=45.07 base64=null
query(): index=45.08 base64=null
query(): index=45.09 base64=null
query(): index=45.1 base64=null
query(): index=45.11 base64=null
query(): index=45.12 base64=null
query(): index=45.13 base64=null
query(): index=45.14 base64=null
query(): index=45.15 base64=null
query(): index=45.16 base64=null
query(): index=45.17 base64=null
query(): index=45.18 base64=null
query(): index=45.19 base64=null
query(): index=45.2 base64=null
query(): index=45.21 base64=null
query(): index=45.22 base64=null
qu...
Brandon Donnelson
http://gwt-examples.googlecode.com
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