@Test
public void testBasicQuery() {
BasicDBObject query = new BasicDBObject();
query.put(EmployeeProperties.EMPLOYEE_ID, "28241");
BasicDBObject fields = new BasicDBObject();
fields.put(EmployeeProperties.ID, 0);
fields.put(EmployeeProperties.LAST_NAME, 1);
fields.put(EmployeeProperties.EMPLOYEE_ID, 1);
DBCollection collection = mongoOps.getCollection(EmployeeProperties.COLLECTION);
log.info(
"MongoDB Query Explain Plan: "
+ collection
.find(query, fields)
.hint(new BasicDBObject(EmployeeProperties.EMPLOYEE_ID, 1))
.explain());
DBCursor cursor =
collection.find(query, fields).hint(new BasicDBObject(EmployeeProperties.EMPLOYEE_ID, 1));
log.info(cursor.count() + "");
assertNotNull("cursor was null.", cursor);
assertEquals("cursor count was not 1.", 1, cursor.count());
log.info("Query (" + query.toString() + ")");
while (cursor.hasNext()) {
DBObject dbo = cursor.next();
log.info(dbo.toString());
assertEquals("Keyset size not equal to 2.", 2, dbo.keySet().size());
}
log.info(cursor.explain().toString());
}
public <T> T eachNode(ReadChildrenEach<T> readJob) {
DBCursor cursor = null;
try {
cursor = collection.find(filters(), fields(), skip, offset).sort(orderBy).limit(offset);
if (this.hint != null) cursor.hint(hint);
else if (this.hintIndexName != null) cursor.hint(hintIndexName);
session.attribute(Explain.class.getCanonicalName(), Explain.create(cursor.explain()));
ReadChildrenIterator citer = ReadChildrenIterator.create(session, cursor);
T result = readJob.handle(citer);
return result;
} finally {
IOUtil.close(cursor);
}
}
