Examples of DBCursor

com.massivecraft.mcore.xlib.mongodb.DBCursor
An iterator over database results. Doing a find() query on a collection returns a DBCursor thus
```
 DBCursor cursor = collection.find( query ); if( cursor.hasNext() ) DBObject obj = cursor.next(); 
```
Warning: Calling toArray or length on a DBCursor will irrevocably turn it into an array. This means that, if the cursor was iterating over ten million results (which it was lazily fetching from the database), suddenly there will be a ten-million element array in memory. Before converting to an array, make sure that there are a reasonable number of results using skip() and limit().
For example, to get an array of the 1000-1100th elements of a cursor, use
```
 List obj = collection.find( query ).skip( 1000 ).limit( 100 ).toArray(); 
```
@dochub cursors
com.mongodb.DBCursor
An iterator over database results. Doing a find() query on a collection returns a DBCursor thus
```
 DBCursor cursor = collection.find( query ); if( cursor.hasNext() ) DBObject obj = cursor.next(); 
```
Warning: Calling toArray or length on a DBCursor will irrevocably turn it into an array. This means that, if the cursor was iterating over ten million results (which it was lazily fetching from the database), suddenly there will be a ten-million element array in memory. Before converting to an array, make sure that there are a reasonable number of results using skip() and limit().
For example, to get an array of the 1000-1100th elements of a cursor, use
```
 List obj = collection.find( query ).skip( 1000 ).limit( 100 ).toArray(); 
```
@dochub cursors
com.sun.sgs.service.store.db.DbCursor
The interface to a cursor for iterating over the contents of a database. A newly created cursor has no current key or value. Cursors are associated with a single transaction, and must be created and closed within that single transaction. Cursors must not be used after the {@link #close close} methodis called. Cursor implementations are not required to be synchronized.

Examples of com.mongodb.DBCursor

        range.getTargetID()).append("logId", range.getLogID());
    if (high > 0) {
      filter.append("id", new BasicDBObject("$lte", high));
    }


    DBCursor cursor = collection.find(filter);
    cursor.sort(new BasicDBObject("id", 1));


    List<LogEvent> logevents = new ArrayList<LogEvent>();
    while (cursor.hasNext()) {
      DBObject event = cursor.next();
      String targetId = (String) event.get("targetId");
      long logId = (Long) event.get("logId");
      long id = (Long) event.get("id");
      long time = (Long) event.get("time");
      int type = (Integer) event.get("type");

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Examples of com.mongodb.DBCursor

    DBCollection collection = m_mongoDBService.getDB().getCollection(m_logname);


    BasicDBObject filter = new BasicDBObject().append("targetId", targetID)
        .append("logId", logID);


    DBCursor cursor = collection.find(filter);
    cursor.sort(new BasicDBObject("id", -1));


    long high = 1;
    if (cursor.hasNext()) {
      DBObject row = cursor.next();
      high = (Long) row.get("id");
      return new LogDescriptor(targetID, logID, new SortedRangeSet(
          new Range(1, high).toRepresentation()));
    } else {
      return new LogDescriptor(targetID, logID, SortedRangeSet.FULL_SET);

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Examples of com.mongodb.DBCursor

        return this.find(filter, null, null, null);
    }


    public List<DBObject> find() {
        if (null != _coll) {
            final DBCursor cursor = _coll.find();
            return null != cursor ? cursor.toArray() : new ArrayList<DBObject>();
        }
        return null;
    }

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Examples of com.mongodb.DBCursor

    }


    public List<DBObject> find(final DBObject filter, final String[] fieldNames,
            final String[] sortAscBy, final String[] sortDescBy) {
        if (null != _coll) {
            final DBCursor cursor = this.cursor(
                    filter, fieldNames, 0, 0, sortAscBy, sortDescBy);
            return null != cursor
                    ? cursor.toArray()
                    : new ArrayList<DBObject>();
        }
        return null;
    }

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Examples of com.mongodb.DBCursor

     */
    public List<DBObject> find(final DBObject filter, final String[] fieldNames,
            final int skip, final int limit,
            final String[] sortAscBy, final String[] sortDescBy) {
        if (null != _coll) {
            final DBCursor cursor = this.cursor(
                    filter, fieldNames, skip, limit, sortAscBy, sortDescBy);
            return null != cursor
                    ? cursor.toArray()
                    : new ArrayList<DBObject>();
        }
        return null;
    }

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Examples of com.mongodb.DBCursor

        return new ArrayList<String>();
    }
    // </editor-fold>


    public int count(final DBObject filter) {
        DBCursor cursor;
        if (null != filter) {
            cursor = null != _coll ? _coll.find(filter) : null;
        } else {
            cursor = null != _coll ? _coll.find() : null;
        }
        return null != cursor ? cursor.count() : 0;
    }

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Examples of com.mongodb.DBCursor


    private DBCursor cursor(final DBObject filter, final String[] fieldNames,
            final int skip, final int limit,
            final String[] sortAscBy, final String[] sortDescBy) {
        if (null != _coll) {
            DBCursor cursor;
            final DBObject fields = this.getFields(fieldNames, true);
            final DBObject sort = BeeMongoUtils.getSortFields(sortAscBy, sortDescBy);
            if (null != filter) {
                cursor = null != fields
                        ? _coll.find(filter, fields)
                        : _coll.find(filter);
            } else {
                cursor = null != fields
                        ? _coll.find(new BasicDBObject(), fields)
                        : _coll.find();
            }


            // limit data
            if (skip > 0 || limit > 0) {
                if (skip > 0) {
                    cursor = cursor.skip(skip);
                }
                if (limit > 0) {
                    cursor = cursor.limit(limit);
                }
            }


            // sort
            if (null != cursor && null != sort) {
                cursor = cursor.sort(sort);
            }


            return cursor;
        }
        return null;

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Examples of com.mongodb.DBCursor

        queryBuilder.and("_id").greaterThan(parent + "/");
        queryBuilder.and("_id").lessThanEquals(parent + "0");
        DBObject query = queryBuilder.get();
        BasicDBObject keys = new BasicDBObject();
        keys.put("_id", 1);
        DBCursor cursor = nodes.find(query, keys);
        int count = 0;
        log("Query plan: " + cursor.explain());
        long time = System.currentTimeMillis();
        while (cursor.hasNext()) {
            DBObject obj = cursor.next();
            // dummy read operation (to ensure we did get the data)
            obj.get("_id");
            count++;
            // log(" read " + obj);
        }

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Examples of com.mongodb.DBCursor

        queryBuilder.greaterThanEquals(fromKey);
        queryBuilder.lessThan(toKey);
        DBObject query = queryBuilder.get();
        long start = start();
        try {
            DBCursor cursor = dbCollection.find(query);
            List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
            for (int i = 0; i < limit && cursor.hasNext(); i++) {
                DBObject o = cursor.next();
                Map<String, Object> map = convertFromDBObject(o);
                if (collection == Collection.NODES) {
                    String key = (String) map.get(UpdateOp.ID);
                    nodesCache.put(key, new CachedDocument(map));
                }

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Examples of com.mongodb.DBCursor

            if (this.lastHeadRevId < syncMongo.getHeadRevisionId()) {
                DBCollection commitCollection = ((MongoNodeStore)microKernel.getNodeStore()).getCommitCollection();
                DBObject query = QueryBuilder.start(MongoCommit.KEY_REVISION_ID).greaterThan(this.lastRevId)
                        .and(MongoCommit.KEY_REVISION_ID).lessThanEquals(syncMongo.getHeadRevisionId()).get();
                DBObject sort = QueryBuilder.start(MongoCommit.KEY_REVISION_ID).is(1).get();
                DBCursor dbCursor = commitCollection.find(query).sort(sort);
                while (dbCursor.hasNext()) {
                    commitMongos.add((MongoCommit) dbCursor.next());
                }


                if (commitMongos.size() > 0) {
                    LOG.debug(String.format("Found %d new commits", commitMongos.size()));

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