Examples of com.mongodb.DBCollection.update()

com.mongodb.DBCollection.update()
rg/display/DOCS/Atomic+Operations">http://www.mongodb.org/display/DOCS/Atomic+Operations @param concern the write concern @return @throws MongoException @dochub update

                DBCollection coll = getCollection();


                DBObject query = getTemplateObject(changedRole);
                DBObject update = m_helper.serializeUpdate(changedRole);


                WriteResult result = coll.update(query, update, false /* upsert */, false /* multi */);


                if (result.getLastError() != null) {
                    result.getLastError().throwOnError();
                }
            }

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                for (String key : keys) {
                    cachedDocs.put(key, nodesCache.getIfPresent(key));
                }
            }
            try {
                WriteResult writeResult = dbCollection.update(query.get(), update, false, true, WriteConcern.SAFE);
                if (writeResult.getError() != null) {
                    throw new MicroKernelException("Update failed: " + writeResult.getError());
                }
                // update cache
                for (Entry<String, NodeDocument> entry : cachedDocs.entrySet()) {

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      byte[] value = new byte[0];
      if(col.getValue() != null)
        value = col.getValue();
      doc.append(StandardConverters.convertToString(col.getName()), value);
    }
    table.update(row, new BasicDBObject("$set", doc));
  }


  public BasicDBObject findOrCreateRow(DBCollection table, byte[] key) {
    DBObject row = table.findOne(key);
    if(row == null) {

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        // full-signature method update(DBObject, DBObject, boolean, boolean). However, the default behaviour may change in the future, 
        // so it's safer to be explicit at this level for full determinism
        if (multi == null && upsert == null) {
            // for update with no multi nor upsert but with specific WriteConcern there is no update signature without multi and upsert args,
            // so assume defaults
            result = wc == null ? dbCol.update(updateCriteria, objNew) : dbCol.update(updateCriteria, objNew, false, false, wc);
        } else {
            // we calculate the final boolean values so that if any of these parameters is null, it is resolved to false
            result = wc == null ? dbCol.update(updateCriteria, objNew, calculateBooleanValue(upsert), calculateBooleanValue(multi)) 
                    : dbCol.update(updateCriteria, objNew, calculateBooleanValue(upsert), calculateBooleanValue(multi), wc);
        }

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        // full-signature method update(DBObject, DBObject, boolean, boolean). However, the default behaviour may change in the future, 
        // so it's safer to be explicit at this level for full determinism
        if (multi == null && upsert == null) {
            // for update with no multi nor upsert but with specific WriteConcern there is no update signature without multi and upsert args,
            // so assume defaults
            result = wc == null ? dbCol.update(updateCriteria, objNew) : dbCol.update(updateCriteria, objNew, false, false, wc);
        } else {
            // we calculate the final boolean values so that if any of these parameters is null, it is resolved to false
            result = wc == null ? dbCol.update(updateCriteria, objNew, calculateBooleanValue(upsert), calculateBooleanValue(multi)) 
                    : dbCol.update(updateCriteria, objNew, calculateBooleanValue(upsert), calculateBooleanValue(multi), wc);
        }

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            // for update with no multi nor upsert but with specific WriteConcern there is no update signature without multi and upsert args,
            // so assume defaults
            result = wc == null ? dbCol.update(updateCriteria, objNew) : dbCol.update(updateCriteria, objNew, false, false, wc);
        } else {
            // we calculate the final boolean values so that if any of these parameters is null, it is resolved to false
            result = wc == null ? dbCol.update(updateCriteria, objNew, calculateBooleanValue(upsert), calculateBooleanValue(multi)) 
                    : dbCol.update(updateCriteria, objNew, calculateBooleanValue(upsert), calculateBooleanValue(multi), wc);
        }
        
        Message resultMessage = prepareResponseMessage(exchange, MongoDbOperation.update);
        // we always return the WriteResult, because whether the getLastError was called or not, the user will have the means to call it or

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            // so assume defaults
            result = wc == null ? dbCol.update(updateCriteria, objNew) : dbCol.update(updateCriteria, objNew, false, false, wc);
        } else {
            // we calculate the final boolean values so that if any of these parameters is null, it is resolved to false
            result = wc == null ? dbCol.update(updateCriteria, objNew, calculateBooleanValue(upsert), calculateBooleanValue(multi)) 
                    : dbCol.update(updateCriteria, objNew, calculateBooleanValue(upsert), calculateBooleanValue(multi), wc);
        }
        
        Message resultMessage = prepareResponseMessage(exchange, MongoDbOperation.update);
        // we always return the WriteResult, because whether the getLastError was called or not, the user will have the means to call it or 
        // obtain the cached CommandResult

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        for (DBObject cur : tweets) {
            cur.put("screen_name", screenName);
            massageTweetId(cur);
            massageTweet(cur);
            tweetsCollection.update(new BasicDBObject("_id", cur.get("_id")), cur, true, false);
        }


        System.out.println("Tweet count: " + tweetsCollection.count());


        client.close();

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            scores.remove(lowestScore);


            System.out.println("Scores: " + scores + ", lowestScore homework: " + lowestScore);


            studentsCollection.update(new BasicDBObject("_id", student.get("_id")), new BasicDBObject("$set", new BasicDBObject("scores", scores)));
        }
    }


}

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    protected void saveModelChanges(String objectID, ModelChanges<T> modelChanges) {
        Assert.isInstanceOf(MongoModelChanges.class, modelChanges);
        MongoModelChanges<T> mongoModelChanges = (MongoModelChanges<T>) modelChanges;


        DBCollection primaryCollection = getPrimaryCollection();
        primaryCollection.update(new QueryMongoDBObject().forID(objectID), mongoModelChanges.toDBObject(), false, false);
    }


    @Timed
    @ExceptionMetered
    public void delete(T object) {

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