Java tutorial
/** * Copyright (C) 2010 Michael Mosmann <michael@mosmann.de> * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package de.flapdoodle.mongoom.datastore; import java.util.logging.Logger; import com.mongodb.CommandResult; import com.mongodb.DB; import de.flapdoodle.mongoom.exceptions.ObjectMapperException; import de.flapdoodle.mongoom.exceptions.UpdateFailedException; import de.flapdoodle.mongoom.logging.LogConfig; public final class Errors { static final Logger _logger = LogConfig.getLogger(Errors.class); private Errors() { } public static void checkError(DB db, Operation operation) { CommandResult lastError = db.getLastError(); if (lastError.get("err") != null) { _logger.severe(lastError.get("err").toString()); // throw lastError.getException(); throw new ObjectMapperException(lastError.get("err").toString()); } switch (operation) { case Update: if (lastError.getInt("updatedExisting", 0) == 0) { throw new UpdateFailedException(); } break; case Delete: if (lastError.getInt("n", 0) == 0) { throw new UpdateFailedException(); } break; } } }