Coverage Report - com.allanbank.mongodb.client.callback.ReplyCommandCallback
 
Classes in this File Line Coverage Branch Coverage Complexity
ReplyCommandCallback
100%
25/25
93%
15/16
3.5
 
 1  
 /*
 2  
  * #%L
 3  
  * ReplyCommandCallback.java - mongodb-async-driver - Allanbank Consulting, Inc.
 4  
  * %%
 5  
  * Copyright (C) 2011 - 2014 Allanbank Consulting, Inc.
 6  
  * %%
 7  
  * Licensed under the Apache License, Version 2.0 (the "License");
 8  
  * you may not use this file except in compliance with the License.
 9  
  * You may obtain a copy of the License at
 10  
  * 
 11  
  *      http://www.apache.org/licenses/LICENSE-2.0
 12  
  * 
 13  
  * Unless required by applicable law or agreed to in writing, software
 14  
  * distributed under the License is distributed on an "AS IS" BASIS,
 15  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 16  
  * See the License for the specific language governing permissions and
 17  
  * limitations under the License.
 18  
  * #L%
 19  
  */
 20  
 
 21  
 package com.allanbank.mongodb.client.callback;
 22  
 
 23  
 import java.util.List;
 24  
 
 25  
 import com.allanbank.mongodb.Callback;
 26  
 import com.allanbank.mongodb.MongoDbException;
 27  
 import com.allanbank.mongodb.bson.Document;
 28  
 import com.allanbank.mongodb.bson.Element;
 29  
 import com.allanbank.mongodb.client.message.Reply;
 30  
 import com.allanbank.mongodb.error.ReplyException;
 31  
 
 32  
 /**
 33  
  * Callback to expect and extract a single document from the reply.
 34  
  * 
 35  
  * @api.no This class is <b>NOT</b> part of the drivers API. This class may be
 36  
  *         mutated in incompatible ways between any two releases of the driver.
 37  
  * @copyright 2011-2013, Allanbank Consulting, Inc., All Rights Reserved
 38  
  */
 39  40
 public class ReplyCommandCallback extends AbstractReplyCallback<Document> {
 40  
 
 41  
     /**
 42  
      * Create a new ReplyDocumentCallback.
 43  
      * 
 44  
      * @param results
 45  
      *            The callback to notify of the reply document.
 46  
      */
 47  
     public ReplyCommandCallback(final Callback<Document> results) {
 48  52
         super(results);
 49  52
     }
 50  
 
 51  
     /**
 52  
      * {@inheritDoc}
 53  
      * <p>
 54  
      * Creates an exception if the {@link Reply} has less than or more than a
 55  
      * single reply document.
 56  
      * </p>
 57  
      * 
 58  
      * @param reply
 59  
      *            The raw reply.
 60  
      * @return The exception created.
 61  
      */
 62  
     @Override
 63  
     protected MongoDbException asError(final Reply reply) {
 64  42
         MongoDbException error = super.asError(reply);
 65  42
         if (error == null) {
 66  42
             final List<Document> results = reply.getResults();
 67  42
             if (results.size() != 1) {
 68  1
                 error = new ReplyException(reply,
 69  
                         "Should only be a single document in the reply.");
 70  
             }
 71  
         }
 72  42
         return error;
 73  
     }
 74  
 
 75  
     /**
 76  
      * {@inheritDoc}
 77  
      * <p>
 78  
      * Overridden to not throw an exception on a zero 'ok' value.
 79  
      * </p>
 80  
      * 
 81  
      * @param reply
 82  
      *            The raw reply.
 83  
      * @param knownError
 84  
      *            If true then the reply is assumed to be an error reply.
 85  
      * @return The exception created.
 86  
      */
 87  
     @Override
 88  
     protected MongoDbException asError(final Reply reply,
 89  
             final boolean knownError) {
 90  47
         final List<Document> results = reply.getResults();
 91  47
         if (results.size() == 1) {
 92  46
             final Document doc = results.get(0);
 93  46
             final Element okElem = doc.get("ok");
 94  46
             final Element errorNumberElem = doc.get("code");
 95  46
             Element errorMessageElem = null;
 96  46
             for (int i = 0; (errorMessageElem == null)
 97  500
                     && (i < ERROR_MESSAGE_FIELDS.size()); ++i) {
 98  227
                 errorMessageElem = doc.get(ERROR_MESSAGE_FIELDS.get(i));
 99  
             }
 100  
 
 101  46
             if ((okElem == null) && knownError) {
 102  3
                 return asError(reply, -1, toInt(errorNumberElem),
 103  
                         asString(errorMessageElem));
 104  
 
 105  
             }
 106  
         }
 107  44
         return null;
 108  
     }
 109  
 
 110  
     /**
 111  
      * {@inheritDoc}
 112  
      * <p>
 113  
      * Overridden to return the reply document.
 114  
      * </p>
 115  
      * 
 116  
      * @see AbstractReplyCallback#convert(Reply)
 117  
      */
 118  
     @Override
 119  
     protected Document convert(final Reply reply) throws MongoDbException {
 120  42
         final List<Document> results = reply.getResults();
 121  42
         if (results.size() == 1) {
 122  41
             return results.get(0);
 123  
         }
 124  
 
 125  1
         return null;
 126  
     }
 127  
 }