Examples of com.mongodb.WriteResult

com.mongodb.WriteResult
This class lets you access the results of the previous write. if you have STRICT mode on, this just stores the result of that getLastError call if you don't, then this will actually do the getlasterror call. if another operation has been done on this connection in the interim, calls will fail

        assertEquals(0, testCollection.count());
        
        // test with object first
        Object result = template.requestBodyAndHeader("direct:noWriteConcern", "{\"scientist\":\"newton\"}", MongoDbConstants.WRITECONCERN, WriteConcern.SAFE);
        assertTrue("Result is not of type WriteResult", result instanceof WriteResult);
        WriteResult wr = (WriteResult) result;
        // should not be null because with WriteConcern.SAFE, getLastError was called implicitly by the driver
        assertNotNull(wr.getCachedLastError());
        CommandResult cr = wr.getLastError();
        assertTrue(cr.ok());
        
        // same behaviour should be reproduced with String 'SAFE'
        result = template.requestBodyAndHeader("direct:noWriteConcern", "{\"scientist\":\"newton\"}", MongoDbConstants.WRITECONCERN, "SAFE");
        assertTrue("Result is not of type WriteResult", result instanceof WriteResult);
        wr = (WriteResult) result;
        // should not be null because with WriteConcern.SAFE, getLastError was called implicitly by the driver
        assertNotNull(wr.getCachedLastError());
        cr = wr.getLastError();
        assertTrue(cr.ok());
    }

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    @Override
    public Boolean execute() throws Exception {
        DBCollection nodeCollection = mongoConnection.getNodeCollection();
        DBObject[] temp = nodeMongos.toArray(new DBObject[nodeMongos.size()]);
        WriteResult writeResult = nodeCollection.insert(temp, WriteConcern.SAFE);
        if ((writeResult != null) && (writeResult.getError() != null)) {
            throw new Exception(String.format("Insertion wasn't successful: %s", writeResult));
        }


        return Boolean.TRUE;
    }

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    }


    @Override
    public Boolean execute() throws Exception {
        DBCollection commitCollection = mongoConnection.getCommitCollection();
        WriteResult writeResult = commitCollection.insert(commitMongo);
        if (writeResult.getError() != null) {
            throw new Exception(String.format("Insertion wasn't successful: %s", writeResult));
        }


        return Boolean.TRUE;
    }

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    private void markAsFailed() throws Exception {
        DBCollection commitCollection = mongoConnection.getCommitCollection();
        DBObject query = QueryBuilder.start("_id").is(commitMongo.getObjectId("_id")).get();
        DBObject update = new BasicDBObject("$set", new BasicDBObject(CommitMongo.KEY_FAILED, Boolean.TRUE));
        WriteResult writeResult = commitCollection.update(query, update);
        if (writeResult.getError() != null) {
            throw new Exception(String.format("Update wasn't successful: %s", writeResult)); // TODO now what?
        }
    }

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        BasicDBObject key = new BasicDBObject("id","1234");
        BasicDBObject sets = new BasicDBObject("name","value");
        BasicDBObject upsert=new BasicDBObject("$set",sets);
        
        WriteResult result =coll.update(key,upsert,true,false);
        
        System.err.println(result.getLastError());
        
        
        while (coll.count()>0)
        {
            DBObject docZ = coll.findOne();

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    @Test
    public void testRemoveReturnsModifiedDocumentCount() {
        collection.insert(json("{}"));
        collection.insert(json("{}"));


        WriteResult result = collection.remove(json("{}"));
        assertThat(result.getN()).isEqualTo(2);


        result = collection.remove(json("{}"));
        assertThat(result.getN()).isEqualTo(0);
    }

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        BasicDBObject newObject = json("_id: 1");
        newObject.put("foo", "bar");


        collection.insert(object);
        WriteResult result = collection.update(object, newObject);
        assertThat(result.getN()).isEqualTo(1);
        assertThat(result.isUpdateOfExisting()).isTrue();
        assertThat(result.getUpsertedId()).isNull();
        assertThat(collection.findOne(object)).isEqualTo(newObject);
    }

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    }


    @Test
    public void testUpdateNothing() throws Exception {
        BasicDBObject object = json("_id: 1");
        WriteResult result = collection.update(object, object);
        assertThat(result.getN()).isEqualTo(0);
        assertThat(result.getUpsertedId()).isNull();
    }

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    @Test
    public void testUpdateMulti() throws Exception {
        collection.insert(json("a: 1"));
        collection.insert(json("a: 1"));
        WriteResult result = collection.update(json("a: 1"), json("$set: {b: 2}"));


        assertThat(result.getN()).isEqualTo(1);
        assertThat(result.isUpdateOfExisting()).isTrue();


        assertThat(collection.find(new BasicDBObject("b", 2)).count()).isEqualTo(1);


        result = collection.update(json("a: 1"), json("$set: {b: 3}"), false, true);
        assertThat(result.getN()).isEqualTo(2);
        assertThat(result.isUpdateOfExisting()).isTrue();
        assertThat(collection.find(new BasicDBObject("b", 2)).count()).isEqualTo(0);
        assertThat(collection.find(new BasicDBObject("b", 3)).count()).isEqualTo(2);
    }

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    }


    @Test
    public void testUpdateWithIdInMultiReturnModifiedDocumentCount() {
        collection.insert(json("_id: 1"), json("_id: 2"));
        WriteResult result = collection.update(json("_id: {$in:[1,2]}"), json("$set:{n:1}"), false, true);
        assertThat(result.getN()).isEqualTo(2);
    }

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