MongoDB BSON编解码器在编码对象时不被使用 [英] MongoDB BSON codec not being used while encoding object
本文介绍了MongoDB BSON编解码器在编码对象时不被使用的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
找不到类java.time.LocalDate的编解码器。
我已经为 LocalDate 对象。
我试图存储的对象 DutyBlock 具有这些成员变量： p>
public class DutyBlock {
private LocalDate startDate;
private LocalDate endDate; //包含
private int blockLength;
private double pointValue;
private ArrayList< Ra>分配;
}
我写了以下编解码器来编码 DutyBlock 数据库中的对象：
public class DutyBlockCodec implements Codec&DutyBlock> {
@Override
public void encode（BsonWriter writer，DutyBlock t，EncoderContext ec）{
Document document = new Document（）;
document.append（startDate，t.getStartDate（））;
document.append（endDate，t.getEndDate（））;
document.append（blockLength，t.getBlockLength（））;
document.append（pointValue，t.getPointValue（））;
document.append（assigned，t.getRasOnDuty（））;
writer.writeString（document.toJson（））; //第27行错误信息。
}
@Override
public Class&DutyBlock> getEncoderClass（）{
return DutyBlock.class;
}
@Override
public DutyBlock decode（BsonReader reader，DecoderContext dc）{
String json = reader.readString（）;
返回新的DutyBlock（Document.parse（json））;
}
}
由于MongoDB目前不支持 java.time.LocalDate class ，我已经编写了以下编解码器来对数据库中的 LocalDate 对象进行编码： / p>
public class LocalDateCodec implements Codec< LocalDate> {
@Override
public void encode（BsonWriter writer，LocalDate t，EncoderContext ec）{
writer.writeString（t.toString（））;
}
@Override
public Class< LocalDate> getEncoderClass（）{
return LocalDate.class;
}
@Override
public LocalDate decode（BsonReader reader，DecoderContext dc）{
String date = reader.readString（）;
return LocalDate.parse（date）;
}
}
我添加了两个 Codec （以及 Ra 类型中的一个）到 CodecRegistry MongoClient级别，同时实例化MongoClient。
public class DutyScheduleDB {
private MongoClient mongoClient;
private MongoDatabase db;
public DutyScheduleDB（）{
CodecRegistry codecRegistry =
CodecRegistries.fromRegistries（
CodecRegistries.fromCodecs（new LocalDateCodec（），new DutyBlockCodec（），new RaCodec ），
MongoClient.getDefaultCodecRegistry（））;
MongoClientOptions options = MongoClientOptions.builder（）
.codecRegistry（codecRegistry）.build（）;
mongoClient = new MongoClient（new ServerAddress（），options）;
db = mongoClient.getDatabase（DutySchedulerDB）;
}
。 （更多代码未显示）
。
。
}
我尝试存储一个 ArrayList DutyBlock 对象作为MongoDB数据库中 org.bson.Document 的一部分。
public void storeScheduledCalendar（String id，
String calendarName，
ArrayList&DutyBlock&cal; cal）{
/ /访问预定日历的收集。
MongoCollection collection = db.getCollection（ScheduledCalendars）;
//查询参数是uuid + calendarName。
文档doc = new Document（name，id + calendarName）;
doc.append（dutyBlocks，cal）;
//将文档插入到集合中。
collection.insertOne（doc）; //行59在错误信息。
}
但是，我遇到这个错误信息：
线程main中的异常org.bson.codecs.configuration.CodecConfigurationException：找不到类java.time.LocalDate的编解码器。
在org.bson.codecs.configuration.CodecCache.getOrThrow（CodecCache.java:46）
在org.bson.codecs.configuration.ProvidersCodecRegistry.get（ProvidersCodecRegistry.java:63）
在org.bson.codecs.configuration.ProvidersCodecRegistry.get（ProvidersCodecRegistry.java:37）
在org.bson.codecs.DocumentCodec.writeValue（DocumentCodec.java:174）
在org.bson.codecs .documentCodec.writeMap（DocumentCodec.java:189）
在org.bson.codecs.DocumentCodec.encode（DocumentCodec.java:131）
在org.bson.codecs.DocumentCodec.encode（DocumentCodec.java ：$）
在org.bson.Document.toJson（Document.java:294）
在org.bson.Document.toJson（Document.java:268）
在org.bson。 Document.toJson（Document.java:255）
在SchedulingHeuristic.DutyBlockCodec.encode（DutyBlockCodec.java:27）
在SchedulingHeuristic.DutyBlockCodec.encode（DutyBlockCodec.java:16）
在org .bson.codecs.EncoderContext.encodeWithChildContext（EncoderContext.java:91）
在org.bson.codecs.DocumentCodec.writeValue（Docume ntCodec.java:175）
在org.bson.codecs.DocumentCodec.writeIterable（DocumentCodec.java:197）
在org.bson.codecs.DocumentCodec.writeValue（DocumentCodec.java:170）
在org.bson.codecs.DocumentCodec.writeMap（DocumentCodec.java:189）
在org.bson.codecs.DocumentCodec.encode（DocumentCodec.java:131）
在org.bson.codecs .cn文件编号：29）
在com.mongodb.connection.InsertCommandMessage.writeTheWrites（InsertCommandMessage.java:99）
在com.mongodb.connection.InsertCommandMessage.writeTheWrites（InsertCommandMessage.java:43）
在com.mongodb.connection.BaseWriteCommandMessage.encodeMessageBody（BaseWriteCommandMessage.java:112）
在com.mongodb.connection.BaseWriteCommandMessage.encodeMessageBody（BaseWriteCommandMessage.java:35）
在com.mongodb.connection.Request Message.encode（RequestMessage.java:132）
在com.mongodb.connection.BaseWriteCommandMessage.encode（BaseWriteCommandMessage.java:89）
在com.mongodb.connection.WriteCommandProtocol.sendMessage（WriteCommandProtocol.java： 170）
在com.mongodb.connection.WriteCommandProtocol.execute（WriteCommandProtocol.java:73）
在com.mongodb.connection.InsertCommandProtocol.execute（InsertCommandProtocol.java:66）
在com .mongodb.connection.InsertCommandProtocol.execute（InsertCommandProtocol.java:37）
在com.mongodb.connection.DefaultServer $ DefaultServerProtocolExecutor.execute（DefaultServer.java:155）
在com.mongodb.connection.DefaultServerConnection在.com中java：416）
在com.mongodb.operation.MixedBulkWriteOperation $运行$ R unExecutor.execute（MixedBulkWriteOperation.java:604）
在com.mongodb.operation.MixedBulkWriteOperation $ Run.execute（MixedBulkWriteOperation.java:363）
在com.mongodb.operation.MixedBulkWriteOperation $ 1.call（MixedBulkWriteOperation .java：148）
at com.mongodb.operation.MixedBulkWriteOperation $ 1.call（MixedBulkWriteOperation.java:141）
at com.mongodb.operation.OperationHelper.withConnectionSource（OperationHelper.java:186）
at com.mongodb.operation.OperationHelper.withConnection（OperationHelper.java:177）
at com.mongodb.operation.MixedBulkWriteOperation.execute（MixedBulkWriteOperation.java:141）
at com.mongodb.operation .MixedBulkWriteOperation.execute（MixedBulkWriteOperation.java:72）
在com.mongodb.Mongo.execute（Mongo.java:747）
在com.mongodb.Mongo $ 2.execute（Mongo.java:730）
在com.mongodb.MongoCollectionImpl.executeSingleWriteRequest（MongoCollectionImpl.java:482）
在com.mongodb.MongoCollectionImpl.insertOne（MongoCollectionImpl.java:277）
at （DutyScheduleDB.java:10）
b 虽然尝试编码 DutyBlock 对象时，似乎没有使用我的 LocalDate 的编解码器，我已经验证了我试图存储 org.bson.Document 的集合确实包含 LocalDateCodec 通过
System.out.println（collection.getCodecRegistry（）。get（LocalDate.class））;
任何人都可以提供一些洞察为什么会发生这种情况？
解决方案经过几天的研究，我已经找出了一个解决方案。
DutyBlockCodec 取决于 LocalDateCodec （我创建的）以进行编码/解码。通过将两个编解码器添加到同一个编解码器注册表中，这种依赖性不能满足要求。解决方案是传递一个包含 DutyBlockCodec 依赖的编解码器的 CodecRegistry 对象（例如一个 CodecRegistry 在其中包含 LocalDateCodec ）到 DutyBlockCodec 的构造函数，它被存储作为成员变量。为了使用 LocalDateCodec 进行编码，我使用 EncoderContext.encodeWithChildContext（）方法，传入编解码器，作家和要编码的元素。另外，我写个别字段，而不是写一个文档作为一个 String （如我的原始代码）。因此， DutyBlock 编解码器最终看起来像这样：
public class DutyBlockCodec实现编解码器< DutyBlock> CodecRegistry codecRegistry {
private final
public DutyBlockCodec（final CodecRegistry codecRegistry）{
this.codecRegistry = codecRegistry;
}
@Override
public void encode（BsonWriter writer，DutyBlock t，EncoderContext ec）{
writer.writeStartDocument（）;
Codec dateCodec = codecRegistry.get（LocalDate.class）;
writer.writeName（startDate）;
ec.encodeWithChildContext（dateCodec，writer，t.getStartDate（））;
writer.writeName（endDate）;
ec.encodeWithChildContext（dateCodec，writer，t.getEndDate（））;
writer.writeName（blockLength）;
writer.writeInt32（t.getBlockLength（））;
writer.writeName（pointValue）;
writer.writeDouble（t.getPointValue（））;
//写入RA的ArrayList
writer.writeName（assigned）;
writer.writeStartArray（）; （Ra ra：t.getRasOnDuty（））
{
Codec raCodec = codecRegistry.get（Ra.class）;
ec.encodeWithChildContext（raCodec，writer，ra）;
}
writer.writeEndArray（）;
writer.writeEndDocument（）;
}
@Override
public Class&DutyBlock> getEncoderClass（）{
return DutyBlock.class;
}
@Override
public DutyBlock decode（BsonReader reader，DecoderContext dc）{
reader.readStartDocument（）;
编解码器< LocalDate> dateCodec = codecRegistry.get（LocalDate.class）;
reader.readName（）;
LocalDate startDate = dateCodec.decode（reader，dc）;
reader.readName（）;
LocalDate endDate = dateCodec.decode（reader，dc）;
reader.readName（）;
int blockLength = reader.readInt32（）;
reader.readName（）;
double pointValue = reader.readDouble（）;
//读取RA的ArrayList
reader.readName（）;
Codec< Ra> raCodec = codecRegistry.get（Ra.class）;
ArrayList< Ra> rasOnDuty = new ArrayList<（）;
reader.readStartArray（）;
while（reader.readBsonType（）！= BsonType.END_OF_DOCUMENT）{
rasOnDuty.add（raCodec.decode（reader，dc））;
}
reader.readEndArray（）;
reader.readEndDocument（）;
返回新的DutyBlock（startDate，endDate，blockLength，pointValue，rasOnDuty）;
}
}
DutyBlockCodec 取决于另一个编解码器，因此需要在其构造函数中传递一个 CodecRegistry 。虽然我相信可以使用 LocalDateCodec 创建一个 CodecRegistry ，然后将其作为参数传递给 DutyBlockCodec 的构造函数，然后创建另一个 CodecRegistry ，其中包含 LocalDateCodec 和 DutyBlockCodec ，这很令人困惑，MongoDB提供了一个功能， CodecProvider 来促进这个过程。
使用 CodecProvider 界面，我写了一个 DutyBlockCodecProvider
public class DutyBlockCodecProvider implements CodecProvider {
@Override
public< T>编解码器< T> get（Class< T> type，CodecRegistry cr）{
if（type == DutyBlock.class）{
return（Codec ）new DutyBlockCodec（cr）;
}
返回null;
}
}
我添加了这些 CodecProviders 到MongoDB客户端使用 CodecRegistries.fromProviders（）方法。
CodecRegistry codecRegistry = CodecRegistries.fromRegistries（
CodecRegistries.fromCodecs（new LocalDateCodec（）），
CodecRegistries.fromProviders（
new RaCodecProvider（），
new DutyBlockCodecProvider （），
new ScheduledDutyCodecProvider（）），
MongoClient.getDefaultCodecRegistry（））;
MongoClientOptions options = MongoClientOptions.builder（）
.codecRegistry（codecRegistry）.build（）;
mongoClient = new MongoClient（new ServerAddress（），options）;
db = mongoClient.getDatabase（DutySchedulerDB）;
我可以在 https://github.com/desrepair/DutyScheduler
我可以回答人们可能遇到的任何问题。
I'm attempting to store an object in a MongoDB database (using MongoDB 3.0.2) and am getting a CodecConfigurationException when attempting to encode the object with error message
Can't find a codec for class java.time.LocalDate.
I have written and included a codec for the LocalDate objects. Details follow.
The object, DutyBlock, that I'm attempting to store has these member variables:
public class DutyBlock {
private LocalDate startDate;
private LocalDate endDate; //Inclusive
private int blockLength;
private double pointValue;
private ArrayList<Ra> assigned;
}
I wrote the following codec to encode the DutyBlock objects within the database:
public class DutyBlockCodec implements Codec<DutyBlock> {
@Override
public void encode(BsonWriter writer, DutyBlock t, EncoderContext ec) {
Document document = new Document();
document.append("startDate", t.getStartDate());
document.append("endDate", t.getEndDate());
document.append("blockLength", t.getBlockLength());
document.append("pointValue", t.getPointValue());
document.append("assigned", t.getRasOnDuty());
writer.writeString(document.toJson()); //Line 27 in the error message.
}
@Override
public Class<DutyBlock> getEncoderClass() {
return DutyBlock.class;
}
@Override
public DutyBlock decode(BsonReader reader, DecoderContext dc) {
String json = reader.readString();
return new DutyBlock(Document.parse(json));
}
}
Since MongoDB currently does not support the java.time.LocalDate class, I've written the following codec to encode the LocalDate objects within the database:
public class LocalDateCodec implements Codec<LocalDate> {
@Override
public void encode(BsonWriter writer, LocalDate t, EncoderContext ec) {
writer.writeString(t.toString());
}
@Override
public Class<LocalDate> getEncoderClass() {
return LocalDate.class;
}
@Override
public LocalDate decode(BsonReader reader, DecoderContext dc) {
String date = reader.readString();
return LocalDate.parse(date);
}
}
I've added the two Codec's (along with one for the Ra type) to the CodecRegistry at the MongoClient level while instantiating the MongoClient.
public class DutyScheduleDB {
private MongoClient mongoClient;
private MongoDatabase db;
public DutyScheduleDB() {
CodecRegistry codecRegistry =
CodecRegistries.fromRegistries(
CodecRegistries.fromCodecs(new LocalDateCodec(), new DutyBlockCodec(), new RaCodec()),
MongoClient.getDefaultCodecRegistry());
MongoClientOptions options = MongoClientOptions.builder()
.codecRegistry(codecRegistry).build();
mongoClient = new MongoClient(new ServerAddress(), options);
db = mongoClient.getDatabase("DutySchedulerDB");
}
. (More code not shown)
.
.
}
I attempt to store an ArrayList of DutyBlock objects as part of a org.bson.Document within the MongoDB database.
public void storeScheduledCalendar(String id,
String calendarName,
ArrayList<DutyBlock> cal) {
//Access collection of scheduled calendars.
MongoCollection collection = db.getCollection("ScheduledCalendars");
//Query parameter is uuid + calendarName.
Document doc = new Document("name", id + calendarName);
doc.append("dutyBlocks", cal);
//Insert doc to collection.
collection.insertOne(doc); //Line 59 in the error message.
}
However, I'm running into this error message:
Exception in thread "main" org.bson.codecs.configuration.CodecConfigurationException: Can't find a codec for class java.time.LocalDate.
at org.bson.codecs.configuration.CodecCache.getOrThrow(CodecCache.java:46)
at org.bson.codecs.configuration.ProvidersCodecRegistry.get(ProvidersCodecRegistry.java:63)
at org.bson.codecs.configuration.ProvidersCodecRegistry.get(ProvidersCodecRegistry.java:37)
at org.bson.codecs.DocumentCodec.writeValue(DocumentCodec.java:174)
at org.bson.codecs.DocumentCodec.writeMap(DocumentCodec.java:189)
at org.bson.codecs.DocumentCodec.encode(DocumentCodec.java:131)
at org.bson.codecs.DocumentCodec.encode(DocumentCodec.java:45)
at org.bson.Document.toJson(Document.java:294)
at org.bson.Document.toJson(Document.java:268)
at org.bson.Document.toJson(Document.java:255)
at SchedulingHeuristic.DutyBlockCodec.encode(DutyBlockCodec.java:27)
at SchedulingHeuristic.DutyBlockCodec.encode(DutyBlockCodec.java:16)
at org.bson.codecs.EncoderContext.encodeWithChildContext(EncoderContext.java:91)
at org.bson.codecs.DocumentCodec.writeValue(DocumentCodec.java:175)
at org.bson.codecs.DocumentCodec.writeIterable(DocumentCodec.java:197)
at org.bson.codecs.DocumentCodec.writeValue(DocumentCodec.java:170)
at org.bson.codecs.DocumentCodec.writeMap(DocumentCodec.java:189)
at org.bson.codecs.DocumentCodec.encode(DocumentCodec.java:131)
at org.bson.codecs.DocumentCodec.encode(DocumentCodec.java:45)
at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:63)
at org.bson.codecs.BsonDocumentWrapperCodec.encode(BsonDocumentWrapperCodec.java:29)
at com.mongodb.connection.InsertCommandMessage.writeTheWrites(InsertCommandMessage.java:99)
at com.mongodb.connection.InsertCommandMessage.writeTheWrites(InsertCommandMessage.java:43)
at com.mongodb.connection.BaseWriteCommandMessage.encodeMessageBody(BaseWriteCommandMessage.java:112)
at com.mongodb.connection.BaseWriteCommandMessage.encodeMessageBody(BaseWriteCommandMessage.java:35)
at com.mongodb.connection.RequestMessage.encode(RequestMessage.java:132)
at com.mongodb.connection.BaseWriteCommandMessage.encode(BaseWriteCommandMessage.java:89)
at com.mongodb.connection.WriteCommandProtocol.sendMessage(WriteCommandProtocol.java:170)
at com.mongodb.connection.WriteCommandProtocol.execute(WriteCommandProtocol.java:73)
at com.mongodb.connection.InsertCommandProtocol.execute(InsertCommandProtocol.java:66)
at com.mongodb.connection.InsertCommandProtocol.execute(InsertCommandProtocol.java:37)
at com.mongodb.connection.DefaultServer$DefaultServerProtocolExecutor.execute(DefaultServer.java:155)
at com.mongodb.connection.DefaultServerConnection.executeProtocol(DefaultServerConnection.java:219)
at com.mongodb.connection.DefaultServerConnection.insertCommand(DefaultServerConnection.java:108)
at com.mongodb.operation.MixedBulkWriteOperation$Run$2.executeWriteCommandProtocol(MixedBulkWriteOperation.java:416)
at com.mongodb.operation.MixedBulkWriteOperation$Run$RunExecutor.execute(MixedBulkWriteOperation.java:604)
at com.mongodb.operation.MixedBulkWriteOperation$Run.execute(MixedBulkWriteOperation.java:363)
at com.mongodb.operation.MixedBulkWriteOperation$1.call(MixedBulkWriteOperation.java:148)
at com.mongodb.operation.MixedBulkWriteOperation$1.call(MixedBulkWriteOperation.java:141)
at com.mongodb.operation.OperationHelper.withConnectionSource(OperationHelper.java:186)
at com.mongodb.operation.OperationHelper.withConnection(OperationHelper.java:177)
at com.mongodb.operation.MixedBulkWriteOperation.execute(MixedBulkWriteOperation.java:141)
at com.mongodb.operation.MixedBulkWriteOperation.execute(MixedBulkWriteOperation.java:72)
at com.mongodb.Mongo.execute(Mongo.java:747)
at com.mongodb.Mongo$2.execute(Mongo.java:730)
at com.mongodb.MongoCollectionImpl.executeSingleWriteRequest(MongoCollectionImpl.java:482)
at com.mongodb.MongoCollectionImpl.insertOne(MongoCollectionImpl.java:277)
at DutyScheduleDB.storeScheduledCalendar(DutyScheduleDB.java:59)
at DutyScheduleDB.main(DutyScheduleDB.java:106)
It seems that my codec for LocalDate isn't being used when attempting to encode DutyBlock objects, though I've verified that the collection that I am attempting to store the org.bson.Document in does indeed contain the LocalDateCodec via a
System.out.println(collection.getCodecRegistry().get(LocalDate.class));
Can anyone can provide some insight on why this is happening?
解决方案
After several days of research, I've figured out a solution.
The DutyBlockCodec depends on the LocalDateCodec (which I created) in order to encode/decode. This dependency isn't satisfied just by adding the two codecs into the same codec registry. The solution is to pass a CodecRegistry object containing the codecs that DutyBlockCodec depends on (e.g. a CodecRegistry containing within it the LocalDateCodec) to the DutyBlockCodec's constructor, which is stored as a member variable. In order to use the LocalDateCodec to encode, I use the EncoderContext.encodeWithChildContext() method, passing in the codec, writer, and element to encode. Additionally, I write individual fields rather than writing a Document as a String (as in my original code). Thus the DutyBlock codec ends up looking like this:
public class DutyBlockCodec implements Codec<DutyBlock> {
private final CodecRegistry codecRegistry;
public DutyBlockCodec(final CodecRegistry codecRegistry) {
this.codecRegistry = codecRegistry;
}
@Override
public void encode(BsonWriter writer, DutyBlock t, EncoderContext ec) {
writer.writeStartDocument();
Codec dateCodec = codecRegistry.get(LocalDate.class);
writer.writeName("startDate");
ec.encodeWithChildContext(dateCodec, writer, t.getStartDate());
writer.writeName("endDate");
ec.encodeWithChildContext(dateCodec, writer, t.getEndDate());
writer.writeName("blockLength");
writer.writeInt32(t.getBlockLength());
writer.writeName("pointValue");
writer.writeDouble(t.getPointValue());
//Writing ArrayList of RAs
writer.writeName("assigned");
writer.writeStartArray();
for (Ra ra : t.getRasOnDuty()) {
Codec raCodec = codecRegistry.get(Ra.class);
ec.encodeWithChildContext(raCodec, writer, ra);
}
writer.writeEndArray();
writer.writeEndDocument();
}
@Override
public Class<DutyBlock> getEncoderClass() {
return DutyBlock.class;
}
@Override
public DutyBlock decode(BsonReader reader, DecoderContext dc) {
reader.readStartDocument();
Codec<LocalDate> dateCodec = codecRegistry.get(LocalDate.class);
reader.readName();
LocalDate startDate = dateCodec.decode(reader, dc);
reader.readName();
LocalDate endDate = dateCodec.decode(reader, dc);
reader.readName();
int blockLength = reader.readInt32();
reader.readName();
double pointValue = reader.readDouble();
//Reading ArrayList of RAs
reader.readName();
Codec<Ra> raCodec = codecRegistry.get(Ra.class);
ArrayList<Ra> rasOnDuty = new ArrayList<>();
reader.readStartArray();
while (reader.readBsonType() != BsonType.END_OF_DOCUMENT) {
rasOnDuty.add(raCodec.decode(reader, dc));
}
reader.readEndArray();
reader.readEndDocument();
return new DutyBlock(startDate, endDate, blockLength, pointValue, rasOnDuty);
}
}
DutyBlockCodec depends on another codec, and so requires a CodecRegistry to be passed in on its constructor. While I believe it is possible to create a CodecRegistry with the LocalDateCodec, then pass this as an argument to DutyBlockCodec's constructor, then create another CodecRegistry containing both LocalDateCodec and DutyBlockCodec, this is rather confusing, and MongoDB provides a functionality, the CodecProvider to facilitate this process.
Using the CodecProvider interface, I wrote a DutyBlockCodecProvider
public class DutyBlockCodecProvider implements CodecProvider {
@Override
public <T> Codec<T> get(Class<T> type, CodecRegistry cr) {
if (type == DutyBlock.class) {
return (Codec<T>) new DutyBlockCodec(cr);
}
return null;
}
}
I added these CodecProviders to the MongoDB Client using the CodecRegistries.fromProviders() method.
CodecRegistry codecRegistry = CodecRegistries.fromRegistries(
CodecRegistries.fromCodecs(new LocalDateCodec()),
CodecRegistries.fromProviders(
new RaCodecProvider(),
new DutyBlockCodecProvider(),
new ScheduledDutyCodecProvider()),
MongoClient.getDefaultCodecRegistry());
MongoClientOptions options = MongoClientOptions.builder()
.codecRegistry(codecRegistry).build();
mongoClient = new MongoClient(new ServerAddress(), options);
db = mongoClient.getDatabase("DutySchedulerDB");
My source code for this project can be found at https://github.com/desrepair/DutyScheduler I'm open to answering any questions people may have.
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