Ignite Java .NET互操作性java.sql.Timestamp到System.DateTime

Question

我有这样的拓扑。 1服务器节点的java 1个客户端节点上运行的上达网络运行

我有具有在Java端的场

java.sql.Timestamp lastUpdated 

两个平台上定义的简单类型，

DateTime? LastUpdated { get; set; } 

在.net端

我可以加载对象到java节点和.net客户端节点没有任何问题。我也可以创建新的实例并将它们从java节点放到缓存中。但是，当我尝试从.net节点将一个新对象放到缓存中时，我得到以下异常（来自java侧日志）。请注意，如果我删除此日期字段或将其设置为null，那么我可以从.net一侧放入对象而不会出现问题。

任何想法？ 谢谢。

[ERROR] 2016-12-09 14:21:48.121 [sys-#24%null%] GridDhtAtomicCache - <D9Cache> Unexpected exception during cache update 
org.apache.ignite.binary.BinaryObjectException: Unexpected flag value [pos=33, expected=33, actual=103] 
    at org.apache.ignite.internal.binary.BinaryReaderExImpl.checkFlagNoHandles(BinaryReaderExImpl.java:1423) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.binary.BinaryReaderExImpl.readTimestamp(BinaryReaderExImpl.java:1075) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.binary.BinaryReaderExImpl.readTimestamp(BinaryReaderExImpl.java:1070) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.binary.BinaryFieldAccessor$DefaultFinalClassAccessor.readFixedType(BinaryFieldAccessor.java:722) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.binary.BinaryFieldAccessor$DefaultFinalClassAccessor.read(BinaryFieldAccessor.java:639) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.binary.BinaryClassDescriptor.read(BinaryClassDescriptor.java:776) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.binary.BinaryReaderExImpl.deserialize(BinaryReaderExImpl.java:1481) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.binary.BinaryObjectImpl.deserializeValue(BinaryObjectImpl.java:585) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.binary.BinaryObjectImpl.value(BinaryObjectImpl.java:142) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.CacheObjectContext.unwrapBinary(CacheObjectContext.java:272) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.CacheObjectContext.unwrapBinaryIfNeeded(CacheObjectContext.java:160) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.CacheObjectContext.unwrapBinaryIfNeeded(CacheObjectContext.java:147) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.GridCacheContext.unwrapBinaryIfNeeded(GridCacheContext.java:1752) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.store.GridCacheStoreManagerAdapter.put(GridCacheStoreManagerAdapter.java:565) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.GridCacheMapEntry.innerUpdate(GridCacheMapEntry.java:2425) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.updateSingle(GridDhtAtomicCache.java:2252) ~[ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.updateAllAsyncInternal0(GridDhtAtomicCache.java:1652) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.updateAllAsyncInternal(GridDhtAtomicCache.java:1490) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.processNearAtomicUpdateRequest(GridDhtAtomicCache.java:2950) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache.access$600(GridDhtAtomicCache.java:130) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache$5.apply(GridDhtAtomicCache.java:268) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.distributed.dht.atomic.GridDhtAtomicCache$5.apply(GridDhtAtomicCache.java:266) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.GridCacheIoManager.processMessage(GridCacheIoManager.java:748) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.GridCacheIoManager.onMessage0(GridCacheIoManager.java:353) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.GridCacheIoManager.handleMessage(GridCacheIoManager.java:277) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.GridCacheIoManager.access$000(GridCacheIoManager.java:88) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.processors.cache.GridCacheIoManager$1.onMessage(GridCacheIoManager.java:231) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.managers.communication.GridIoManager.invokeListener(GridIoManager.java:1238) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.managers.communication.GridIoManager.processRegularMessage0(GridIoManager.java:866) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.managers.communication.GridIoManager.access$1700(GridIoManager.java:106) [ignite-core-1.7.0.jar:1.7.0] 
    at org.apache.ignite.internal.managers.communication.GridIoManager$5.run(GridIoManager.java:829) [ignite-core-1.7.0.jar:1.7.0] 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [?:1.8.0_102] 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [?:1.8.0_102] 
    at java.lang.Thread.run(Thread.java:745) [?:1.8.0_102] 

Answer 1

.NET DateTime可以是本地和UTC; Java Timestamp只能是UTC。因此，Ignite.NET可以通过两种方式序列化DateTime：.NET风格（可以使用非UTC值，不适用于Java和SQL）和Timestamp（在非UTC值上引发异常，在Java中正常运行和SQL）。

简单的解决方法是用[QuerySqlField]标记字段以强制执行Timestamp序列化。

您也可以使用工具IBinarizable并使用IBinaryWriter.WriteTimestamp方法。

如果无法修改类以标记字段[QuerySqlField]或实施IBinarizable，请使用IBinarySerializer方法。

有关更多详细信息，请参阅https://apacheignite-net.readme.io/docs/platform-interoperability#type-compatibility。