Julian Reschke created OAK-7457:
-----------------------------------
Summary: "Covariant return type change detected" warnings with
java10
Key: OAK-7457
URL: https://issues.apache.org/jira/browse/OAK-7457
Project: Jackrabbit Oak
Issue Type: Improvement
Components: documentmk, segment-tar
Reporter: Julian Reschke
Assignee: Julian Reschke
Fix For: 1.10
We have quite a few warnings of type "Covariant return type change detected":
{noformat}
[INFO]
C:\projects\apache\oak\trunk\oak-store-document\src\main\java\org\apache\jackrabbit\oak\plugins\document\persistentCache\broadcast\TCPBroadcaster.java:327:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.flip() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.flip()
[INFO]
C:\projects\apache\oak\trunk\oak-store-document\src\main\java\org\apache\jackrabbit\oak\plugins\document\persistentCache\broadcast\UDPBroadcaster.java:135:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.limit(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.limit(int)
[INFO]
C:\projects\apache\oak\trunk\oak-store-document\src\main\java\org\apache\jackrabbit\oak\plugins\document\persistentCache\broadcast\UDPBroadcaster.java:138:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-store-document\src\main\java\org\apache\jackrabbit\oak\plugins\document\persistentCache\broadcast\TCPBroadcaster.java:226:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-store-document\src\main\java\org\apache\jackrabbit\oak\plugins\document\persistentCache\broadcast\InMemoryBroadcaster.java:35:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-store-document\src\main\java\org\apache\jackrabbit\oak\plugins\document\persistentCache\PersistentCache.java:519:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.limit(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.limit(int)
[INFO]
C:\projects\apache\oak\trunk\oak-store-document\src\main\java\org\apache\jackrabbit\oak\plugins\document\persistentCache\PersistentCache.java:522:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-store-document\src\main\java\org\apache\jackrabbit\oak\plugins\document\persistentCache\PersistentCache.java:535:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\data\SegmentDataV12.java:196:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\data\SegmentDataV12.java:197:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.limit(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.limit(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\data\SegmentDataUtils.java:57:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\data\SegmentDataUtils.java:58:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.limit(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.limit(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\index\IndexWriter.java:110:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\index\IndexLoaderV1.java:62:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.mark() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.mark()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\index\IndexLoaderV1.java:64:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.reset() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.reset()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\index\IndexLoaderV1.java:72:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.mark() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.mark()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\index\IndexLoaderV1.java:101:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.reset() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.reset()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\index\IndexLoaderV2.java:62:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.mark() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.mark()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\index\IndexLoaderV2.java:64:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.reset() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.reset()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\index\IndexLoaderV2.java:72:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.mark() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.mark()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\index\IndexLoaderV2.java:101:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.reset() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.reset()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\binaries\BinaryReferencesIndexLoader.java:71:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\binaries\BinaryReferencesIndexLoader.java:73:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.rewind() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.rewind()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\binaries\BinaryReferencesIndexLoaderV1.java:61:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.limit(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.limit(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\binaries\BinaryReferencesIndexLoaderV1.java:63:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\binaries\BinaryReferencesIndexLoaderV1.java:82:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.mark() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.mark()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\binaries\BinaryReferencesIndexLoaderV1.java:84:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.reset() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.reset()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\binaries\BinaryReferencesIndexLoaderV2.java:61:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.limit(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.limit(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\binaries\BinaryReferencesIndexLoaderV2.java:63:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\binaries\BinaryReferencesIndexLoaderV2.java:82:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.mark() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.mark()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\binaries\BinaryReferencesIndexLoaderV2.java:84:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.reset() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.reset()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\GraphLoader.java:78:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.mark() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.mark()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\GraphLoader.java:80:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.reset() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.reset()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\SegmentTarWriter.java:142:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.rewind() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.rewind()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\FileAccess.java:72:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\FileAccess.java:73:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.limit(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.limit(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\tar\SegmentTarManager.java:209:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\file\FileStore.java:489:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.rewind() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.rewind()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\memory\MemoryStore.java:118:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.rewind() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.rewind()
[INFO]
C:\projects\apache\oak\trunk\oak-segment-tar\src\main\java\org\apache\jackrabbit\oak\segment\SegmentStream.java:156:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.position(int) has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.position(int)
[INFO]
C:\projects\apache\oak\trunk\oak-segment-azure\src\main\java\org\apache\jackrabbit\oak\segment\azure\AzureUtilities.java:69:
Covariant return type change detected: java.nio.Buffer
java.nio.ByteBuffer.rewind() has been changed to java.nio.ByteBuffer
java.nio.ByteBuffer.rewind()
{noformat}
I believe these will cause problems if we compile with java 10 but run on an
earlier VM.
See also https://jira.mongodb.org/browse/JAVA-2559
--
This message was sent by Atlassian JIRA
(v7.6.3#76005)
