[LUCENE-785] RAMDirectory not Serializable

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.1
• Fix Version/s: 2.1
• Component/s: core/store
• Lucene Fields: New
• Assignee: Michael McCandless
• Reporter: Matthias Seidel
• Created: 26/Jan/07 13:50
• Updated: 28/Aug/22 11:34
• Resolved: 27/Jan/07 20:40

Description

The current implementation of RAMDirectory throws a NotSerializableException when trying to serialize, due to the inner class KeySet of HashMap not being serializable (god knows why)

java.io.NotSerializableException: java.util.HashMap$KeySet
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1081)

Caused by line 43:

private Set fileNames = fileMap.keySet();

EDIT:

while we're at it: same goes for inner class Values

java.io.NotSerializableException: java.util.HashMap$Values
at java.io.ObjectOutputStream.writeObject0(ObjectOutputStream.java:1081)

Collection files = fileMap.values();