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3+ instances of prefix mapping to different namespaces causes NPE

Description

A null pointer exception can be forced in AbstractFederationConnection.getNamespacesInternal() if the same prefix occurs 3+ times in the various federation members, and maps to different namespaces at least twice while iterating through member namespace collections. See the attached source file for an example of this.

Environment

None

Status

Assignee

Dale W. Visser

Reporter

Dale W. Visser

Labels

Components

Fix versions

Affects versions

2.7.13

Priority

Major