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OSGi r4v4.2 (chap. 127.1.3) defines the JPA versions as:
JPA Packages Export Version Client Import Range Provider Imp. Range
----------- -------------------------- -------------------- -------------------------- ----------------------------
JPA 1.0 javax.persistence 1.0 [1.0,2.0) [1.0,1.1)
javax.persistence.spi 1.0 [1.0,2.0) [1.0,1.1)
JPA 2.0 javax.persistence 1.1 [1.1,2.0) [1.1,1.2)
javax.persistence.spi 1.1 [1.1,2.0) [1.1,1.2)
Compliant SPIs export as 1.1, so the import for javax.persistence should be [1.1.0,3.0.0) instead of [2.0.0,3.0.0).
In my case, DefaultTraversableResolver happens to find the 2.0 environment using reflection (since JPA2 is available in the classpath), but later fails with NoClassDefFoundError because of the wrong version import.
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