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| == JDO .v. JPA : APIanchor:JDO_.v._JPA_:_API[] |
| |
| The two persistence standards in Java have very similar API's on the |
| face of it. Here we give a comparison of the method calls and their |
| equivalent in the other API. |
| |
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| |=== |
| |Operation |JDO |JPA |
| |Persist Object |pm.makePersistent() |em.persist |
| |Update Object |pm.makePersistent() |em.merge() |
| |Remove Object |pm.deletePersistent() |em.remove() |
| |Retrieve Object |pm.getObjectById() + |
| pm.getExtent() |em.find() |
| |Refresh Object |pm.refresh() |em.refresh() |
| |Detach single Object |pm.detachCopy() |em.detach() |
| |Flush changes |pm.flush() |em.flush() |
| |Access transaction |pm.currentTransaction() |em.getTransaction() |
| |New Query |pm.newQuery() |em.createQuery() |
| |New Named Query |pm.newNamedQuery() |em.createNamedQuery() |
| |New SQL Query |pm.newQuery() |em.createNativeQuery() |
| |=== |
| |
