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ENT-5237: Remove DISTINCT (backport)

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This commit is contained in:
Ryan Fowler 2020-05-04 15:02:33 +01:00
parent ebdd40049c
commit 55797612b2
1 changed files with 2 additions and 1 deletions
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node/src/main/kotlin/net/corda/node/services/network/PersistentNetworkMapCache.kt
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@ -323,9 +323,10 @@ open class PersistentNetworkMapCache(cacheFactory: NamedCacheFactory,
private fun queryIdentityByLegalName(session: Session, name: CordaX500Name): PartyAndCertificate? {
val query = session.createQuery(
// We do the JOIN here to restrict results to those present in the network map
"SELECT DISTINCT l FROM ${NodeInfoSchemaV1.PersistentNodeInfo::class.java.name} n INNER JOIN n.legalIdentitiesAndCerts l WHERE l.name = :name",
"SELECT l FROM ${NodeInfoSchemaV1.PersistentNodeInfo::class.java.name} n INNER JOIN n.legalIdentitiesAndCerts l WHERE l.name = :name",
NodeInfoSchemaV1.DBPartyAndCertificate::class.java)
query.setParameter("name", name.toString())
query.maxResults = 1 // instead of DISTINCT in the query, DISTINCT is not supported in Oracle when one of the columns is BLOB
val candidates = query.resultList.map { it.toLegalIdentityAndCert() }
// The map is restricted to holding a single identity for any X.500 name, so firstOrNull() is correct here.
return candidates.firstOrNull()