Поймать в Java исключение, которое не создается в соответствии с сигнатурой [закрыто] ⇐ JAVA

[Anonymous]

Я пытаюсь перехватить исключение, которое не может быть создано в соответствии с сигнатурой метода.
try {
final TypedQuery query = ...
return query.getSingleResult();
} catch (PessimisticLockException | LockTimeoutException ex) {
return null;
} catch (final Throwable t) {
LOGGER.error("Error of type while locking '{}': {}", t.getClass().getCanonicalName(), t.getMessage());
return null;
}

Согласно stacktrace org.postgresql.util.PSQLException, но согласно сигнатуре это исключение не разрешено.
Кроме того, ветвь Catcth (Throwable t) не выполнено.
Caused by: org.postgresql.util.PSQLException: ERROR: could not obtain lock on row in relation "rsa"
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2733)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:2420)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:372)
at org.postgresql.jdbc.PgStatement.executeInternal(PgStatement.java:517)
at org.postgresql.jdbc.PgStatement.execute(PgStatement.java:434)
at org.postgresql.jdbc.PgPreparedStatement.executeWithFlags(PgPreparedStatement.java:194)
at org.postgresql.jdbc.PgPreparedStatement.executeQuery(PgPreparedStatement.java:137)
at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeQuery(ProxyPreparedStatement.java:52)
at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeQuery(HikariProxyPreparedStatement.java)
at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:57)
at org.hibernate.loader.Loader.getResultSet(Loader.java:2322)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:2075)
at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:2037)
at org.hibernate.loader.Loader.doQuery(Loader.java:956)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:357)
at org.hibernate.loader.Loader.doList(Loader.java:2868)
at org.hibernate.loader.Loader.doList(Loader.java:2850)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2682)
at org.hibernate.loader.Loader.list(Loader.java:2677)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:540)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:400)
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:218)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1459)
at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1649)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1617)
at org.hibernate.query.internal.AbstractProducedQuery.getSingleResult(AbstractProducedQuery.java:1665)
at xxx.repository.impl.RSARepositoryImpl.findAndLock(RSARepositoryImpl.java


Подробнее здесь: https://stackoverflow.com/questions/789 ... -signature