35 lines
2.1 KiB
Plaintext
Executable File
35 lines
2.1 KiB
Plaintext
Executable File
# Two real failures hit while wiring up Derby 10.16.1.1 against Hibernate ORM 7.4.5.Final.
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# Both captured verbatim from actual test/debug runs in this sandbox.
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## Failure 1: dialect auto-detection refuses to guess for Derby
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# (hibernate.dialect NOT set -- relying on JDBC metadata auto-detection, which works fine for
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# both H2 and HSQLDB in this same test suite)
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org.hibernate.HibernateException: Unable to determine Dialect for Apache Derby 10.16 (please set 'hibernate.dialect' or register a Dialect resolver)
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at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:202)
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at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:86)
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at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator$1.execute(JdbcEnvironmentInitiator.java:398)
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# Note: the JDBC connection itself succeeded (product name/version WAS read: "Apache Derby
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# 10.16") -- this is not a connectivity problem, it's Hibernate's dialect resolver chain simply
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# not recognizing that product/version pair anymore.
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## Failure 2: the "obvious" fix (set hibernate.dialect explicitly to the old FQCN) also fails
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# hibernate.dialect=org.hibernate.dialect.DerbyDialect
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Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [org.hibernate.dialect.DerbyDialect]
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Caused by: java.lang.ClassNotFoundException: Could not load requested class: org.hibernate.dialect.DerbyDialect
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# org.hibernate.dialect.DerbyDialect does not exist anywhere in hibernate-core-7.4.5.Final.jar
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# (confirmed: unzip -l hibernate-core-7.4.5.Final.jar | grep -i derby -> zero matches).
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## The actual fix
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# Add org.hibernate.orm:hibernate-community-dialects:7.4.5.Final (a SEPARATE artifact,
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# NOT pulled in by hibernate-core, spring-boot-starter-data-jpa, or any Spring Boot starter)
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# and set:
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# hibernate.dialect=org.hibernate.community.dialect.DerbyDialect
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# Confirmed present: unzip -l hibernate-community-dialects-7.4.5.Final.jar | grep -i derby
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# -> org/hibernate/community/dialect/DerbyDialect.class (and DerbyLegacyDialect, for older
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# Derby versions, also in this module).
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