从 hibernate 5.2 迁移到 5.3 时，hibernate 尝试使用奇怪的序列

Question

从休眠 5.2.17 升级到 5.3.6 后，我收到此错误：

Caused by: org.h2.jdbc.JdbcSQLException: Schéma "ENHANCED" non trouvé

Schema "ENHANCED" not found; SQL statement:

call next value for enhanced.SequenceStyleGenerator [90079-197]

    at org.h2.engine.SessionRemote.done(SessionRemote.java:623) ~[h2-1.4.197.jar:1.4.197]

    at org.h2.command.CommandRemote.prepare(CommandRemote.java:85) ~[h2-1.4.197.jar:1.4.197]

    at org.h2.command.CommandRemote.<init>(CommandRemote.java:51) ~[h2-1.4.197.jar:1.4.197]

    at org.h2.engine.SessionRemote.prepareCommand(SessionRemote.java:493) ~[h2-1.4.197.jar:1.4.197]

    at org.h2.jdbc.JdbcConnection.prepareCommand(JdbcConnection.java:1247) ~[h2-1.4.197.jar:1.4.197]

    at org.h2.jdbc.JdbcPreparedStatement.<init>(JdbcPreparedStatement.java:76) ~[h2-1.4.197.jar:1.4.197]

    at org.h2.jdbc.JdbcConnection.prepareStatement(JdbcConnection.java:304) ~[h2-1.4.197.jar:1.4.197]

    at com.mchange.v2.c3p0.impl.NewProxyConnection.prepareStatement(NewProxyConnection.java:567) ~[c3p0-0.9.5.2.jar:0.9.5.2]

    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$1.doPrepare(StatementPreparerImpl.java:87) ~[hibernate-core-5.3.6.Final.jar:5.3.6.Final]

    at org.hibernate.engine.jdbc.internal.StatementPreparerImpl$StatementPreparationTemplate.prepareStatement(StatementPreparerImpl.java:172) ~[hibernate-core-5.3.6.Final.jar:5.3.6.Final]

使用 hibernate 5.2 它可以按预期工作，但不再使用 hibernate 5.3。

这里的迁移指南：https : //github.com/hibernate/hibernate-orm/blob/5.3/migration-guide.adoc不引用序列生成器的任何更改。

可能是什么问题 ？

Answer 1

我发现这是 hibernate 5.3 的新行为：在SequenceStyleGenerator.determineSequenceName添加代码的方法中：final Boolean preferGeneratorNameAsDefaultName = serviceRegistry.getService( ConfigurationService.class )&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; .getSetting( AvailableSettings.PREFER_GENERATOR_NAME_AS_DEFAULT_SEQUENCE_NAME, StandardConverters.BOOLEAN, true );if ( preferGeneratorNameAsDefaultName ) {&nbsp; &nbsp; final String generatorName = params.getProperty( IdentifierGenerator.GENERATOR_NAME );&nbsp; &nbsp; if ( StringHelper.isNotEmpty( generatorName ) ) {&nbsp; &nbsp; &nbsp; &nbsp; fallbackSequenceName = generatorName;&nbsp; &nbsp; }}新的默认行为是使用生成器名称作为序列名称。所以从hibernate 5.2迁移到5.3有两种可能：将生成器名称更改为序列名称通过在休眠配置（或生成器参数）中设置hibernate.model.generator_name_as_sequence_name为不使用生成器名称，恢复到休眠 5.2- 行为false