java - JPA Hibernate HSQLDB - VARBINARY() field and error attempting to select -

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i found similar question @ hsqldb: duplicate column name, unsupported internal operation: type, invalid character cast, there no intelligible answer. looked @ http://old.nabble.com/unsupported-internal-operation%3a-statementdmql-td27427172.html reports issue bug in hsqldb, should fixed in version using (2.2). so, here's details of problem:

i have entity stores byte[] data in varbinary(128) field inside of hsqldb. table created successfully, when try select table, following stack trace:

java.sql.sqlexception: java.lang.runtimeexception: unsupported internal operation: type java.lang.runtimeexception: unsupported internal operation: type     @ org.hsqldb.jdbc.util.sqlexception(unknown source)     @ org.hsqldb.jdbc.util.sqlexception(unknown source)     @ org.hsqldb.jdbc.jdbcpreparedstatement.fetchresult(unknown source)     @ org.hsqldb.jdbc.jdbcpreparedstatement.executequery(unknown source)     @ com.mchange.v2.c3p0.impl.newproxypreparedstatement.executequery(newproxypreparedstatement.java:76)     @ org.hibernate.jdbc.abstractbatcher.getresultset(abstractbatcher.java:208)     @ org.hibernate.loader.loader.getresultset(loader.java:1953)     @ org.hibernate.loader.loader.doquery(loader.java:802)     @ org.hibernate.loader.loader.doqueryandinitializenonlazycollections(loader.java:274)     @ org.hibernate.loader.loader.dolist(loader.java:2533)     @ org.hibernate.loader.loader.listignorequerycache(loader.java:2276)     @ org.hibernate.loader.loader.list(loader.java:2271)     @ org.hibernate.loader.hql.queryloader.list(queryloader.java:452)     @ org.hibernate.hql.ast.querytranslatorimpl.list(querytranslatorimpl.java:363)     @ org.hibernate.engine.query.hqlqueryplan.performlist(hqlqueryplan.java:196)     @ org.hibernate.impl.sessionimpl.list(sessionimpl.java:1268)     @ org.hibernate.impl.queryimpl.list(queryimpl.java:102)     @ org.hibernate.ejb.queryimpl.getsingleresult(queryimpl.java:274)     @ com.dns.recursive.ipcache.data.cachewrapper.findentry(cachewrapper.java:206)     @ com.dns.recursive.ipcache.net.tcpworker.run(tcpworker.java:114)     @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1110)     @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:603)     @ java.lang.thread.run(thread.java:636) caused by: org.hsqldb.hsqlexception: java.lang.runtimeexception: unsupported internal operation: type     @ org.hsqldb.error.error.error(unknown source)     @ org.hsqldb.result.result.newerrorresult(unknown source)     @ org.hsqldb.statementdmql.execute(unknown source)     @ org.hsqldb.session.executecompiledstatement(unknown source)     @ org.hsqldb.session.execute(unknown source)     ... 21 more caused by: java.lang.runtimeexception: unsupported internal operation: type     @ org.hsqldb.error.error.runtimeerror(unknown source)     @ org.hsqldb.types.type.subtract(unknown source)     @ org.hsqldb.expressionarithmetic.getvalue(unknown source)     @ org.hsqldb.expressionorderby.getvalue(unknown source)     @ org.hsqldb.queryspecification.buildresult(unknown source)     @ org.hsqldb.queryspecification.getsingleresult(unknown source)     @ org.hsqldb.queryspecification.getresult(unknown source)     @ org.hsqldb.statementquery.getresult(unknown source)     ... 24 more

i use in figuring out cause of this. in advance!!

unsupported internal operation generic error reports class in error occured. low-level line of defence against errors. sql error caught , reported before type of error occurs. in case not caught. other exception reports same error string may totally unrelated.

you need report create table statement , select statement runs against it.

the stack trace indicates there order clause includes order - b or b not numbers.


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