Hi Kaya,

Database constraint violations, as you know, occur because you're trying to
put more than one identical value into a table column that cannot have such
a column.  For the table in question, if you have the same class name for
two different connectors, this would be what you'd expect.

Karl


On Sun, Feb 17, 2019 at 11:33 PM Kaya Ota <kaya.ota....@gmail.com> wrote:

> Hello, folks:
>
> I am new to ManifoldCF, and trying to make my own connector.
> For now, I could successfully build ManifoldCF including my own connector.
> However, when I tried to run, I have exceptions.
>
> The exception I am facing is :
>
> org.apache.manifoldcf.core.interfaces.ManifoldCFException: integrity
> constraint violation: unique constraint or index violation: I1549774667196
>         at
>
> org.apache.manifoldcf.core.database.DBInterfaceHSQLDB.reinterpretException(DBInterfaceHSQLDB.java:734)
>         at
>
> org.apache.manifoldcf.core.database.DBInterfaceHSQLDB.performModification(DBInterfaceHSQLDB.java:754)
>         at
>
> org.apache.manifoldcf.core.database.DBInterfaceHSQLDB.performInsert(DBInterfaceHSQLDB.java:230)
>         at
>
> org.apache.manifoldcf.core.database.BaseTable.performInsert(BaseTable.java:68)
>         at
>
> org.apache.manifoldcf.crawler.connmgr.ConnectorManager.registerConnector(ConnectorManager.java:172)
>         at
>
> org.apache.manifoldcf.crawler.system.ManifoldCF.registerConnectors(ManifoldCF.java:672)
>         at
>
> org.apache.manifoldcf.crawler.system.ManifoldCF.reregisterAllConnectors(ManifoldCF.java:160)
>         at
>
> org.apache.manifoldcf.jettyrunner.ManifoldCFJettyRunner.main(ManifoldCFJettyRunner.java:239)
> Caused by: java.sql.SQLIntegrityConstraintViolationException: integrity
> constraint violation: unique constraint or index violation: I1549774667196
>         at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
>         at org.hsqldb.jdbc.JDBCUtil.sqlException(Unknown Source)
>         at org.hsqldb.jdbc.JDBCPreparedStatement.fetchResult(Unknown
> Source)
>         at org.hsqldb.jdbc.JDBCPreparedStatement.executeUpdate(Unknown
> Source)
>         at
> org.apache.manifoldcf.core.database.Database.execute(Database.java:916)
>         at
>
> org.apache.manifoldcf.core.database.Database$ExecuteQueryThread.run(Database.java:696)
> Caused by: org.hsqldb.HsqlException: integrity constraint violation: unique
> constraint or index violation: I1549774667196
>         at org.hsqldb.error.Error.error(Unknown Source)
>         at org.hsqldb.error.Error.error(Unknown Source)
>         at org.hsqldb.index.IndexAVL.insert(Unknown Source)
>         at org.hsqldb.persist.RowStoreAVL.indexRow(Unknown Source)
>         at org.hsqldb.persist.RowStoreAVLDisk.indexRow(Unknown Source)
>         at org.hsqldb.TransactionManagerMVCC.addInsertAction(Unknown
> Source)
>         at org.hsqldb.Session.addInsertAction(Unknown Source)
>         at org.hsqldb.Table.insertSingleRow(Unknown Source)
>         at org.hsqldb.StatementDML.insertSingleRow(Unknown Source)
>         at org.hsqldb.StatementInsert.getResult(Unknown Source)
>         at org.hsqldb.StatementDMQL.execute(Unknown Source)
>         at org.hsqldb.Session.executeCompiledStatement(Unknown Source)
>         at org.hsqldb.Session.execute(Unknown Source)
>         ... 4 more
>
>
> I am guessing my class-path would have a problem, but do not have a
> confidence.
> What is the cause of this error?
>
> I would appreciate for any of your help.
>
>
> Sincerely,
> Kaya
>

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