for (int j=0;j<joinUniqueConstraints.length;j++)
{
UniqueMetaData unimd = new UniqueMetaData(null, null, null);
for (int k=0;k<joinUniqueConstraints[j].columnNames().length;k++)
{
unimd.addColumn(new ColumnMetaData(unimd, joinUniqueConstraints[j].columnNames()[k]));
}
joinmd.setUniqueMetaData(unimd); // JDO only supports a single unique constraint on a join table
}
}
}