Kasper Sørensen created METAMODEL-100:
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Summary: AbstracColumn.equals(..) does not take into account the
column number
Key: METAMODEL-100
URL: https://issues.apache.org/jira/browse/METAMODEL-100
Project: Metamodel
Issue Type: Bug
Affects Versions: 4.3.0-incubating
Reporter: Kasper Sørensen
I ran into a rare issue the other day: While reading a CSV file that had
duplicate column names, doing a subselection on the table caused the values at
the position of the duplicated column names to be duplicated values instead of
the values really at the records.
The table layout would be like:
{code}
foo,foo,bar
1,2,3
4,5,6
{code}
But while selecting "foo", "foo" and "bar" it emitted records:
{code}
1,1,3
4,4,6
{code}
After some debugging it seems that the indexOf(...) calls on the DataSetHeader
is eventually delegating to an equals(..) call on AbstractColumn. This equals
method does not take into account the column number and thus the columns are
deemed equal although they are not.
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