Retrieve columns by name iso index
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Key: DDLUTILS-217
URL: https://issues.apache.org/jira/browse/DDLUTILS-217
Project: DdlUtils
Issue Type: Improvement
Components: Core (No specific database)
Affects Versions: 1.0
Reporter: Rick Riemer
Assignee: Thomas Dudziak
Fix For: 1.1
MetaDataColumnDescriptor.readColumn() currently attempts to find the column
index of a column before retrieving it from the ResultSet in order for it to
return the default value if the column does not exist. Some JDBC
implementations (e.g. IBM's DB2 JCC4 driver) have broken ResultSetMetaData
implementations however, which do not return the correct columns names.
By attempting to retrieve the columns by name iso index before retrieving the
ResultSetMetaData we avoid hitting these broken paths in the general case. It
has the added benefit of not having to retrieve the result set meta data for
each column read, which may be potentially harmful to the performance.
I'm attaching a patch which implements this behavior.
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