Data Connectivity
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Roland
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Quote Roland Replybullet Topic: Blob DataSource
    Posted: 13 Jul 2012 at 12:10am
Hallo,
I have a problem that I can't set a Blob-Field in Java-Source-Code.

The program have the following logic.
  1. There is an JavaBean, that will return a ResultSet with the data.
    This resultset is set as DataSource on the ReportDocument.
  2. The ResultSet is created by MockRunner in Code.
  3. In the ResultSet there is a column which have the type java.sql.Types.BLOB.
  4. In the Blob-Column are Bitmaps serialized as Byte-Array
    rs.addColumn("blobbmp", new Blob[]{new SerialBlob(loadImage("bmp"))});
If I use the JavaBean as DataSource in the Crystal Reports Designer, there are no problems. The designer shows me all data and images in the preview window.
But if I set the ResultSet as DataSource in JavaCode, I can't see any data in the generated report.
 
I have set the data in code like this:

document.getDatabaseController().setDataSource(bean.TypenTest(), "TypenTest", "TypenTest");

Then I have exported the report as PDF-File

In the generated pdf-document I can't see any data from the JavaBean.
But if I remove the Blob-Column from the ResultSet, then I can the the other data.

Has anyone a tipp what I can do?
Maybe Blob-Columns are not supported by JavaBean. But I can't find a corresponding hint in documentation.
 
Thanks for your help.
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