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The Open Source version of the IBM Toolbox for Java
There is a newer version: 11.1




IBM Toolbox for Java Example: Reading and Transforming Spooled File Data


Examples using PrintObjectPageInputStream and PrintObjectTransformedInputStream

The following examples demonstrate how to set up a PrintParameterList to obtain
different transformations when reading spooled file data.  In the code
segments that follow, assume a spooled file already exists on a system, 
and the  createSpooledFile() method creates
an instance of the SpooledFile class representing the spooled file.

Example of PrintObjectPageInputStream
The following example shows how to create a PrintObjectPageInputStream object for
reading pages of data formatted as GIF images.
In this case, each page from the spooled file will be transformed into
a GIF image.  A GIF workstation customization object is used to
specify the data transform.
// Create a spooled file
SpooledFile splF = createSpooledFile();

// Set up print parameter list
PrintParameterList printParms = new PrintParameterList();
printParms.setParameter(PrintObject.ATTR_WORKSTATION_CUST_OBJECT, "/QSYS.LIB/QWPGIF.WSCST");
printParms.setParameter(PrintObject.ATTR_MFGTYPE, "*WSCST");

// Create a page input stream from the spooled file
PrintObjectPageInputStream is = splF.getPageInputStream(printParms);


Example of PrintObjectTransformedInputStream
The following example shows how to create a PrintObjectTransformedInputStream object for
reading data formatted as TIFF.
A TIFF (G4 compression) workstation customization object is used
to specify the data transform.
// Create a spooled file
SpooledFile splF = createSpooledFile();

// Set up print parameter list
PrintParameterList printParms = new PrintParameterList();
printParms.setParameter(PrintObject.ATTR_WORKSTATION_CUST_OBJECT, "/QSYS.LIB/QWPTIFFG4.WSCST");
printParms.setParameter(PrintObject.ATTR_MFGTYPE, "*WSCST");

// Create a transformed input stream from the spooled file
PrintObjectTransformedInputStream is = splF.getTransformedInputStream(printParms);


Example of PrintObjectTransformedInputStream using manufacturer type and model
The following example shows how to create a PrintObjectTransformedInputStream object for
reading data formatted for output to an ASCII printer.
A manufacturer type and model of *HP4 is used to specify the data transform.
// Create a spooled file
SpooledFile splF = createSpooledFile();

// Set up print parameter list
PrintParameterList printParms = new PrintParameterList();
printParms.setParameter(PrintObject.ATTR_MFGTYPE, "*HP4");

// Create a transformed input stream from the spooled file
PrintObjectTransformedInputStream is = splF.getTransformedInputStream(printParms);