Hello,
I've tried to use UniversalDataWriter without success and have now switched to CustomJavaWriter. I would like to write a file as image from a database BLOB.
I've a loop to process each record and then this code:
Object objLogo = record.getField("logo").getValue();
String fileUrl = "...";
try (OutputStream os = getOutputStream(fileUrl, false)) {
os.write(objLogo);
}
catch (IOException e) {
throw new JetelRuntimeException(e);
}
I don't know if the Clover byte is directly mapped to a Java byte / byte array. I've checked the javadoc without success.
What is the best java object to map the defined Clover byte to? Could you help me?
Thanks,
Thomas
I've tried to use UniversalDataWriter without success and have now switched to CustomJavaWriter. I would like to write a file as image from a database BLOB.
I've a loop to process each record and then this code:
Object objLogo = record.getField("logo").getValue();
String fileUrl = "...";
try (OutputStream os = getOutputStream(fileUrl, false)) {
os.write(objLogo);
}
catch (IOException e) {
throw new JetelRuntimeException(e);
}
I don't know if the Clover byte is directly mapped to a Java byte / byte array. I've checked the javadoc without success.
What is the best java object to map the defined Clover byte to? Could you help me?
Thanks,
Thomas
-
Found the solution - it's simple - byte field type has to be mapped to byte array as:
Object objLogo = record.getField("logo").getValue();
byte[] logo = (byte[]) objLogo;
try (OutputStream os = getOutputStream(fileUrl, false)) {
os.write(logo);
}
catch (IOException e) {
throw new JetelRuntimeException(e);
} -
Hi Thomas,
I am glad to see that you have successfully achieved your goal using the CustomJavaComponent. Thanks for posting the solution.
However, I am a little bit concerned about the UniversalDataWriter difficulties as well. Would you be so kind and tell me what exactly have you experienced? As a matter of fact, the UniversalDataWriter should be able to write the byte field type to file as well. I have created a simple graph for your review (in attachment, use any picture as input data). Please review especially the metadata setup:
metadataByte.jpg
Please let me know what is your use case and what issue exactly you have encountered as I can provide more details. Thank you, Eva
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