Is there an object like StringBuffer, but for binary data?

I like the performance of StringBuffer, it's very fast when I use the indexOf() and lastIndexOf() methods.
Is there an equivalent buffer object for binary data so that I can quickly search for byte sequences fast instead of looping through it?
Thanks.

I like the performance of StringBuffer, it's very fast when I use the indexOf() and lastIndexOf() methods.You mean fast as in O(n)?
Is there an equivalent buffer object for binary data so that I can quickly search for byte sequences fast instead of looping through it?A ByteBuffer might be useful, though you will have to loop - (thats what StringBuffer does)

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I know the above address you offered but those are
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Download file problem for binary data?

Dear All,
I have wrote a jsp file to do download page. I have used a piece of code from the JDC to this. This code will prompt the download dialog box each time user clicks the download button. The code itself will set the content type for different application. The code is like below:
try
java.io.File fileobj = new java.io.File(strFolder + strFile);
response.setContentType(application.getMimeType(fileobj.getName()));
response.setHeader("Content-Disposition","attachment; filename=\""
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java.io.FileInputStream in = new java.io.FileInputStream(fileobj);
int ch;
while ((ch = in.read()) != -1) {
out.write(ch);
out.flush();
in.close();
} catch(Exception e)
The code can download and handle text file correctly when it is openned in the text editor or inside the IE. But when a PDF file or Image is downloaded and openned in the PDF viewer or image viewer, it is corrupted and cannot be viewed. What is the problem? Any ideas?
So, I wonder this code can handle binary data or not. It is seen like there is no different code to handle text and binary data in Java/Jsp.
Thank you very much!
Best Regards,
Rockyu Lee


Add following lines to .tld file (custom tag definition)
<tag>
<name>downloadbinary</name>
<tagclass>org.rampally.DownloadBinaryTag</tagclass>
<bodycontent>JSP</bodycontent>
</tag>
Add following line to JSP files.
In JSP, keep one line of source. Make sure that there are no space and additional line feeds at the any where
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<%@ taglib uri="/WEB-INF/taglibs/mb.tld" prefix="mytags" %>
<mytags:downloadbinary />
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          } catch (Exception e) {
               System.out.println(e.getMessage());
     static public void sendBinaryFile( byte[] data,
                              HttpServletResponse response,
                              String contentType ) {
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               response.setHeader("Content-disposition", "inline; filename=" + newFileName );
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               sout.flush();
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          } catch (Exception e) {
               System.out.println(e.getMessage());
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That's all!!.. Hope this helps...!

Best Datatype for Binary Data

Hi,
We storing a Binary Data say "ù?" in oracle as String Datatype.
I have formed the query in my application to insert a record which has above string as one of the String field value.
The insertion was success but when the above string is not stored as it is but it is stored as "¿ù?" which is not a correct data.
Is this problem is because I'm using string for storing binary data?
Also please let me know what could be the best data type to store the binary data (like above data) in oracle.

Justin,
With the help of your query I identified how the bytes are stored in the memory.
I'm having VARCHAR2 datatype of size 14 in oracle when ever i store my binary data it is storing as
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But the problem is whenever a byte is holding the binary equivalent of 128 it is storing in the oracle as 191
eq:
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Data plug-in for binary data with byte streams of variable length

Hi there,
I would like to write a data plug-in to read binary data from file and I'm using DIAdem 10.1.
Each data set in my file consists of binary data with a fixed structure (readable by using direct access channels) and of a byte stream of variable length. The variable length of each byte stream is coded in the fixed data part.
Can anyone tell me how my data plug-in must look like to read such kind of data files?
Many thanks in advance!
Kind regards,
Stefan

Hi Brad,
thank you for the very quick response!
I forgot to mention, that the data in the byte stream can actually be ignored, it is no data to be evaluated in DIAdem (it is picture data and the picture size varies from data set to data set).
So basically, of each data set I would like to read the fixed-structure data (which is the first part of the data set) and discard the variable byte stream (last part of the data set).
Here is a logical (example) layout of my binary data file:
| fixedSize-Value1 | fixedSize-Value2 | fixedSize-Value3 (=length of byte stream) | XXXXXXXXXXXXX (byte stream)
| fixedSize-Value1 | fixedSize-Value2 | fixedSize-Value3 (=length of byte stream) | XXXXXX (byte stream)
| fixedSize-Value1 | fixedSize-Value2 | fixedSize-Value3 (=length of byte stream) | XXXXXXXXXXXXXXXXXXXX (byte stream)
What I would like to show in DIAdem is only fixedSize-Value1 and fixedSize-Value2.
´
If I understood right, would it be possible to set the BlockLength of each data set by assigning Block.BlockLength = fixedSize-Value3 and to use Direct Access Channels for reading fixedSize-Value1 and fixedSize-Value2 ?
Thank you!
Kind regards,
Stefan

Plugin for binary data: channels with coefficient : y = a3*x^3 + a2*x^2 + a1*x +a0

Hello,
I am bulding a plugin for extracting data from a binary file.
My problem is that the scaling of the values is not defiened by a linear equation (y = a1*x + a0 where conversion is easy with Factor and Offset properties of Channel), but by a cubic equation (y = a3*x^3 + a2*x^2 + a1*x +a0) with 4 coefficients. For the moment, I performed the operation in a loop over all the values of the channel... this takes a lot of time to convert all the values!!! Is there a more efficient way for multiplying array in VBA or channels in DIADem (for Plugins!!!)...?

Hi Ollac,
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Ask if you have questions about this,
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National Instruments

Use httpchannel/httpservice combination for binary data

I have a blazeds proxy configuration set up with my flex application to communicate with a RESTful webservice.
This webservice is practically an interface to a content management system which has all types of content text and binary(audio,video,images etc) protected by HTTP basic authentication. I had no reason to use Blazeds except for its proxy capabilities to enable HTTP Authentication headers to be sent from the application to the webserver which dont work when sent directly to the server as mentioned.See related post below -
http://tech.groups.yahoo.com/group/flexcoders/message/136576
I send the requests through HTTPService from flex through a configured destination and it works well for all data formats supported by HTTPservice. Unfortunately HTTPService does not support binary resultformat for images,audio and video. I am aware that i should use a streaming server for audio and video data but for images I would like to go through the blazeds proxy to the webserver. Loader is the only class which is recommended to be used with images but i am not sure of how to use it with blazeds.
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Try this...
var b:ByteArray = _dataLoaderHTTPService.lastResult as
ByteArray;
b.position = 0;
trace(b.readObject());
Bob I.

Ideal column type for Binary Data ??

Hi there,
I must store binary data of fixed length (e.g. IP address of 4/16 bytes) into a table and manipulate that table over C++ / OCI.
The database server is running on either SUN/SPARC or LINUX/i86. The clients are running on a broad range of systems (NT/i86, LINUX/x86, SUN/SPARC, ..).
I am worried about the OCI layer modifying char/varchar values while transmission ...
Whats the best approach ??
Use CHAR/VARCHAR or use the variable length RAW even for fixed length binary data ??
Any help would be greatly appreciated,
Tobias
null

I guess RAW is the best approach

Is there an object like StringBuffer, but for binary data?

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