Upload file to Application server using OAFileUploadBean instead of Database

Sometimes, there can be requirement , where you need to upload a file on unix server, instead of database.You can use OAMessageFileUploadBean for this. Add the upload bean in your OAF UIX page. Add an additional submit button bean which will be responsible for file Upload.
On click on this button in process form request call the following method with parameters as described in CO. So, copy this method in CO and then call it in process form request on this submit button click like

uploadFileToServer(pageContext, "item3",
"/xx/app/sss/x");


Here is the method for upload:
/**
* @param pageContext is current pagecontext in CO
* @param fileuploadBeanId is item id of file upload bean
* @param server_dir_path is abslute path on unix server
* where file needs to be written.eg "/xx/xxx/xxx"
*/
public void uploadFileToServer(OAPageContext pageContext,
String fileuploadBeanId,
String server_dir_path)
{
DataObject fileUploadData =
(DataObject) pageContext.getNamedDataObject(fileuploadBeanId);
if(fileUploadData!=null)
{
String uFileName =
(String) fileUploadData.selectValue(null, "UPLOAD_FILE_NAME");
String contentType =
(String) fileUploadData.selectValue(null, "UPLOAD_FILE_MIME_TYPE");

File file = new File(server_dir_path, uFileName);
FileOutputStream output = null;
InputStream input = null;
try
{
output = new FileOutputStream(file);
BlobDomain uploadedByteStream =
(BlobDomain) fileUploadData.selectValue(null, uFileName);
input = uploadedByteStream.getInputStream();
for (int bytes = 0; bytes < uploadedByteStream.getLength(); bytes++)
{
output.write(input.read());
}
}
catch (Exception e)
{
e.printStackTrace();
}
finally
{
try
{
if (input != null)
{
input.close();
}
if (output != null)
{
output.close();
output.flush();
}
}
catch (Exception ez)
{
ez.printStackTrace();
}
}

}
}

Please understand when you run a page from jdeveloper, you are running page on local oc4j server of jdeveloper and not the actual application server of Oracle Apps, hence if this code is run from jdeveloper then you need to give path of your local desktop folder and file will be uploaded in it and not the actual application server.
To test this code actually you should deploy your page onto Oracle apps application server and access the page from a responsibility by registering it as a function , because then it will use Oracle Apps Application Unix server and upload file there.
Happy coding ...!

Giving download option to user for a file at a particular location on Application Server

Hi All,
This is a very generic scenario where a user wants to download a particular file from application server. eg- We are storing some report output or some pdf documents in particular location in unix application server. Now in a OAF page on press of a button/link I wanna give user download option for this file.

For this requirement you can use following method, from process form request, u need to pass pagecontext and other parameters as described in method.

//on button click in process form request
//call this method
downloadFileFromServer(
pageContext,--pagecontext
"/xx/xxx/ssss/120devg.pdf",--full file path with file name and ext
"120devg.pdf" --file name with extension
);

Make sure that the folder/files you are giving user option to download through this method, have 777 rights in UNIX server.

Copy these two methods in your CO for the above API to work:
/**
* @param pageContext the current OA page context
* @param file_name_with_path - this is fully qualified file name with its path on unix application
* server. eg "/xxcrp/xxapplcrp/mukul/abc.pdf"
* @param file_name_with_ext - this is file name with extension, you wanna display user
* for download. eg- i wanna display the abc.pdf file download with name five_point_someone.pdf
* then I can pass this as "five_point_someone.pdf"
*/
public void downloadFileFromServer(OAPageContext pageContext,
String file_name_with_path,
String file_name_with_ext)
{
HttpServletResponse response =
(HttpServletResponse) pageContext.getRenderingContext().getServletResponse();
if (((file_name_with_path == null) ||
("".equals(file_name_with_path))))
{
throw new OAException("File path is invalid.");
}

File fileToDownload = null;
try
{
fileToDownload = new File(file_name_with_path);
}
catch (Exception e)
{
throw new OAException("Invalid File Path or file does not exist.");
}

if (!fileToDownload.exists())
{
throw new OAException("File does not exist.");
}

if (!fileToDownload.canRead())
{
throw new OAException("Not Able to read the file.");
}

String fileType = getMimeType(file_name_with_ext);
response.setContentType(fileType);
response.setContentLength((int)fileToDownload.length());
response.setHeader("Content-Disposition",
"attachment; filename=\"" + file_name_with_ext +
"\"");

InputStream in = null;
ServletOutputStream outs = null;

try
{
outs = response.getOutputStream();
in = new BufferedInputStream(new FileInputStream(fileToDownload));
int ch;
while ((ch = in.read()) != -1)
{
outs.write(ch);
}

}
catch (IOException e)
{
// TODO
e.printStackTrace();
}
finally
{
try
{
outs.flush();
outs.close();
if (in != null)
{
in.close();
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
}

/**
* @param s
* @return file mime type from its name
*/
public String getMimeType(String s)
{
int i = s.lastIndexOf(".");
if (i > 0 && i < s.length() - 1)
{
String s1 = s.substring(i + 1);
if (s1.equalsIgnoreCase("amr"))
{
return "audio/amr";
}
if (s1.equalsIgnoreCase("mid"))
{
return "audio/midi";
}
if (s1.equalsIgnoreCase("mmf"))
{
return "application/vnd.smaf";
}
if (s1.equalsIgnoreCase("qcp"))
{
return "audio/vnd.qcelp";
}
if (s1.equalsIgnoreCase("hqx"))
{
return "application/mac-binhex40";
}
if (s1.equalsIgnoreCase("cpt"))
{
return "application/mac-compactpro";
}
if (s1.equalsIgnoreCase("doc"))
{
return "application/msword";
}
if (s1.equalsIgnoreCase("jsp"))
{
return "application/jsp";
}
if (s1.equalsIgnoreCase("oda"))
{
return "application/oda";
}
if (s1.equalsIgnoreCase("pdf"))
{
return "application/pdf";
}
if (s1.equalsIgnoreCase("ai"))
{
return "application/postscript";
}
if (s1.equalsIgnoreCase("eps"))
{
return "application/postscript";
}
if (s1.equalsIgnoreCase("ps"))
{
return "application/postscript";
}
if (s1.equalsIgnoreCase("ppt"))
{
return "application/powerpoint";
}
if (s1.equalsIgnoreCase("rtf"))
{
return "application/rtf";
}
if (s1.equalsIgnoreCase("bcpio"))
{
return "application/x-bcpio";
}
if (s1.equalsIgnoreCase("vcd"))
{
return "application/x-cdlink";
}
if (s1.equalsIgnoreCase("Z"))
{
return "application/x-compress";
}
if (s1.equalsIgnoreCase("cpio"))
{
return "application/x-cpio";
}
if (s1.equalsIgnoreCase("csh"))
{
return "application/x-csh";
}
if (s1.equalsIgnoreCase("dcr"))
{
return "application/x-director";
}
if (s1.equalsIgnoreCase("dir"))
{
return "application/x-director";
}
if (s1.equalsIgnoreCase("dxr"))
{
return "application/x-director";
}
if (s1.equalsIgnoreCase("dvi"))
{
return "application/x-dvi";
}
if (s1.equalsIgnoreCase("gtar"))
{
return "application/x-gtar";
}
if (s1.equalsIgnoreCase("gz"))
{
return "application/x-gzip";
}
if (s1.equalsIgnoreCase("hdf"))
{
return "application/x-hdf";
}
if (s1.equalsIgnoreCase("cgi"))
{
return "application/x-httpd-cgi";
}
if (s1.equalsIgnoreCase("jnlp"))
{
return "application/x-java-jnlp-file";
}
if (s1.equalsIgnoreCase("skp"))
{
return "application/x-koan";
}
if (s1.equalsIgnoreCase("skd"))
{
return "application/x-koan";
}
if (s1.equalsIgnoreCase("skt"))
{
return "application/x-koan";
}
if (s1.equalsIgnoreCase("skm"))
{
return "application/x-koan";
}
if (s1.equalsIgnoreCase("latex"))
{
return "application/x-latex";
}
if (s1.equalsIgnoreCase("mif"))
{
return "application/x-mif";
}
if (s1.equalsIgnoreCase("nc"))
{
return "application/x-netcdf";
}
if (s1.equalsIgnoreCase("cdf"))
{
return "application/x-netcdf";
}
if (s1.equalsIgnoreCase("sh"))
{
return "application/x-sh";
}
if (s1.equalsIgnoreCase("shar"))
{
return "application/x-shar";
}
if (s1.equalsIgnoreCase("sit"))
{
return "application/x-stuffit";
}
if (s1.equalsIgnoreCase("sv4cpio"))
{
return "application/x-sv4cpio";
}
if (s1.equalsIgnoreCase("sv4crc"))
{
return "application/x-sv4crc";
}
if (s1.equalsIgnoreCase("tar"))
{
return "application/x-tar";
}
if (s1.equalsIgnoreCase("tcl"))
{
return "application/x-tcl";
}
if (s1.equalsIgnoreCase("tex"))
{
return "application/x-tex";
}
if (s1.equalsIgnoreCase("textinfo"))
{
return "application/x-texinfo";
}
if (s1.equalsIgnoreCase("texi"))
{
return "application/x-texinfo";
}
if (s1.equalsIgnoreCase("t"))
{
return "application/x-troff";
}
if (s1.equalsIgnoreCase("tr"))
{
return "application/x-troff";
}
if (s1.equalsIgnoreCase("roff"))
{
return "application/x-troff";
}
if (s1.equalsIgnoreCase("man"))
{
return "application/x-troff-man";
}
if (s1.equalsIgnoreCase("me"))
{
return "application/x-troff-me";
}
if (s1.equalsIgnoreCase("ms"))
{
return "application/x-troff-ms";
}
if (s1.equalsIgnoreCase("ustar"))
{
return "application/x-ustar";
}
if (s1.equalsIgnoreCase("src"))
{
return "application/x-wais-source";
}
if (s1.equalsIgnoreCase("xml"))
{
return "text/xml";
}
if (s1.equalsIgnoreCase("ent"))
{
return "text/xml";
}
if (s1.equalsIgnoreCase("cat"))
{
return "text/xml";
}
if (s1.equalsIgnoreCase("sty"))
{
return "text/xml";
}
if (s1.equalsIgnoreCase("dtd"))
{
return "text/dtd";
}
if (s1.equalsIgnoreCase("xsl"))
{
return "text/xsl";
}
if (s1.equalsIgnoreCase("zip"))
{
return "application/zip";
}
if (s1.equalsIgnoreCase("au"))
{
return "audio/basic";
}
if (s1.equalsIgnoreCase("snd"))
{
return "audio/basic";
}
if (s1.equalsIgnoreCase("mpga"))
{
return "audio/mpeg";
}
if (s1.equalsIgnoreCase("mp2"))
{
return "audio/mpeg";
}
if (s1.equalsIgnoreCase("mp3"))
{
return "audio/mpeg";
}
if (s1.equalsIgnoreCase("aif"))
{
return "audio/x-aiff";
}
if (s1.equalsIgnoreCase("aiff"))
{
return "audio/x-aiff";
}
if (s1.equalsIgnoreCase("aifc"))
{
return "audio/x-aiff";
}
if (s1.equalsIgnoreCase("ram"))
{
return "audio/x-pn-realaudio";
}
if (s1.equalsIgnoreCase("rpm"))
{
return "audio/x-pn-realaudio-plugin";
}
if (s1.equalsIgnoreCase("ra"))
{
return "audio/x-realaudio";
}
if (s1.equalsIgnoreCase("wav"))
{
return "audio/x-wav";
}
if (s1.equalsIgnoreCase("pdb"))
{
return "chemical/x-pdb";
}
if (s1.equalsIgnoreCase("xyz"))
{
return "chemical/x-pdb";
}
if (s1.equalsIgnoreCase("gif"))
{
return "image/gif";
}
if (s1.equalsIgnoreCase("ief"))
{
return "image/ief";
}
if (s1.equalsIgnoreCase("jpeg"))
{
return "image/jpeg";
}
if (s1.equalsIgnoreCase("jpg"))
{
return "image/jpeg";
}
if (s1.equalsIgnoreCase("jpe"))
{
return "image/jpeg";
}
if (s1.equalsIgnoreCase("png"))
{
return "image/png";
}
if (s1.equalsIgnoreCase("tiff"))
{
return "image/tiff";
}
if (s1.equalsIgnoreCase("tif"))
{
return "image/tiff";
}
if (s1.equalsIgnoreCase("ras"))
{
return "image/x-cmu-raster";
}
if (s1.equalsIgnoreCase("pnm"))
{
return "image/x-portable-anymap";
}
if (s1.equalsIgnoreCase("pbm"))
{
return "image/x-portable-bitmap";
}
if (s1.equalsIgnoreCase("pgm"))
{
return "image/x-portable-graymap";
}
if (s1.equalsIgnoreCase("ppm"))
{
return "image/x-portable-pixmap";
}
if (s1.equalsIgnoreCase("rgb"))
{
return "image/x-rgb";
}
if (s1.equalsIgnoreCase("xbm"))
{
return "image/x-xbitmap";
}
if (s1.equalsIgnoreCase("xpm"))
{
return "image/x-xpixmap";
}
if (s1.equalsIgnoreCase("xwd"))
{
return "image/x-xwindowdump";
}
if (s1.equalsIgnoreCase("html"))
{
return "text/html";
}
if (s1.equalsIgnoreCase("htm"))
{
return "text/html";
}
if (s1.equalsIgnoreCase("txt"))
{
return "text/plain";
}
if (s1.equalsIgnoreCase("rtx"))
{
return "text/richtext";
}
if (s1.equalsIgnoreCase("tsv"))
{
return "text/tab-separated-values";
}
if (s1.equalsIgnoreCase("etx"))
{
return "text/x-setext";
}
if (s1.equalsIgnoreCase("sgml"))
{
return "text/x-sgml";
}
if (s1.equalsIgnoreCase("sgm"))
{
return "text/x-sgml";
}
if (s1.equalsIgnoreCase("mpeg"))
{
return "video/mpeg";
}
if (s1.equalsIgnoreCase("mpg"))
{
return "video/mpeg";
}
if (s1.equalsIgnoreCase("mpe"))
{
return "video/mpeg";
}
if (s1.equalsIgnoreCase("qt"))
{
return "video/quicktime";
}
if (s1.equalsIgnoreCase("mov"))
{
return "video/quicktime";
}
if (s1.equalsIgnoreCase("avi"))
{
return "video/x-msvideo";
}
if (s1.equalsIgnoreCase("movie"))
{
return "video/x-sgi-movie";
}
if (s1.equalsIgnoreCase("ice"))
{
return "x-conference/x-cooltalk";
}
if (s1.equalsIgnoreCase("wrl"))
{
return "x-world/x-vrml";
}
if (s1.equalsIgnoreCase("vrml"))
{
return "x-world/x-vrml";
}
if (s1.equalsIgnoreCase("wml"))
{
return "text/vnd.wap.wml";
}
if (s1.equalsIgnoreCase("wmlc"))
{
return "application/vnd.wap.wmlc";
}
if (s1.equalsIgnoreCase("wmls"))
{
return "text/vnd.wap.wmlscript";
}
if (s1.equalsIgnoreCase("wmlsc"))
{
return "application/vnd.wap.wmlscriptc";
}
if (s1.equalsIgnoreCase("wbmp"))
{
return "image/vnd.wap.wbmp";
}
if (s1.equalsIgnoreCase("css"))
{
return "text/css";
}
if (s1.equalsIgnoreCase("jad"))
{
return "text/vnd.sun.j2me.app-descriptor";
}
if (s1.equalsIgnoreCase("jar"))
{
return "application/java-archive";
}
if (s1.equalsIgnoreCase("3gp"))
{
return "video/3gp";
}
if (s1.equalsIgnoreCase("3g2"))
{
return "video/3gpp2";
}
if (s1.equalsIgnoreCase("mp4"))
{
return "video/3gpp";
}
}
return "application/octet-stream";
}

Happy coding...! I hope this helps! :)

Implementing Export Button Functionality Programatically

Hi All,
There is often a requirement to export a VO data or a UI table data into a CSV file. OA Framework provides export button bean for the this functionality, which works fine in almost 99% of the cases. But sometimes, you might face a scenario when ur table u have complex UIs like switcher/hide show columns etc, where the standard export functionality doesn't work or you want some columns not to come in export, or you wanna change some data on export.

In such cases, you can implement the export functionality programatically by yourself.Copy paste the following method in the page CO and pass appropriate parameters to get exported data.You can change this method, as per your requirement, to get data/format data or change data.

By default this method will bring all columns of fetch rows of VO instance,although you can use param hidden_attrib_list to pass attributes which you don't want to be included in csv file.You can call this method in the submit button event that you have made in process form request like :

//see api parameter details in the method below.
//array of Vo attr names which need not be written in csv file
String ss[]={xID,xName};
downloadCsvFile(pageContext, "XxAdatVisSearchVO",null, "MAX",ss);

/**
* @param pageContext
* @param view_inst_name is the view object instance name like VO1 etc in root AM.
* Make sure the VO instance name you have passed should be same as in Root AM.
* @param file_name_without_ext - pass for eg for abc.csv , u should pass "abc".If no
* name is passed then by default it will pick "Export.csv".
* @param max_size -pass "MAX", if u want all rows, pass null to get fetch row count
* else pass integer number like 10,20 etc , the number of rows you want to fetch.
* @param hidden_attrib_list -Array of VO attribute names which doesn't need to be shown/written in
* csv file.
*/
public void downloadCsvFile(OAPageContext pageContext,
String view_inst_name,
String file_name_without_ext,
String max_size, String[] hidden_attrib_list)
{
OAViewObject v =
(OAViewObject) pageContext.getRootApplicationModule().findViewObject(view_inst_name);

if (v == null)
{
throw new OAException("Could not find View object instance " +
view_inst_name + " in root AM.");
}
if (v.getFetchedRowCount() == 0)
{
throw new OAException("There is no data to export.");
}
String file_name = "Export";
if (!((file_name_without_ext == null) ||
("".equals(file_name_without_ext))))
{
file_name = file_name_without_ext;
}
HttpServletResponse response =
(HttpServletResponse) pageContext.getRenderingContext().getServletResponse();
response.setContentType("application/text");
response.setHeader("Content-Disposition",
"attachment; filename=" + file_name + ".csv");
PrintWriter pw = null;

try
{
pw = response.getWriter();
int j = 0;
int k = 0;
boolean bb = true;
if ((max_size == null) || ("".equals(max_size)))
{
k = Integer.parseInt(pageContext.getProfile("VO_MAX_FETCH_SIZE"));
bb = false;
}
else if ("MAX".equals(max_size))
{
bb = true;
}
else
{
k = Integer.parseInt(max_size);
bb = false;
}

//Making header
AttributeDef[] a = v.getAttributeDefs();
StringBuffer cc = new StringBuffer();
ArrayList exist_list = new ArrayList();
for (int l = 0; l < a.length; l++)
{
boolean zx = true;
if (hidden_attrib_list != null)
{
for (int z = 0; z < hidden_attrib_list.length; z++)
{
if (a[l].getName().equals(hidden_attrib_list[z]))
{
zx = false;
exist_list.add(String.valueOf(a[l].getIndex()));
}
}
}
if (zx)
{
cc.append("\"" + a[l].getName() + "\"");
cc.append(",");
}
}
String header_row = cc.toString() + "\n";
pw.write(header_row);

for (OAViewRowImpl row = (OAViewRowImpl) v.first(); row != null;
row = (OAViewRowImpl) v.next())
{
j++;
StringBuffer b = new StringBuffer();
for (int i = 0; i < v.getAttributeCount(); i++)
{
boolean cv = true;
for (int u = 0; u < exist_list.size(); u++)
{
if (String.valueOf(i).equals(exist_list.get(u).toString()))
{
cv = false;
}
}

if (cv)
{
Object o = row.getAttribute(i);

if (!(o == null))
{
if (o.getClass().equals(Class.forName("oracle.jbo.domain.Date")))
{
//formatting of date
oracle.jbo.domain.Date dt = (oracle.jbo.domain.Date) o;
java.sql.Date ts = (java.sql.Date) dt.dateValue();
java.text.SimpleDateFormat displayDateFormat =
new java.text.SimpleDateFormat("dd-MMM-yyyy");
String convertedDateString = displayDateFormat.format(ts);
b.append("\"" + convertedDateString + "\"");
}
else
{
b.append("\"" + o.toString() + "\"");
}
}
else
{
b.append("\"\"");
}
b.append(",");
}
}
String final_row = b.toString() + "\n";
pw.write(final_row);
if (!bb)
{
if (j == k)
{
break;
}
}
}
}
catch (Exception e)
{
// TODO
e.printStackTrace();
throw new OAException("Unexpected Exception occured.Exception Details :" +
e.toString());
}
finally
{
pw.flush();
pw.close();
}
}

Happy coding!