Upload to BLOB

Question

How can you do an upload into a blob using ADF/JSP/Struts? I've seen the demo for OrdDoc but would rather have the blob as it would be easier to move between instances over a db link (cannot do with object type).
Thoughts/tips/code?
I can provide what does NOT work...

Answer 1

Here is the code I am using (Error message first):
Target URL -- http://10.141.146.47:8988/UploadedFiles-ViewController-context-root/uploadDocument.do
06/12/19 07:49:45 Oracle Application Server Containers for J2EE 10g (10.1.2.0.2) initialized
Dec 19, 2006 7:49:45 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.util.LocalStrings', returnNull=true
Dec 19, 2006 7:49:45 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.action.ActionResources', returnNull=true
Dec 19, 2006 7:49:45 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='uploadedfiles.view.ApplicationResources', returnNull=true
06/12/19 07:49:48 *** UploadDocumentAction.findForward() ***
Dec 19, 2006 7:49:48 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
Dec 19, 2006 7:49:48 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
Dec 19, 2006 7:49:48 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.util.LocalStrings', returnNull=true
Dec 19, 2006 7:49:48 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
Dec 19, 2006 7:49:48 AM org.apache.struts.util.PropertyMessageResources <init>
INFO: Initializing, config='org.apache.struts.taglib.html.LocalStrings', returnNull=true
06/12/19 07:49:55 *** UploadDummyBlobAction.onUpload - START ***
06/12/19 07:49:55 myrow.getId() = null
06/12/19 07:49:56 myrow.getFilename() = null
06/12/19 07:49:56 java.lang.NullPointerException
06/12/19 07:49:56 at uploadedfiles.view.UploadDocumentAction.onUpload(UploadDocumentAction.java:82)
06/12/19 07:49:56 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
06/12/19 07:49:56 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
06/12/19 07:49:56 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
06/12/19 07:49:56 at java.lang.reflect.Method.invoke(Method.java:324)
06/12/19 07:49:56 at oracle.adf.controller.lifecycle.PageLifecycle.handleEvent(PageLifecycle.java:544)
06/12/19 07:49:56 at oracle.adf.controller.struts.actions.StrutsPageLifecycle.handleEvent(StrutsPageLifecycle.java:252)
06/12/19 07:49:56 at oracle.adf.controller.lifecycle.PageLifecycle.processComponentEvents(PageLifecycle.java:477)
06/12/19 07:49:56 at oracle.adf.controller.struts.actions.DataAction.processComponentEvents(DataAction.java:235)
06/12/19 07:49:56 at oracle.adf.controller.struts.actions.DataAction.processComponentEvents(DataAction.java:430)
06/12/19 07:49:56 at oracle.adf.controller.lifecycle.PageLifecycle.handleLifecycle(PageLifecycle.java:126)
06/12/19 07:49:56 at oracle.adf.controller.struts.actions.DataAction.handleLifecycle(DataAction.java:222)
06/12/19 07:49:56 at oracle.adf.controller.struts.actions.DataAction.execute(DataAction.java:153)
06/12/19 07:49:56 at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
06/12/19 07:49:56 at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
06/12/19 07:49:56 at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
06/12/19 07:49:56 at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
06/12/19 07:49:56 at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
06/12/19 07:49:56 at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
06/12/19 07:49:56 at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
06/12/19 07:49:56 at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source)
06/12/19 07:49:56 at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:16)
06/12/19 07:49:56 at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:239)
06/12/19 07:49:56 at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:659)
06/12/19 07:49:56 at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:330)
06/12/19 07:49:56 at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:830)
06/12/19 07:49:56 *** UploadDocumentAction.findForward() ***
06/12/19 07:49:56 UploadDocumentAction.findForward()- event : Upload
06/12/19 07:49:56 at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:285)
06/12/19 07:49:56 at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:126)
06/12/19 07:49:56 at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
06/12/19 07:49:56 at java.lang.Thread.run(Thread.java:534)
public class UploadDocumentAction extends DataForwardAction {
protected void processUpdateModel(DataActionContext actionContext) {
super.processUpdateModel(actionContext);
// Create a blank record in the model and set it as the current row
BindingContext bc = actionContext.getBindingContext();
DCDataControl dc = bc.findDataControl("UploadedFilesServiceDataControl");
UploadedFilesService service = (UploadedFilesService)dc.getDataProvider();
service.insertRowIntoUploadedFilesView();
* public void onUpload( DataActionContext ctx )
* This handles uploading a file into a blob domain by use of a
* transient view attribute (TempOrdDoc) and then getting the uploaded
* file (which is passivated to the oc4j's ordpas folder) and then placing
* this via input/output stream calls into a BlobDomain to place into the
* view object's row.
* Processing Steps:
* 1. Get access to the current row of the iterator and cast it to an
* exposed client interface. This allows easier placement of the
* values into the record.
* 2. Get access to the TempOrdDoc and retrieve the file source content.
* this appears to contain the ORD IM passivated blob,ie:
* C:\jdev1012\jdev\system10.1.2.0.0.1811\oc4j-config\ordpas\ord10858pas
* 3. Create input stream to this object and output stream to the view
* object's blob, then read/write the data.
* 4. Set the view object columns: Content Type, Size, and Blob. Note that
* we have to get the description from the request to set it.
* 5. Get access to the application module, then commit the transaction.
* @param ctx
public void onUpload( DataActionContext ctx ) {
System.out.println("*** UploadDocumentAction.onUpload - START ***");
HttpServletRequest request = ctx.getHttpServletRequest();
try {
DCBindingContainer bc = ctx.getBindingContainer();
DCIteratorBinding iter = bc.findIteratorBinding("UploadedFilesView1Iterator");
Row r = iter.getCurrentRow();
UploadedFilesViewRowClient myrow = (UploadedFilesViewRowClient) r;
System.out.println("myrow.getId() = " + myrow.getId());
System.out.println("myrow.getFilename() = " + myrow.getFilename());
OrdDocDomain doc = myrow.getTempOrdDocDomain();
OrdContentSource ocontent = doc.getContentSource();
OrdFileSource fSource = (OrdFileSource) ocontent;
System.out.println( "fSource.getContentLength()=" + fSource.getContentLength());
System.out.println( "fSource.getFileName()=" + fSource.getFileName() );
System.out.println( "fSource.getMimeType()=" + fSource.getMimeType() );
InputStream istream = fSource.getInputStream();
BlobDomain blob = myrow.getContent();
int bufsize;
if ( blob == null ) {
blob = new BlobDomain();
bufsize = 32767;
} else {
bufsize = blob.getBufferSize();
r.lock(); // required for a blob update.
OutputStream out = blob.getBinaryOutputStream();
int length = 0;
byte buf[] = new byte[bufsize];
while ((istream != null) && ((length = istream.read(buf)) != -1)) {
out.write(buf, 0, length);
System.out.println("read " + length + " bytes from in, writing to out");
istream.close();
out.flush();
out.close();
myrow.setContent( blob );
BindingContext bctx = ctx.getBindingContext();
DCDataControl dc = bctx.findDataControl("UploadedFilesServiceDataControl");
UploadedFilesService service = (UploadedFilesService)dc.getDataProvider();
service.saveRowUploadedFilesView();
catch ( Exception ex )
// required by fSource.getInputStream();
ex.printStackTrace();
} // onUpload
protected void findForward(DataActionContext actionContext) throws Exception {
System.out.println("*** UploadDocumentAction.findForward() ***");
// Try to catch errors instead of the default error handler.
try {
List events = actionContext.getEvents();
if (events != null && events.size() > 0) {
ListIterator li = events.listIterator();
while (li.hasNext()) {
System.out.println("UploadDocumentAction.findForward()- event : " + li.next().toString());
} catch (Exception e) {
System.out.println(e.getMessage() );
e.printStackTrace(System.out);
super.findForward(actionContext);
/* UploadedFilesViewRowClient.java */
public class UploadedFilesViewRowClient extends RowImpl
* This is the default constructor (do not remove)
public UploadedFilesViewRowClient() {}
public oracle.jbo.domain.Number getId() {
return (oracle.jbo.domain.Number)getAttribute("Id");
public void setId(oracle.jbo.domain.Number value) {
setAttribute("Id", value);
public String getFilename() {
return (String)getAttribute("Filename");
public void setFilename(String value) {
setAttribute("Filename", value);
public oracle.jbo.domain.BlobDomain getContent() {
return (oracle.jbo.domain.BlobDomain)getAttribute("Content");
public void setContent(oracle.jbo.domain.BlobDomain value) {
setAttribute("Content", value);
public oracle.jbo.domain.Date getDateCreated() {
return (oracle.jbo.domain.Date)getAttribute("DateCreated");
public void setDateCreated(oracle.jbo.domain.Date value) {
setAttribute("DateCreated", value);
public oracle.ord.im.OrdDocDomain getTempOrdDocDomain() {
return (oracle.ord.im.OrdDocDomain)getAttribute("TempOrdDocDomain");
public void setTempOrdDocDomain(oracle.ord.im.OrdDocDomain value) {
setAttribute("TempOrdDocDomain", value);
/* UploadedFilesServiceImpl.java */
public void insertRowIntoUploadedFilesView() {
//vo is your view object
ViewObject vo = getUploadedFilesView1();
Row aRow = vo.createRow();
aRow.setNewRowState(Row.STATUS_INITIALIZED);
/* Do these get populated automatically? Yes! since setup in entity as historical */
vo.insertRow(aRow);
vo.setCurrentRow(aRow);
// getTransaction().commit();
public void saveRowUploadedFilesView() {
//vo is your view object
ViewObject vo = getUploadedFilesView1();
getTransaction().commit();
...