call twice the paint bean on FF (when the page is loaded) an

[rigolissimo]

Why does the following code call twice the paint bean on FF (when the page is loaded) and never on MSIE 8 ???

On FF, I see the paint object called twice (and the same PDF is always displayed).

Code:

<rich:panel>
 <h:panelGrid id="previsu">
 <a4j:mediaOutput element="object" value="constante"
 uriAttribute="data" createContent="#{ReportBean.paint}"
 mimeType="application/pdf" id="pdf-preview" cacheable="false"
 session="true" width="300" height="300">
 </a4j:mediaOutput>
 </h:panelGrid>
 </rich:panel>

Bean


 public void paint(OutputStream out, Object data) throws IOException
 {
 i++;

 File file= null;

 log.info(" Debug called " + i);

// flip flop between two test files...

 if (i % 2 == 0)
 file = new File("c:/temp/File2.pdf");
 else
 file = new File("c:/tempFile1.pdf");

 FileInputStream in=null;
 byte[] bytes;


 try {
 in = new FileInputStream (file);
 long length = file.length();

 if (length > Integer.MAX_VALUE) {
 throw new IOException("The file is too big");
 }

 // Create the byte array to hold the data
 bytes = new byte[(int)length];

 // Read in the bytes
 int offset = 0;
 int numRead = 0;
 while (offset < bytes.length
 && (numRead=in.read(bytes, offset, bytes.length-offset)) >= 0) {
 offset += numRead;
 }

 // Ensure all the bytes have been read in
 if (offset < bytes.length) {
 throw new IOException("The file was not completely read: " + file.getName());
 }

 } finally {
 if (in != null) {
 in.close();
 }
 }

 log.info("Paint " + bytes.length + "bytes");
 out.write(bytes);
 }

[rigolissimo]

"rigolissimo" wrote:
Why does the following code call twice the paint bean on FF (when the page is loaded) and never on MSIE 8 ???

On FF, I see the paint object called twice (and the same PDF is always displayed).

This is similar to

http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4038990#4038990

There apaprently never was a clear answer to this problem.

I can't believe there is no clear answer or working example for such an typical use (displaying PDF !) of Ajax and Richfaces...

I would also appreciate an answer on this as I see this as critical for my project (I will not use a4j if this does not work on FF and MSIE).

[rigolissimo]

Before I get told, this is "solved", let me say that I tried adding several ideas mentioned in

http://www.jboss.org/index.html?module=bb&op=viewtopic&p=4038990#4038990

namely adding classid and mimeType.

This does not help.

See what

<a4j:mediaOutput element="object" value="constante"
uriAttribute="data" createContent="#{ReportBean.paint}"
mimeType="application/pdf" id="pdf-preview" cacheable="false"
classid="clsid:CA8A9780-280D-11CF-A24D-444553540000"
session="true" width="300" height="300">
</a4j:mediaOutput>

generates (url shortened)



Note : the classid is not generated
the type (application/pdf) is not generated

Adding directly the following attribute type="application/pdf" instead of mimeType="application/pdf" does not help (no type attribute gets generated on the object).

And this does not display on MSIE 8 ...

Could it be that this bug was closed too quickly
https://jira.jboss.org/jira/browse/AJSF-34
?

If not, could we get the syntax to get a PDF object display using <a4j:mediaOutput on MSIE 8 (and I suspect 6 and 7) ?

[Also why does the paint method get called twice on FF?]

[rigolissimo]

I wish we could edit posts... (the code generated was removed, it needed to be escaped)

See what

<a4j:mediaOutput element="object" value="constante"
uriAttribute="data" createContent="#{ReportBean.paint}"
mimeType="application/pdf" id="pdf-preview" cacheable="false"
classid="clsid:CA8A9780-280D-11CF-A24D-444553540000"
session="true" width="300" height="300">
</a4j:mediaOutput>

generates (url shortened)

<object id="j_id2:pdf-preview" data="/richfaces-reporting/a4j/s/3_2_2.SR1org.ajax4jsf.reA__.jsf" height="300" width="300"></object>

Note : the classid is not generated
the type (application/pdf) is not generated

Adding directly the following attribute type="application/pdf" instead of mimeType="application/pdf" does not help (no type attribute gets generated on the object).

And this does not display on MSIE 8...

Could it be that this bug was closed too quickly
https://jira.jboss.org/jira/browse/AJSF-34?

If not, could we get the syntax to get a PDF object displayed using <a4j:mediaOutput on MSIE 8 (and I suspect 6 and 7) ?

[ilya_shaikovsky]

at first please be patien and not comment on all the thread you found. especially in deprecated forums.. We do not know in which thread you will wait for answer ;) And will not copy solution to all the threads.

under investigation.

[rigolissimo]

"ilya_shaikovsky" wrote:
at first please be patien and not comment on all the thread you found. especially in deprecated forums.. We do not know in which thread you will wait for answer ;) And will not copy solution to all the threads.

under investigation.

Sorry, for the deprecated thread (disabling posting there would be nice).

I will check the answer here.

In the meantime, maybe this can help you, If I generate this code manually, it displays on MSIE 8 and FF (but the paint method is called twice on each, which seems a waste: producing a pdf dynamically is costly) :

<object id="j_id2:pdf-preview" data="http://localhost:8080/richfaces-reporting/a4j/s/3_2_2.SR1org.ajax4jsf.resource.UserResource/ncvA__.jsf" height="300" width="300" type="application/pdf" id="pdf-preview" >
 <param name="src" value="http://localhost:8080/richfaces-reporting/a4j/s/3_2_2.SR1org.ajax4jsf.resource.UserResource/nvA__.jsf" />
</object>

(url shortened)

[ilya_shaikovsky]

https://jira.jboss.org/jira/browse/RF-7669