Re: [docbook-apps] Using DocBook Stylesheets and Java Heap Problems

["Tobias Anstett [k15t.com]" <tobias@k15t.com>]

Hi Bob,

I changed the code like you proposed. Now I am facing problems with
the PDF output. Every time a new page-sequence is started it is
interpreted as "first" page which has a totally different layout than
the "odd" and "even" pages. Furthermore all pages after the second
page-sequence have a wrong indent by means of admoniations, examples
and text rendering in the nirvana.

Any solutions?

Cheers,
Tobias

On Wed, May 6, 2009 at 12:37 AM, Bob Stayton <bobs@sagehill.net> wrote:
> Hi,
> Yes, that is one workaround that should work in FOP.
>
> Two things need to happen.  The template that matches article will generate
> a page-sequence, so the section content and any elements that come after
> sections (glossary, appendix) must be excluded from that page-sequence
> because you cannot nest page-sequences.  Then you need to put each top level
> section and any elements after sections in in their own page-sequences.
>
> In the template with match="article" in fo components.xsl, change:
>
>  <xsl:apply-templates/>
>
> near the end of the template to
>
>  <xsl:apply-templates
> select="*[not(self::section)][not(preceding-sibling::section)]"/>
>
> That removes sections and any elements after sections from the article
> page-sequence.
>
> Then after the closing tag of the article page-sequence, add this:
>
>  ...
>  </fo:page-sequence>
>
>  <xsl:for-each select="*[self::section or preceding-sibling::section]">
>   <xsl:call-template name="page.sequence">
>     <xsl:with-param name="content">
>       <xsl:apply-templates select="."/>
>     </xsl:with-param>
>   </xsl:call-template>
>  </xsl:for-each>
>
> </xsl:template>
>
> This processes all the sections and elements that follow sections, each in
> their own page-sequence.
>
> Bob Stayton
> Sagehill Enterprises
> bobs@sagehill.net
>
>
> ----- Original Message ----- From: "Tobias Anstett [k15t.com]"
> <tobias@k15t.com>
> To: "Bob Stayton" <bobs@sagehill.net>; "docbook-apps"
> <docbook-apps@lists.oasis-open.org>
> Sent: Tuesday, May 05, 2009 2:28 PM
> Subject: Re: [docbook-apps] Using DocBook Stylesheets and Java Heap Problems
>
>
> ...
> so one possible solution would be to close the existing
> fo:page-sequence and start a new one before every major section (1. 2.
> 3. ...). How could I do something like this? I must use
> fo:page-sequence and not break-after page, but you know best.
>
> Cheers,
> Tobias
>
> On Tue, May 5, 2009 at 6:23 PM, Tobias Anstett [k15t.com]
> <tobias@k15t.com> wrote:
>>
>> Hi Bob,
>>
>> I analyzed the problem by splitting the whole generation chain like
>> you suggested.
>>
>> The problem occurs when the Apache FO processor does the
>> transformation to PDF. After contacting the Apache FO mailinglist I
>> know what my problem is, but not how to solve it.
>>
>> Adrian Cumiskey from the Apache FO mailinglist pointed out to check if
>> I use "many" page sequences in the resulting FO document, because FOP
>> processes documents by page sequence. Thus if I can section the
>> document contents into lots of small page sequence segments this can
>> help a lot with memory consumption.
>>
>> So I checked the generated FO documents (size from 300kb to 20mb) and
>> noticed that there is really one single page sequence that wrapps all
>> the content.
>>
>> => Thus my question is => is there a way to change this behaviour and
>> how would it influence the look of my document?
>>
>> I am exporting in article style using a own page sequence master in
>> the customization layer.
>>
>> Cheers,
>> Tobias
>>
>>
>> On Fri, May 1, 2009 at 7:40 PM, Bob Stayton <bobs@sagehill.net> wrote:
>>>
>>> Hi,
>>> Are you using FOP to apply the XSL stylesheet as well as converting the
>>> XSL-FO to PDF? If so, you might try splitting those functions by first
>>> generating an FO file with Saxon or such, and then processing the FO file
>>> with FOP. That would at least tell you which step was having the problem.
>>>
>>> Bob Stayton
>>> Sagehill Enterprises
>>> bobs@sagehill.net
>>>
>>>
>>> ----- Original Message ----- From: "Tobias Anstett [k15t.com]"
>>> <tobias@k15t.com>
>>> To: "docbook-apps" <docbook-apps@lists.oasis-open.org>
>>> Sent: Friday, May 01, 2009 10:02 AM
>>> Subject: [docbook-apps] Using DocBook Stylesheets and Java Heap Problems
>>>
>>>
>>>> Hi,
>>>>
>>>> we are using the DocBook stylesheets in combination with Apache FOP
>>>> inside a web app. I already assigned more than 1024m to -Xms and -Xmx
>>>> but some (large) DocBook to PDF conversions still cause Java Heap
>>>> Exceptions. Is there a way to reduce the consumed memory ?
>>>>
>>>> Cheers,
>>>> Tobias
>>>>
>>>> ---------------------------------------------------------------------
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>>>> For additional commands, e-mail: docbook-apps-help@lists.oasis-open.org
>>>>
>>>>
>>>>
>>>
>>>
>>
>
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