SAX Parser for creating (not parsing) XML document

[Naresh Agarwal]

Hi

I have been using DOM parser to create XML documents. I want to use an
alternate mechanism to create XML document as size of my XML document
is large and I don;t want the overhead of DOM (where entire tree in
constructed in memory).

Like SAX APIs for parsing XML documents, Is there any thing like SAX
parser/APIs for creating XML documents?

Is there any other standard mechanism of creating XML document,
without requiring the entire tree structure to be constructed in
memory?

Thanks,
Naresh

[Martin Honnen]

Re: SAX Parser for creating (not parsing) XML document

Naresh Agarwal wrote:

Hi
>
I have been using DOM parser to create XML documents. I want to use an
alternate mechanism to create XML document as size of my XML document
is large and I don;t want the overhead of DOM (where entire tree in
constructed in memory).
>
Like SAX APIs for parsing XML documents, Is there any thing like SAX
parser/APIs for creating XML documents?

Java 6 has XMLStreamWriter

http://www.java2s.com/Tutorial/Java/0440__XML/UsingXMLStreamWritertocreateXMLfile.htm

--

Martin Honnen

http://JavaScript.FAQTs.com/

[Naresh Agarwal]

Re: SAX Parser for creating (not parsing) XML document

On Jul 21, 4:09 pm, Martin Honnen <mahotr...@yaho o.dewrote:

Naresh Agarwal wrote:

Hi

>

I have been using DOM parser to create XML documents. I want to use an
alternate mechanism to create XML document as size of my XML document
is large and I don;t want the overhead of DOM (where entire tree in
constructed in memory).

>

Like SAX APIs for parsing XML documents, Is there any thing like SAX
parser/APIs for creating XML documents?

>
Java 6 has XMLStreamWriter http://www.java2s.com/Tutorial/Java/0440__XML/UsingXMLStreamW ritertoc...
>
--
>
Martin Honnen
http://JavaScript.FAQTs.com/

Thanks. Is there any thing available for this with Java 1.5, any open
source app?

Best
Naresh

[Stanimir Stamenkov]

Re: SAX Parser for creating (not parsing) XML document

Mon, 21 Jul 2008 21:46:42 -0700 (PDT), /Naresh Agarwal/:

On Jul 21, 4:09 pm, Martin Honnen <mahotr...@yaho o.dewrote:
>

>Java 6 has XMLStreamWriter http://www.java2s.com/Tutorial/Java/0440__XML/UsingXMLStreamW ritertoc...

>
Thanks. Is there any thing available for this with Java 1.5, any open
source app?

<http://en.wikipedia.or g/wiki/StAXlists three implementations :

* http://stax.codehaus.org/ Reference Implementation
* Woodstox Open source StAX implementation
* https://sjsxp.dev.java.net is Sun's Stax implementation

--
Stanimir

[Tony Lavinio]

Re: SAX Parser for creating (not parsing) XML document

Stefan Ram wrote:

Martin Honnen <mahotrash@yaho o.dewrites:

>Java 6 has XMLStreamWriter

>
Often, people use »tag« for »element«.
>
Here, it seems to be the other way round:
>
xtw.writeStartE lement("http://www.w3.org/TR/REC-html40", "a");
xtw.writeAttrib ute("href", "http://www.java2s.com" );
xtw.writeCharac ters("here");
xtw.writeEndEle ment();
>
. It seems as »writeEndElemen t« is supposed
to write the end /tag/, i.e., "</a>".
>
So, more correct names to me would be:
>
»writeEndTag()« ,
»writeEndOfElem ent()«, or
»writeElementEn ding()«.

You're not writing tags with this, you're writing /events/.

So writeStartEleme nt means you are sending the StartElement
/event/ into the stream. writeEndElement means you are
sending the EndElement /event/ into the stream.

When using XMLStreamWriter , you must remember that you are
acting as the parser.


--
Tony Lavinio <DataDirect <Stylus Studio XML <alavinio@progre ss.com
XQuery, XSLT, XML Schema and EDI Toolset <http://www.stylusstudio.com/
<There is no problem that brute force and ignorance cannot overcome <>

[Stanimir Stamenkov]

Re: SAX Parser for creating (not parsing) XML document

22 Jul 2008 16:31:54 GMT, /Stefan Ram/:

Another way to write XML with pre-1.6-Java:
>
com.sun.org.apa che.xml.interna l.serialize.XML Serializer serializer =
new com.sun.org.apa che.xml.interna l.serialize.XML Serializer
( fileOutputStrea m, outputFormat);
serializer.star tDocument();
{ serializer.star tElement("", "example", "example",
new com.sun.org.apa che.xml.interna l.serializer.
AttributesImplS erializer() );
{ final char[] data = "test text" . toCharArray();
serializer.char acters( data, 0, data.length );
serializer.endE lement( "", "example", "example" ); }
serializer.endD ocument(); }}}

Here's more standard way of doing it without requiring
implementation specific classes (works with Java 1.4):

http://mail-archives.apache.org/mod_mbox/xml-xalan-j-users/200801.mbox/%3c47972921.1020300@netscape.net%3e

--
Stanimir

[Philippe Poulard]

Re: SAX Parser for creating (not parsing) XML document

Stefan Ram a écrit :

Naresh Agarwal <naresh.agarwal @gmail.comwrite s:

>Is there any thing available for this with Java 1.5, any open
>source app?

>
Writing XML is simpler than reading XML.
>
So, sometimes, one can get by with no library at all:
>
outStream.print ( "<" );
outStream.print ( type );
outStream.print ( ">" );
>

hi,

IMHO, this is one of the worst practice

outStream.print ( "<" );
outStream.print ( type );
outStream.print ( ">" );
outStream.print ( "if (a<b ) {}" );

you'll have too many occasions to break your XML result ; rely on tools
made for that purpose that will produce well-formed XML

you can also use templates for creating SAX documents with RefleX :

http://reflex.gforge.inria.fr/tips.html#createFromScratch

of course, you can loop on whatever you want to create content (merge
thousand XML files for example:
http://reflex.gforge.inria.fr/tips.h...rsingFragments )

then pipe the created doc to an XSLT serializer :

http://reflex.gforge.inria.fr/tips.html#xsltSerialization

you can use it from the command line, embed it in a program, or deploy
it within a web server

tutorials are available here :

http://reflex.gforge.inria.fr/tutorial.html

I will talk about all that stuff at Balisage 2008 in Montreal, with a
focus on schema languages

http://www.balisage.net/Program.html#h245p

--
Cordialement,

///
(. .)
--------ooO--(_)--Ooo--------
| Philippe Poulard |
-----------------------------

http://reflex.gforge.inria.fr/

Have the RefleX !