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]

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/...ateXMLfile.htm
--

Martin Honnen
http://JavaScript.FAQTs.com/

[Naresh Agarwal]

On Jul 21, 4:09 pm, Martin Honnen <[e-mail]:

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 XMLStreamWriterhttp://www.java2s.com/Tutorial/Java/0440__XML/UsingXMLStreamWritertoc...

--

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]

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

On Jul 21, 4:09 pm, Martin Honnen <[e-mail]:

>Java 6 has XMLStreamWriterhttp://www.java2s.com/Tutorial/Java/0440__XML/UsingXMLStreamWritertoc...

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

<http://en.wikipedia.org/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]

Stefan Ram wrote:

Martin Honnen <ma*******@yahoo.dewrites:

>Java 6 has XMLStreamWriter

Often, people use »tag« for »element«.

Here, it seems to be the other way round:

xtw.writeStartElement("http://www.w3.org/TR/REC-html40", "a");
xtw.writeAttribute("href", "http://www.java2s.com");
xtw.writeCharacters("here");
xtw.writeEndElement();

. It seems as »writeEndElement« is supposed
to write the end /tag/, i.e., "</a>".

So, more correct names to me would be:

»writeEndTag()«,
»writeEndOfElement()«, or
»writeElementEnding()«.

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

So writeStartElement 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 <al******@progress.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]

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

Another way to write XML with pre-1.6-Java:

com.sun.org.apache.xml.internal.serialize.XMLSeria lizer serializer =
new com.sun.org.apache.xml.internal.serialize.XMLSeria lizer
( fileOutputStream, outputFormat);
serializer.startDocument();
{ serializer.startElement("", "example", "example",
new com.sun.org.apache.xml.internal.serializer.
AttributesImplSerializer() );
{ final char[] data = "test text" . toCharArray();
serializer.characters( data, 0, data.length );
serializer.endElement( "", "example", "example" ); }
serializer.endDocument(); }}}

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

http://mail-archives.apache.org/mod_...etscape.net%3e

--
Stanimir

[Philippe Poulard]

Stefan Ram a écrit :

Naresh Agarwal <na************@gmail.comwrites:

>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.h...ateFromScratch
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.h...tSerialization

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 !