RE: Memory-saving Prescription for key()? [prompted by - RE: keys : repeated nodes from same key value]

[John Robert Gardner <John dot Robert dot Gardner at East dot Sun dot COM>]

Thanks Mike, I was afraid of that.

jr

#From: Kay Michael <Michael.Kay@icl.com>
#To: "'xsl-list@mulberrytech.com'" <xsl-list@mulberrytech.com>
#Subject: RE: Memory-saving Prescription for key()? [prompted by - RE: keys : 
repeated nodes from same key value]
#MIME-Version: 1.0
#
#Using key() will greatly reduce your search times, but it won't reduce the
#size of the tree in memory: on the contrary, it will increase it.
#
#Mike Kay
#
#> -----Original Message-----
#> From: John Robert Gardner [mailto:John.Robert.Gardner@East.Sun.COM]
#> Sent: 10 August 2000 17:49
#> To: xsl-list@mulberrytech.com
#> Subject: Memory-saving Prescription for key()? [prompted by - 
#> RE: keys:
#> repeated nodes from same key value]
#> 
#> 
#> As long as we're on about keys . . . .
#> 
#> I recall several comments, including in the venerable tome by 
#> Michael, that 
#> key's can be more efficient.  My reason for asking is that I 
#> have a repeated 
#> set of information I ask for -- either 
#> 
#> 	match="//foo[*[contains(name(), 'bar') 
#> 	and contains(., 'my_string')]]">
#> 
#> -or-
#> 
#> 	match="//foobar[*[contains(name(), 'barfoo') 
#> 	and contains(., 'my_string')]]">
#> 
#> In other words, the element type name changes a lot, and the 
#> element type name string for 
#> contains(name(), 'whatever') changes between only one or two 
#> values, and 'my_string' 
#> always stays the same.  
#> 
#> I've got only 5.6 megs of data, and the element type names 
#> are HUGE (it's XMI stuff 
#> from the MOF for some class diagrams) . . . my DOM tree is 
#> bloating to 150 megs, 
#> and I'm looking to trim down my memory footprint . . . is 
#> this a proper diagnosis 
#> for key()? I could make a key for the contains(name(), 
#> 'barfoo'), contains(name(), 
#> 'bar'), and contains(., 'my_string'), if my guess is right?
#> 	
#> ----------------------------------
#> John Robert Gardner, Ph.D.
#> Enterprise Management Architecture
#> Sun Microsystems
#> Burlington, MA 01803
#> <remote />
#> 
#> 
#>  XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list
#> 
#
#
# XSL-List info and archive:  http://www.mulberrytech.com/xsl/xsl-list

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-|
John Robert Gardner, Ph.D.
Enterprise Management Architecture Group
Sun Microsystems Inc.,
MailStop UBUR03-316			
1 Network Drive
Burlington, MA  01803-0903		|  "Earn this"
					|  
Ph. 781-442-0692			|  -Capt. John H. Miller
Fax 781-442-1539			|   Saving Private Ryan
e-mail  john.robert.gardner@sun.com
-----------------------------------
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