Hi Gary,
You have the right idea with the field, but field will put a space between
tokens in different elements, so the value to search for would be "deny
execute". I would not say that fragments will negatively affect performance
necessarily, but they should be used with care.
Here is an example that shows the way the field works (you will see a match for
the space-separated string, and no match for the concatenated one):
xquery version "1.0-ml";
(: have a field named "gary" that includes "Permission" :)
xdmp:document-insert("/gary.xml",
<permissions>
<Permission>
<access>deny</access>
<name>execute</name>
</Permission>
<Permission>
<access>grant</access>
<name>traverse</name>
</Permission>
</permissions>)
;
xdmp:estimate(
cts:search(fn:doc("/gary.xml"),
cts:field-word-query("gary", "deny execute")) ),
xdmp:estimate(
cts:search(fn:doc("/gary.xml"),
cts:field-word-query("gary", "denyexecute")) )
-Danny
From: [email protected]
[mailto:[email protected]] On Behalf Of Gary Larsen
Sent: Tuesday, July 19, 2011 9:44 AM
To: 'General MarkLogic Developer Discussion'
Subject: Re: [MarkLogic Dev General] Question on fields
Me again.
In addition I've read that sub-fragments can negatively affect performance (the
Permission fragment would be a descendant in a SecurityObject fragment). Is
this true?
gary
From: [email protected]
[mailto:[email protected]] On Behalf Of Gary Larsen
Sent: Tuesday, July 19, 2011 12:36 PM
To: 'General MarkLogic Developer Discussion'
Subject: [MarkLogic Dev General] Question on fields
I need to filter on the data structure below using a combination of both the
<name> and <access> values.
<permissions>
<Permission>
<access>deny</access>
<name>execute</name>
</Permission>
<Permission>
<access>grant</access>
<name>traverse</name>
</Permission>
</permissions>
It seems one way to accomplish this is to create a fragment root on the
Permission element. (This would create very large number of fragments.)
I also thought that a field defined on the Permission element (the only
include, no excludes) would work - as long as the descendant values were always
appended in order. For example:
cts:field-word-query('permissionField', 'denyexecute')
Can I rely on that? Are there other possible solutions?
Thanks,
gary
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