Bug #2380: returnfield system needs to implement more xpath - Metacat - Ecoinformatics Redmine

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Bug #2380

closed

returnfield system needs to implement more xpath

Added by Chad Berkley over 18 years ago. Updated about 18 years ago.

Status:

Resolved

Priority:

Immediate

Assignee:

Saurabh Garg

Category:

metacat

Target version:

Unspecified

Start date:

03/09/2006

Due date:

% Done:

Estimated time:

Bugzilla-Id:

2380

Description

The XPath system used when processing the returnfield params is inadequate when
you want to proceess data out of a document that contains a lot of xml
attributes. For instance, if you have an entity like this:

It is impossible to pull the 'value' attribute from the xml based on the 'name'
attribute. The correct xpath query for pulling the value 'y' from this is
/sometag[@name=x]/@value. This syntax is not supported by the returnfield
processor, but it should be.

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Updated by Saurabh Garg about 18 years ago

If I understand the bug correctly, then this functionality is already present in
src/edu/ucsb/nceas/metacat/QuerySpecification.java. So what needs to be investigated first is that if the functionality is not working. Here is a test query which worked fine for me

&lt;pathquery version="1.0"&gt;
      &lt;querytitle&gt;unspecified&lt;/querytitle&gt;
    &lt;returnfield&gt;@docid&lt;/returnfield&gt;
&lt;returndoctype&gt;eml://ecoinformatics.org/eml-2.0.1&lt;/returndoctype&gt;
&lt;returndoctype&gt;eml://ecoinformatics.org/eml-2.0.0&lt;/returndoctype&gt;
      &lt;querygroup operator="UNION"&gt;
        &lt;queryterm casesensitive="false" searchmode="contains"&gt;
          &lt;value&gt;gce&lt;/value&gt;
        &lt;/queryterm&gt;
      &lt;/querygroup&gt;
    &lt;/pathquery&gt;

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Updated by Chad Berkley about 18 years ago

this is a duplicate of another ecogrid bug. the query statement in sid's comment does not do what the query statement in my original posting does. i.e. @docid is not the same as /x[@docid='x']/@value. I need to be able to be able to pull one attribute based on the value of another in the same element.