= Add configuration option for element substitutes (eg. gco:CharacterString) =

|| '''Date''' || 2010/03/09 ||
|| '''Contact(s)''' || Francois ||
|| '''Last edited''' || [[Timestamp]] ||
|| '''Status''' || Draft ||
|| '''Assigned to release''' || 2.5 ||
|| '''Resources''' || GéoSource [BRGM] ||
|| '''Ticket''' ||  ||

== Overview ==
Actually, GeoNetwork ignore all gco:CharacterString substitutes due to the following lines in schema-substitutes.xml :
{{{
<!-- override all the schema substitutes for gco:CharacterString 
	- we don't want any--> 
	<field name="gco:CharacterString">
	</field> 
}}}
It also provide by default all substitutes of an element (see below).
[[Image(substition-group-all.png)]]


The proposal allows to filter these substitution lists using schema-suggestion configuration file and to be able for some elements to use one or more substitutes of gco:CharacterString. Indeed, some substitute like gmx:FileName or gmx:Anchor could be useful in some situation.

The proposal enhancements are :
 * Add configuration of allowed substitutes for an element (for iso19139 or iso19110 records)
 * Add support for gmx:FileName to be used to store a document in the catalogue (Configuration example to be used for gmd:otherCitationDetails)
 * Suggest only gml:Polygon for bounding polygon element.


=== Proposal Type ===
 * '''Type''': Editor
 * '''App''': !GeoNetwork
 * '''Module''': Editor

=== Links ===
 
 * '''Email discussions''': 
 * '''IRC discussions''': 

=== Voting History ===
 * Proposed for vote by Francois
 * No vote yet

== Proposal details ==
=== Configuration ===

The file schema-substitutes.xml is modified to load gco:CharacterString substitute on startup.
gmx.xsd schema is imported in iso19139 schema.xsd.

=== Configuration for gmd:otherCitationDetails ===
In the schema-suggestion.xml, otherCitationDetails allows use of CharacterString or FileName
{{{
<field name="gmd:otherCitationDetails">
  <suggest name="gco:CharacterString"/>
  <suggest name="gmx:FileName"/>
</field> 
}}}

This will trigger the following in the editor :


[[Image(substition-group-otherCitationDetails.png)]]



Using the gmx:FileName, editors could upload document for the element using the upload panel :


[[Image(substition-group-otherCitationDetails-upload.png)]]

=== Configuration for gmd:polygon ===
{{{
<field name="gmd:polygon">
  <suggest name="gml:Polygon"/>
</field>
}}}
will only suggest gmd:Polygon to editors. Furthermore, the bounding polygon extent map drawing tools only allows to draw polygons. This will make the editor more consistent.

== Backwards Compatibility Issues ==
If no suggestion defined for an element having a gco:CharacterString sub-element, default behavior is applied.

== Risks ==

== Participants ==
 * Francois