Forum OpenACS CMS: edit-this-page now working with Oracle

A client of mine choose Oracle 9.2 as the DBMS for its OpenACS 5.1.4 site, but soon encountered serious problems with edit-this-page.
Making it working required only a small amount of code, but a quite painful debugging session to find, understand and fix it.

I'm posting here the steps I did, because I've not commit rights and it is not easy for me to match the existing open bugs.

sql/oracle/edit-this-page-create.sql
In the last fiew rows of the file the etp_page_revision content type was created with the PostgreSQL syntax content_type__create_type instead of content_type.create_type, thus preventing the correct installation of the data model.

sql/oracle/edit-this-page-create.sql
This fragment of the 'get_relative_url' function:

      if v_object_type = 'content_item' then
        return name;
      end if;

should read instead:

      if v_object_type = 'etp_page_revision' then
        return name;
      end if;

www/etp-setup-2-oracle.xql
The two queries 'register_types' and 'register_folders':

<fullquery name="register_types">
    <querytext>
      select
      content_folder.register_content_type(:folder_id,'content_revision','t')
    </querytext>
</fullquery>

<fullquery name="register_folders">
    <querytext>
      select
      content_folder.register_content_type(:folder_id,'content_folder','f')
    </querytext>
</fullquery>

should read instead:

<fullquery name="register_types">
    <querytext>
      begin
      content_folder.register_content_type(:folder_id,'content_revision','t');
      end;
    </querytext>
</fullquery>

<fullquery name="register_folders">
    <querytext>
      begin
      content_folder.register_content_type(:folder_id,'content_folder','f');
      end;
    </querytext>
</fullquery>

www/etp-edit.tcl Added a row to set latest_revision_id in the following fragment:

	if { ![empty_string_p [db_map update_${attribute}_attribute_clob]] } {
	    db_dml update_${attribute}_attribute_clob "" -blobs  [list $value]
	} else {
	    db_dml update_attribute ""
	}

wich should read instead:

	if { ![empty_string_p [db_map update_${attribute}_attribute_clob]] } {
            set latest_revision_id [etp::get_latest_revision_id $package_id $name]
	    db_dml update_${attribute}_attribute_clob "" -blobs  [list $value]
	} else {
	    db_dml update_attribute ""
	}

www/etp-edit-oracle.xql
Added the column 'mime_type' to the 'get_standard_attribute' query.
Copied the query 'update_content_attribute_clob' here from www/etp-edit-2-oracle.xql
www/etp.adp Changed the line:
```
<if @content_items.object_type@ eq "content_item">
```
into:
```
<if @content_items.object_type@ eq "etp_page_revision">
```
Removed the lines:
```
<if @content_items.rownum@ ne 1>
| <a href="etp-swap?sort_order=@content_items.sort_order@">move up</a>
</if>
```
This is necessary because the Oracle cr_items table lacks the tree_sortkey attribute and, without changing the actual logic, it is not possible the reordering of the dependent items with the 'move up' link.
tcl/etp-procs-oracle.xql
Added the column 'mime_type' to the queries 'get_page_attributes' and 'get_page_attribute_other_revisions'