For an XML document set that contains the <book> tag declared for different document types, you may want to create a distinct book section for each document type. The following scenario shows how to create book sections for each document type to improve search capability.
Assume that mydocname1 is declared as an XML document type (root element) as follows:
<!DOCTYPE mydocname1 ... [...
Within mydocname1, the element <book> is declared. For this tag, you can create a section named mybooksec1 that is sensitive to the tag's document type as follows:
begin
ctx_ddl.create_section_group('myxmlgroup', 'XML_SECTION_GROUP');
ctx_ddl.add_zone_section('myxmlgroup', 'mybooksec1', 'mydocname1(book)');
end;
Assume that mydocname2 is declared as another XML document type (root element) as follows:
<!DOCTYPE mydocname2 ... [...
Within mydocname2, the element <book> is declared. For this tag, you can create a section named mybooksec2 that is sensitive to the tag's document type as follows:
begin
ctx_ddl.create_section_group('myxmlgroup', 'XML_SECTION_GROUP');
ctx_ddl.add_zone_section('myxmlgroup', 'mybooksec2', 'mydocname2(book)');
end;
To query within the section mybooksec1, use WITHIN as follows:
'oracle within mybooksec1'