System Id is changed by Metacat
When a user try to read a document which is based on dtd, currently Metacat will
send back the document with the system id which is regestered in xml_catalog
table. If the system id in the table is different to original one when user
upload to metacat, the document will be changed. This is not what we want: come
in and go out is same. Metacat shouldn't change the system id in operation.
#1 Updated by Jing Tao about 19 years ago
Metacat didn't store the info about docname, public id and system id when user
upload a xml document.
I create new DBSAXNode constructor to store the docname, public id and system id
info and write to database.
When user try to read a document from metacat, if the document is old one and didn't
store the info about docname, public and system id info, Metacat will using the
default info (info from xml_catalog table) to handle it. If xml_nodes table has
the info, it will input the info from xml_nodes table.