Validating XML files with schema in Oracle PL / SQL

Question

I have a requirement to check the input file on XSD. Both will be in the server file system.

I looked dbms_xmlschema, but I had problems with his work.

Could it be easier to do this with some Java?
What is the simplest class I could add to the database?

Here is a simple example:

DECLARE
  v_schema_url       VARCHAR2(200) := 'http://www.example.com/schema.xsd';
  v_blob             bLOB;
  v_clob             CLOB;
  v_xml XMLTYPE;
BEGIN
  begin
    dbms_xmlschema.deleteschema(v_schema_url);
  exception
    when others then
     null;
  end;

  dbms_xmlschema.registerSchema(schemaURL => v_schema_url,
                                schemaDoc => '
<xs:schema targetNamespace="http://www.example.com" 
xmlns:ns="http://www.example.com" 
xmlns:xs="http://www.w3.org/2001/XMLSchema" 
elementFormDefault="qualified" attributeFormDefault="unqualified" version="3.0">
<xs:element name="something"  type="xs:string"/>
</xs:schema>',
                                local => TRUE);

  v_xml := XMLTYPE.createxml('<something xmlns="http://www.xx.com" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
xsi:schemaLocation="http://www.example.com/schema.xsd">
data
</something>');

  IF v_xml.isschemavalid(v_schema_url) = 1 THEN
    dbms_output.put_line('valid');
  ELSE
    dbms_output.put_line('not valid');
  END IF;
END;

This causes the following error:

ORA-01031: insufficient privileges
ORA-06512: at "XDB.DBMS_XDBZ0", line 275
ORA-06512: at "XDB.DBMS_XDBZ", line 7
ORA-06512: at line 1
ORA-06512: at "XDB.DBMS_XMLSCHEMA_INT", line 3
ORA-06512: at "XDB.DBMS_XMLSCHEMA", line 14
ORA-06512: at line 12

Answer 1

Update

The following privileges are required to register an XML schema:

grant alter session to <USER>;
grant create type to <USER>; /* required when gentypes => true */
grant create table to <USER>; /* required when gentables => true */

For some reason, this is not enough if these privileges are granted indirectly through roles, but privileges should be granted directly to the schema / user.

Original answer

, gentables gentypes insufficient privileges. , , , . , .

Oracle Database 11g Release 11.2.0.1.0

gentypes = > true, gentables = > true

dbms_xmlschema.registerschema(schemaurl => name,
                              schemadoc => xmltype(schema),
                              local => true
                              --gentypes => false,
                              --gentables => false
                              );

ORA-01031: insufficient privileges
ORA-06512: at "XDB.DBMS_XMLSCHEMA_INT", line 55
ORA-06512: at "XDB.DBMS_XMLSCHEMA", line 159
ORA-06512: at "JANI.XML_VALIDATOR", line 38
ORA-06512: at line 7

gentypes = > false, gentables = > true

dbms_xmlschema.registerschema(schemaurl => name,
                              schemadoc => xmltype(schema),
                              local => true,
                              gentypes => false
                              --gentables => false
                              );

ORA-31084: error while creating table "JANI"."example873_TAB" for element "example"
ORA-01031: insufficient privileges
ORA-06512: at "XDB.DBMS_XMLSCHEMA_INT", line 55
ORA-06512: at "XDB.DBMS_XMLSCHEMA", line 159
ORA-06512: at "JANI.XML_VALIDATOR", line 38
ORA-06512: at line 7

gentypes = > true, gentables = > false

dbms_xmlschema.registerschema(schemaurl => name,
                              schemadoc => xmltype(schema),
                              local => true,
                              --gentypes => false
                              gentables => false
                              );

ORA-01031: insufficient privileges
ORA-06512: at "XDB.DBMS_XMLSCHEMA_INT", line 55
ORA-06512: at "XDB.DBMS_XMLSCHEMA", line 159
ORA-06512: at "JANI.XML_VALIDATOR", line 38
ORA-06512: at line 7

gentypes = > false, gentables = > false

dbms_xmlschema.registerschema(schemaurl => name,
                              schemadoc => xmltype(schema),
                              local => true,
                              gentypes => false,
                              gentables => false
                              );

PL/SQL procedure successfully completed.

Answer 2

ALTER SESSION.

Answer 3

, . user272735 , , ( ).

/* Formatted on 21/08/2012 12:52:47 (QP5 v5.115.810.9015) */
DECLARE
   -- Local variables here
   res          BOOLEAN;
   tempXML      XMLTYPE;
   xmlDoc       XMLTYPE;
   xmlSchema    XMLTYPE;
   schemaURL    VARCHAR2 (256) := 'testcase.xsd';
BEGIN
   dbms_xmlSchema.deleteSchema (schemaURL, 4);
   -- Test statements here
   xmlSchema :=
      xmlType('<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:xdb="http://xmlns.oracle.com/xdb"
elementFormDefault="qualified" attributeFormDefault="unqualified">
<xs:element name="root" xdb:defaultTable="ROOT_TABLE">
<xs:complexType>
<xs:sequence>
<xs:element name="child1"/>
<xs:element name="child2"/>
</xs:sequence>
</xs:complexType>
</xs:element>
</xs:schema>
');
    -- http://stackoverflow.com/questions/82047/validating-xml-files-against-schema-in-oracle-pl-sql
    dbms_xmlschema.registerschema(schemaurl => schemaURL,
                                  schemadoc => xmlSchema,
                                  local => true,
                                  gentypes => false,
                                  gentables => false
                                  );
   xmlDoc :=
      xmltype('<root xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="'
              || schemaURL
              || '"><child1>foo</child1><child2>bar</child2></root>');
   xmlDoc.schemaValidate ();
   -- if we are here, xml is valid
   DBMS_OUTPUT.put_line ('OK');
exception
    when others then
    DBMS_OUTPUT.put_line (SQLErrm);
END;

Answer 4

, Oracle , , , . , 9.2, , 10,2 11.

, , .

Answer 5

XSD , . :

grant create table to <user>;
grant create type to <user>;
grant create trigger to <user>;

Answer 6

, , XDB ( Oracle XML DataBase) . .