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Oracle® Database PL/SQL Packages and Types Reference
10g Release 2 (10.2)

Part Number B14258-01
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123 DBMS_XDBZ

The DBMS_XDBZ package controls the Oracle XML DB repository security, which is based on Access Control Lists (ACLs).

This chapter contains the following topics:


Using DBMS_XDBZ

This section contains topics which relate to using the DBMS_XDBZ package.


Constants

The DBMS_XDBZ package uses the constants shown in following tables.

Table 123-1 DBMS_XDBZ Constants - Name Format

Constant Type Value Description
NAME_FORMAT_SHORT PLS_INTEGER 1 DB user name or LDAP nickname
NAME_FORMAT_DISTINGUISHED PLS_INTEGER 2 LDAP distinguished name

Table 123-2 DBMS_XDBZ Constants - Enable Option

Constant Type Value Description
ENABLE_CONTENTS PLS_INTEGER 1 Enables hierarchy for contents and is used by users when calling enable_hierarchy
ENABLE_RESMETADATA PLS_INTEGER 2 Enables hierarchy for resource metadata, that is, this table will store schema based custom metadata for resources

Table 123-3 DBMS_XDBZ Constants - Enable Option Exercised

Constant Type Value Description
IS_ENABLED_CONTENTS PLS_INTEGER 1 If hierarchy was enabled for contents, that is, the ENABLE_HIERARCHY Procedurewas called with hierarchy_type as ENABLE_CONTENTS
IS_ENABLED_RESMETADATA PLS_INTEGER 2 If hierarchy was enabled for resource metadata, that is, the ENABLE_HIERARCHY Procedure was called with hierarchy_type as ENABLE_RESMETADATA


Summary of DBMS_XDBZ Subprograms

Table 123-4 DBMS_XDBZ Package Subprograms

Method Description
DISABLE_HIERARCHY Procedure
Disables repository support for the specified XMLTYPE table or view
ENABLE_HIERARCHY Procedure
Enables repository support for the specified XMLType table or view
GET_ACLOID Function
Retrieves the ACL Object ID for the specified resource
GET_USERID Function
Retrieves the user ID for the specified user
IS_HIERARCHY_ENABLED Function
Determines if repository support for the specified XMLType table or view is enabled
PURGELDAPCACHE Function
Purges the LDAP nickname cache


DISABLE_HIERARCHY Procedure

This procedure disables repository support for a particular XMLType table or view.

Syntax

DBMS_XDBZ.DISABLE_HIERARCHY(
   object_schema IN VARCHAR2,
   object_name   IN VARCHAR2);

Parameters

Table 123-5 DISABLE_HIERARCHY Procedure Parameters

Parameter Description
object_schema The schema name of the XMLType table or view
object_name The name of the XMLType table or view


ENABLE_HIERARCHY Procedure

This procedure enables repository support for a particular XMLType table or view. This allows the use of a uniform ACL-based security model across all documents in the repository.

Syntax

DBMS_XDBZ.ENABLE_HIERARCHY(
   object_schema   IN   VARCHAR2,
   object_name     IN   VARCHAR2,
   hierarchy_type  IN   PLS_INTEGER := DBMS_XDBZ.ENABLE_CONTENTS);

Parameters

Table 123-6 ENABLE_HIERARCHY Procedure Parameters

Parameter Description
object_schema The schema name of the XMLType table or view
object_name The name of the XMLType table or view
hierarchy_type How to enable the hierarchy.
  • ENABLE_CONTENTS : enable hierarchy for contents, that is, this table will store contents of resources in the repository

  • ENABLE_RESMETADATA : enable hierarchy for resource metadata, that is, this table will store schema based custom metadata for resources

If this subprogram is called on a table, another call will have no effect. Note that you cannot enable hierarchy for both contents and resource metadata.



GET_ACLOID Function

This function retrieves the ACL Object ID for the specified resource, if the repository path is known.

Syntax

DBMS_XDBZ.GET_ACLOID(
   aclpath   IN   VARCHAR2,
   acloid    OUT  RAW)
 RETURN BOOLEAN;

Parameters

Table 123-7 GET_ACLOID Function Parameters

Parameter Description
aclpath ACL resource path for the repository
acloid The returned Object ID

Return Values

Returns TRUE if successful.


GET_USERID Function

This function retrieves the user ID for the specified user name. The local database is searched first, and if found, the USERID is returned in 4-byte database format. Otherwise, the LDAP directory is searched, if available, and if found, the USERID is returned in 4-byte database format.

Syntax

DBMS_XDBZ.GET_USERID(
   username IN  VARCHAR2,
   userid   OUT RAW,
   format   IN  BINARY_INTEGER := NAME_FORMAT_SHORT)
 RETURN BOOLEAN;

Parameters

Table 123-8 GET_USERID Function Parameters

Parameter Description
username Name of the database or LDAP user.
userid Return parameter for the matching user id.
format Format of the specified user name; valid options are:
  • DBMS_XDBZ.NAME_FORMAT_SHORT (default) -- DB user name or LDAP nickname

  • DBMS_XDBZ.NAME_FORMAT_DISTINGUISHIED -- LDAP distinguished name.


Return Values

Returns TRUE if successful.


IS_HIERARCHY_ENABLED Function

This function determines if repository support for the specified XMLType table or view is enabled.

Syntax

DBMS_XDBZ.IS_HIERARCHY_ENABLED(
   object_schema   IN  VARCHAR2,
   object_name     IN  VARCHAR2,
   hierarchy_type  IN  PLS_INTEGER := IS_ENABLED_CONTENTS)
 RETURN BOOLEAN;

Parameters

Table 123-9 IS_HIERARCHY_ENABLED Function Parameters

Parameter Description
object_schema The schema name of the XMLType table or view
object_name The name of the XMLType table or view
hierarchy_type The type of hierarchy to check for.
  • IS_ENABLED_CONTENTS : if hierarchy was enabled for contents, that is, the ENABLE_HIERARCHY Procedurewas called with hierarchy_type as ENABLE_CONTENTS

  • IS_ENABLED_RESMETADATA : if hierarchy was enabled for resource metadata, that is, the ENABLE_HIERARCHY Procedure was called with hierarchy_type as ENABLE_RESMETADATA


Return Values

Returns TRUE if the given XMLTYPE table or view has the XDB Hierarchy enabled with the specified type.


PURGELDAPCACHE Function

This function purges the LDAP nickname cache. Returns TRUE if successful.

Syntax

DBMS_XDBZ.PURGELDAPCACHE
 RETURN BOOLEAN;