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196 DBMS_XMLSCHEMA_ANNOTATE

The DBMS_XMLSCHEMA_ANNOTATE package provides an interface to manage and configure the structured storage model, mainly through the use of pre-registration schema annotations.

This chapter contains the following topics:


Using DBMS_XMLSCHEMA_ANNOTATE


Overview

The DBMS_XMLSCHEMA_ANNOTATE package contains procedures to manage and configure the structured storage model, mainly through the use of pre-registration schema annotations. Schema annotations influence the way the XML data is stored. For example, the default table annotation assigns a user-provided name to an XML element instead of allowing the database to generate a system name. Consequently, query plans are more readable and it is easier to create constraints on that table.


Security Model

Owned by XDB, the DBMS_XMLSCHEMA_ANNOTATE package must be created by SYS or XDB. The EXECUTE privilege is granted to PUBLIC. Subprograms in this package are executed using the privileges of the current user.


Summary of DBMS_XMLSCHEMA_ANNOTATE Subprograms

Table 196-1 DBMS_XMLSCHEMA_ANNOTATE Package Subprograms

Subprogram Description

ADDXDBNAMESPACE Procedure

Adds the XDB namespace required for XDB annotation

DISABLEDEFAULTTABLECREATION Procedure

Prevents the creation of a table for the top-level element by adding a default table attribute with an empty value to the element

DISABLEMAINTAINDOM Procedure

Sets the DOM fidelity attribute to FALSE

ENABLEDEFAULTTABLECREATION Procedure

Enables the creation of ALL top level tables by removing the empty default table name annotation

ENABLEMAINTAINDOM Procedure

Sets the DOM fidelity attribute to TRUE

GETSCHEMAANNOTATIONS Function

Creates a document containing the differences between the annotated XML schema and the original XML schema

GETSIDXDEFFROMVIEW Function

Takes a XMLTABLE view definition on a xmltype column or table and it returns a CLOB which can be used as parameter to create a structured xmlindex that backs up the XMLTABLE view as relational table

PRINTWARNINGS Procedure

Lets a user raise or suppress a warning if an annotation maps to zero nodes in the XML schema

REMOVEANYSTORAGE Procedure

Removes the setting of the SQL type from the ANY child of the complex type with the given name

REMOVEDEFAULTTABLE Procedure

Removes any default table attribute given for the element. After calling this procedure, the system generates table names

REMOVEMAINTAINDOM Procedure

Removes all annotations used to maintain DOM from the given schema

REMOVEOUTOFLINE Procedure

Removes any existing SQLInline attributes to prevent out-of-line storage

REMOVESQLCOLLTYPE Procedure

Removes a SQL collection type.

REMOVESQLNAME Procedure

Removes a SQLNAME from a global element

REMOVESQLTYPE Procedure

Removes a SQL type

REMOVESQLTYPEMAPPING Procedure

Removes the SQL type mapping for the given schema type.

REMOVETABLEPROPS Procedure

Removes the table storage properties from the CREATE TABLE statement

REMOVETIMESTAMPWITHTIMEZONE Procedure

Removes he setting of the TimeStampWithTimeZone datatype from all dateTime typed elements in the XML schema

SETANYSTORAGE Procedure

Assigns a SQL datatype to the ANY child of the complex type with the given name

SETDEFAULTTABLE Procedure

Sets the name of the table for the specified global element

SETOUTOFLINE Procedure

Sets the SQLInline attribute to FALSE

SETSCHEMAANNOTATATIONS Procedure

Takes the annotated differences resulting from a call to DBMS_XMLSCHEMA_ANNOTATE.GETSCHEMAANNOTATIONS and patches them into the provided XML schema

SETSQLCOLLTYPE Procedure

Assigns a SQL type name for a collection

SETSQLNAME Procedure

Assigns a name to the SQL attribute that corresponds to an element defined in the XML schema

SETSQLTYPE Procedure

Assigns a SQL type to a global object

SETSQLTYPEMAPPING Procedure

Defines a mapping of schema type and SQL type

SETTABLEPROPS Procedure

Specifies properties in the TABLE storage clause that is appended to the default CREATE TABLE statement

SETTIMESTAMPWITHTIMEZONE Procedure

Sets the TIMESTAMPWITHTIMEZONE datatype to all dateTime typed elements in the XML schema



ADDXDBNAMESPACE Procedure

This procedure adds the XDB namespace required for XDB annotation.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.ADDXDBNAMESPACE (
   xmlschema      IN OUT XMLTYPE);

Parameters

Table 196-2 ADDXDBNAMESPACE Procedure Parameters

Parameter Description

xmschema

Gets an XML Schema as XMLTYPE, performs the annotation and returns it


Usage Notes

This procedure is called implicitly by any other procedure that adds a schema annotation. Since there is no reason to add an XDB namespace without other annotations, this procedure is most likely called by other annotations procedures and not by the user directly.


DISABLEDEFAULTTABLECREATION Procedure

This procedure prevents the creation of a table for the top-level element by adding a default table attribute with an empty value to the element. The first overload applies to a specified top-level element and the second applies to all top-level elements. The procedure always overwrites. This is equivalent to using the schema annotation xdb:defaultTable="" for the top-level element or elements.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.DISABLEDEFAULTTABLECREATION (
   xmlschema         IN OUT XMLType,  
   globalElementName IN VARCHAR2);
DBMS_XMLSCHEMA_ANNOTATE.DISABLEDEFAULTTABLECREATION (
   xmlschema         IN OUT XMLType);

Parameters

Table 196-3 DISABLEDEFAULTTABLECREATION Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated

globalElementName

Name of the global element in the schema


Example

The purchaseOrder element will have an annotation similar to xdb:defaultTable="".

DECLARE
   xml_schema   XMLTYPE;
BEGIN
   SELECT out INTO xml_schema FROM annotation_tab;
   DBMS_XMLSCHEMA_ANNOTATE.DISABLEDEFAULTTABLECREATION(xml_schema,
                                            'purchaseOrder');
   UPDATE annotation_tab SET out = xml_schema;
END;
/

DISABLEMAINTAINDOM Procedure

This procedure sets the DOM fidelity attribute to FALSE.

There are two overloads. The first sets DOM fidelity attribute to FALSE for all complex types, and the second sets it to FALSE for the named complex type. This is equivalent to adding xdb:maintainDOM="false" on all or specified complex types respectively.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.DISABLEMAINTAINDOM (
   xmlschema       IN OUT XMLType, 
   overwrite       IN BOOLEAN default TRUE);
DBMS_XMLSCHEMA_ANNOTATE.DISABLEMAINTAINDOM (
   xmlschema       IN OUT XMLType, 
   complexTypeName IN VARCHAR2,  
   overwrite       IN BOOLEAN default TRUE);

Parameters

Table 196-4 DISABLEMAINTAINDOM Procedure Parameters

Parameter Description

xmlschema

The XML schema to be annotated

complexTypeName

The name of the complex type

overwrite

A boolean that indicates whether or not the procedure overwrites element attributes. The default is TRUE



ENABLEDEFAULTTABLECREATION Procedure

This procedure enables the creation of ALL top level tables by removing the empty default table name annotation.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.ENABLEDEFAULTTABLECREATION (
   xmlschema            IN OUT  XMLTYPE);

DBMS_XMLSCHEMA_ANNOTATE.ENABLEDEFAULTTABLECREATION (
   xmlschema            IN OUT  XMLTYPE,
   globalElementName    IN      VARCHAR2););

Parameters

Table 196-5 ENABLEDEFAULTTABLECREATION Procedure Parameters

Parameter Description

xmlschema

The XML schema to be annotated

gloablElementName

Name of the global element in the schema


Usage Notes

This procedure does not affect elements that have a default table name.


ENABLEMAINTAINDOM Procedure

This procedure sets the DOM fidelity attribute to TRUE.

There are two overloads. The first sets DOM fidelity attribute to TRUE for all complex types, and the second sets it to TRUE for the named complex type.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.ENABLEMAINTAINDOM (
   xmlschema       IN OUT XMLType, 
   overwrite       IN BOOLEAN default TRUE);
DBMS_XMLSCHEMA_ANNOTATE.ENABLEMAINTAINDOM (
   xmlschema        IN OUT XMLType, 
   complexTypeName  IN VARCHAR2,  
   overwrite        IN BOOLEAN default TRUE);

Parameters

Table 196-6 ENABLEMAINTAINDOM Procedure Parameters

Parameter Description

xmlschema

The XML schema to be annotated

complexTypeName

The name of the complex type

overwrite

A boolean that indicates whether or not the procedure overwrites element attributes. The default is TRUE



GETSCHEMAANNOTATIONS Function

This function creates a document containing the differences between the annotated XML schema and the original XML schema.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.GETSCHEMAANNOTATIONS (
   xmlschema IN xmlType) 
  RETURN XMLType;

Parameters

Table 196-7 GETSCHEMAANNOTATIONS Function Parameters

Parameter Description

xmlschema

The original XML schema


Return Values

This function returns the document annotations.xml as an XMLType.

Usage Notes

This function saves all annotations in one document, named annotations, and returns it. With this document, you can apply all annotations to a non-annotated schema, using DBMS_XMLSCHEMA_ANNOTATE.GETSCHEMAANNOTATIONS.

DBMS_XMLSCHEMA_ANNOTATE.GETSCHEMAANNOTATIONS is not available on Oracle Database release 10.2 (only Oracle Database release 11.x).

Example

For an example of DBMS_XMLSCHEMA_ANNOTATE.GETSCHEMAANNOTATIONS, see the example in SETSCHEMAANNOTATATIONS Procedure.


GETSIDXDEFFROMVIEW Function

This function takes a XMLTABLE view definition on a xmltype column or table and it returns a CLOB which can be used as parameter to create a structured xmlindex that backs up the XMLTABLE view as relational table.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.GETSIDXDEFFROMVIEW (
   viewName   IN xmlType) 
  RETURN CLOB;

Parameters

Table 196-8 GETSIDXDEFFROMVIEW Function Parameters

Parameter Description

viewName

The original XML schema


Return Values

This function returns a CLOB which can be used as parameter to create a structured xmlindex that backs up the XMLTABLE view as relational table.


PRINTWARNINGS Procedure

This procedure lets a user raise or suppress a warning if an annotation maps to zero nodes in the XML schema.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.PRINTWARNINGS (
   value       IN   BOOLEAN DEFAULT TRUE);

Parameters

Table 196-9 PRINTWARNINGS Procedure Parameters

Parameter Description

val

For the NO MATCHING ELEMENTS FOUND error message to be raised val must be set to TRUE. In cases in which user wishes to suppress this warning, set to FALSE.


Usage Notes

If an annotation maps to more than one node in the XML schema, this raise the error ANNOTATION MAPS TO MULTIPLE ELEMENTS. In this case no annotation is performed, and the user must correct the parameters to the procedure call to refer to a unique node in the XML schema.


REMOVEANYSTORAGE Procedure

This procedure removes the setting of the SQL type from the ANY child of the complex type with the given name.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.REMOVEANYSTORAGE (
   xmlschema       IN OUT XMLType, 
   complexTypeName IN VARCHAR2);

Parameters

Table 196-10 REMOVEANYSTORAGE Procedure Parameters

Parameter Description

xmlschema

The XML schema to be annotated.

complexTypeName

The name of the complex type.


Usage Notes

This procedure reverses the SETANYSTORAGE Procedure.


REMOVEDEFAULTTABLE Procedure

This procedure removes any default table attribute given for the element. After calling this procedure, the system generates table names. This procedure always overwrites.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.REMOVEDEFAULTTABLE (
   xmlschema          IN OUT XMLTYPE, 
   globalElementName  IN     VARCHAR2);

Parameters

Table 196-11 REMOVEDEFAULTTABLE Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated

globalElementName

Name of the global element in the schema


Example

Annotations can be verified anytime using "select out from annotation_tab".

 
--The purchaseOrder element will have no annotation for defaultTable.
DECLARE
   xml_schema XMLTYPE;
BEGIN
   SELECT out INTO xml_schema FROM annotation_tab;
   DBMS_XMLSCHEMA_ANNOTATE.REMOVEDEFAULTTABLE(xml_schema,
                                            'purchaseOrder');
   UPDATE annotation_tab SET out = xml_schema;
END;
/

REMOVEMAINTAINDOM Procedure

This procedure removes all annotations used to maintain DOM from the given schema.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.REMOVEMAINTAINDOM (
   xmlschema    IN OUT XMLType);

Parameters

Table 196-12 REMOVEMAINTAINDOM Procedure Parameters

Parameter Description

xmlschema

The XML schema to be annotated



REMOVEOUTOFLINE Procedure

This procedure removes any existing SQLInline attributes to prevent out-of-line storage. There are three overloads.

Syntax

Removes the SQLInline attribute for the named element.

DBMS_XMLSCHEMA_ANNOTATE.REMOVEOUTOFLINE (
   xmlschema           IN OUT  XMLType, 
   elementName         IN      VARCHAR2, 
   elementType         IN      VARCHAR2, 
   overwrite           IN      BOOLEAN default TRUE);

Removes the SQLInline attribute for the object specified by its global object and local element names.

DBMS_XMLSCHEMA_ANNOTATE.REMOVEOUTOFLINE (
   xmlschema          IN OUT  XMLType, 
   globalObject       IN      VARCHAR2, 
   globalObjectName   IN      VARCHAR2, 
   localElementName   IN      VARCHAR2);

Removes the SQLInline attribute for the referenced global element.

DBMS_XMLSCHEMA_ANNOTATE.REMOVEOUTOFLINE (
   xmlschema         IN OUT  XMLType,
   reference         IN      VARCHAR2);

Parameters

Table 196-13 REMOVEMAKEOUTOFLINE Procedure Parameters

Parameter Description

xmlschema

The XML schema to be annotated

elementName

The element name

elementType

The element type

globalObject

The global object (global complex type or global element)

globalObjectName

The name of the global object

localElementName

The name of a local element that descends from the global element

reference

A reference to a global element

overwrite

A boolean that indicates whether or not the procedure overwrites element attributes. The default is TRUE.


Usage Notes

This procedure reverses SETOUTOFLINE Procedure.


REMOVESQLCOLLTYPE Procedure

This procedure removes a SQL collection type. The first overload removes the SQL collection type corresponding to the named element and the second overload removes the type from the XML element inside the complex type.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.REMOVESQLCOLLTYPE (
   xmlschema   IN OUT XMLType, 
   elementName IN VARCHAR2);
DBMS_XMLSCHEMA_ANNOTATE.REMOVESQLCOLLTYPE (
   xmlschema        IN OUT XMLType, 
   globalObject     IN VARCHAR2, 
   globalName       IN VARCHAR2, 
   localElementName IN VARCHAR2);

Parameters

Table 196-14 REMOVESQLCOLLTYPE Procedure Parameters

Parameter Description

xmlschema

The XML schema to be annotated

elementName

The element name

globalObject

The global object (global complex type or global element)

globalName

The name of the global object

localElementName

The name of a local element that descends from the global element


Usage Notes

This procedure reverses the SETSQLCOLLTYPE Procedure.


REMOVESQLNAME Procedure

This procedure removes a SQLNAME from a global element.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.REMOVESQLNAME (
   xmlschema          IN OUT  XMLType,
   globalObject       IN      VARCHAR2, 
   globalObjectName   IN      VARCHAR2,
   localObject        IN      VARCHAR2, 
   localObjectName    IN      VARCHAR2, 
   sqlName            IN      VARCHAR2, 
   overwrite          IN      BOOLEAN DEFAULT TRUE);

Parameters

Table 196-15 REMOVESQLNAME Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated

globalObject

Global object (global complex type or global element)

globalObjectName

Name of the global object

localObject

Object descended from the global object

localObjectName

Name of the local object

sqlName

Name of the SQL attribute that corresponds to the element defined in the XML schema

overwrite

Boolean that indicates whether or not the procedure overwrites element attributes. The default is TRUE.


Example

The shipTo element will have an annotation similar to xdb:SQLName="SHIPTO_SQLNAME".

DECLARE
   xml_schema   XMLTYPE;
BEGIN
   SELECT out INTO xml_schema FROM annotation_tab;
   DBMS_XMLSCHEMA_ANNOTATE.SETSQLNAME (xml_schema, 
                                        'element', 'purchaseOrder', 
                                        'element', 'shipTo',
                                        'SHIPTO_SQLNAME');   
   UPDATE annotation_tab SET out = xml_schema;
END;
/

REMOVESQLTYPE Procedure

This procedure removes a SQL type. The first overload removes a SQL type from a global element and the second overload removes the type from a global element inside the complex type.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.REMOVESQLTYPE (
   xmlschema in out XMLType,  
   globalElementName   IN      VARCHAR2);
DBMS_XMLSCHEMA_ANNOTATE.REMOVESQLTYPE (
   xmlschema           IN OUT  XMLTYPE, 
   globalObject        IN      VARCHAR2, 
   globalObjectName    IN      VARCHAR2, 
   localObject         IN      VARCHAR2, 
   localObjectName     IN      VARCHAR2);

Parameters

Table 196-16 REMOVESQLTYPE Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated.

globalObject

Global object (global complex type or global element)

globalElementName

Name of the global element.

globalObjectName

Name of the global object

localObject

Object descended from the global object

localObjectName

Name of the local object


Usage Notes

This procedure reverses the SETSQLTYPE Procedure.


REMOVESQLTYPEMAPPING Procedure

This procedure removes the SQL type mapping for the given schema type.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.REMOVESQLTYPEMAPPING (
   xmlschema        IN OUT  XMLTYPE,
   schemaTypeName   IN      VARCHAR2);

Parameters

Table 196-17 REMOVESQLTYPEMAPPING Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated

schemaTypeName

Name of the schema type


Usage Notes

This procedure reverses the SETSQLTYPEMAPPING Procedure.


REMOVETABLEPROPS Procedure

This procedure removes the table storage properties from the CREATE TABLE statement. This procedure is overloaded. Each overload has different parameter requirements as indicated.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.REMOVETABLEPROPS (
   xmlschema            IN OUT  XMLTYPE,
   globalElementName    IN      VARCHAR2);
DBMS_XMLSCHEMA_ANNOTATE.REMOVETABLEPROPS (
   xmlschema            IN OUT  XMLTYPE, 
   globalObject         IN      VARCHAR2, 
   globalObjectName     IN      VARCHAR2, 
   localElementName     IN      VARCHAR2);

Parameters

Table 196-18 REMOVETABLEPROPS Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated

globalElementName

Name of the global element in the schema

globalObject

Global object (global complex type or global element)

globalObjectName

Name of the global object

localElementName

Name of a local element that descends from the global element


Usage Notes

This procedure reverses the SETTABLEPROPS Procedure.


REMOVETIMESTAMPWITHTIMEZONE Procedure

This procedure removes the setting of the TimeStampWithTimeZone datatype from all dateTime typed elements in the XML schema.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.REMOVETIMESTAMPWITHTIMEZONE (
   xmlschema          IN OUT  XMLTYPE);

DBMS_XMLSCHEMA_ANNOTATE.REMOVETIMESTAMPWITHTIMEZONE (
   xmlschema         IN OUT  XMLTYPE,
   schemaTypeName    IN      VARCHAR2);

Parameters

Table 196-19 REMOVETIMESTAMPWITHTIMEZONE Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated

schemaTypeName

Name of the schema type


Usage Notes

This procedure reverses the SETTIMESTAMPWITHTIMEZONE Procedure.


SETANYSTORAGE Procedure

This procedure assigns a SQL datatype to the ANY child of the complex type with the given name.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.SETANYSTORAGE )
   xmlschema       IN OUT  XMLType,
   complexTypeName IN      VARCHAR2,
   sqlTypeName     IN      VARCHAR2, 
   overwrite       IN      BOOLEAN DEFAULT TRUE);

Parameters

Table 196-20 SETANYSTORAGE Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated

complexTypeName

Name of the complex type

sqlTypeName

Name of the SQL type

overwrite

Boolean that indicates whether or not the procedure overwrites element attributes. The default is TRUE.


Example

The xsd:any child of complex type Items is assigned an annotation similar to xdb:SQLType="VARCHAR".

DECLARE   xml_schema  XMLTYPE;BEGIN   SELECT out INTO xml_schema FROM annotation_tab;   DBMS_XMLSCHEMA_ANNOTATE.setAnyStorage (xml_schema,                                        'Items',                                         'VARCHAR');   UPDATE annotation_tab SET out = xml_schema;END;
/

SETDEFAULTTABLE Procedure

This procedure sets the name of the table for the specified global element. This is equivalent to using the schema annotation xdb:defaultTable="<default_table_name>" for the top-level element.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.SETDEFAULTTABLE (
   xmlschema           IN  OUT  XMLTYPE,
   globalElementName   IN       VARCHAR2, 
   tableName           IN       VARCHAR2, 
   overwrite           IN       BOOLEAN   DEFAULT TRUE);

Parameters

Table 196-21 SETDEFAULTTABLE Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated

globalElementName

Name of the global element in the schema

tableName

Name being assigned to the table

overwrite

Boolean that indicates whether or not the procedure overwrites element attributes. The default is TRUE.



SETOUTOFLINE Procedure

This procedure sets the SQLInline attribute to FALSE, that is, it sets xdb:SQLInLine=FALSE.

This forces XDB to store the corresponding elements in the XML document out-of-line as rows in a separate XMLType table. XDB stores references to each row of the XMLType table in a link table that is maintained by the main table

This procedure can improve performance in some situations if the out-of-line table acts as the driver for the query. Storing elements in an out-of-line table also reduces the numbers of columns in the base table, thus avoiding '1000 column limit' errors during XML schema registration, when some elements have complex types with many elements.

Also See:

Oracle XML DB Developer's Guide

There are three overloads.

Syntax

Sets the SQLInline attribute to FALSE, forcing out-of-line storage for the named element.

DBMS_XMLSCHEMA_ANNOTATE.SETOUTOFLINE (
   xmlschema          IN OUT  XMLType,  
   elementName        IN      VARCHAR2, 
   elementType        IN      VARCHAR2, 
   defaultTableName   IN      VARCHAR2, 
   overwrite          IN      BOOLEAN DEFAULT TRUE);

Sets the SQLInline attribute to FALSE, forcing out-of-line storage for the element specified by its local and global name.

DBMS_XMLSCHEMA_ANNOTATE.SETOUTOFLINE (
   xmlschema          IN OUT  XMLType,
   globalObject       IN      VARCHAR2,
   globalObjectName   IN      VARCHAR2, 
   localElementName   IN      VARCHAR2, 
   defaultTableName   IN      VARCHAR2, 
   overwrite          IN      BOOLEAN DEFAULT TRUE);

Sets the SQLInline attribute to FALSE to force out-of-line storage and sets the default table name for all references to a particular global element.

DBMS_XMLSCHEMA_ANNOTATE.SETOUTOFLINE (
   xmlschema         IN OUT  XMLType, 
   reference         IN      VARCHAR2, 
   defaultTableName  IN      VARCHAR2, 
   overwrite         IN      BOOLEAN DEFAULT TRUE);

Parameters

Table 196-22 SETOUTOFLINE Procedure Parameters

Parameter Description

xmlschema

The XML schema to be annotated.

elementName

The element name

elementType

The element type

defaultTableName

The name of the default table.

globalObject

The global object (global complex type or global element)

globalObjectName

The name of the global object

localElementName

The name of a local element that descends from the global element.

reference

A reference to a global element

overwrite

A boolean that indicates whether or not the procedure overwrites element attributes. The default is TRUE.


Usage Notes

After XML schema registration and before loading XML instance data, use DBMS_XMLSTORAGE_MANAGE.SCOPEXMLREFERENCES() to make these references scope to the out-of-line table only. This ensures better query performance later on.

Example

The following example illustrates the third overloaded method. The element comment will have an annotation similar to xdb:defaultTable="CMMNT_DEFAULT_TABLE"

DECLARE
   xml_schema xmltype;
BEGIN
SELECT OUT INTO xml_schema FROM annotation_tab;
 
DBMS_XMLSCHEMA_ANNOTATE.SETOUTOFLINE (xml_schema,
                                       'ipo:comment', 
                                       'CMMNT_DEFAULT_TABLE');
UPDATE annotation_tab SET OUT = xml_schema;
END;
/

SETSCHEMAANNOTATATIONS Procedure

This procedure takes the annotated differences resulting from a call to DBMS_XMLSCHEMA_ANNOTATE.GETSCHEMAANNOTATIONS and patches them into the provided XML schema.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.SETSCHEMAANNOTATIONS (
   xmlschema     IN OUT xmlType,
   annotations   IN VARCHAR2);

Parameters

Table 196-23 SETSCHEMAANNOTATIONS Procedure Parameters

Parameter Description

xmlschema

An XML schema to be patched.

annotations

The differences document produced by calling DBMS_XMLSCHEMA_ANNOTATE.GETSCHEMAANNOTATIONS on the original XML schema and an annotated XML schema.


Usage Notes

DBMS_XMLSCHEMA_ANNOTATE.SETSCHEMAANNOTATATIONS is not available on Oracle Database release 10.2 (only Oracle Database release 11.x).

Example

The following example illustrates DBMS_XMLSCHEMA_ANNOTATE.SETSCHEMAANNOTATIONS shown here and GETSCHEMAANNOTATIONS Function.

-- test getannotations and apply them
declare
 xml_schema xmltype;
 xml_schema2 xmltype;
 annotations xmltype;
begin
   select out into xml_schema from annotation_tab;
 
   -- get the annotations from the schema
   annotations := DBMS_XMLSCHEMA_ANNOTATE.getSchemaAnnotations (xml_schema);
 
   -- apply the annotations to the schema
   select inp into xml_schema2 from annotation_tab;
 
   DBMS_XMLSCHEMA_ANNOTATE.setSchemaAnnotations(xml_schema2, annotations);
 
   update annotation_tab t set t.out = xml_schema2;
end;
/

SETSQLCOLLTYPE Procedure

This procedure assigns a SQL type name for a collection. A collection is a global or local element with maxOccurs>1. Using this procedure, XDB creates SQLTypes with the user-defined names provided.

There are two overloads. The first sets the name of the SQL collection type corresponding to an XML element and the second to an XML element inside the specified complex type.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.SETSQLCOLLTYPE (
   xmlschema          IN OUT   XMLTYPE, 
   elementName        IN       VARCHAR2, 
   sqlCollType        IN       VARCHAR2, 
   overwrite          IN       BOOLEAN DEFAULT TRUE);
DBMS_XMLSCHEMA_ANNOTATE.SETSQLCOLLTYPE (
   xmlschema          IN OUT XMLType,
   globalObject       IN VARCHAR2, 
   globalObjectName   IN VARCHAR2, 
   localElementName   IN VARCHAR2, 
   sqlCollType        IN VARCHAR2, 
   overwrite          IN BOOLEAN default TRUE );

Parameters

Table 196-24 SETSQLCOLLTYPE Procedure Parameters

Parameter Description

xmlschema

The XML schema to be annotated

elementName

The element name

sqlCollType

The SQL collection type

globalObject

The global object (global complex type or global element)

globalObjectName

The name of the global object

localElementName

The name of a local element that descends from the global element

overwrite

A boolean that indicates whether or not the procedure overwrites element attributes. The default is TRUE.


Example

The item element will have an annotation similar to xdb:SQLCollType="ITEM_SQL_COL_TYPE".

declare
   xml_schema xmltype;
begin
   SELECT out INTO xml_schema FROM annotation_tab;
   DBMS_XMLSCHEMA_ANNOTATE.setSQLCollType (xml_schema,
                                        'item', 
                                        'ITEM_SQL_COL_TYPE',TRUE);
   UPDATE annotation_tab SET out = xml_schema;
end;

SETSQLNAME Procedure

This procedure assigns a name to the SQL attribute that corresponds to an element defined in the XML schema.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.SETSQLNAME (
   xmlschema          IN OUT  XMLType,
   globalObject       IN      VARCHAR2, 
   globalObjectName   IN      VARCHAR2,
   localObject        IN      VARCHAR2, 
   localObjectName    IN      VARCHAR2, 
   sqlName            IN      VARCHAR2, 
   overwrite          IN      BOOLEAN DEFAULT TRUE);

Parameters

Table 196-25 SETSQLNAME Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated

globalObject

Global object (global complex type or global element)

globalObjectName

Name of the global object

localObject

Object descended from the global object

localObjectName

Name of the local object

sqlName

Name of the SQL attribute that corresponds to the element defined in the XML schema

overwrite

Boolean that indicates whether or not the procedure overwrites element attributes. The default is TRUE.


Example

The shipTo element will have an annotation similar to xdb:SQLName="SHIPTO_SQLNAME".

DECLARE
   xml_schema   XMLTYPE;
BEGIN
   SELECT out INTO xml_schema FROM annotation_tab;
   DBMS_XMLSCHEMA_ANNOTATE.SETSQLNAME (xml_schema, 
                                        'element', 'purchaseOrder', 
                                        'element', 'shipTo',
                                        'SHIPTO_SQLNAME');   
   UPDATE annotation_tab SET out = xml_schema;
END;
/

SETSQLTYPE Procedure

This procedure assigns a SQL type to a global object.

There are two overloads. The first overload assigns a SQL Type to a global object, such as a global element or global complex type and the second to a local object.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.SETSQLTYPE (
   xmlschema            IN OUT   XMLTYPE,
   globalElementName    IN       VARCHAR2, 
   sqlType              IN       VARCHAR2, 
   overwrite            IN       BOOLEAN DEFAULT TRUE);
DBMS_XMLSCHEMA_ANNOTATE.SETSQLTYPE (
   xmlschema           IN OUT   XMLTYPE,
   globalObject        IN       VARCHAR2, 
   globalObjectName    IN       VARCHAR2, 
   localObject         IN       VARCHAR2, 
   localObjectName     IN       VARCHAR2,
   sqlType             IN       VARCHAR2, 
   overwrite           IN       BOOLEAN DEFAULT TRUE);

Parameters

Table 196-26 SETSQLTYPE Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated

globalObject

Global object (global complex type or global element)

globalObjectName

Name of the global object

globalElementName

Name of the global element

localObject

Object descended from the global object

localObjectName

Name of the local object

sqlType

SQL type assigned to the named global element

overwrite

Boolean that indicates whether or not the procedure overwrites element attributes. The default is TRUE.


Example

The purchaseOrder element will have an annotation similar to xdb:SQLType="PO_SQLTYPE" and the shipTo element has one similar to xdb:SQLType="VARCHAR".

DECLARE
   xml_schema  xmltype;
BEGIN
  SELECT out INTO xml_schema FROM annotation_tab;
  DBMS_XMLSCHEMA_ANNOTATE.setSQLType (xml_schema, 
                                        'purchaseOrder', 
                                        'PO_SQLTYPE');
  UPDATE annotation_tab SET out = xml_schema;
END;
/
 
DECLARE   xml_schema   xmltype;BEGIN  SELECT out INTO xml_schema FROM annotation_tab;  DBMS_XMLSCHEMA_ANNOTATE.setSQLType (xml_schema,                                         'element','purchaseOrder',                                         'element' ,'shipTo',                                        'VARCHAR');  UPDATE annotation_tab SET out = xml_schema;END;
/

SETSQLTYPEMAPPING Procedure

This procedure defines a mapping of schema type and SQL type.

If you use this procedure, you do not need to call the SETSQLTYPE procedure on all instances of the schema type; instead the procedure traverses the schema and assigns the SQL type automatically.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.SETSQLTYPEMAPPING (
   xmlschema         IN OUT   XMLType, 
   schemaTypeName    IN       VARCHAR2, 
   sqlTypeName       IN       VARCHAR2, 
   overwrite         IN       BOOLEAN DEFAULT TRUE);

Parameters

Table 196-27 SETSQLTYPEMAPPING Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated

schemaTypeName

Schema type

sqlTypeName

Name of the SQL type

overwrite

Boolean that indicates whether or not the procedure overwrites element attributes. The default is TRUE


Example

The attribute orderDate will have an annotation similar to xdb:SQLType="DATE".

declare   xml_schema xmltype;beginSELECT out INTO xml_schema FROM annotation_tab;DBMS_XMLSCHEMA_ANNOTATE.setSQLTypeMapping (xml_schema,                                         'date',                                         'DATE');UPDATE annotation_tab SET out = xml_schema;end;
/

SETTABLEPROPS Procedure

This procedure specifies properties in the TABLE storage clause that is appended to the default CREATE TABLE statement. There are two overloads with different parameter requirements, as indicated:

Syntax

DBMS_XMLSCHEMA_ANNOTATE.SETTABLEPROPS (
   xmlschema            IN OUT  XMLType, 
   globalElementName    IN      VARCHAR2, 
   tableProps           IN      VARCHAR2,    
   overwrite            IN      BOOLEAN DEFAULT TRUE);
DBMS_XMLSCHEMA_ANNOTATE.SETTABLEPROPS (
   xmlschema            IN OUT  XMLTYPE,
   globalObject         IN      VARCHAR2, 
   globalObjectName     IN      VARCHAR2, 
   localElementName     IN      VARCHAR2, 
   tableProps           IN      VARCHAR2, 
   overwrite            IN      BOOLEAN DEFAULT TRUE);

Parameters

Table 196-28 SETTABLEPROPS Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated

globalElementName

Name of the global element in the schema

tableProps

Table properties

globalObject

Global object (global complex type or global element)

globalObjectName

Name of the global object

localElementName

Name of a local element that descends from the global element

overwrite

Boolean that indicates whether or not the procedure overwrites element attributes. The default is TRUE.


Example

The purchaseOrder element will have an annotation similar to xdb:tableProps="CACHE".

DECLARE   xml_schema XMLTYPE;BEGIN   SELECT out INTO xml_schema FROM annotation_tab;   DBMS_XMLSCHEMA_ANNOTATE.SETTABLEPROPS(xml_schema,                                         'purchaseOrder' ,'CACHE');   UPDATE annotation_tab SET out = xml_schema;END;
/

SETTIMESTAMPWITHTIMEZONE Procedure

This procedure sets the TIMESTAMPWITHTIMEZONE datatype to all dateTime typed elements in the XML schema. This is equivalent to adding xdb:SQLType="TIMESTAMP WITH TIME ZONE" to all dateTime objects.

Syntax

DBMS_XMLSCHEMA_ANNOTATE.SETTIMESTAMPWITHTIMEZONE (
   xmlschema      IN OUT   XMLTYPE, 
   overwrite      IN       BOOLEAN DEFAULT TRUE);

Parameters

Table 196-29 SETTIMESTAMPWITHTIMEZONE Procedure Parameters

Parameter Description

xmlschema

XML schema to be annotated

overwrite

Boolean that indicates whether or not the procedure overwrites element attributes. The default is TRUE.