175 DBMS_XMLSAVE

DBMS_XMLSAVE provides XML to database-type functionality.

Using DBMS_XMLSAVE

Security Model
Constants
Types

Security Model

Owned by XDB, the DBMS_XMLSAVE 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.

ARPLS70000

Constants

ARPLS70001 Table 175-1 Constants of DBMS_XMLSAVE

Constant	Description
`DEFAULT_ROWTAG`	The default tag name for the element corresponding to database records -- ROW
`DEFAULT_DATE_FORMAT`	Default date mask:'MM/dd/yyyy HH:mm:ss'
`MATCH_CASE`	Used to specify that when mapping XML elements to database entities; the XSU should be case sensitive.
`IGNORE_CASE`	Used to specify that when mapping XML elements to database. entities the XSU should be case insensitive.

ARPLS70002

Types

ARPLS70003 Table 175-2 Types of DBMS_XMLSAVE

Type	Description
`ctxType`	The type of the query context handle. The type of the query context handle. This the return type of NEWCONTEXT.

ARPLS70004

Summary of DBMS_XMLSAVE Subprograms

ARPLS70005 Table 175-3 DBMS_XMLSAVE Package Subprograms

Method	Description
CLEARKEYCOLUMNLIST	Clears the key column list.
CLEARUPDATECOLUMNLIST	Clears the update column list.
CLOSECONTEXT	It closes/deallocates a particular save context.
DELETEXML	Deletes records specified by data from the XML document, from the table specified at the context creation time.
GETEXCEPTIONCONTENT	Returns the thrown exception's error code and error message.
INSERTXML	Inserts the XML document into the table specified at the context creation time.
NEWCONTEXT	Creates a save context, and returns the context handle.
PROPAGATEORIGINALEXCEPTION	Tells the XSU that if an exception is raised, and is being thrown, the XSU should throw the very exception raised; rather then, wrapping it with an `OracleXMLSQLException`.
REMOVEXSLTPARAM	Removes the value of a top-level stylesheet parameter
SETBATCHSIZE	Changes the batch size used during DML operations.
SETCOMMITBATCH	Sets the commit batch size.
SETDATEFORMAT	Sets the format of the generated dates in the XML document.
SETIGNORECASE	The XSU does mapping of XML elements to database.
SETKEYCOLUMN	This methods adds a column to the key column list.
SETPRESERVEWHITESPACE	Tells the XSU whether to preserve whitespace or not.
SETROWTAG	Names the tag used in the XML document to enclose the XML elements corresponding to database.
SETSQLTOXMLNAMEESCAPING	This turns on or off escaping of XML tags in the case that the SQL object name, which is mapped to a XML identifier, is not a valid XML identifier.
SETUPDATECOLUMN	Adds a column to the update column list.
SETXSLT	Registers a XSL transform to be applied to the XML to be saved.
SETXSLTPARAM	Sets the value of a top-level stylesheet parameter.
UPDATEXML	Updates the table given the XML document.

ARPLS70006

CLEARKEYCOLUMNLIST

Clears the key column list.

ARPLS70007Syntax

PROCEDURE clearKeyColumnList(
   ctxHdl IN ctxType);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.

ARPLS70008

CLEARUPDATECOLUMNLIST

Clears the update column list.

ARPLS70009Syntax

PROCEDURE clearUpdateColumnList(
   ctxHdl IN ctxType);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.

ARPLS70010

CLOSECONTEXT

Closes/deallocates a particular save context.

ARPLS70011Syntax

PROCEDURE closeContext(
   ctxHdl IN ctxType);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.

ARPLS70012

DELETEXML

Deletes records specified by data from the XML document from the table specified at the context creation time, and returns the number of rows deleted. The options are described in the following table.

Syntax Description

Syntax	Description
`FUNCTION deleteXML(` `ctxHdl IN ctxPType,` `xDoc IN VARCHAR2)` `RETURN NUMBER;`	Uses a `VARCHAR2` type for the `xDoc` parameter.
`FUNCTION deleteXML(` `ctxHdl IN ctxType,` `xDoc IN CLOB)` `RETURN NUMBER;`	Uses a `CLOB` type for the `xDoc` parameter.

FUNCTION deleteXML(

ctxHdl IN ctxPType,

xDoc IN VARCHAR2)

RETURN NUMBER;

Uses a VARCHAR2 type for the xDoc parameter.

FUNCTION deleteXML(

ctxHdl IN ctxType,

xDoc IN CLOB)

RETURN NUMBER;

Uses a CLOB type for the xDoc parameter.

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`xDoc`	`(IN)`	String containing the XML document.

ARPLS70013

GETEXCEPTIONCONTENT

Through its arguments, this method returns the thrown exception's error code and error message, SQL error code. This is to get around the fact that the JVM throws an exception on top of whatever exception was raised; thus, rendering PL/SQL unable to access the original exception.

ARPLS70014Syntax

PROCEDURE getExceptionContent(
   ctxHdl IN ctxType,
   errNo OUT NUMBER,
   errMsg OUT VARCHAR2);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`errNo`	`(IN)`	Error number.
`errMsg`	`(IN)`	Error message.

ARPLS70015

INSERTXML

Inserts the XML document into the table specified at the context creation time, and returns the number of rows inserted. The options are described in the following table.

Syntax Description

Syntax	Description
`FUNCTION insertXML(` `ctxHdl IN ctxType,` `xDoc IN VARCHAR2)` `RETURN NUMBER;`	Passes in the `xDoc` parameter as a `VARCHAR2`.
`FUNCTION insertXML(` `ctxHdl IN ctxType,` `xDoc IN CLOB)` `RETURN NUMBER;`	Passes in the `xDoc` parameter as a `CLOB`.

FUNCTION insertXML(

ctxHdl IN ctxType,

xDoc IN VARCHAR2)

RETURN NUMBER;

Passes in the xDoc parameter as a VARCHAR2.

FUNCTION insertXML(

ctxHdl IN ctxType,

xDoc IN CLOB)

RETURN NUMBER;

Passes in the xDoc parameter as a CLOB.

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`xDoc`	`(IN)`	String containing the XML document.

ARPLS70016

NEWCONTEXT

Creates a save context, and returns the context handle.

ARPLS70017Syntax

FUNCTION newContext(
   targetTable IN VARCHAR2)
RETURN ctxType;

Parameter	IN / OUT	Description
`targetTable`	`(IN)`	The target table into which to load the XML document.

ARPLS70018

PROPAGATEORIGINALEXCEPTION

Tells the XSU that if an exception is raised, and is being thrown, the XSU should throw the very exception raised; rather then, wrapping it with an OracleXMLSQLException.

ARPLS70019Syntax

PROCEDURE propagateOriginalException(
   ctxHdl IN ctxType,
   flag IN BOOLEAN);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`flag`	`(IN)`	Propagate the original exception? 0=`FALSE`, 1=`TRUE`.

ARPLS70020

REMOVEXSLTPARAM

Removes the value of a top-level stylesheet parameter.

ARPLS70021Syntax

PROCEDURE removeXSLTParam(
   ctxHdl IN ctxType, 
   name IN VARCHAR2);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`name`	`(IN)`	Parameter name.

ARPLS70022

SETBATCHSIZE

Changes the batch size used during DML operations. When performing inserts, updates or deletes, it is better to batch the operations so that they get executed in one shot rather than as separate statements. The flip side is that more memory is needed to buffer all the bind values. Note that when batching is used, a commit occurs only after a batch is executed. So if one of the statement inside a batch fails, the whole batch is rolled back. This is a small price to pay considering the performance gain; nevertheless, if this behavior is unacceptable, then set the batch size to 1.

ARPLS70023Syntax

PROCEDURE setBatchSize(
   ctxHdl IN ctxType,
   batchSize IN NUMBER);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`batchSize`	`(IN)`	Batch size.

ARPLS70024

SETCOMMITBATCH

Sets the commit batch size. The commit batch size refers to the number or records inserted after which a commit should follow. If batchSize is less than 1 or the session is in "auto-commit" mode, using the XSU does not make any explicit commits. By default, commitBatch is 0.

ARPLS70025Syntax

PROCEDURE setCommitBatch(
   ctxHdl IN ctxType,
   batchSize IN NUMBER);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`batchSize`	`(IN)`	Commit batch size.

ARPLS70026

SETDATEFORMAT

Sets the format of the generated dates in the XML document. The syntax of the date format patern, the date mask, should conform to the requirements of the class java.text.SimpleDateFormat. Setting the mask to <code>null</code> or an empty string unsets the date mask.

ARPLS70027Syntax

PROCEDURE setDateFormat(
   ctxHdl IN ctxType,
   mask IN VARCHAR2);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`mask`	`(IN)`	Syntax of the date format pattern..

ARPLS70028

SETIGNORECASE

The XSU does mapping of XML elements to db columns/attributes based on the element names (XML tags). This function tells the XSU to do this match case insensitive.

ARPLS70029Syntax

PROCEDURE setIgnoreCase(
   ctxHdl IN ctxType,
   flag IN NUMBER);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`flag`	`(IN)`	Ignore tag case in the XML doc? 0=`FALSE`, 1=`TRUE`.

ARPLS70030

SETKEYCOLUMN

This method adds a column to the "key column list". The value for the column cannot be NULL. In case of update or delete, the columns in the key column list make up the WHERE clause of the statement. The key columns list must be specified before updates can complete; this is optional for delete operations.

ARPLS70031Syntax

PROCEDURE setKeyColumn( 
   ctxHdl IN ctxType,
   colName IN VARCHAR2);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`colName`	`(IN)`	Column to be added to the key column list; cannot be `NULL`.

ARPLS70032

SETPRESERVEWHITESPACE

Tells the XSU whether or not to preserve whitespace.

ARPLS70033Syntax

PROCEDURE setPreserveWhitespace(
   ctxHdl IN ctxType,
   flag IN BOOLEAN := true);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`flag`	`(IN)`	Should XSU preserve whitespace?

ARPLS70034

SETROWTAG

Names the tag used in the XML document to enclose the XML elements corresponding to db. records.

ARPLS70035Syntax

PROCEDURE setRowTag(
   ctxHdl IN ctxType,
   tag IN VARCHAR2);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`tag`	`(IN)`	Tag name.

ARPLS70036

SETSQLTOXMLNAMEESCAPING

Turns on or off escaping of XML tags in the case that the SQL object name, which is mapped to a XML identifier, is not a valid XML identifier.

ARPLS70037Syntax

PROCEDURE setSQLToXMLNameEscaping(
   ctxHdl IN ctxType,
   flag IN BOOLEAN := true);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`flag`	`(IN)`	Turn on escaping?

ARPLS70038

SETUPDATECOLUMN

Adds a column to the update column list. In case of insert, the default is to insert values to all the columns in the table; on the other hand, in case of updates, the default is to only update the columns corresponding to the tags present in the ROW element of the XML document. When the update column list is specified, the columns making up this list alone will get updated or inserted into.

ARPLS70039Syntax

PROCEDURE setUpdateColumn( 
   ctxHdl IN ctxType,
   colName IN VARCHAR2);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`colName`	`(IN)`	Column to be added to the update column list.

ARPLS70040

SETXSLT

Registers an XSL transform to be applied to the XML to be saved. If a stylesheet was already registered, it gets replaced by the new one. To un-register the stylesheet, pass in null for the URI. The options are described in the following table.

Syntax Description

Syntax	Description
`PROCEDURE setXSLT(` `ctxHdl IN ctxType,` `uri IN VARCHAR2,` `ref IN VARCHAR2 := null);`	Passes in the stylesheet through a URI.
`PROCEDURE setXSLT(` `ctxHdl IN ctxType,` `stylesheet IN CLOB,` `ref IN VARCHAR2 := null);`	Passes in the stylesheet through a `CLOB`.

PROCEDURE setXSLT(

ctxHdl IN ctxType,

uri IN VARCHAR2,

ref IN VARCHAR2 := null);

Passes in the stylesheet through a URI.

PROCEDURE setXSLT(

ctxHdl IN ctxType,

stylesheet IN CLOB,

ref IN VARCHAR2 := null);

Passes in the stylesheet through a CLOB.

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`uri`	`(IN)`	URI to the stylesheet to register.
`ref`	`(IN)`	URL for include, import, and external entities.
`stylesheet`	`(IN)`	`CLOB` containing the stylesheet to register.

ARPLS70041

SETXSLTPARAM

Sets the value of a top-level stylesheet parameter. The parameter is expected to be a valid XPath expression; literal values would therefore have to be explicitly quoted.

ARPLS70042Syntax

PROCEDURE setXSLTParam(
   ctxHdl IN ctxType,
   name IN VARCHAR2,
   value IN VARCHAR2);

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`name`	`(IN)`	Parameter name.
`value`	`(IN)`	Parameter value as an XPath expression

ARPLS70043

UPDATEXML

Updates the table specified at the context creation time with data from the XML document, and returns the number of rows updated. The options are described in the following table.

Syntax Description

Syntax	Description
`FUNCTION updateXML(` `ctxHdl IN ctxType,` `xDoc IN VARCHAR2)` `RETURN NUMBER;`	Passes in the `xDoc` parameter as a `VARCHAR2`.
`FUNCTION updateXML(` `ctxHdl IN ctxType,` `xDoc IN CLOB)` `RETURN NUMBER;`	Passes in the `xDoc` parameter as a `CLOB`.

FUNCTION updateXML(

ctxHdl IN ctxType,

xDoc IN VARCHAR2)

RETURN NUMBER;

Passes in the xDoc parameter as a VARCHAR2.

FUNCTION updateXML(

ctxHdl IN ctxType,

xDoc IN CLOB)

RETURN NUMBER;

Passes in the xDoc parameter as a CLOB.

Parameter	IN / OUT	Description
`ctxHdl`	`(IN)`	Context handle.
`xDoc`	`(IN)`	String containing the XML document.