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XMLType → This Oracle-supplied type can be used to store and query XML data in the database. XMLType has … is another standard developed by the W3C committee to traverse XML documents. Oracle XMLType … packages to create XMLType values from existing relational or object-relational data. XMLType is a system … column. You
XMLTYPE → XMLType constructor. The options are described in the following table. Syntax Description … constructor function XMLType( xmlData IN clob, schema IN varchar2:= NULL, validated IN number:= 0 … creates an optionally schema-based XMLType instance using the specified schema and xml data parameters … . constructor function
EXISTSNODE → Member function. Checks if the node exists. If the XPath string is NULL or the document is empty, then a value of 0 is returned, otherwise returns 1. The options are described in the following table. Syntax Description MEMBER FUNCTION existsNode( xpath IN varchar2) RETURN number deterministic; Given an XPath expression, checks if the XPath applied over the document can return any valid nodes. MEMBER
TOOBJECT → XMLType, object OUT \"\", schema in varchar2:= NULL, element in varchar2:= NULL); Parameter IN / OUT … (IN) Schema URL. The mapping of the XMLType instance to the converted object instance may be specified
TRANSFORM → the parammap is NULL, then a NULL is returned. Syntax MEMBER FUNCTION transform( xsl IN XMLType … , parammap in varchar2:= NULL) RETURN XMLType deterministic; Parameter IN / OUT Description xsl (IN
260 XMLTYPE → XMLType is a system-defined opaque type for handling XML data. It as predefined member functions on … it to extract XML nodes and fragments. You can create columns of XMLType and insert XML documents … into it. You can also generate XML documents as XMLType instances dynamically using the SYS_XMLGEN … and SYS_XMLAGG SQL functions.
GETSCHEMAURL → Member function. Returns the XML Schema URL corresponding to the XMLType instance, if the XMLType
ISSCHEMAVALIDATED → Member function. Returns the validation status of the XMLType instance -- tells if a schema based
EXTRACT → Member function. Extracts an XMLType fragment and returns an XMLType instance containing the result … XMLType deterministic; Given an XPath expression, applies the XPath to the document and returns the … fragment as an XMLType. MEMBER FUNCTION extract( xpath IN varchar2, nsmap IN varchar2) RETURN … XMLType
GETROOTELEMENT → Member function. Gets the root element of the XMLType instance. Returns NULL if the instance is a
CREATESCHEMABASEDXML → Member function. Creates a schema based XMLType instance from a non-schema based XMLType value. It … FUNCTION createSchemaBasedXML( schema IN varchar2:= NULL) return XMLType deterministic; Parameter
GETBLOBVAL → Member function. Returns a BLOB containing the serialized XML representation; if the BLOB returned is temporary, it must be freed after use. Syntax MEMBER FUNCTION getBlobVal( csid IN NUMBER) RETURN Blob deterministic; Parameter Description csid The character set id of input XML data
GETSTRINGVAL → Member function. Returns the document as a string. Returns s string containing the seralized XML representation, or in case of text nodes, the text itself. If the XML document is bigger than the maximum size of the VARCHAR2, which is 4000, then an error is raised at run time. Syntax MEMBER FUNCTION getStringVal() RETURN varchar2 deterministic;
ISSCHEMAVALID → is schema based, the conformance is checked against the XMLType instance's own schema. Syntax
GETNUMBERVAL → Member function. Returns a numeric value, formatted from the text value pointed to by the XMLType … instance. The XMLType must point to a valid text node that contains a numerical value. The options
SETSCHEMAVALIDATED → setSchemaValidated( self IF OUT NOCOPY XMLType, flag IN BINARY_INTEGER:= 1); Parameter IN / OUT
Summary of XMLType Subprograms → Table 260-1 summarizes functions and procedures of the XMLType. Table 260-1 XMLTYPE Subprograms … instance. CREATESCHEMABASEDXML Creates a schema based XMLType instance from the non-schema based … instance using the input schema URL. CREATEXML Static function for creating and returning an XMLType … instance. EXISTSNODE
GETNAMESPACE → Member function. Returns the namespace of the top level element in the instance. Returns NULL if the input is a fragment or is a non-schema based instance. Syntax MEMBER FUNCTION getNamespace return varchar2 deterministic;
ISSCHEMABASED → Member function. Determines whether the XMLType instance is schema-based or not. Returns 1 or 0 … depending on whether the XMLType instance is schema-based. Syntax MEMBER FUNCTION isSchemaBased return number deterministic;