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Preface

Virtuoso Functions Guide

Administration
Aggregate Functions
Array Manipulation
BPEL APIs
Backup
Compression
Cursor
Date & Time Manipulation
Debug
Dictionary Manipulation
Encoding & Decoding
File Manipulation
Free Text
Hashing / Cryptographic
LDAP
Locale
Mail
Miscellaneous
Number
Phrases
RDF data
Remote SQL Data Source
Replication
SOAP
SQL
String
Transaction
Type Mapping
UDDI
User Defined Types & The CLR
VAD
Virtuoso Java PL API
Virtuoso Server Extension Interface (VSEI)
Web & Internet
XML
xmlagg
xmlattributes
xmladdattribute
xmlappendchildren
xmlconcat
xmlelement
xmlforest
xmlinsertafter
xmlinsertbefore
xmlreplace
xmltype.xmltype
xmltype.createnonsch...
xmltype.createschema...
xmltype.createxml
xmltype.existsnode
xmltype.extract
xmltype.getclobval
xmltype.getnamespace
xmltype.getnumval
xmltype.getrooteleme...
xmltype.getschemaurl
xmltype.getstringval
xmltype.isfragment
xmltype.isschemabase...
xmltype.isschemavali...
xmltype.isschemavali...
xmltype.schemavalida...
xmltype.setschemaval...
xmltype.toobject
xmltype.transform
xmlupdate
xper navigation
createxml
isentity
serialize_to_utf8_xm...
tidy_html
tidy_list_errors
updatexml
xml_add_system_path
xml_auto
xml_auto_dtd
xml_auto_schema
xml_create_tables_fr...
xml_cut
xml_doc_output_optio...
xml_get_system_paths
xml_load_mapping_sch...
xml_load_schema_decl
xml_namespace_scope
xml_persistent
xml_set_ns_decl
xml_template
xml_tree
xml_tree_doc
xml_tree_doc_media_t...
xml_uri_get
xml_validate_dtd
xml_validate_schema
xml_view_dtd
xml_view_schema
xmlsql_update
xpath_eval
xper_cut
xper_doc
xper_locate_words
xpf_extension
xpf_extension_remove
xquery_eval
xslt
xslt_format_number
xslt_sheet
xslt_stale
xte_head
xte_node
xte_node_from_nodebl...
xte_nodebld_acc
xte_nodebld_final
xte_nodebld_init
xtree_doc
XPATH & XQUERY

Functions Index

xtree_doc

returns an entity object created from an XML document
xtree_doc (in document varchar, [in parser_mode integer], [in base_uri varchar], [in content_encoding varchar], [in content_language varchar], [in dtd_validator_config varchar]);
Description

This parses the argument, which is expected to be a well formed XML fragment and returns a parse tree as a special memory-resident object. While xper_doc creates some disk-resident data structure, xtree_doc() will work faster but it may require more memory. You may wish to use xtree_doc for small documents (e.g. less than 5 megabytes and xper_doc for larger documents.

Parameters
document – well formed XML or HTML document
parser_mode – 0, 1 or 2; 0 - XML parser mode, 1 - HTML parser mode, 2 - 'dirty HTML' mode (with quiet recovery after any syntax error)
base_uri – in HTML parser mode change all absolute references to relative from given base_uri (http://<host>:<port>/<path>)
content_encoding – string with content encoding type of <document>; valid are 'ASCII', 'ISO', 'UTF8', 'ISO8859-1', 'LATIN-1' etc., defaults are 'UTF-8' for XML mode and 'LATIN-1' for HTML mode.
content_language – string with language tag of content of <document>; valid names are listed in IETF RFC 1766, default is 'x-any' (it means 'mix of words from various human languages')
dtd_validator_config – configuration string for DTD validator, default is empty string meaning that DTD validator should be fully disabled. See Configuration Options of the DTD Validator for details.
Return Types

XML entity with underlying parse tree of source document; the tree will be a memory-resident structure of nested heterogeneous vectors.

Examples
xtree_doc
declare tree any;

tree := xtree_doc (file_to_string ('doc.html'), 1, 
		'http://localhost.localdomain/', 'ISO');
...
tree := xtree_doc (file_to_string ('doc.xml'));
See Also

xml_tree

xml_tree_doc

xper_doc