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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
RDF data
Remote SQL Data Source
Replication
SOAP
SQL
String
Transaction
Type Mapping
UDDI
User Defined Types & The CLR
Virtuoso Java PL API
Virtuoso Server Extension Interface (VSEI)
Web Server & 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

XMLType.isFragment

The function returns 1 if the instance is an XML generic entity or 0 if it is a plain document.
XMLType.isFragment
Description

The function checks the number of children elements of the root of the document root of the given instance. If there are no such documents or there are many of them then the document is not well-formed, for example it can not be fully validated against an XML schema. However it can be used as a fragment of a larger document: it can be declared as an external generic entity and then referenced in a top-level document or in one of its subdocuments. For example a book can be stored in XML as a root document that includes subdocuments, one or more chapter per subdocument.

The function returns 1 if the given XMLType instance is a fragment and returns 0 if it is a well-formed XML document.

Return Types

Integer value 1 or 0.

Examples
Basic test

The table DB.DBA.SYS_USERS always contains more than one user record so the call of XMLAGG that returns one element per record creates an valid generic entity but not a valid document.

select XMLAGG (XMLELEMENT ("User",U_NAME)) from DB.DBA.SYS_USERS;
callret
VARCHAR
_______________________________________________________________________________

<User>BACKUP</User><User>SOAP</User><User>dba</User><User>demo</User>

1 Rows. -- 00000 msec.
select XMLType (XMLAGG (XMLELEMENT ("User",U_NAME))).isFragment() from DB.DBA.SYS_USERS;
callret
INTEGER
_______________________________________________________________________________

1

1 Rows. -- 00000 msec.

See Also

XMLType.getRootElement()