#include <DbXml.hpp> XmlIndexLookup XmlManager::createIndexLookup( XmlContainer &container, const std::string &uri, const std::string &name, const std::string &index, const XmlValue &value = XmlValue(), XmlIndexLookup::Operation op = XmlIndexLookup::EQ)
Instantiates an new XmlIndexLookup object for performing index lookup operations. Only a single index may be specified, and substring indices are not supported.
The namespace of the node to be used. The default namespace is selected by passing an empty string for the namespace.
A comma-separated list of strings that represent the indexing strategy. The strings must contain the following information in the following order:
unique
-{path type}-{node type}-{key type}-{syntax}
where:
unique indicates that the indexed value is unique in the container. If this keyword does not appear on the index string, then the indexed value is not required to be unique in the container.
{path type} is either node
or edge
.
{node type} is one of element
,
attribute
, or
metadata
. If
metadata
is specified, then
{path type} must be node
.
{key type} is one of presence
, equality
, or
substring
.
{syntax} identifies the type of information being indexed. It must be one of the following values:
none | double | gYear |
base64Binary | duration | gYearMonth |
boolean | float | hexBinary |
date | gDay | string |
dateTime | gMonth | time |
decimal | gMonthDay |
Note that if {key type} is presence
, then {syntax} must be
none
or simply not specified.
Some example index strings are:
unique-node-element-presence node-element-equality-string edge-element-presence-none node-element-equality-float
The value to be used as the single value for an equality or inequality lookup, or as the lower bound of a range lookup. An empty value is specified using an uninitialized XmlValue object.