cts:query matching elements by name
with the content constrained by the given cts:query in the
second parameter.
Searches for matches in the specified element and all of its descendants.
If the specified query in the second parameter has any
cts:element-attribute-*-query constructors, it will search
attributes directly on the specified element and attributes on any
descendant elements (see the
second example below).
cts:word-query of the
specified string.
Enabling both the word position and element position indexes
("word position" and "element word position" in the database configuration
screen of the Admin Interface) will speed up query performance for many
queries that use cts:element-query. The position indexes
enable MarkLogic Server to eliminate many false-positive results, which can
reduce disk I/O and processing, thereby speeding the performance of many
queries. The amount of benefit will vary depending on your data.
You can query for the existence of an element by specifying an empty
cts.andQuery as
the second parameter. For example, the following will match any instance
of the specified element:
cts.elementQuery(xs.QName("my-element"),
cts.andQuery( [] ))
cts.search(cts.elementQuery(
xs.QName("function"),
"MarkLogic Corporation"))
=> .. relevance-ordered sequence of 'module' elements
ancestors (or self) of elements with QName 'function'
and text content containing the phrase 'MarkLogic
Corporation'.
var x = xdmp.unquote('<a attr="something">hello</a>');
cts.contains(x, cts.elementQuery(xs.QName("a"),
cts.andQuery((
cts.elementAttributeWordQuery(xs.QName("a"),
xs.QName("attr"), "something"),
cts.wordQuery("hello")))));
// returns true