- String values must be wrapped in quotation marks (U+0022) or apostrophes (U+0027).
- String comparisons are case sensitive.
-Supported Functions
-===================
+Supported Queries
+=================
Get List Elements by Any Attribute Value
----------------------------------------
-**Syntax**: ``<xpath>/<target-node>/[@<leaf-name>=<leaf-value>]``
+**Syntax**: ``<xpath>/<target-node>[@<leaf-name>=<leaf-value>]``
- ``xpath``: The xpath to the parent of the target node including all ancestors.
- ``target-node``: The name of the (list) node which elements will queried.
- ``leaf-name``: The name of the leaf which value needs to be compared.
- Only string and integer values are supported (boolean and float values are not supported).
**Notes**
- - For performance reasons it does not make sense to query the list key leaf. If the key value is known it is beter to execute a get request with the complete xpath.
+ - For performance reasons it does not make sense to query using key leaf as attribute. If the key value is known it is better to execute a get request with the complete xpath.
Get Any Descendant
------------------
**Limitations**
- List elements can only be addressed using the list key leaf.
+
+Get Any Descendant by Any Attribute Value
+-----------------------------------------
+
+**Syntax**: ``//<direct-ancestors><target-node>[@<leaf-name>=<leaf-value>]``
+ - ``direct-ancestors``: Optional path to direct ancestors of the target node. This can contain zero to many ancestor nodes separated by a /.
+ - ``target-node``: The name of the (list) node which elements will queried.
+ - ``leaf1-name .. leafN-name:``: One or more leaves whose value needs to be compared.
+ - ``leaf1-value .. leafN-value:``: One or more required leaf values (multiple condition can be combined using the 'and' keyword).
+
+**Examples**
+ - ``//categories[@name='Kids']``
+ - ``//categories[@name='Kids' and @numberOfBooks=1]``
+
+**Limitations**
+ - Only string and integer values are supported (boolean and float values are not supported).
+ - Multiple attributes can only be combined using 'and'. 'or' and bracketing is not supported.
+
+Query Extensions
+================
+
+Ancestor Axis
+-------------
+
+The ancestor axis can be added to any CPS path query.
+
+**Syntax**: ``//<cps-path>/ancestor::<ancestor-path>``
+ - ``cps-path``: Any CPS path query.
+ - ``ancestor-path``: Partial path to ancestors of the target node. This can contain one or more ancestor nodes separated by a /.
+
+**Examples**
+ - ``//book/ancestor::categories``
+ - ``//categories[@genre="SciFi"]/book/ancestor::bookstore``
+ - ``book/ancestor::categories[@code=1]/books``
+
+**Limitations**
+ - Ancestor list elements can only be addressed using the list key leaf.
+ - List elements with compound keys are not supported.
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