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Diffstat (limited to 'docs/cps-path.rst')
| -rw-r--r-- | docs/cps-path.rst | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/docs/cps-path.rst b/docs/cps-path.rst index a24bf1e9fe..08892e09ec 100644 --- a/docs/cps-path.rst +++ b/docs/cps-path.rst @@ -223,7 +223,7 @@ descendant-path leaf-conditions --------------- -**Syntax**: ``<xpath> '[' @<leaf-name1> '=' <leaf-value1> ( ' and ' @<leaf-name> '=' <leaf-value> )* ']'`` +**Syntax**: ``<xpath> '[' @<leaf-name1> '=' <leaf-value1> ( ' <and|or> ' @<leaf-name> '=' <leaf-value> )* ']'`` - ``xpath``: Absolute or descendant or xpath to the (list) node which elements will be queried. - ``leaf-name``: The name of the leaf which value needs to be compared. - ``leaf-value``: The required value of the leaf. @@ -233,10 +233,13 @@ leaf-conditions - ``//categories[@name="Kids"]`` - ``//categories[@name='Kids']`` - ``//categories[@code='1']/books/book[@title='Dune' and @price=5]`` + - ``//categories[@code='1']/books/book[@title='xyz' or @price=15]`` - ``//categories[@code=1]`` **Limitations** - Only the last list or container can be queried leaf values. Any ancestor list will have to be referenced by its key name-value pair(s). - - Multiple attributes can only be combined using ``and``. ``or`` and bracketing is not supported. + - When mixing ``and/or`` operators, ``and`` has precedence over ``or`` . So ``and`` operators get evaluated first. + - Bracketing is not supported. + - Leaf names are not validated so ``or`` operations with invalid leaf names will silently be ignored. - Only leaves can be used, leaf-list are not supported. - Only string and integer values are supported, boolean and float values are not supported. - The key should be supplied with correct data type for it to be queried from DB. In the last example above the attribute code is of type |