MDXpy
A simple, yet elegant MDX library for TM1
Install
pip install mdxpy
Usage
Create MDX queries programmatically with the Member, MdxTuple, MdxHierarchySet, MdxBuilder classes.
Benefits of using MDXpy over hacking raw MDX queries in your code
- Faster to write
- Requires less MDX knowledge
- Eliminates syntax errors (e.g. forget
},],)in a query) forever - Makes code more robust and easier to refactor
- Escaping of
]in object names is taken care of
Member
Member is used in MdxTuple and MdxHierarchySet.
create a Member with the static Member.of(*args: str) method.
>>> member = Member.of("Product", "Product1")
>>> print(member.unique_name)
[PRODUCT].[PRODUCT].[PRODUCT1]
>>> member = Member.of("Region", "ByGeography", "UK")
>>> print(member.unique_name)
[REGION].[BYGEOGRAPHY].[UK]MdxTuple
Create a MdxTuple with the static of(*args: Member) method. The MDX expression of the tuple is generated with the to_mdx method.
>>> mdx_tuple = MdxTuple.of(Member.of("Product", "Product1"), Member.of("Region", "US"))
>>> print(mdx_tuple.to_mdx())
([PRODUCT].[PRODUCT].[PRODUCT1],[REGION].[REGION].[US])
>>> mdx_tuple = MdxTuple.of(Member.of("Product", "ByType", "Product1"), Member.of("Region", "ByGeography", "North America"))
>>> print(mdx_tuple.to_mdx())
([PRODUCT].[BYTYPE].[PRODUCT1],[REGION].[BYGEOGRAPHY].[North America])you can add a Member to a MdxTuple
>>> mdx_tuple = MdxTuple.of(Member.of("Product", "ByType", "Product1"))
>>> mdx_tuple.add_member(Member.of("Region", "ByGeography", "North America"))
>>> print(mdx_tuple.to_mdx())
([PRODUCT].[BYTYPE].[PRODUCT1],[REGION].[BYGEOGRAPHY].[NORTHAMERICA])MdxHierarchySet
MdxHierarchySet is created with any of the static methods on the MdxHierarchySet class. The MDX expression of the set is generated with the to_mdx method.
>>> mdx_set = MdxHierarchySet.tm1_subset_all("Product")
>>> print(mdx_set.to_mdx())
{TM1SUBSETALL([Product].[Product])}
>>> mdx_set = MdxHierarchySet.tm1_subset_to_set("Region", "By Geography", "Default")
>>> print(mdx_set.to_mdx())
{TM1SUBSETTOSET([REGION].[BYGEOGRAPHY],'Default')}
>>> mdx_set = MdxHierarchySet.all_leaves("Region")
>>> print(mdx_set.to_mdx())
{TM1FILTERBYLEVEL({TM1SUBSETALL([REGION].[REGION])},0)}
>>> mdx_set = MdxHierarchySet.members([Member.of("Region", "US"), Member.of("Product", "Product1")])
>>> print(mdx_set.to_mdx())
{[REGION].[REGION].[US],[PRODUCT].[PRODUCT].[PRODUCT1]}Functions on MdxHierarchySet can be concatenated to arbitrary length in a functional style:
>>> mdx_set = MdxHierarchySet.tm1_subset_all("Region").filter_by_level(0).filter_by_pattern("I*").tm1_sort()
>>> print(mdx_set.to_mdx())
{TM1SORT({TM1FILTERBYPATTERN({TM1FILTERBYLEVEL({TM1SUBSETALL([REGION].[REGION])},0)},'I*')},ASC)}MdxBuilder
The MdxBuilder is used to build MDX queries. MdxHierarchySet or MdxTuple are placed on the axes. Zero suppression can be switched on or off per axis. The actual MDX expression is generated with the to_mdx method.
>>> query = MdxBuilder.from_cube("Cube").add_hierarchy_set_to_column_axis(MdxHierarchySet.all_leaves("Product"))
>>> print(query.to_mdx())
SELECT {TM1FILTERBYLEVEL({TM1SUBSETALL([PRODUCT].[PRODUCT])},0)} ON 0
FROM [CUBE]
>>> query = MdxBuilder.from_cube("Cube").add_hierarchy_set_to_column_axis(MdxHierarchySet.member(Member.of("Product", "Product1")))
>>> print(query.to_mdx())
SELECT {[PRODUCT].[PRODUCT].[PRODUCT1]} ON 0
FROM [CUBE]
>>> query = MdxBuilder.from_cube("Cube").add_member_tuple_to_axis(0, Member.of("Product", "Product1"), Member.of("Region", "EMEA"))
>>> print(query.to_mdx())
SELECT
{([PRODUCT].[PRODUCT].[PRODUCT1],[REGION].[REGION].[EMEA])} ON 0
FROM [CUBE]
>>> query = MdxBuilder.from_cube("Cube").columns_non_empty().add_hierarchy_set_to_column_axis(MdxHierarchySet.member(Member.of("Product", "Product1")))
>>> print(query.to_mdx())
SELECT
NON EMPTY {[PRODUCT].[PRODUCT].[PRODUCT1]} ON 0
FROM [CUBE]MDX queries can have any number of axes. Axis 0 (=columns) must be defined.
>>> mdx = MdxBuilder.from_cube("Cube") \
.add_hierarchy_set_to_axis(0, MdxHierarchySet.member(Member.of("Region", "US"))) \
.add_hierarchy_set_to_axis(1, MdxHierarchySet.all_leaves("Product")) \
.add_hierarchy_set_to_axis(2, MdxHierarchySet.member(Member.of("Version", "Actual"))) \
.add_hierarchy_set_to_axis(3, MdxHierarchySet.tm1_subset_to_set("Time", "Time", "2020-Q1")) \
.to_mdx()
>>> print(mdx)
SELECT
{[REGION].[REGION].[US]} ON 0,
{TM1FILTERBYLEVEL({TM1SUBSETALL([PRODUCT].[PRODUCT])},0)} ON 1,
{[VERSION].[VERSION].[ACTUAL]} ON 2,
{TM1SUBSETTOSET([TIME].[TIME],'2020-Q1')} ON 3
FROM [CUBE]The CalculatedMember class is used to define query-scoped calculated members. They are used with the MdxBuilder through the with_member function.
>>> mdx = MdxBuilder.from_cube(cube="Record Rating").with_member(
CalculatedMember.avg(
dimension="Period",
hierarchy="Period",
element="AVG 2016",
cube="Record Rating",
mdx_set=MdxHierarchySet.children(member=Member.of("Period", "2016")),
mdx_tuple=MdxTuple.of(Member.of("Chart", "Total Charts"), Member.of("Record Rating Measure", "Rating")))) \
.add_hierarchy_set_to_row_axis(
MdxHierarchySet
.children(Member.of("Record", "Total Records"))
.top_count(cube="Record Rating", mdx_tuple=MdxTuple.of(Member.of("Period", "AVG 2016")), top=5)) \
.add_member_tuple_to_columns(Member.of("Period", "AVG 2016")) \
.where(Member.of("Chart", "Total Charts"), Member.of("Record Rating Measure", "Rating")) \
.to_mdx()
>>> print(mdx)
WITH
MEMBER [PERIOD].[PERIOD].[AVG2016] AS AVG({[PERIOD].[PERIOD].[2016].CHILDREN},[Record Rating].([CHART].[CHART].[TOTALCHARTS],[RECORDRATINGMEASURE].[RECORDRATINGMEASURE].[RATING]))
SELECT
{([PERIOD].[PERIOD].[AVG2016])} ON 0,
{TOPCOUNT({[RECORD].[RECORD].[TOTALRECORDS].CHILDREN},5,[RECORDRATING].([PERIOD].[PERIOD].[AVG2016]))} ON 1
FROM [RECORDRATING]
WHERE ([CHART].[CHART].[TOTALCHARTS],[RECORDRATINGMEASURE].[RECORDRATINGMEASURE].[RATING])To see all samples checkout the test.py file
Supported MDX Functions
- TM1SUBSETALL
- MEMBERS
- TM1SUBSETTOSET
- DEFAULTMEMBER
- PARENT
- FIRSTCHILD
- LASTCHILD
- CHILDREN
- ANCESTORS
- ANCESTOR
- DRILLDOWNLEVEL
- FILTER
- TM1FILTERBYPATTERN
- TM1FILTERBYLEVEL
- TM1SORT
- HEAD
- TAIL
- SUBSET
- TOPCOUNT
- BOTTOMCOUNT
- UNION
- INTERSECT
- EXCEPT
- ORDER
Tests
All tests in test.py
Contribution
Contribution is welcome. If you find a bug or feel like you can contribute please fork the repository, update the code and then create a pull request so we can merge in the changes.