From 7c3f39504a14c056d860e09ece970ccde349053f Mon Sep 17 00:00:00 2001
From: JakobKrieg <jakob.krieg@bcmsolutions.de>
Date: Tue, 4 Aug 2020 20:46:50 +0200
Subject: Adding Modeling Concepts documentation from COnfluence to RDT

Issue-ID: CCSDK-2615
Change-Id: Ib5dfaecc96e8fac1dda07aa6c13aba5ded81efee
Signed-off-by: JakobKrieg <jakob.krieg@bcmsolutions.de>
---
 docs/modelingconcepts/expression.rst | 101 +++++++++++++++++++++++++++++++++++
 1 file changed, 101 insertions(+)
 create mode 100644 docs/modelingconcepts/expression.rst

(limited to 'docs/modelingconcepts/expression.rst')

diff --git a/docs/modelingconcepts/expression.rst b/docs/modelingconcepts/expression.rst
new file mode 100644
index 000000000..639f700ef
--- /dev/null
+++ b/docs/modelingconcepts/expression.rst
@@ -0,0 +1,101 @@
+.. This work is a derivative of https://wiki.onap.org/display/DW/Modeling+Concepts#Concepts-198012600 by IBM 
+.. used under Creative Commons Attribution 4.0 International License.
+.. http://creativecommons.org/licenses/by/4.0
+.. Copyright (C) 2020 Deutsche Telekom AG.
+
+
+.. _expression:
+
+Expression
+-------------------------------------
+
+TOSCA provides for a set of functions to reference elements within the template or to retrieve runtime values.
+
+**Below is a list of supported expressions**
+
+.. tabs::
+
+   .. tab:: get_input
+
+      **get_input**
+
+      The **get_input** function is used to retrieve the values of properties declared 
+      within the inputs section of a TOSCA Service Template.
+
+      Within CDS, this is mainly Workflow inputs.
+
+      `TOSCA specification 
+      <http://docs.oasis-open.org/tosca/TOSCA-Simple-Profile-YAML/v1.2/csd01/TOSCA-Simple-Profile-YAML-v1.2-csd01.html#_Toc494454178>`_
+
+      **Example:**
+
+      `<https://github.com/onap/ccsdk-cds/blob/master/components/model-catalog/blueprint-model/test-blueprint/golden/Definitions/golden-blueprint.json#L210>`_
+
+      .. code-block:: JSON
+         
+         "resolution-key": {
+         "get_input": "resolution-key"
+         }
+         
+   .. tab:: get_property
+
+      **get_property**
+
+      The **get_property** function is used to retrieve property values between modelable 
+      entities defined in the same service template.
+
+      `TOSCA specification 
+      <http://docs.oasis-open.org/tosca/TOSCA-Simple-Profile-YAML/v1.2/csd01/TOSCA-Simple-Profile-YAML-v1.2-csd01.html#_Toc494454178>`_
+
+      **Example:**
+
+      TBD
+
+   .. tab:: get_attribute
+
+      **get_attribute**
+
+      The **get_attribute** function is used to retrieve the values of named attributes declared 
+      by the referenced node or relationship template name.
+
+      `TOSCA specification 
+      <http://docs.oasis-open.org/tosca/TOSCA-Simple-Profile-YAML/v1.2/csd01/TOSCA-Simple-Profile-YAML-v1.2-csd01.html#_Toc494454178>`_
+
+      **Example:**
+
+      `<https://github.com/onap/ccsdk-cds/blob/master/components/model-catalog/blueprint-model/test-blueprint/golden/Definitions/golden-blueprint.json#L64-L67>`_
+
+      .. code-block:: JSON
+         
+         "get_attribute": [
+            "resource-assignment",
+            "assignment-params"
+         ]
+
+   .. tab:: get_operation_output
+
+      **get_operation_output**
+
+      The **get_operation_output** function is used to retrieve property values between modelable 
+      entities defined in the same service template.
+
+      `TOSCA specification 
+      <http://docs.oasis-open.org/tosca/TOSCA-Simple-Profile-YAML/v1.2/csd01/TOSCA-Simple-Profile-YAML-v1.2-csd01.html#_Toc494454180>`_
+
+      **Example:**
+
+      TBD
+
+   .. tab:: get_artifact
+
+      **get_artifact**
+
+      The **get_artifact** function is used to retrieve property values between modelable 
+      entities defined in the same service template.
+
+      `TOSCA specification 
+      <http://docs.oasis-open.org/tosca/TOSCA-Simple-Profile-YAML/v1.2/csd01/TOSCA-Simple-Profile-YAML-v1.2-csd01.html#_Toc494454182>`_
+
+      **Example:**
+
+      TBD
\ No newline at end of file
-- 
cgit 1.2.3-korg