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‎docs/developers/operations.ipynb‎

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{
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"cells": [
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{
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"cell_type": "markdown",
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"id": "edcc1fd6-2474-4d15-8355-084ef85bc748",
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"metadata": {},
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"source": [
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"# Operations development"
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]
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},
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{
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"cell_type": "markdown",
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"id": "e191786a-786a-418e-886a-a4da0c2d741e",
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"metadata": {},
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"source": [
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"SimPhoNy operations are actions (written in Python) that can be executed on\n",
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"demand on any ontology individual belonging to the ontology class they\n",
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"are defined for."
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]
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},
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{
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"cell_type": "markdown",
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"id": "7ea449f9-bc08-4ddc-a8a8-13c6d3ade2ef",
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"metadata": {},
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"source": [
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"<div class=\"admonition important\">\n",
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"<div class=\"admonition-title\" style=\"font-weight: bold\"><div style=\"display: inline-block\">Tip</div></div>\n",
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" \n",
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"File uploads and downloads in SimPhoNy are an example of SimPhoNy operations.\n",
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"Head to the [assertional knowledge](../usage/assertional_knowledge.html#Operations) section to see them in action.\n",
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" \n",
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"</div>"
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]
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},
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{
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"cell_type": "markdown",
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"id": "ee275d73-f2ef-4418-bc94-cec8458c803c",
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"metadata": {},
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"source": [
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"\n",
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"SimPhoNy operations are distributed as (or as part of) Python packages. \n",
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"Developing operations for an ontology class is fairly simple. To do so, import the [Operations abstract class](../api_reference.md#simphony_osp.development.Operations) from the `simphony_osp.development` module, and create an implementation by subclassing it.\n",
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"\n",
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"Then, define an `iri` attribute having as value the IRI of the ontology class that the\n",
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"operation should be associated to. Every public method ([not starting with\n",
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"an underscore](https://peps.python.org/pep-0008/#method-names-and-instance-variables)) defined on the implementation is automatically detected and\n",
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"assigned as an operation to said ontology class. The\n",
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"[ontology individual object](../usage/assertional_knowledge.ipynb#Ontology-individual-objects)\n",
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"on which the operation is called is available as the private attribute\n",
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"`_individual` on every instance of the implementation. For a specific \n",
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"ontology individual, the implementation gets instantiated the first time that \n",
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"any operation defined on it is called by the user.\n",
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"\n",
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"Finally, define an\n",
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"[entry point](https://packaging.python.org/en/latest/specifications/entry-points/#entry-points-specification)\n",
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"(or many if implementing operations for several ontology classes) under the\n",
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"`simphony_osp.ontology.operations`\n",
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"[group](https://packaging.python.org/en/latest/specifications/entry-points/#data-model)\n",
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"that points to your\n",
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"implementation of the `Operations` abstract class.\n",
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"\n",
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"An example implementation of an operation that takes advantage of\n",
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"[geopy](https://pypi.org/project/geopy/) to compute the distance between \n",
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"two points on Earth defined using the \n",
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"[WGS84 Geo Positioning vocabulary](https://www.w3.org/2003/01/geo/wgs84_pos)\n",
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"is shown below."
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]
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},
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{
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"cell_type": "markdown",
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"id": "0fffa052-186a-46b7-9076-8acfed6b1ee0",
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"metadata": {},
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"source": [
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"```python\n",
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"\"\"\"Operations for classes from the WGS84 Geo Positioning vocabulary.\"\"\"\n",
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"\n",
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"from geopy import distance\n",
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"from simphony_osp.namespaces import wgs84_pos\n",
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"from simphony_osp.ontology import OntologyIndividual\n",
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"from simphony_osp.ontology.operations import Operations\n",
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"\n",
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"\n",
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"class Wgs84Pos(Operations):\n",
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" \"\"\"Operations for the Point ontology class.\"\"\"\n",
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"\n",
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" iri = wgs84_pos.Point.iri\n",
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"\n",
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" def distance(self, other: OntologyIndividual) -> float:\n",
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" \"\"\"Compute the distance between two points on Earth.\n",
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" \n",
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" Args:\n",
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" other: Another point with respect to which the distance will be computed. \n",
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" \n",
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" Returns:\n",
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" The distance between this point and the given one in km.\n",
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" \"\"\"\n",
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" lat_self = float(self._individual[wgs84_pos.latitude].one())\n",
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" long_self = float(self._individual[wgs84_pos.longitude].one())\n",
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" lat_other = float(other[wgs84_pos.latitude].one())\n",
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" long_other = float(other[wgs84_pos.longitude].one())\n",
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" return distance.geodesic(\n",
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" (lat_self, long_self),\n",
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" (lat_other, long_other),\n",
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" ellipsoid=\"WGS-84\"\n",
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" ).km\n",
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"\n",
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"```"
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]
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},
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{
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"cell_type": "markdown",
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"id": "744e037f-aabe-4bdf-a994-8787f3f039b1",
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"metadata": {},
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"source": [
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"<div class=\"admonition note\">\n",
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"<div class=\"admonition-title\" style=\"font-weight: bold\"><div style=\"display: inline-block\">Note</div></div>\n",
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" \n",
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"Remember that the implementation above is still not enough for the operation to\n",
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"work: the corresponding \n",
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"[entry point](https://packaging.python.org/en/latest/specifications/entry-points/#entry-points-specification)\n",
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"for `Wgs84Pos` must have been defined and the `wgs84_pos` vocabulary needs to be installed using [pico](../usage/ontologies/pico.html).\n",
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" \n",
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"</div>"
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]
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},
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{
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"cell_type": "markdown",
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"id": "d3db93d6-e26f-4831-b9a2-d9223cc4a51f",
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"metadata": {},
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"source": [
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"The operation can be used as follows."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 1,
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"id": "40a97048-80ea-4d99-8711-3ecd6ab5598b",
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"metadata": {},
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"outputs": [
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"cells": [
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{
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"cell_type": "markdown",
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"id": "edcc1fd6-2474-4d15-8355-084ef85bc748",
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"metadata": {},
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"source": [
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"# Operations development"
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]
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},
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{
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"cell_type": "markdown",
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"id": "e191786a-786a-418e-886a-a4da0c2d741e",
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"metadata": {},
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"source": [
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"SimPhoNy operations are actions (written in Python) that can be executed on\n",
17+
"demand on any ontology individual belonging to the ontology class they\n",
18+
"are defined for."
19+
]
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},
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{
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"data": {
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"text/plain": [
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"417.4695920611045"
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"cell_type": "markdown",
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"id": "7ea449f9-bc08-4ddc-a8a8-13c6d3ade2ef",
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"metadata": {},
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"source": [
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"<div class=\"admonition important\">\n",
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"<div class=\"admonition-title\" style=\"font-weight: bold\"><div style=\"display: inline-block\">Tip</div></div>\n",
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" \n",
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"File uploads and downloads in SimPhoNy are an example of SimPhoNy operations.\n",
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"Head to the [assertional knowledge](../usage/assertional_knowledge.html#Operations) section to see them in action.\n",
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" \n",
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"</div>"
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]
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},
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"execution_count": 1,
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"metadata": {},
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"output_type": "execute_result"
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},
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{
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"cell_type": "markdown",
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"id": "ee275d73-f2ef-4418-bc94-cec8458c803c",
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"metadata": {},
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"source": [
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"\n",
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"SimPhoNy operations are distributed as (or as part of) Python packages. \n",
42+
"Developing operations for an ontology class is fairly simple. To do so, import the [Operations abstract class](../api_reference.md#simphony_osp.development.Operations) from the `simphony_osp.development` module, and create an implementation by subclassing it.\n",
43+
"\n",
44+
"Then, define an `iri` attribute having as value the IRI of the ontology class that the\n",
45+
"operation should be associated to. Every public method ([not starting with\n",
46+
"an underscore](https://peps.python.org/pep-0008/#method-names-and-instance-variables)) defined on the implementation is automatically detected and\n",
47+
"assigned as an operation to said ontology class. The\n",
48+
"[ontology individual object](../usage/assertional_knowledge.ipynb#Ontology-individual-objects)\n",
49+
"on which the operation is called is available as the private attribute\n",
50+
"`_individual` on every instance of the implementation. For a specific \n",
51+
"ontology individual, the implementation gets instantiated the first time that \n",
52+
"any operation defined on it is called by the user.\n",
53+
"\n",
54+
"Finally, define an\n",
55+
"[entry point](https://packaging.python.org/en/latest/specifications/entry-points/#entry-points-specification)\n",
56+
"(or many if implementing operations for several ontology classes) under the\n",
57+
"`simphony_osp.ontology.operations`\n",
58+
"[group](https://packaging.python.org/en/latest/specifications/entry-points/#data-model)\n",
59+
"that points to your\n",
60+
"implementation of the `Operations` abstract class.\n",
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"\n",
62+
"An example implementation of an operation that takes advantage of\n",
63+
"[geopy](https://pypi.org/project/geopy/) to compute the distance between \n",
64+
"two points on Earth defined using the \n",
65+
"[WGS84 Geo Positioning vocabulary](https://www.w3.org/2003/01/geo/wgs84_pos)\n",
66+
"is shown below."
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]
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},
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{
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"cell_type": "markdown",
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"id": "0fffa052-186a-46b7-9076-8acfed6b1ee0",
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"metadata": {},
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"source": [
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"```python\n",
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"\"\"\"Operations for classes from the WGS84 Geo Positioning vocabulary.\"\"\"\n",
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"\n",
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"from geopy import distance\n",
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"from simphony_osp.namespaces import wgs84_pos\n",
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"from simphony_osp.ontology import OntologyIndividual\n",
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"from simphony_osp.ontology.operations import Operations\n",
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"\n",
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"\n",
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"class Wgs84Pos(Operations):\n",
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" \"\"\"Operations for the Point ontology class.\"\"\"\n",
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"\n",
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" iri = wgs84_pos.Point.iri\n",
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"\n",
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" def distance(self, other: OntologyIndividual) -> float:\n",
89+
" \"\"\"Compute the distance between two points on Earth.\n",
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" \n",
91+
" Args:\n",
92+
" other: Another point with respect to which the distance will be computed. \n",
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" \n",
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" Returns:\n",
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" The distance between this point and the given one in km.\n",
96+
" \"\"\"\n",
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" lat_self = float(self._individual[wgs84_pos.latitude].one())\n",
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" long_self = float(self._individual[wgs84_pos.longitude].one())\n",
99+
" lat_other = float(other[wgs84_pos.latitude].one())\n",
100+
" long_other = float(other[wgs84_pos.longitude].one())\n",
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" return distance.geodesic(\n",
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" (lat_self, long_self),\n",
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" (lat_other, long_other),\n",
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" ellipsoid=\"WGS-84\"\n",
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" ).km\n",
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"\n",
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"```"
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]
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},
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{
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"cell_type": "markdown",
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"id": "744e037f-aabe-4bdf-a994-8787f3f039b1",
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"metadata": {},
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"source": [
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"<div class=\"admonition note\">\n",
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"<div class=\"admonition-title\" style=\"font-weight: bold\"><div style=\"display: inline-block\">Note</div></div>\n",
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" \n",
118+
"Remember that the implementation above is still not enough for the operation to\n",
119+
"work: the corresponding \n",
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"[entry point](https://packaging.python.org/en/latest/specifications/entry-points/#entry-points-specification)\n",
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"for `Wgs84Pos` must have been defined and the `wgs84_pos` vocabulary needs to be installed using [pico](../usage/ontologies/pico.html).\n",
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" \n",
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"</div>"
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]
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},
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{
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"cell_type": "markdown",
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"id": "d3db93d6-e26f-4831-b9a2-d9223cc4a51f",
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"metadata": {},
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"source": [
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"The operation can be used as follows."
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]
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},
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{
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"cell_type": "code",
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"execution_count": 1,
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"id": "40a97048-80ea-4d99-8711-3ecd6ab5598b",
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/plain": [
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"417.4695920611045"
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]
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},
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"execution_count": 1,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"from simphony_osp.namespaces import wgs84_pos\n",
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"\n",
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"location_freiburg = wgs84_pos.Point()\n",
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"location_freiburg[wgs84_pos.latitude] = 47.997791\n",
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"location_freiburg[wgs84_pos.longitude] = 7.842609\n",
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"\n",
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"location_paris = wgs84_pos.Point()\n",
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"location_paris[wgs84_pos.latitude] = 48.85333\n",
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"location_paris[wgs84_pos.longitude] = 2.34885\n",
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"\n",
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"location_freiburg.operations.distance(location_paris)"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.8.12"
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}
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],
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"source": [
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"from simphony_osp.namespaces import wgs84_pos\n",
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"\n",
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"location_freiburg = wgs84_pos.Point()\n",
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"location_freiburg[wgs84_pos.latitude] = 47.997791\n",
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"location_freiburg[wgs84_pos.longitude] = 7.842609\n",
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"\n",
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"location_paris = wgs84_pos.Point()\n",
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"location_paris[wgs84_pos.latitude] = 48.85333\n",
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"location_paris[wgs84_pos.longitude] = 2.34885\n",
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"\n",
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"location_freiburg.operations.distance(location_paris)"
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]
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}
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],
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"metadata": {
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"kernelspec": {
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"display_name": "Python 3",
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"language": "python",
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"name": "python3"
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},
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"language_info": {
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"codemirror_mode": {
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"name": "ipython",
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"version": 3
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},
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"file_extension": ".py",
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"mimetype": "text/x-python",
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"name": "python",
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"nbconvert_exporter": "python",
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"pygments_lexer": "ipython3",
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"version": "3.8.12"
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}
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},
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"nbformat": 4,
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"nbformat_minor": 5
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"nbformat": 4,
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"nbformat_minor": 5
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}

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