WOQLClient

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WOQLClient
class terminusdb_client.WOQLClient(server_url, **kwargs)
Bases: object
Client for querying a TerminusDB server using WOQL queries.
server_url()
URL of the server that this client connected.
Type
str
api()
API endpoint for this client.
Type
str
team()
Team that this client is using. “admin” for local dbs.
Type
str
db()
Database that this client is connected to.
Type
str
user()
TerminiusDB user that this client is using. “admin” for local dbs.
Type
str
branch()
Branch of the database that this client is connected to. Default to “main”.
Type
str
ref()
Ref setting for the client. Default to None.
Type
str, None
repo()
Repo identifier of the database that this client is connected to. Default to “local”.
Type
str
init(server_url, **kwargs)
The WOQLClient constructor.
Parameter/s
server_url (str) – URL of the server that this client will connect to.
**kwargs – Extra configuration options
Property: team()
Property: db()
Property: user()
Property: branch()
Property: repo()
Property: ref()
connect(team='admin', db=None, remote_auth=None, use_token=False, jwt_token=None, api_token=None, key='root', user='admin', branch='main', ref=None, repo='local', **kwargs)
Connect to a Terminus server at the given URI with an API key.
Stores the connection settings and necessary meta-data for the connected server. You need to connect before most database operations.
Parameter/s
team (str) – Name of the team, default to be “admin”
db (optional, str) – Name of the database connected
remote_auth (optional, str) – Remote Auth setting
key (optional, str) – API key for connecting, default to be “root”
user (optional, str) – Name of the user, default to be “admin”
use_token (bool) – Use token to connect. If both jwt_token and api_token is not provided (None), then it will use the ENV variable TERMINUSDB_ACCESS_TOKEN to connect as the API token
jwt_token (optional, str) – The Bearer JWT token to connect. Default to be None.
api_token (optional, strs) – The API token to connect. Default to be None.
branch (optional, str) – Branch to be connected, default to be “main”
ref (optional, str) – Ref setting
repo (optional, str) – Local or remote repo, default to be “local”
**kwargs – Extra configuration options.
Example/s
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client = WOQLClient("https://127.0.0.1:6363")
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client.connect(key="root", team="admin", user="admin", db="example_db")
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Return type/s
None
close()
Undo connect and close the connection.
The connection will be unusable from this point forward; an Error (or subclass) exception will be raised if any operation is attempted with the connection, unless connect is call again.
Return type/s
None
get_commit_history(max_history=500)
Get the whole commit history. Commit history - Commit id, author of the commit, commit message and the commit time, in the current branch from the current commit, ordered backwards in time, will be returned in a dictionary in the follow format: {“commit_id”: {“author”: “commit_author”, “message”: “commit_message”, “timestamp: ” } }
Parameter/s
max_history (int, optional) – maximum number of commit that would return, counting backwards from your current commit. Default is set to 500. It need to be nop-negitive, if input is 0 it will still give the last commit.
Example/s
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from terminusdb_client import WOQLClient
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client = WOQLClient("https://127.0.0.1:6363"
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client.connect(db="bank_balance_example")
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client.get_commit_history()
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[{'commit': 's90wike9v5xibmrb661emxjs8k7ynwc', 'author': 'admin', 'message': 'Adding Jane', 'timestamp': datetime.da
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tetime(2020, 9, 3, 15, 29, 34)}, {'commit': '1qhge8qlodajx93ovj67kvkrkxsw3pg', 'author': '[email protected]', 'm
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essage': 'Adding Jim', 'timestamp': datetime.datetime(2020, 9, 3, 15, 29, 33)}, {'commit': 'rciy1rfu5foj67ch00ow6f6n
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njjxe3i', 'author': '[email protected].com', 'message': 'Update mike', 'timestamp': datetime.datetime(2020, 9, 3, 15,
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29, 33)}, {'commit': 'n4d86u8juzx852r2ekrega5hl838ovh', 'author': '[email protected]', 'message': 'Add mike', '
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timestamp': datetime.datetime(2020, 9, 3, 15, 29, 33)}, {'commit': '1vk2i8k8xce26p9jpi4zmq1h5vdqyuj', 'author': 'gav
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in@terminusdb.com', 'message': 'Label for balance was wrong', 'timestamp': datetime.datetime(2020, 9, 3, 15, 29, 33)
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}, {'commit': '9si4na9zv2qol9b189y92fia7ac3hbg', 'author': '[email protected]', 'message': 'Adding bank account
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object to schema', 'timestamp': datetime.datetime(2020, 9, 3, 15, 29, 33)}, {'commit': '9egc4h0m36l5rbq1alr1fki6jbfu
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kuv', 'author': 'TerminusDB', 'message': 'internal system operation', 'timstamp': datetime.datetime(2020, 9, 3, 15,
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29, 33)}]
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Return type/s
list
get_all_branches(get_data_version=False)
Get all the branches available in the database.
rollback(steps=1)
Curently not implementated. Please check back later.
Raises
NotImplementedError – Since TerminusDB currently does not support open transactions. This method is not applicable to it’s usage. To reset commit head, use WOQLClient.reset
Return type/s
None
copy()
Create a deep copy of this client.
Returns
The copied client instance.
Return type/s
WOQLClient
Example/s
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client = WOQLClient("https://127.0.0.1:6363/")
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clone = client.copy()
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assert client is not clone
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set_db(dbid, team=None)
Set the connection to another database. This will reset the connection.
Parameter/s
dbid (str) – Database identifer to set in the config.
team (str) – Team identifer to set in the config. If not passed in, it will use the current one.
Returns
The current database identifier.
Return type/s
str
Example/s
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client = WOQLClient("https://127.0.0.1:6363")
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client.set_db("database1")
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'database1'
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resource(ttype, val=None)
Create a resource identifier string based on the current config.
Parameter/s
ttype (ResourceType) – Type of resource.
val (str, optional) – Branch or commit identifier.
Returns
The constructed resource string.
Return type/s
str
Example/s
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client = WOQLClient("https://127.0.0.1:6363")
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client.resource(ResourceType.DB)
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'<team>/<db>/'
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client.resource(ResourceType.META)
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'<team>/<db>/_meta'
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client.resource(ResourceType.COMMITS)
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'<team>/<db>/<repo>/_commits'
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client.resource(ResourceType.REF, "<reference>")
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'<team>/<db>/<repo>/commit/<reference>'
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client.resource(ResourceType.BRANCH, "<branch>")
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'<team>/<db>/<repo>/branch/<branch>'
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create_database(dbid, team=None, label=None, description=None, prefixes=None, include_schema=True)
Create a TerminusDB database by posting a terminus:Database document to the Terminus Server.
Parameter/s
dbid (str) – Unique identifier of the database.
team (str, optional) – ID of the Team in which to create the DB (defaults to ‘admin’)
label (str, optional) – Database name.
description (str, optional) – Database description.
prefixes (dict, optional) – Optional dict containing "@base" and "@schema" keys.
@base (str)
IRI to use when doc: prefixes are expanded. Defaults to terminusdb:///data.
@schema (str)
IRI to use when scm: prefixes are expanded. Defaults to terminusdb:///schema.
include_schema (bool) – If True, a main schema graph will be created, otherwise only a main instance graph will be created.
Raises
InterfaceError – if the client does not connect to a server
Example/s
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client = WOQLClient("https://127.0.0.1:6363/")
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client.create_database("someDB", "admin", "Database Label", "My Description")
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Return type/s
None
delete_database(dbid=None, team=None, force=False)
Delete a TerminusDB database.
If team is provided, then the team in the config will be updated and the new value will be used in future requests to the server.
Parameter/s
dbid (str) – ID of the database to delete
team (str, optional) – the team in which the database resides (defaults to “admin”)
force (bool) –
Raises
UserWarning – If the value of dbid is None.
InterfaceError – if the client does not connect to a server.
Example/s
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client = WOQLClient("https://127.0.0.1:6363/")
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client.delete_database("<database>", "<team>")
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Return type/s
None
get_triples(graph_type)
Retrieves the contents of the specified graph as triples encoded in turtle format
Parameter/s
graph_type (str) – Graph type, either “instance” or “schema”.
Raises
InterfaceError – if the client does not connect to a database
Return type/s
str
update_triples(graph_type, turtle, commit_msg)
Updates the contents of the specified graph with the triples encoded in turtle format Replaces the entire graph contents
Parameter/s
graph_type (str) – Graph type, either “instance” or “schema”.
turtle – Valid set of triples in Turtle format.
commit_msg (str) – Commit message.
Raises
InterfaceError – if the client does not connect to a database
Return type/s
None
insert_triples(graph_type, turtle, commit_msg=None)
Inserts into the specified graph with the triples encoded in turtle format.
Parameter/s
graph_type (str) – Graph type, either “instance” or “schema”.
turtle – Valid set of triples in Turtle format.
commit_msg (str) – Commit message.
Raises
InterfaceError – if the client does not connect to a database
Return type/s
None
query_document(document_template, graph_type='instance', skip=0, count=None, as_list=False, get_data_version=False, **kwargs)
Retrieves all documents that match a given document template
Parameter/s
document_template (dict) – Template for the document that is being retrived
graph_type (str, optional) – Graph type, either “instance” or “schema”.
as_list (bool) – If the result returned as list rather than an iterator.
get_data_version (bool) – If the data version of the document(s) should be obtained. If True, the method return the result and the version as a tuple.
Raises
InterfaceError – if the client does not connect to a database
Return type/s
Iterable
get_document(iri_id, graph_type='instance', get_data_version=False, **kwargs)
Retrieves the document of the iri_id
Parameter/s
iri_id (str) – Iri id for the docuemnt that is retriving
graph_type (str, optional) – Graph type, either “instance” or “schema”.
get_data_version (bool) – If the data version of the document(s) should be obtained. If True, the method return the result and the version as a tuple.
kwargs – Additional boolean flags for retriving. Currently avaliable: “prefixed”, “minimized”, “unfold”
Raises
InterfaceError – if the client does not connect to a database
Return type/s
dict
get_documents_by_type(doc_type, graph_type='instance', skip=0, count=None, as_list=False, get_data_version=False, **kwargs)
Retrieves the documents by type
Parameter/s
doc_type (str) – Specific type for the docuemnts that is retriving
graph_type (str, optional) – Graph type, either “instance” or “schema”.
skip (int) – The starting posiion of the returning results, default to be 0
count (int* or *none) – The maximum number of returned result, if None (default) it will return all of the avalible result.
as_list (bool) – If the result returned as list rather than an iterator.
get_data_version (bool) – If the version of the document(s) should be obtained. If True, the method return the result and the version as a tuple.
kwargs – Additional boolean flags for retriving. Currently avaliable: “prefixed”, “unfold”
Raises
InterfaceError – if the client does not connect to a database
Returns
Stream of dictionaries
Return type/s
iterable
get_all_documents(graph_type='instance', skip=0, count=None, as_list=False, get_data_version=False, **kwargs)
Retrieves all avalibale the documents
Parameter/s
graph_type (str, optional) – Graph type, either “instance” or “schema”.
skip (int) – The starting posiion of the returning results, default to be 0
count (int* or *none) – The maximum number of returned result, if None (default) it will return all of the avalible result.
as_list (bool) – If the result returned as list rather than an iterator.
get_data_version (bool) – If the version of the document(s) should be obtained. If True, the method return the result and the version as a tuple.
kwargs – Additional boolean flags for retriving. Currently avaliable: “prefixed”, “unfold”
Raises
InterfaceError – if the client does not connect to a database
Returns
Stream of dictionaries
Return type/s
iterable
get_existing_classes()
Get all the existing classes (only ids) in a database.
insert_document(document, graph_type='instance', full_replace=False, commit_msg=None, last_data_version=None)
Inserts the specified document(s)
Parameter/s
document (dict* or *list of dict) – Document(s) to be inserted.
graph_type (str) – Graph type, either “inference”, “instance” or “schema”.
full_replace: – bool: If True then the whole graph will be replaced. WARNING: you should also supply the context object as the first element in the list of documents if using this option.
commit_msg (str) – Commit message.
last_data_version (str) – Last version before the update, used to check if the document has been changed unknowingly
Raises
InterfaceError – if the client does not connect to a database
Returns
list of ids of the inseted docuemnts
Return type/s
list
replace_document(document, graph_type='instance', commit_msg=None, last_data_version=None, create=False)
Updates the specified document(s)
Parameter/s
document (dict* or *list of dict) – Document(s) to be updated.
graph_type (str) – Graph type, either “instance” or “schema”.
commit_msg (str) – Commit message.
last_data_version (str) – Last version before the update, used to check if the document has been changed unknowingly
create (bool) – Create the document if it does not yet exist.
Raises
InterfaceError – if the client does not connect to a database
Return type/s
None
update_document(document, graph_type='instance', commit_msg=None, last_data_version=None)
Updates the specified document(s). Add the document if not existed.
Parameter/s
document (dict* or *list of dict) – Document(s) to be updated.
graph_type (str) – Graph type, either “instance” or “schema”.
commit_msg (str) – Commit message.
last_data_version (str) – Last version before the update, used to check if the document has been changed unknowingly
Raises
InterfaceError – if the client does not connect to a database
Return type/s
None
delete_document(document, graph_type='instance', commit_msg=None, last_data_version=None)
Delete the specified document(s)
Parameter/s
document (str* or **list of str*) – Document(s) (as dictionary or DocumentTemplate objects) or id(s) of document(s) to be updated.
graph_type (str) – Graph type, either “instance” or “schema”.
commit_msg (str) – Commit message.
last_data_version (str) – Last version before the update, used to check if the document has been changed unknowingly
Raises
InterfaceError – if the client does not connect to a database
Return type/s
None
has_doc(doc_id, graph_type='instance')
Check if a certain document exist in a database
Parameter/s
doc_id (str) – Id of document to be checked.
graph_type (str) – Graph type, either “instance” or “schema”.
Returns
if the document exist
Return type/s
Bool
get_class_frame(class_name)
Get the frame of the class of class_name. Provide information about all the avaliable properties of that class.
Parameter/s
class_name (str) – Name of the class
Returns
Dictionary containing information
Return type/s
dict
commit()
Not implementated: open transactions currently not suportted. Please check back later.
query(woql_query, commit_msg=None, get_data_version=False, last_data_version=None)
Updates the contents of the specified graph with the triples encoded in turtle format Replaces the entire graph contents
Parameter/s
woql_query (dict* or *WOQLQuery object) – A woql query as an object or dict
commit_mg (str) – A message that will be written to the commit log to describe the change
get_data_version (bool) – If the data version of the query result(s) should be obtained. If True, the method return the result and the version as a tuple.
last_data_version (str) – Last version before the update, used to check if the document has been changed unknowingly
file_dict (deprecated) – File dictionary to be associated with post name => filename, for multipart POST
Raises
InterfaceError – if the client does not connect to a database
Example/s
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WOQLClient(server="http://localhost:6363").query(woql, "updating graph")
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Return type/s
dict
create_branch(new_branch_id, empty=False)
Create a branch starting from the current branch.
Parameter/s
new_branch_id (str) – New branch identifier.
empty (bool) – Create an empty branch if true (no starting commit)
Raises
InterfaceError – if the client does not connect to a database
Return type/s
None
delete_branch(branch_id)
Delete a branch
Parameter/s
branch_id (str) – Branch to delete
Raises
InterfaceError – if the client does not connect to a database
Return type/s
None
pull(remote='origin', remote_branch=None, message=None, author=None)
Pull updates from a remote repository to the current database.
Parameter/s
remote (str) – remote to pull from, default “origin”
remote_branch (str, optional) – remote branch to pull from, default to be your current barnch
message (str, optional) – optional commit message
author (str, optional) – option to overide the author of the operation
Raises
InterfaceError – if the client does not connect to a database
Return type/s
dict
Example/s
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client = WOQLClient("https://127.0.0.1:6363/")
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client.pull()
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fetch(remote_id)
Fatch the brach from a remote
Parameter/s
remote_id (str) – id of the remote
Raises
InterfaceError – if the client does not connect to a database
Return type/s
dict
push(remote='origin', remote_branch=None, message=None, author=None)
Push changes from a branch to a remote repo
Parameter/s
remote (str) – remote to push to, default “origin”
remote_branch (str, optional) – remote branch to push to, default to be your current barnch
message (str, optional) – optional commit message
author (str, optional) – option to overide the author of the operation
Raises
InterfaceError – if the client does not connect to a database
Example/s
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WOQLClient(server="http://localhost:6363").push(remote="origin", remote_branch = "main", author = "admin", message = "commit message"})
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Return type/s
dict
rebase(branch=None, commit=None, rebase_source=None, message=None, author=None)
Rebase the current branch onto the specified remote branch. Need to specify one of ‘branch’,’commit’ or the ‘rebase_source’.
Notes
The “remote” repo can live in the local database.
Parameter/s
branch (str, optional) – the branch for the rebase
rebase_source (str, optional) – the source branch for the rebase
message (str, optional) – the commit message
author (str, optional) – the commit author
Raises
InterfaceError – if the client does not connect to a database
Return type/s
dict
Example/s
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client = WOQLClient("https://127.0.0.1:6363/")
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client.rebase("the_branch")
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reset(commit=None, soft=False, use_path=False)
Reset the current branch HEAD to the specified commit path. If soft is not True, it will be a hard reset, meaning reset to that commit in the backend and newer commit will be wipped out. If soft is True, the client will only reference to that commit and can be reset to the newest commit when done.
Raises
InterfaceError – if the client does not connect to a database
Notes
The “remote” repo can live in the local database.
Parameter/s
commit (string) – Commit id or path to the commit (if use_path is True), for instance ‘234980523ffaf93’ or ‘admin/database/local/commit/234980523ffaf93’. If not provided, it will reset to the newest commit (useful when need to go back after a soft reset).
soft (bool) – Flag indicating if the reset if soft, that is referencing to a previous commit instead of resetting to a previous commit in the backend and wipping newer commits.
use_path (bool) – Wheather or not the commit given is an id or path. Default using id and use_path is False.
Example/s
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client = WOQLClient("https://127.0.0.1:6363/")
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client.reset('234980523ffaf93')
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client.reset('admin/database/local/commit/234980523ffaf93', use_path=True)
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Return type/s
None
optimize(path)
Optimize the specified path.
Raises
InterfaceError – if the client does not connect to a database
Notes
The “remote” repo can live in the local database.
Parameter/s
path (string) – Path to optimize, for instance admin/database/_meta for the repo graph.
Example/s
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client = WOQLClient("https://127.0.0.1:6363/")
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client.optimize('admin/database') # optimise database branch (here main)
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client.optimize('admin/database/_meta') # optimise the repository graph (actually creates a squashed flat layer)
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client.optimize('admin/database/local/_commits') # commit graph is optimised
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Return type/s
None
squash(message=None, author=None, reset=False)
Squash the current branch HEAD into a commit
Raises
InterfaceError – if the client does not connect to a database
Notes
The “remote” repo can live in the local database.
Parameter/s
message (string) – Message for the newly created squash commit
author (string) – Author of the commit
reset (bool) – Perform reset after squash
Returns
commit id to be reset
Return type/s
str
Example/s
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client = WOQLClient("https://127.0.0.1:6363/")
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client.connect(user="admin", key="root", team="admin", db="some_db")
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client.squash('This is a squash commit message!')
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diff(before, after)
Perform diff on 2 set of document(s), result in a Patch object
Returns
Patch object
Return type/s
obj
Example/s
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client = WOQLClient("https://127.0.0.1:6363/")
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client.connect(user="admin", key="root", team="admin", db="some_db")
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result = client.diff({ "@id" : "Person/Jane", "@type" : "Person", "name" : "Jane"}, { "@id" : "Person/Jane", "@type" : "Person", "name" : "Janine"})
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result.to_json = '{ "name" : { "@op" : "SwapValue", "@before" : "Jane", "@after": "Janine" }}'
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patch(before, patch)
Apply the patch object to the before object and return an after object. Note that this change does not commit changes to the graph.
Returns
After object
Return type/s
dict
Example/s
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client = WOQLClient("https://127.0.0.1:6363/")
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client.connect(user="admin", key="root", team="admin", db="some_db")
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patch_obj = Patch(json='{"name" : { "@op" : "ValueSwap", "@before" : "Jane", "@after": "Janine" }}')
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result = client.patch({ "@id" : "Person/Jane", "@type" : Person", "name" : "Jane"}, patch_obj)
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print(result)
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'{ "@id" : "Person/Jane", "@type" : Person", "name" : "Janine"}'
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clonedb(clone_source, newid, description=None)
Clone a remote repository and create a local copy.
Parameter/s
clone_source (str) – The source url of the repo to be cloned.
newid (str) – Identifier of the new repository to create.
Description (str, optional) – Optional description about the cloned database.
Raises
InterfaceError – if the client does not connect to a database
Example/s
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client = WOQLClient("https://127.0.0.1:6363/")
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client.clonedb("http://terminusdb.com/some_user/test_db", "my_test_db")
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Return type/s
None
get_database(dbid)
Returns metadata (id, organization, label, comment) about the requested database :type dbid: str :param dbid: The id of the database :type dbid: str
Raises
InterfaceError – if the client does not connect to a server
Return type/s
dict or None if not found
get_databases()
Returns a list of database metadata records for all databases the user has access to
Raises
InterfaceError – if the client does not connect to a server
Return type/s
list of dicts
list_databases()
Returns a list of database ids for all databases the user has access to
Raises
InterfaceError – if the client does not connect to a server
Return type/s
list of dicts