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Object-oriented Python library to interact with Neo4j standalone REST server

Project description

Neo4j Python REST Client

synopsis:Object-oriented Python library to interact with Neo4j standalone REST server.

The first objective of Neo4j Python REST Client is to make transparent for Python programmers the use of a local database through neo4j.py or a remote database thanks to Neo4j REST Server. So, the syntax of this API is fully compatible with neo4j.py. However, a new syntax is introduced in order to reach a more pythonic style.

Installation

Available throught Python Package Index:

$ pip install neo4jrestclient

Or:

$ easy_install neo4jrestclient

Getting started

The main class is GraphDatabase, exactly how in neo4j.py:

>>> from neo4jrestclient.client import GraphDatabase

>>> gdb = GraphDatabase("http://localhost:7474/db/data/")

Due to the syntax is fully compatible with neo4j.py, the next lines only show the commands added and its differences.

Creating a node:

>>> n = gdb.nodes.create()

# Equivalent to
>>> n = gdb.node()

Specify properties for new node:

>>> n = gdb.nodes.create(color="Red", widht=16, height=32)

Accessing properties:

>>> value = n['key'] # Get property value

>>> n['key'] = value # Set property value

Create relationship:

>>> n1.relationships.create("Knows", n2) # Usefull when the name of
                                         # relationship is stored in a variable

Specify properties for new relationships:

>>> n1.Knows(n2, since=123456789, introduced_at="Christmas party")

Documentation

For an extended and lates version of the documentation, please, visit the docs site:: http://readthedocs.org/docs/neo4j-rest-client/en/latest/

Changes

1.6.1 (2012-02-27)

  • Fixes #29. Adding support for authentication.

1.6.0 (2012-02-27)

  • Adding documentation site.
  • Finishing the experimental support for indexing and transactions.
  • Adding preliminar indexing support in trasnsactions.
  • Adding a new way to traverse the graph based on python-embedded.
  • Removing __credits__ in favor of AUTHORS file. Updating version number.
  • Fixes #33. Deprecating the requirement of a reference node.
  • Added methods to bring it in line with the embedded driver.
  • Added .single to Iterable and .items() to Node to bring it into alignment with the embedded driver.
  • Adding non-functional realtionshos creation inside transactions.
  • New returnable type “RAW”, added in constants. Very useful for Gremlin and Cypher queries.
  • Extensions can now return raw results. Fixes #52.
  • Added a test for issue #52, returns=RAW.
  • Adding relationships support to transactions.
  • Fixes #49. Usage in extensions.
  • Improving transaction support. Related #49.
  • Fixing some PEP08 warnings.
  • Fixes #43. Unable to reproduce the error.
  • Fixes #49. Improving the batch efficiency in get requests.
  • Fixes #47. Improving Paths management in traversals.
  • Adding ‘content-location’ as possible header in responses instead of just ‘location’.
  • Fixing an error wwhen the value of a set property operation is None.
  • Merge branch ‘master’ of github.com:versae/neo4j-rest-client into devel.
  • Fix for paginated traversals under Neo4j 1.5.
  • Added check for ‘content-location’ header in PaginatedTraversal, ensuring traversals don’t stop early with Neo4j 1.5.

1.5.0 (2011-10-31)

  • Removing the smart_quote function from indexing. It’s not needed anymore with the new way to add elements to indices.
  • Fixes #37.
  • Using JSON object to set index key and value.

1.4.5 (2011-09-15)

  • Adding more testing to returns parameter in the extensions.
  • Fixes 32. It needs some more testing, maybe.
  • Updated to using lucene-querybuilder 0.1.5 (bugfixes and better wildcard support).
  • Fixed the test issue found in #34, and updated the REST client to using lucene-querybuilder 0.1.5.
  • Fixes #34. Fixing dependency of lucene-querybuilder version
  • Fixes #30. Fixing an issue deleting all index entries for a node.
  • Fixing an issue with parameters in extensions.
  • Ensure that self.result is always present on the object, even if it’s None.
  • Fixing naming glitch in exception message
  • Ensure that self.result is always present on the object, even if it’s None
  • Fixing an error retrieving relationships in paths.
  • Fixing an error in extensions, Path and Position.

1.4.4 (2011-08-17)

  • Merge pull request #28 from mhluongo/master
  • Made the DeprecationWarnings a bit more specific.
  • Nodes can now be used in set and as dict keys, differentiated by id.
  • Added a test for node hashing on id.
  • Removed the ‘Undirected’ reference from tests to avoid a DepreactionWarning.
  • Moved the relationship creation DeprecationWarning so creating a relationship the preferred way won’t raise it.
  • Got rid of the DeprecationWarning on import- moved in to whenever using Undirected.*.
  • Fixed traversal return filters.
  • Enabled return filters, including those with custom javascript bodies. Eventually a more elegant (Python instead of string based) solution for return filter bodies is in order.
  • Fixed a mispelling in the test_traversal_return_filter case.
  • Added a test for builtin and custom traversal return filters.
  • Small bug fix for traversal
  • Fixed bug in traverse method for POSITION and PATH return types.

1.4.3 (2011-07-28)

  • Added some deprecation warnings.
  • Added support for pickling ans some tests.
  • Fixed an error deleting nodes and relationships on transactions.
  • Finishied and refactored the full unicode support.

1.4.2 (2011-07-18)

  • Updated the documentation and version.
  • Added support for indices deletion.
  • Improved Unicode support in properties keys and values and relationships types. Adding some tests.

1.4.1 (2011-07-12)

  • Fixed an error retrieving relationships by id.
  • Added control to handle exceptions raised by Request objects.
  • Updated changes, manifest and readme files.

1.4.0 (2011-07-11)

  • Updated version number for the new release.
  • Updated documentation.
  • Updated develpment requirements.
  • Added support for paginated traversals.
  • Passed pyflakes and PEP8 on tests.
  • Added weight to Path class.
  • Index values now quoted_plus.
  • Changed quote to quote_plus for index values.
  • Added two tests for unicode and url chars in index values.
  • Added initial documentacion for transactions.
  • Added the transaction support and several tests.
  • Fixed the implementation of __contains__ in Iterable class for evaluation of ‘in’ and ‘not in’ expressions.
  • Added documentation for Iterable objects.
  • Added more transactions features.
  • Added requirements file for virtual environments in development.
  • Improved number of queries slicing the returned objects in a Iterable wrapper class.
  • Added Q syntax for more complicated queries.
  • Added support for the Q query syntax for indexes using the DSL at http://github.com/scholrly/lucene-querybuilder
  • Fixed an error in the test_query_index case (forgot to include an ‘or’. between queries).
  • Added lucene-querybuilder to the test requirements in setup.py.
  • Added a test case for Q-based queries.

1.3.4 (2011-06-22)

  • Fixed the setup.py and httplib2 import error during installing.
  • Reordered the options variables in an options.py file. Allows index.query() to be called with or without a key
  • Fixed issue #15 regarding dependency to httplib2
  • Patched index.query() so it can take a query without a key (to support, say, mutli-field Lucene queries). Ultimately, query so probably be refactored to Index (instead of IndexKey) because IndexKey doesn’t actually help with full-text queries.
  • Fixed for issue #19 (missed that urllib.quote).
  • Altered the test_query_index case to reflect how I think indexing should work.
  • Using assertTrue instead of failUnless in tests.py, failUnless is deprecated in 2.7 and up, so I figured we might as well switch.
  • Added SMART_ERRORS (aka “Django mode”). If you set SMART_ERROR to True it will make the client throw KeyError instead of NotFoundError when a key is missing.

1.3.3 (2011-06-14)

  • Fixed an introspection when the results list of a traverse is empty.
  • Merge pull request #17 from mhluongo/master
  • Resolved the STOP_AT_END_OF_GRAPH traversal test case. Calling .traverse(stop=STOP_AT_END_OF_GRAPH) will now traverse the graph without a max depth (and without 500 errors).
  • Added a failing test case for traverse(stop=STOP_AT_END_OF_GRAPH).

1.3.2 (2011-05-30)

  • Added a test for deleting relationships.
  • Fixing an Index compatibility issue with Python 2.6.1.
  • Fixing an error in extensions support with named params.

1.3.1 (2011-04-16)

  • Fixing setup.py.

1.3.0 (2011-04-15)

  • First Python Index Package release with full support for Neo4j 1.3.

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