Storage

The encore.storage package provides an abstract API for key-value stores, as well as some reference implementations, utilities, and building-blocks for creating more complex stores from simple ones.

The API is both agnostic to the type of data being stored and the underlying data storage medium. Being agnostic to the type of data permits the API to be used in appropriate situations other than the ones that we currently envision for current Enthought projects, while being agnostic to the underlying storage mechanism permits the same code to be used no matter how the data is stored - whether in memory, a filesystem, a web service, or a SQL or NoSQL database - permitting greater flexibility in deployment depending on user needs.

All abstractions are leaky, so we don’t anticipate that this API will cover all possible functionality that a data store could provide, but the hope is that the API provides a common language for the most fundamental operations, and a baseline which can be extended as we find more commonalities in the data stores that we develop.

Contents

• Key-Value Store Concepts
  • Discussion
  • Keys
  • Values
  • Data
  • Metadata
  • Connecting and Disconnecting
  • Querying
  • Transactions
  • Events
  • Notes For Writing An Implementation
• Usage
  • Creating and Connecting
  • Reading
  • Querying
  • Writing
  • Transactions
  • The “Multi” Methods
  • Events
• Key-Value Store API
• Events
  • Event Inheritance Diagram
• Utils
  • File-like Interface Utilities
  • Transaction Support
  • Event Support

Implementations

• Memory Store
• Sqlite Store
• File System Store
• Static URL Store
• Dynamic URL Store
• Joined Store
• MountedStore
• Simple Authenticating Store

Indices and tables

• Index

• Module Index

• Search Page

License

This software is OSI Certified Open Source Software. OSI Certified is a certification mark of the Open Source Initiative.

Unless otherwise noted:

Copyright (c) 2011-2022, Enthought, Inc. All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

• Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.

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• Neither the name of Enthought, Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS “AS IS” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

util.human_date module

Copyright 2009 Jai Vikram Singh Verma (jaivikram[dot]verma[at]gmail[dot]com) Licensed under the Apache License, Version 2.0 (the “License”); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an “AS IS” BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

concurrent.futures.enhanced_thread_pool_executor

Copyright 2009 Brian Quinlan. All Rights Reserved. Licensed to PSF under a Contributor Agreement.