Persistent JavaScript Objects and a fine-grained Document Database, using a Global Storage database

Rob Tweed rtweed@mgateway.com
7 March 2016, M/Gateway Developments Ltd http://www.mgateway.com

Twitter: @rtweed

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The ewd-document-store module abstracts Global Storage databases as persistent JSON and/or on-disk JavaScript Objects. It is built upon the lower-level Global Storage access APIs provided by a number of other modules:

• for YottaDB:
  • mg-dbx
  • NodeM
• For InterSystems Cache and IRIS:
  • mg-dbx
  • the cache.node and iris.node modules that are provided by InterSystems

ewd-document-store is the basis of QEWD-JSdb, and provides APIs for a range of database models, including:

• persistent JSON / on-disk JavaScript Objects
• Redis-like Lists
• Redis-like Key/Object store
• Relational Database with SQL
• Persistent XML/HTML DOM with XPath

For more information, see the QEWD-JSdb documentation.

npm install ewd-document-store

Most users of ewd-document-store will do so through the QEWD framework where it is a tightly-integrated piece of QEWD's core functionality.

It can also be used independently. If you do so, you will also need to ensure that you are using one of the lower-level Global Storage access modules described above.

It is recommended that you consult the QEWD-JSdb documentation for more information.

• You must have InterSystem Caché installed
• You must have cache.node in npm global registy. Read Installation to get more details
• Run npm link cache.node before running integration tests
• You may need to run this as sudo because of permissions

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