Data Schema

A "data programming bean" defines the storage and caching and application I/O for a record in a relational database table. It communicates with the Datastore and Memcache, and implements HTTP and XMPP applications with GAE.

The Gap Data compiler generates java programming language source code for Google App Engine data beans. The Gap Data Bean is defined in ODL.

Person

This application redefines Person from gap-data.

 package oso.data;
 path /people;
 import cpi.Inventory;
 import cpi.groups.Project;

 /**
  * Accept Accounts or OAuth Logon Id for viewer identity
  * 
  * Application access by random identifier
  * 
  * Logon Id is optional with Project
  * 
  * Identifier is required
  */
 class Person
     version 8
 {
     String logonId;
     *unique String identifier;
     List.Primitive<Inventory> inventory;
     Float nf;
     Float nt;
     Float st;
     Float sf;
     Date created;
     Date completed;
     Project project;
 }

Person is used by Gap Data for any logged- in user

A Person with a Project may not have a logonId

See also API Result

Group

A Group has many Projects

package cpi.groups;
path /groups;
import oso.data.Person;

import cpi.Margins;
import cpi.Redirect;
import cpi.ProfileLabels;

/**
 * A {@link Group} has many {@link Project Projects}
 */
class Group
    version 1
{
    *unique String identifier;
    /*
     * Required label
     */
    String name;
    /*
     * Billing admin
     */
    Person owner;
    /*
     * Project admin
     */
    Person admin;
    /*
     * Group created
     */
    Date created;
    /*
     * Usage billed
     */
    Date billed;
    /*
     * Bill paid
     */
    Date paid;
    /*
     * If not Project, use Group
     */
    Redirect redirect;
    /*
     * If not Project, use Group
     */
    Margins margins;
    /*
     * While group is in test, accounts and notes are not created.
     * Null value is equivalent to false value, not in test.
     */
    Boolean test;
    /*
     * Specialized labels for profile image quadrants
     */
    ProfileLabels labels;
}

See also API Group

Project

A Group has many Projects

package cpi.groups;
path /projects;
import oso.data.Person;
import cpi.Redirect;
import cpi.Margins;

/**
 * A {@link Group} has many {@link Project Projects}
 * 
 * @note Could add (Person admin) for delegation
 */
parent Project
    version 1
    child Member
{
    *unique String identifier;
    /*
     * Optional label
     */
    String name;
    /*
     * Parent group
     */
    Group group;
    /* 
     * Project created
     */
    Date created;
    /* 
     * Membership destroyed
     */
    Date cleaned;
    /*
     * Quota on query Person.project = Project.identifier
     */
    Integer count;
    /*
     * If not Project, use Group
     */
    Redirect redirect;
    /*
     * If not Project, use Group
     */
    Margins margins;
    /*
     * List of person identifiers
     */
    List.Short<Member> members;
}

See also API Project