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1d6fb8b Sep 26, 2010
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Documentation for developers

Constructor functions

var Task = persistence.define('Task', {
  name: "TEXT",
  done: "BOOL"
var Category = persistence.define('Category', {
  name: "TEXT"
Task.hasOne('category', Category);

Task is a constructor function that is used to create new instances of the Task entity, but also can be used to retrieve meta data from, using Task.meta. This meta field provides the following information:

  • name, the name of the entity as set as first argument of define
  • fields, the field object passed to the original define, consisting of property names as keys and textual column types as values.
  • hasOne, an object with relation names as keys and relationship objects as values. The relationship object currently has one field: type: which links to the constructor function of the type of the relation. Example: Task.hasOne.category.type will equal the Category constructor.
  • hasMany, an object with relation anmes as keys and relationship objects as values. The relationship has the following fields:
    • type: the constructor function of the relationship entity
    • inverseProperty: the property name of the inverse relation
    • manyToMany: a boolean value indicating if this is a manyToMany relationship or not (then it's a one-tomany)
    • tableName: name of the utility coupling table used for a many-to-many relationship

Extension hooks

  • persistence.entityDecoratorHooks: a list of functions (with the constructor function as argument) to be called to decorate. Useful to add new functionality to constructo functions, such as Task.index.
  • persistence.flushHooks: a list of functions to be called before flushing.
  • persistence.schemaSyncHooks: a list of functions to be called before syncing the schema.
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