Orbit.js 介绍
Orbit.js 是一个标准库用于数据访问和同步。Orbit 依赖于 Promises、Events 和底层转换。
简单示例：
// Create data sources with a common schema
var schema = {
idField: '__id',
models: {
planet: {
}
}
};
var memorySource = new Orbit.MemorySource(schema);
var restSource = new Orbit.JSONAPISource(schema);
var localSource = new Orbit.LocalStorageSource(schema);
// Connect MemorySource -> LocalStorageSource (using the default blocking strategy)
var memToLocalConnector = new Orbit.TransformConnector(memorySource, localSource);
// Connect MemorySource <-> JSONAPISource (using the default blocking strategy)
var memToRestConnector = new Orbit.TransformConnector(memorySource, restSource);
var restToMemConnector = new Orbit.TransformConnector(restSource, memorySource);
// Add a record to the memory source
memorySource.add('planet', {name: 'Jupiter', classification: 'gas giant'}).then(
function(planet) {
console.log('Planet added - ', planet.name, '(id:', planet.id, ')');
}
);
// Log the transforms in all sources
memorySource.on('didTransform', function(operation, inverse) {
console.log('memorySource', operation);
});
localSource.on('didTransform', function(operation, inverse) {
console.log('localSource', operation);
});
restSource.on('didTransform', function(operation, inverse) {
console.log('restSource', operation);
});
// CONSOLE OUTPUT
//
// memorySource {op: 'add', path: 'planet/1', value: {__id: 1, name: 'Jupiter', classification: 'gas giant'}}
// localSource {op: 'add', path: 'planet/1', value: {__id: 1, name: 'Jupiter', classification: 'gas giant'}}
// restSource {op: 'add', path: 'planet/1', value: {__id: 1, id: 12345, name: 'Jupiter', classification: 'gas giant'}}
// memorySource {op: 'add', path: 'planet/1/id', value: 12345}
// localSource {op: 'add', path: 'planet/1/id', value: 12345}
// Planet added - Jupiter (id: 12345)