ODataAngularResources is a fork of Angular's $resource that allows to make OData queries in a fluent way. It does everything Angular Resources does but add some features:
- Fluent API
- Generate proper OData queries without worrying about escaping the right characters
- Allows filtering, skipping, ordering, expanding, and selecting only N elements (with top)
- Able to generate complex queries with OR, AND and method calls
##How to install
- Download the repository or install the bower package :
bower install angular-odata-resources- Include the file build/odataresources.js into your project
- Be sure to register the module "ODataResources" in your module definition :
var myModule = angular.module('myModule',['ODataResources']);- Then replace your dependency to "$resource" by "$odataresource"
myModule.controller('MyController', ['$scope','$odataresource',function($scope,$odataresource){}]);##How to use
###Simple query
- Call the odata() method on your resource.
var User = $odataresource('/user/:userId', {userId:'@id'});
var myUsers = User.odata()
.filter("Name","John")
.query();
//Queries /user?$filter=Name eq 'John'-
The first parameter of the filter method is assumed to be the property and the second to be the value. But that behavior can be overriden by passing special parameters. See advanced queries for more informations.
-
Returned objects from the query() method are regular Resource object which can be used for saving, updating etc...
myUsers[0].$save();- Like regular Resource requests you can pass callback that will be called on success and on error
var myUsers = User.odata()
.query(function(){
console.log("Everything went ok!")
},function(){
console.log("Oops, something wrong happened!")
}); - Simply call the get method with the entity key
var userId = 10;
var myUsers = User.odata().get(userId);
//Queries /user(10)- You can also provide callbacks
var userId = 10;
var myUsers = User.odata().get(userId,
function(){
console.log("Everything went ok!")
},function(){
console.log("Oops, something wrong happened!")
});If you want to retrieve a single element after a query you can use the single() method which will take the first elements of the response. This method will throw if the reponse returns an empty array.
var User = $odataresource('/user/:userId', {userId:'@id'});
var myUser = User.odata()
.filter("Name","John")
.single();
//Queries /user?$filter=Name eq 'John' and put the first element into myUser###Query with top, orderBy and skip
var User = $odataresource('/user/:userId', {userId:'@id'});
var myUsers = User.odata()
.filter("Name", "John")
.filter("Age",">",20)
.skip(10)
.take(20)
.orderBy("Name","desc")
.query();
//Queries /user?$filter=(Name eq 'John') and (Age gt 20)&$orderby=Name desc&$top=20&$skip=10- Multiple chained filters are executed with and between.
- orderBy assumes the order to be asc if the second parameter is not specified.
- It's possible to query the number of elements
var data = User.odata().filter('name','bob').count();
//Queries /user/$count/?$filter=name eq 'bob'
// data.result == 25- You can also ask for an inline count to have the count aside with the data
var users = User.odata().withInlineCount().query();
//Queries /user?$inlinecount=allpages
// users is an array but also contains the count property
// The server may reply by
// {
// "@odata.context": "http://host/service/$metadata#Collection(Edm.String)",
// "value": [{
// name: 'Test',
// id: 1,
// }, {
// name: 'Foo',
// id: 2,
// }],
// 'count': 10
// }
// And then, the count will be defined as followed
// users.count == 10###Including related models (expanding)
- You can easily include related models by calling the expand method
var User = $odataresource('/user/:userId', {userId:'@id'});
var myUsers = User.odata()
.expand("City")
.query();
//Queries /user?$expand=City- You can also expand nested related models like the Country of the City of the User
var User = $odataresource('/user/:userId', {userId:'@id'});
var myUsers = User.odata()
.expand("City","Country")
.query();
//Queries /user?$expand=City/Country- You can also include multiple related models into your query
var User = $odataresource('/user/:userId', {userId:'@id'});
var myUsers = User.odata()
.expand("City")
.expand("Orders")
.query();
//Queries /user?$expand=City,Orders###Pick a subset of the properties (Selecting)
- You can use the select method to retrieve only some properties of the entities.
var User = $odataresource('/user/:userId', {
userId: '@id'
});
var users = User.odata().select(['name','userId']).query();
//OR
var users = User.odata().select('name','userId').query();
//Queries /user?$select=userId,name###Specifying a custom url and method
- Want a custom url for your odata queries? easy! It works just like angular resources:
User = $odataresource('/user/:userId',
{ userId: '@id'},
{
odata: {
method: 'POST',
url: '/myCustomUrl'
}
}
);##Advanced queries
###Predicates
- If you need to write or statements in your queries, you need to use the Predicate class. First, be sure to reference the $odata dependency.
myModule.controller('MyController', ['$scope','$odataresource','$odata',function($scope,$odataresource,$odata){}]);- Now you can use the $odata.Predicate class wich allow advanced filtering.
var predicate1 = new $odata.Predicate("FirstName", "John");
var predicate2 = new $odata.Predicate("LastName", '!=', "Doe");
//
combination = $odata.Predicate.or([predicate1,predicate2]);
User.odata().filter(combination).query();
//Queries /user?$filter=(FirstName eq 'John') or (LastName ne 'Doe');- You can even combine predicates with predicates
var predicate1 = new $odata.Predicate("FirstName", "John");
var predicate2 = new $odata.Predicate("LastName", '!=', "Doe");
var predicate3 = new $odata.Predicate("Age", '>', 10);
//
combination1 = $odata.Predicate.or([predicate1,predicate2]);
combination2 = $odata.Predicate.and([combination1,predicate2]);
User.odata().filter(combination).query();
//Queries /user?$filter=((FirstName eq 'John') or (LastName ne 'Doe')) and Age gt 10- You can also achieve the same results with the fluent api
var predicate = new $odata.Predicate("FirstName", "John")
.or(new $odata.Predicate("LastName", '!=', "Doe"))
.and(new $odata.Predicate("Age", '>', 10));
//
User.odata().filter(predicate).query();
//Queries /user?$filter=((FirstName eq 'John') or (LastName ne 'Doe')) and Age gt 10It is sometime necessary to compare two properties or two values in a query. To do so, you can use the $odata.Value or $odata.Property classes
var predicate = new $odata.Predicate(
new $odata.Value('Foo'),
new $odata.Value('Bar')
);
//
User.odata().filter(predicate).query();
//Queries /user?$filter='Foo' eq 'Bar'Or with two properties :
User.odata().filter(
new $odata.Property('Name'),
new $odata.Property('Surname')
).query();
//Queries /user?$filter=Name eq SurnameThis library is clever enough to figure out the types from the data passed and format them accordingly. But sometimes you may need to have a specific output type. In this case you can pass a second argument to the $odata.Value() constructor :
User.odata().filter(
'Latitude',
new $odata.Value(40.765150,"Decimal")
).query();
//Queries /user?$filter=Latitude eq 40.765150M
User.odata().filter(
'Latitude',
new $odata.Value("75.42","Int32")
).query();
//Queries /user?$filter=Latitude eq 75
User.odata().filter(
'Latitude',
new $odata.Value("true","Boolean")
).query();
//Queries /user?$filter=Latitude eq true
User.odata().filter(
'Latitude',
new $odata.Value(10,"Boolean")
).query();
//Queries /user?$filter=Latitude eq trueHere is the complete list of supported types :
| Type Name | Output example |
|---|---|
| Boolean | true |
| Byte | FE |
| DateTime | datetime'2000-12-12T12:00' |
| Decimal | 2.345M |
| Double | 2.0d |
| Single | 2.0f |
| Guid | guid'12345678-aaaa-bbbb-cccc-ddddeeeeffff' |
| Int32 | 51358 |
| String | 'Hello OData' |
###Function calls
- You can call functions like endswith or length on an OData query. To do so, use the $odata.Func class.
var users = User.odata()
.filter(new $odata.Func("endswith","FullName","Doe"), true)
.query();
//Queries /user?$filter=endswith(FullName, 'Doe') eq true####Definition
new $odata.Func(MethodName, PropertyName, Value1, Value2,...)
The parameters are assumed to be first, a property and then a value. This behavior can be overriden by specifying explicit values or properties :
new $odata.Func('substringof',
new $odata.Value('Alfreds'),
new $odata.Property('CompanyName')
);####List of available functions
| Function | Example | Example value |
|---|---|---|
| String Functions | ||
| bool substringof(string po, string p1) | new $odata.Func('substringof',new $odata.Value('Alfreds'), new $odata.Property(CompanyName)) | true |
| bool endswith(string p0, string p1) | new $odata.Func('endswith','CompanyName', 'Futterkiste') | true |
| bool startswith(string p0, string p1) | new $odata.Func('startswith','CompanyName', 'Alfr') | true |
| int length(string p0) | new $odata.Func('length','CompanyName') | 19 |
| int indexof(string p0, string p1) | new $odata.Func('indexof','CompanyName', 'lfreds') | 1 |
| string replace(string p0, string find, string replace) | new $odata.Func('replace','CompanyName', ' ', '') | AlfredsFutterkiste |
| string substring(string p0, int pos) | new $odata.Func('substring','CompanyName', 1) | lfreds Futterkiste |
| string substring(string p0, int pos, int length) | new $odata.Func('substring','CompanyName', 1, 2) | lf |
| string tolower(string p0) | new $odata.Func('tolower','CompanyName') | alfreds futterkiste |
| string toupper(string p0) | new $odata.Func('toupper','CompanyName') | ALFREDS FUTTERKISTE |
| string trim(string p0) | new $odata.Func('trim','CompanyName') | Alfreds Futterkiste |
| string concat(string p0, string p1) | new $odata.Func('concat','City', new $odata.Property('Country')) | Berlin Germany |
| Date Functions | ||
| int day(DateTime p0) | new $odata.Func('day','BirthDate') | 8 |
| int hour(DateTime p0) | new $odata.Func('hour','BirthDate') | 0 |
| int minute(DateTime p0) | new $odata.Func('minute','BirthDate') | 0 |
| int month(DateTime p0) | new $odata.Func('month','BirthDate') | 12 |
| int second(DateTime p0) | new $odata.Func('second','BirthDate') | 0 |
| int year(DateTime p0) | new $odata.Func('year','BirthDate') | 1948 |
| Math Functions | ||
| double round(double p0) | new $odata.Func('round','Freight') | 32d |
| decimal round(decimal p0) | new $odata.Func('round','Freight') | 32 |
| double floor(double p0) | new $odata.Func('round','Freight') | 32d |
| decimal floor(decimal p0) | new $odata.Func('floor','Freight') | 32 |
| double ceiling(double p0) | new $odata.Func('ceiling','Freight') | 33d |
| decimal ceiling(decimal p0) | new $odata.Func('floor','Freight') | 33 |
| Type Functions | ||
| bool IsOf(expression p0, type p1) | new $odata.Func('isof','ShipCountry', 'Edm.String') | true |
| Lambda Functions | ||
| bool any(string p0, expression p1) | new $odata.Func('any','Categories', $odata.Predicate("firstName", "Bobby")) | true |
| bool all(string p0, expression p1) | new $odata.Func('any','Categories', $odata.Predicate("firstName", "Bobby")) | true |
This project supports basic odata v4 queries and responses. If the server responds with an array wrapped inside an object :
{
"@odata.context":"http://local.testsite.com/odata/$metadata#TestData",
"value":[
{
"TestId":1,"name":"test 1"
},{
"TestId":2,"name":"test 2"
}
],
"totalCount":10
}The api will still return the array provided in the value property and everything else will be set as properties of the array.
var User = $odataresource('/user/:userId', {userId:'@id'});
var myUsers = User.odata()
.filter("Name","John")
.query();
//... later
console.log(myUsers[0].name);
console.log(myUsers.totalCount);You can use the $update method on an object. But for that you need to specify what is the property that contains the key.
There is two way of doing so :
- Provide the key property as a second argument.
User = $odataresource('/user', 'id');
var myUsers = User.odata.query();
//... later
myUsers[0].$update();
//Will issue a PUT /user(1)- Or provide it as a property of the 4th argument.
User = $odataresource('/user', {},{},{odatakey : 'id'});
var myUser = new User();
myUser.$save();
//Will issue a POST /user
myUser.$update();
//Will issue a PUT /user(1)
myUser.$delete();
//Will issue a DELETE /user(1)- You can provide a comma seperated list of id's for complex key tables.
User = $odataresoure('/userroles', {},{},{odatakey: 'id,roleid'});
var myUser = new User();
myUser.$update();
//will issue a POST /user(id=1,roleid=2)With odatav4 expanding nested entities is done with a different query
/user?$expand=Order/Items
becomes
/user?$expand=Order($expand=Items)
To enable this behavior set the isodatav4 property to true when invoking the $odataresource method:
User = $odataresource('/user', {}, {}, {
odatakey: 'id',
isodatav4: true
});
var result = User.odata().expand("roles", "role").query();
// /user?$expand=roles($expand=role)You can use the expand predicate for complex expand scenarios (such as parsing your metadata and applying a default schema to a query):
var result = User.odata().expandPredicate("roles").select("name").finish().query();
// /user?$expand=roles($select=name)ExpandPredicate returns the Expand context and finish returns the base OdataProvider context, so make sure to finish the expandPredicate.
You can nest expands as well:
// grab odata context
var query = User.odata();
// add expand roles table and select roles.name
query.expandPredicate("roles").select("name").finish();
// add and save the context for the provider table and select provider.name, also expand provider -> settings (automatically calls finish())
var providertype = query.expandPredicate("provider").select("name").expand("settings");
// add provider type table and finish out both the provider type and provider expandPredicate contexts
providertype.expandPredicate("providertype").finish().finish();
// run the query
query.query();
// or inline
var query = User.odata().expandPredicate("roles").select("name").finish().expandPredicate("provider").select("name").expand("settings")
.expandPredicate("providertype").finish().finish().query();
// /user?$expand=roles($select=name),provider($select=name;expand=settings,providertype)- With OData v4 inlinecount issues a $count=true parameter
var users = User.odata().withInlineCount().query();
//Queries /user?$count=true
// users is an array but also contains the count property
// The server may reply by
// {
// "@odata.context": "http://host/service/$metadata#Collection(Edm.String)",
// "@odata.count":10,
// "value": [{
// name: 'Test',
// id: 1,
// }, {
// name: 'Foo',
// id: 2,
// }]
// }
// And then, the count will be defined as followed
// users.count == 10- It is possible to transform the query that will be made to the server by calling the method transformUrl
User.odata()
.filter("Name", "Raphael")
.transformUrl(function(url){
return url+'&foo=bar';
})
.query();
// queries /user?$filter=Name eq 'Raphael'&foo=bar Support has been added to keep track of queries used to retrieve entities. You can call the $refresh method on a returned array of resources, or an individual resource object itself to get an updated entity from the API. The odata query applied to the refresh GET will depend on how the object you're calling the $refresh method on was retrieved. There are two types of persisted queries, full and limited. Full will store the entire list of odata arguments you supplied to reproduce the same result set. Limited will limit the query to selects, expands, and format. Limited assumes you're getting a single entity from a larger query, and want to keep the response equal to the initial object, ie same selects, expands, but dont need the filter/take/skip/etc odata arguments.
Persistence
To apply persisted query arguments to the provider manually call the 're' method.
var newUser = userResource.$odata().re().query();Or you can enable this behavior by default.
var User = $odataresource("/user", {}, {}, { isodatav4: true, odatakey: "id", persistence: true } );
var user = User.odata().select("name").query();
var newUser = user.$odata().query();$refresh
Persistence is applied automatically with or without the persistence options flag when using $refresh.
Use the following table to determine the query that will be appllied to the refresh:
| Initial OdataProvider Call | Target | Persistence |
|---|---|---|
| var array = resource.odata().query(); | var array = array.$refresh(); | full |
| var array = resource.odata().query(); | var entity = array[0].$refresh(); | limited |
| var entity = resource.odata().get(1); | var entity = entity.$refresh(); | limited |
| var entity = resource.odata().single(); | var entity = entity.$refresh(); | full |
| var count = resource.odata().count(); | var count = count.$refresh(); | full |
- You need Grunt installed globally:
> npm install -g grunt- Then run
> npm install
> grunt build- Simply run
> grunt testWant to contribute? Great! Be sure to write tests before submitting your pull request.
React
Typescript
Django
Laravel
Facebook
Microsoft
Google
Alibaba
D3
Tencent