如果在 JS 中初始化，iOS JSON Store 打开失败

Question

在 JavaScript 中初始化 JSON 存储:

function doJSTestInit() {

var peopleCollectionName = 'people';
var collections = {

    // Object that defines the 'people' collection.
    people : {

        // Object that defines the Search Fields for the 'people'
        // collection.
        searchFields : {
            mid1 : 'integer', //模块/模块组主键ID
            level : 'integer', //组件层级
            moduleId : 'string', //模块/模块组业务ID
            appId : 'integer', //应用ID
            moduleType : 'string', //功能模块F，登陆模块
//              status : 'string', //模块状态  上架: U 下架: D 暂停:P
//              moduleName : 'string', //模块/模块组名称
//              iconUrl : 'string', //图标URL
//              updateStatus : 'string', //强制更新，提示更新
//              downloadStatus : 'string', //必选下载，可选下载
//              engineType : 'string', //模块类别 EMP WL
//              pauseReason : 'string', //暂停原因
//              moduleUrl : 'string', //模块存放路径UR
//              md5 : 'string', //模块资源包MD5码
//              needLogin : 'string', //是否需要登录才能使用模块功能,是 : Y, 否 : N

        }
    },
};

WL.JSONStore.destroy()

.then(function() {

    // Open the collection
    return WL.JSONStore.init(collections);
}).then(function() {

    // Data to add, you probably want to get
    // this data from a network call (e.g. Worklight Adapter).
    var data = [ {
        name : 'carlos',
        age : 10
    } ];

    // Optional options for add.
    var addOptions = {

        // Mark data as dirty (true = yes, false = no), default true.
        markDirty : true
    };

    // Get an accessor to the people collection and add data.
    return WL.JSONStore.get(peopleCollectionName).add(data, addOptions);
});
}

然后尝试在 iOS Native Code 中打开这个 JSON Store:

-(void)onActionReceived:(NSString *)action withData:(NSDictionary *)data{
NSLog(@"LoginScreenViewController :: onActonReceived :: %@", action);
if ([action isEqualToString:@"testJSONInit"]){

    NSError* error = nil;
//        [[JSONStore sharedInstance]destroyDataAndReturnError:&error];
    people = [[JSONStoreCollection alloc]initWithName:@"people"];
    [people setSearchField:@"mid1" withType:JSONStore_Integer]; //模块/模块组主键ID
    [people setSearchField:@"level" withType:JSONStore_Integer]; //组件层级
    [people setSearchField:@"moduleId" withType:JSONStore_String]; //模块/模块组业务ID
    [people setSearchField:@"appId" withType:JSONStore_Integer]; //应用ID
    [people setSearchField:@"moduleType" withType:JSONStore_String]; //功能模块F，登陆模块
//        [people setSearchField:@"status" withType:JSONStore_String]; //模块状态  上架: U 下架: D 暂停:P
//        [people setSearchField:@"moduleName" withType:JSONStore_String]; //模块/模块组名称
//        [people setSearchField:@"iconUrl" withType:JSONStore_String]; //图标URL
//        [people setSearchField:@"updateStatus" withType:JSONStore_String]; //强制更新，提示更新
//        [people setSearchField:@"downloadStatus" withType:JSONStore_String]; //必选下载，可选下载
//        [people setSearchField:@"engineType" withType:JSONStore_String]; //模块类别 EMP WL
//        [people setSearchField:@"pauseReason" withType:JSONStore_String]; //暂停原因
//        [people setSearchField:@"moduleUrl" withType:JSONStore_String]; //模块存放路径UR
//        [people setSearchField:@"md5" withType:JSONStore_String]; //模块资源包MD5码
//        [people setSearchField:@"needLogin" withType:JSONStore_String]; //是否需要登录才能使用模块功能,是 : Y, 否 : N

    //Open the collections.
    [[JSONStore sharedInstance] openCollections:@[people] withOptions:nil error:nil];

}else if ([action isEqualToString:@"testJSON"]){
    int dataAddedToThePeopleCollection = [[people addData:@[@{@"moduleId" : @"carlos", @"level" : @20}] andMarkDirty:YES withOptions:nil error:nil] intValue];

}
}

错误将在下面被捕获:

2014-10-20 20:37:57.517 JStoreTest[64745:879970] [ERROR] [JSONSTORE] -[JSONStore _provisionCollection:withSearchFields:withAdditionalSearchFields:withUsername:withPassword:withDropFirst:error:] in JSONStore.m:724 :: Error: JSON_STORE_EXCEPTION, code: -2, username: jsonstore, accessor username: jsonstore, collection name: people, searchFields: { appId = integer; level = integer; mid1 = integer; moduleId = string; moduleType = string; }, additionalSearchFields: { }

code: -2 means , PROVISION_TABLE_SEARCH_FIELDS_MISMATCH

但字段完全匹配。如果我只使用 3 个字段，它会完美地工作，如果超过 3 个字段，则会出现上述错误。为什么？这是一个错误吗？谢谢。

Answer 1

这行得通，谢谢 Daniel。

这并没有直接解决你的问题，但我想补充一点，在你用 Javascript 初始化后，你不必在 native 中再次调用 openCollection()；你可以直接调用 [[JSONStore sharedInstance] getCollectionWithName:@"people"];它将返回已经由 Javascript 初始化的集合。 – Daniel A. González