Question

我有多个读取查询。

Query query = QueryOperations
                    .field("deleted").eq(false)
                    .select("title", "price", "district","anouncement_id")
                    .orderBy("announce_from", QueryOrder.Descending)
                    .skip(countIsLoaded) // counter
                    .top(5);

另一个是或ecc ..

Query query = QueryOperations
                .field("deleted").eq(false)
                .orderBy("created", QueryOrder.Descending)
                .skip(countIsLoaded) // counter
                .top(5);

我将不得不使用Andriod异步任务进行查询。现在我有多个asyntask因为我没有找到传递Azure Mobile Service查询的方法。这是我目前的代码

try {
    MobileServiceTable<Foo> mToDoTable = MakeEasyApplication.mClient.getTable(Foo.class);

    MobileServiceList<Foo> listAnnounce = mToDoTable.where()
                 .field("deleted").eq(false)
                 .select("title", "price", "announce_from", "district","anouncement_id")
                 .orderBy("announce_from", QueryOrder.Descending)
                 .skip(countIsLoaded)
                 .top(5)
                 .execute().get();
    for (Foo foo: listAnnounce) {
        publishProgress(foo);
    }
} catch (Exception e) {
    e.printStackTrace();
}

我如何传递查询参数而不是多个异步任务？

Answer 1

@JoJo，根据我的经验，我认为有两种方法可以为异步任务包装多个查询。

将具有不同查询名称的多个查询换行到函数中。

public Query getQuery(String qName) {
    Query query = null;
    switch(qName){
        case "QN1":
            query = QueryOperations
                    .field("deleted").eq(false)
                    .select("title", "price", "district","anouncement_id")
                    .orderBy("announce_from", QueryOrder.Descending)
                    .skip(countIsLoaded) // counter
                    .top(5);
            break;
        case "QN2":
            query = QueryOperations
                .field("deleted").eq(false)
                .orderBy("created", QueryOrder.Descending)
                .skip(countIsLoaded) // counter
                .top(5);
            break;
        //......
        default: 
        //......
    }
    return query;
}

//In async task
Query query = getQuery("<qName>");
MobileServiceTable<Foo> mToDoTable = MakeEasyApplication.mClient.getTable(Foo.class);
MobileServiceList<Foo> listAnnounce = mToDoTable.where().execute(query).get();

使用自定义API，您可以在移动backend中定义自定义API并在Android client中调用自定义API，然后使用自定义API的名称作为参数，而不是具有多个异步任务。

Azure移动服务查询参数

1 个答案: