Mobile Services批量提交数据

Mobile Services批量提交数据，参考了文章：Inserting multiple items at once in Azure Mobile Services。里面其实已经介绍得比较清楚了，但由于是英文，而且有些地方交待得不清楚，也没有Android的示例，故下文以Android版本的开发为例作个补充。

首先在Mobile Services项目里新建AllToDoItems以及ToDoItem表，点击AllToDoItems，再点击script标签，将里面的内容替换如下：

function insert(item, user, request) {    var table = tables.getTable('ToDoItem');    populateTable(table, request, item.todos);}function populateTable(table, request, films) {    var index = 0;    films.forEach(changeReleaseDate);    var insertNext = function () {        if (index >= films.length) {            request.respond(201, { id: 1, status: 'Table populated successfully' });        } else {            var toInsert = films[index];            table.insert(toInsert, {                success: function () {                    index++;                    if ((index % 20) === 0) {                        console.log('Inserted %d items', index);                    }                     insertNext();                }            });        }    };     insertNext();} function changeReleaseDate(obj) {    var releaseDate = obj.ReleaseDate;    if (typeof releaseDate === 'string') {        releaseDate = new Date(releaseDate);        obj.ReleaseDate = releaseDate;    }}

服务端的工作到此完成。

客户端新建两个类，分别如下：

package com.example.ecodriveiot;/** * Represents an item in a ToDo list */public class ToDoItem {/** * Item text */@com.google.gson.annotations.SerializedName("text")private String mText;/** * Item Id */@com.google.gson.annotations.SerializedName("id")private String mId;/** * Indicates if the item is completed */@com.google.gson.annotations.SerializedName("complete")private boolean mComplete;/** * ToDoItem constructor */public ToDoItem() {}@Overridepublic String toString() {return getText();}/** * Initializes a new ToDoItem *  * @param text *            The item text * @param id *            The item id */public ToDoItem(String text, String id) {this.setText(text);this.setId(id);}/** * Returns the item text */public String getText() {return mText;}/** * Sets the item text *  * @param text *            text to set */public final void setText(String text) {mText = text;}/** * Returns the item id */public String getId() {return mId;}/** * Sets the item id *  * @param id *            id to set */public final void setId(String id) {mId = id;}/** * Indicates if the item is marked as completed */public boolean isComplete() {return mComplete;}/** * Marks the item as completed or incompleted */public void setComplete(boolean complete) {mComplete = complete;}@Overridepublic boolean equals(Object o) {return o instanceof ToDoItem && ((ToDoItem) o).mId == mId;}}

package com.example.ecodriveiot;public class AllToDoItems {@com.google.gson.annotations.SerializedName("id")public String id;public String status;public ToDoItem[] todos;}

批量提交的代码如下：

ToDoItem item = new ToDoItem();item.setText("test");item.setComplete(false);ToDoItem[] items = new ToDoItem[2];items[0]=item;items[1]=item;// Insert the new item/*mToDoTable.insert(item, new TableOperationCallback<ToDoItem>() {public void onCompleted(ToDoItem entity, Exception exception, ServiceFilterResponse response) {if (exception == null) {if (!entity.isComplete()) {mAdapter.add(entity);}} else {createAndShowDialog(exception, "Error");}}});*/AllToDoItems allToDoItems = new AllToDoItems();allToDoItems.todos=items;mClient.getTable(AllToDoItems.class).insert(allToDoItems, new TableOperationCallback<AllToDoItems>() {public void onCompleted(AllToDoItems entity, Exception exception, ServiceFilterResponse response) {if (exception == null) {Log.i("Debug", "status:"+entity.status);} else {createAndShowDialog(exception, "Error");}}});

上面的代码其实是在sdk demo的基础上改的，mClient的初始化自己加上即可。其他客户端的开发其实是类似的，可以查看英文原文。当然，里面的ToDoItem[] todos可以改成ArrayList<ToDoItem> todos。