uuid

Invalid UUID of storage gained from Android StorageManager?

由 筅森魡賤 提交于 2019-12-10 09:08:11
问题 I lost whole day fighting with something trivial, but now I just give up and need your help. In new Oreo API for reading app code/data/cache/ size we need storage UUID (StorageStatsManager.queryStatsForUid(UUID storageUuid, int uid)). The storage UUID is possible to fetch from StorageManager.getStorageVolumes() which returns list of all storages which contains also the UUIDs. And there the problem begins: The UUID from returned list is in String format while StorageStatsManager

AttributeError: 'UUID' object has no attribute 'replace' when using backend-agnostic GUID type

由 人盡茶涼 提交于 2019-12-10 03:14:58
问题 I want to have a primary key id with type uuid in a Postgresql database using SQLAlchemy 1.1.5, connecting to the database with the pg8000 adapter. I used the Backend-agnostic GUID Type recipe from the SQLAlchemy documentation. When I want to insert into the database, I get the following error File ".../guid.py", line ???, in process_result_value return uuid.UUID(value) File "/usr/lib/python2.7/uuid.py", line 131, in __init__ hex = hex.replace('urn:', '').replace('uuid:', '') AttributeError:

Cast or extract timestamptz from v1 uuid in postgresql

由 北城以北 提交于 2019-12-10 02:26:39
问题 I'm trying to extract the timestamp from a V1 uuid, naively wished this worked: select '3efe0a20-f1b3-11e3-bb44-14109fec739e'::uuid::timestamp; Here is a quick example showing how to extract the time in go, but I'm hoping postgresql has something built-in rather than creating a one-off pl/pgSql function. http://play.golang.org/p/XRCooLgfaG 回答1: I've tested this with uuid's from my database and it seems to work very well, even without the unsigned bigints CREATE FUNCTION uuid_timestamp(id uuid

UUID primary key in Eloquent model is stored as uuid but returns as 0

由 帅比萌擦擦* 提交于 2019-12-10 01:52:25
问题 I have a mysql table in which I'm using a UUID as the primary key. Here's the creation migration: Schema::create('people', function (Blueprint $table) { $table->uuid('id'); $table->primary('id'); ... $table->timestamps(); } Which generates the following MySQL schema: CREATE TABLE `people` ( `id` char(36) COLLATE utf8_unicode_ci NOT NULL, ... `created_at` timestamp NULL DEFAULT NULL, `updated_at` timestamp NULL DEFAULT NULL, PRIMARY KEY (`id`) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8

jsp实现大文件上传分片上传断点续传

由 て烟熏妆下的殇ゞ 提交于 2019-12-09 18:40:41
1，项目调研 因为需要研究下断点上传的问题。找了很久终于找到一个比较好的项目。 在GoogleCode上面，代码弄下来超级不方便，还是配置hosts才好，把代码重新上传到了github上面。 https://github.com/freewebsys/java-large-file-uploader-demo 效果： 上传中，显示进度，时间，百分比。 点击【Pause】暂停，点击【Resume】继续。 2，代码分析 原始项目： https://code.google.com/p/java-large-file-uploader/ 这个项目最后更新的时间是 2012 年，项目进行了封装使用最简单的方法实现了http的断点上传。 因为html5 里面有读取文件分割文件的类库，所以才可以支持断点上传，所以这个只能在html5 支持的浏览器上面展示。 同时，在js 和 java 同时使用 cr32 进行文件块的校验，保证数据上传正确。 代码在使用了最新的servlet 3.0 的api，使用了异步执行，监听等方法。 上传类UploadServlet @Component("javaLargeFileUploaderServlet") @WebServlet(name = "javaLargeFileUploaderServlet", urlPatterns = { "

Why Doesn't JQuery Expose its UUID Functionality?

由 倖福魔咒の 提交于 2019-12-09 18:06:08
问题 Underneath the hood JQuery uses a map of "UUIDs" (just a counter it maintains as jQuery.uuid ) to work around the well-known memory leak issues browsers have when you attach a property to a tag in the DOM from Javascript. In lieu of doing so, JQuery uses the $.data(tag, name, value) to store data in a map keyed off of the uuid (a key that can be determined by checking tag[jQuery.expando] ). While $.data() is very useful, there are times you want to map data to tags without dumping that data

jsp实现大文件上传分片上传断点续传

由 南笙酒味 提交于 2019-12-09 17:36:59
1 ，项目调研 因为需要研究下断点上传的问题。找了很久终于找到一个比较好的项目。 在 GoogleCode 上面，代码弄下来超级不方便，还是配置 hosts 才好，把代码重新上传到了 github 上面。 https://github.com/freewebsys/java-large-file-uploader-demo 效果： 上传中，显示进度，时间，百分比。 点击【 Pause 】暂停，点击【 Resume 】继续。 2 ，代码分析 原始项目： https://code.google.com/p/java-large-file-uploader/ 这个项目最后更新的时间是 2012 年，项目进行了封装使用最简单的方法实现了 http 的断点上传。 因为 html5 里面有读取文件分割文件的类库，所以才可以支持断点上传，所以这个只能在 html5 支持的浏览器上面展示。 同时，在 js 和 java 同时使用 cr32 进行文件块的校验，保证数据上传正确。 代码在使用了最新的 servlet 3.0 的 api ，使用了异步执行，监听等方法。 上传类 UploadServlet @Component("javaLargeFileUploaderServlet") @WebServlet(name = "javaLargeFileUploaderServlet",

cutdown uuid further to make short string

由 怎甘沉沦 提交于 2019-12-09 16:11:51
问题 I need to generate unique record id for the given unique string. I tried using uuid format which seems to be good. But we feel that is lengthly. so we need to cutdown the uuid string 9f218a38-12cd-5942-b877-80adc0589315 to smaller. By removing '-' we can save 4 chars. What is the safest part to remove from uuid? We don't need universally unique id but we like to use uuid as a source but cut down strings. We need unique id specific to site/database (SQL Server/ADO.NET Data services). Any idea

MySQL set default id UUID

由 僤鯓⒐⒋嵵緔 提交于 2019-12-09 13:09:27
问题 I'm trying to create tables in a database that has an id field that will populate the id with an UUID by default. I tried something like: CREATE TABLE FOO ( id CHAR(36) PRIMARY KEY DEFAULT uuid() ); I greatly appreciate your assistance. 回答1: MySQL as of 5.7 does not support using a function as the default value of a column. The DEFAULT value clause in a data type specification indicates a default value for a column. With one exception, the default value must be a constant; it cannot be a
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