cursor | 易学教程

Oracle doesn't remove cursors after closing result set

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Note: we reuse single connection. ************************************************ public Connection connection() { try { if ((connection == null) || (connection.isClosed())) { if (connection!=null) log.severe("Connection was closed !"); connection = DriverManager.getConnection(jdbcURL, username, password); } } catch (SQLException e) { log.severe("can't connect: " + e.getMessage()); } return connection; } ************************************************** public IngisObject[] select(String query, String idColumnName, String[] columns) { Connection con = connection(); Vector<IngisObject>

Getting SQLite database and storing it in an array of objects

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问题 I'm looking at the Notes app example from the Android SDK. What I want to learn how to do is instead of using a CursorAdapter to just pass to a ListAdpater/ListView to sort out, I want to know how I can deal with the data myself; particularly in an ArrayList form. In the example, a note basically has an id, title, and body. I want to know how I can query the SQLite database and use the cursor it returns to collect the data and create object instances of an object I'll call Note which has

Intellij 14 weird editor/cursor behaviour

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I just upgraded my Intellij IDEA to version 14, but I have the problem that my cursor in the editor window is acting "different". It starts of in a sort of protected mode, which looks like the insert mode but it isn't, where I can't insert anything. After pressing some keys like a it changes back to normal except that sometimes it goes in a selection mode and by that I mean if I hit backspace instead of deleting the character as expected it just selects/highlights it. I find this behavior really annoying and I hope one of you can help me. Additional Information: Mac OS X 10.10 Yosemite

130+程序员必备的 vim 命令

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Vim 是从 vi 发展出来的一个文本编辑器。代码补完、编译及错误跳转等方便编程的功能特别丰富，在程序员中被广泛使用。和 Emacs 并列成为类 Unix 系统用户最喜欢的编辑器。这里收录了130+程序员必备的 vim 命令，帮助你提高开发效率。基本命令 :e filename Open filename for edition :w Save file :q Exit Vim :q! Quit without saving :x Write file (if changes has been made) and exit :sav filename Saves file as filename . Repeats the last change made in normal mode 5. Repeats 5 times the last change made in normal mode 在文件中移动 k or Up Arrow move the cursor up one line j or Down Arrow move the cursor down one line e move the cursor to the end of the word b move the cursor to the begining of the word 0 move the

Android四大组件之一 ContentProvider

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一、什么是ContentProvider ContentProvider是Android的四大组件之一，主要用于给不同应用程序提供接口，实现数据共享，并且可以保证数据的安全性。在手机的联系人、短信等应用都会创建ContentProvider提供接口将应用内数据提供给其他应用使用。ContentProvider的底层实现还是使用Binder，主要是以表格的形式操作存储数据，并且可以包含多张表格;也支持文件类型的数据储存操作，如图片、视频等。二、ContentProvider的基础知识 BroadCast需要使用BroadCast Receive接收广播，而Content Provider数据存储需要借助ContentResolver类提供的一系列方法进行增删改查操作。ContentResolver可以通过Context的getContentResolver()方法获取实例。ContentResolver实例访问对应的数据，使用CRUD方法对数据进行增删改查。 1.内容 URI 内容 URI 给内容提供器中的数据建立了唯一标识符，内容URI的定义和Intentfilter中的data标签下的Uri基本是一致的，它由三部分组成，协议声明（content）、权限（authority）和路径（path）。权限（authority）是对不同应用的区分主要是“应用的包名”，路径（path

change cursor to busy while page is loading

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问题 I understand how to use javascript to change the cursor to busy while the page is making and ajax call. However I have a page that does not use ajax, it uses a postback to reload the page. However the load is rather data intensive and it takes a few seconds. During this time the user can still click on the page. I want to turn the cursor to "waiting" so the user does not try to click on the page. For example I have a couple of dropdowns that cause postback. I make a selection and the page

Is there any way I can integrate the MS Office Smooth Typing in a C# application?

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问题 In my opinion the MS Office Smooth Typing is a very innovating feature in the Office Suite, and I'd like to know if this feature is available for programmers in the .NET Framework, specifically in the C# language. If so, could you please post in your answer a link to the documentation and might also a usage example ? Thanks. 回答1: I don't own Office, so I can't look at the feature, but I needed to fiddle around with the caret in RichTextBoxes a while ago and decided that it wasn't worth the

Oracle - select a specific column from a ref cursor

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问题 I have a table named Table1. It has lots of columns, one of them is Column1. I don't know the other columns, they may even change sometimes. There is a strongly typed ref cursor type which returns Table1%rowtype, named cur_Table1. I have a stored procedure named SP1 which has an out parameter of type cur_Table1. I'm calling this SP1 stored procedure from another database that only sees this stored procedure, but not the table or the type itself. How do I select only Column1 from the returned

Create a table from CSV columns in SQL Server without using a cursor

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问题 Given a table: |Name | Hobbies | ----------------------------------- |Joe | Eating,Running,Golf | |Dafydd | Swimming,Coding,Gaming | I would like to split these rows out to get: |Name | Hobby | ---------------------- |Joe | Eating | |Joe | Running | |Joe | Golf | |Dafydd | Swimming | |Dafydd | Coding | |Dafydd | Gaming | I have completed this below (example is ready to run in SSMS), buy my solution uses a cursor which I think is ugly. Is there a better way of doing this? I am on SQL Server

Android; I only have 2 contacts, yet I can obtain 5 from a query, why?

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I have setup 2 test contacts in my emulator. I'm running the following query, it should pick them both out, populate my domain object, and add to a list. The output at the bottom should therefore be 2, but it is 5, why is this? (cursor.getCount() is 5 instead of 2) I have stepped through each iteration of the while loop and it is retreving the same contact multiple times, but with different values for POSTCODE , such as the phone number ContentResolver cr = getContentResolver(); Cursor cursor = cr.query(ContactsContract.Data.CONTENT_URI, null, null, null, null); List<MeCercanaContact> contacts