datasource

Spring Boot - Change connection dynamically

由 帅比萌擦擦* 提交于 2019-12-09 03:36:21
问题 I have a Spring Boot project with multiple databases of different years and these databases have same tables so the only difference is the year (..., DB2016, DB2017). In the controller of the application i need to return data that belong to "different" years. Moreover in future years other databases will be created (eg. in 2018 there's going to be a db named "DB2018"). So my problem is how to switch the connection among databases without creating a new datasource and a new repository every

Accessing the full DataRow from the DataSource in a ListView ItemDataBound event handler

由 試著忘記壹切 提交于 2019-12-08 22:02:25
问题 Is it at all possible within a ListView ItemDataBound event handler to gain access to the full DataRow for that event? I need to do a lot of processing for the entire row on binding, but using data item values in the datarow that I am not actually using in the display itself. 回答1: Try this DataRowView dr = (DataRowView)DataBinder.GetDataItem(e.Item); using dr.Item.ItemArray you can access the entire row. 回答2: Perhaps try to use the ListViewDataItem property to access the properties of the

Invalid update: invalid number of rows in section 0 UITableView

由 喜欢而已 提交于 2019-12-08 20:53:08
问题 I know this has been asked before 50 times but I have looked through all the other answers and didn't find anything that could fix my issue. Anyway this is my code: NSMutableArray *cellIndicesToBeDeleted = [[NSMutableArray alloc] init]; for (int i = 0; i < [thetableView numberOfRowsInSection:0]; i++) { NSIndexPath *p = [NSIndexPath indexPathForRow:i inSection:0]; if ([[thetableView cellForRowAtIndexPath:p] accessoryType] == UITableViewCellAccessoryCheckmark) { [cellIndicesToBeDeleted

Filter data grid view list with the value from the search text box: 'Object reference not set to an instance of an object.'

由 怎甘沉沦 提交于 2019-12-08 18:38:28
I have set up a text box to search names on my data grid but I am receiving the error: 'Object reference not set to an instance of an object.' List<Member> members = new List<Member>(); public class Member { public int id { get; set; } public string name { get; set; } public int age { get; set; } public Image image_url { get; set; } } // In a keyup event of the text box (memberGrid.DataSource as DataTable).DefaultView.RowFilter = string.Format("name = '{0}'", searchBox.Text); I have attempted to change DataTable to List or Member . I have also tried casting using List/Member in front of

Best JDBC data source bean class

由 冷暖自知 提交于 2019-12-08 17:07:22
问题 I see that some people use org.apache.commons.dbcp.BasicDataSource while other configurations have com.mchange.v2.c3p0.ComboPooledDataSource . Spring has its own: org.springframework.jdbc.datasource.DriverManagerDataSource There are probably even more. But which one is best? I have a JPA/Hibernate three tier application that needs connection pooling, but it looks like that all support this.... 回答1: Spring has its own: org.springframework.jdbc.datasource.DriverManagerDataSource The class org

Set SelectedItem on a combobox bound to datasource

由 懵懂的女人 提交于 2019-12-08 15:11:43
问题 List<Customer> _customers = getCustomers().ToList(); BindingSource bsCustomers = new BindingSource(); bsCustomers.DataSource = _customers; comboBox.DataSource = bsCustomers.DataSource; comboBox.DisplayMember = "name"; comboBox.ValueMember = "id"; Now how do I set the combobox's Item to something other than the first in the list? Tried comboBox.SelectedItem = someCustomer; ...and lots of other stuff but no luck so far... 回答1: You should do comboBox.SelectedValue = "valueToSelect"; or comboBox

Intercept connection pooling of Datasource connections in JEE container

由 浪子不回头ぞ 提交于 2019-12-08 14:46:14
问题 is it possible to intercept the connection pooling mechanism of a DataSource in a JEE container? For (un)setting some information on the connection's context I'm searching for a way to intercept the pooling mechanism so that I know when and which connection is put back into the pool. So does anyone know a (common) way to do this? Some additional info: The application runs on Wildfly Using Hibernate for ORM 回答1: The option connection-listener in datasource configuration can be the solution.

Grails - Getting data from a different datasource and saving it in my Grails database

由 笑着哭i 提交于 2019-12-08 13:43:29
问题 I have a a Grails project that needs to retrieve data from a database that is running on a different project. This other project is running on a different platform(Drupal), and has different domains. I just need read some of the tables in this database, and save it on my own datasource. What would be the best way of accomplishing this? 回答1: The quickest way would be to use GORM's support for multiple datasources, which is intended to be used to partition your domain classes between two or

WPF IEnumerable<T> vs IQueryable<T> as DataSource

由 冷暖自知 提交于 2019-12-08 13:29:26
问题 I have a WPF ListView and I bind it to a IEnumerable<T> collection. Everything works fine, but when I bind it to the IQueryable<T> collection, there are no items in list anymore.. Why? Is it not observable or what? When I look at the definition: public interface IQueryable<T> : IEnumerable<T>, IQueryable, IEnumerable and public interface IEnumerable<T> : IEnumerable so where is the problem? 回答1: It should work, as you correctly point out, these types are compatible. Turn on debugging in your

Target DataSource dynamically in Weblogic, JMX or another options

由 China☆狼群 提交于 2019-12-08 10:00:45
问题 As i mentioned in title ;we need to target datasources to their related wepapp on weblogic. After some googling i could find handling datasources defined before and deployed .war apps on the server . But i want to match them. I edited the tutorials below i linked ,according to my need . But the last and important part is matching datasource with my applications . Is there any alternative way or a tutorial you can point me ? Getting datasource properties Finding available .war file on path and
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