combining multiple data sources into one view tableau
combining multiple data sources into one view tableau
Learn about combining multiple data sources into one view tableau, we have the largest and most updated combining multiple data sources into one view tableau information on alibabacloud.com
= "Datasource2"; Private Static FinalThreadlocalNewThreadlocal(); Public Static voidSetcustomertype (String customertype) {contextholder.set (customertype); } Public StaticString Getcustomertype () {returnContextholder.get (); } Public Static voidClearcustomertype () {contextholder.remove (); }}Dynamic Data source management, how to choose to control the specific data
* @return */@SuppressWarnings ({"Rawtypes", "Unchecked"}) public static map1.3 Write a Testbase class, which is used to store testng Dataproviderpublic class Testbase {@DataProviderpublic object[][] Dataprovider () {return this.gettestdata ();} Private object[][] Gettestdata () {Propertiesdata testData = new Propertiesdata (); listAs you can see, as long as I have a class that can provide a two-dimensional array of data types: list1.4 In 1.3 There is
Diverse data sources are becoming more and more common in report development. the effective support of the collection and computing reports for diverse data sources makes the development of such reports very simple, currently, in addition to supporting different types of data
It's always a chore to configure data sources and related things, caches, and so on before Springboot appears, but these basics can be easily done by default when Springboot appears. That's why you're now advocating for templates > configurations, but then again, if you want to match the template, the tedious place is still as cumbersome as it is today, with multiple
have2. Some data binding is supported to save server resources (that is, datasource only needs to specify the data of the page to be displayed, and datasource does not need to be the entire data source like the built-in gridview)3. You can customize the pagination bar and pagination button styles without refreshing new pages.4. You can customize the sorting bar
Previously, only the paging plug-ins under the single data source were used, and almost no configuration was necessary. A static method can be done.Pagehelper.startpage (Pagenum, pageSize);Later using a multi-data source (different database), the Pagehelper paging plugin needs to set a default database, MySQL, Oracle, or other.However, it is not possible to switch in real-time, resulting in requests for the
To complete the links for different data sources, first, you need to define a data source label (tag) for each record under different data sources, and then, to represent the different records under each data source and complete t
expression to complete the report production directly using the result set returned by the collection script. The report shows the following results: As you can see, using a collector script can quickly accomplish this type of scenario with multiple judgments. Moreover, the external set-up script has a visual editing and debugging environment, and the edited script can be reused (called by other reports or programs). However, if the script has been d
6. Configure multiple data sources in spring boot 1.5.4, spring1.5.4
Spring boot supports multi-data source configuration and does not need to write many classes on the Internet. This is especially troublesome. Please take a look at the following solutions officially. Rest assured!
1. First define the
I wanted to write without writing because the Dynamic Data source switch is resolved, but cannot be added dynamically, and adding a new data source requires restarting the Web server. Later this problem solved, but because the business is busy, today, to write this article for a week without turning off the computer.
The company's business is this, there are currently nearly 150 db, each DB database library
After the system is reformed by Sharding, the original single database will become multiple databases, how to ensure the atomicity and consistency of simultaneous operation of multiple data sources is a problem that has to be considered. Overall, there are currently three ways of dealing with a distributed system: dist
= jdbc:mysql://Server ip:3306/database name (may not be the same as above)?createdatabaseifnotexist=trueuseunicode=true Characterencoding=utf-8zerodatetimebehavior=converttonull
Jdbc_t.username=root
jdbc_t.password= Root
Note: Jdbc.driverclassname and JDBC_ T.driverclassname can use Jdbc.driverclassname, if the use of one is in the back of the applicationcontext.xml configuration of the same can be, here to facilitate the description, separate write. Similarly, if the user name and
Configure multiple data sources in JPA. You can configure multiple
Of course, persistence-unit names cannot be repeated:
Org. Apache. openjpa. Persistence. persistenceproviderimplOrg. Apache. openjpa. Persistence. persistenceproviderimpl
Of course, you can also configure more d
This is the problem I encountered. The project uses spring + hibernate + proxool for database connection management and access. The requirement is to dynamically configure and load multiple data sources. The idea is:
1. Implement the applicationlistener interface using a kind of advanceddatasourceinitizer. When the contextrefreshevent event is published, the data
Using spring and hibernate can easily implement transaction management for a data source. However, if you need to control transactions for multiple data sources at the same time and do not want to use the mechanism provided by heavyweight containers, you can use jotm for the purpose.
Jotm configuration is very simple.
1: First configure the data source, can now be introduced in the configuration file, where I write directly in the spring configuration fileFirst, a single data source configuration file is givenThe main changes are these two places,Now look at the configuration of multiple data sourcesConfigure two
I. Spring configuring multiple data sourcesTwo. Spring Configuration data sourceThree. Implementation of Multipledatasource 1:package com.wbl.modal;
2:
3:import org.springframework.jdbc.datasource.lookup.AbstractRoutingDataSource;
4:
5:/**
6: * Created with Simple_love
7: * date:2016/4/26.
8: * Time:11:12
9: * /
:publiccla
configure a dual data source, when the connection pool is idle for more than 8 hours, the database connection will be automatically disconnected, in order to avoid this situation, you need to add the following configuration under the Yml file: Datasource:primary:max-idle:10 max-wait:10000 min-idle:5initial-size:5 validation-query:SELECT1 test-on-borrow:falsetest-while-idle:true time-between-eviction-runs-millis:18800 #就是这句话 secondary: max-idle:10 m
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.