If you access this URL -> https://apacheignite.readme.io/docs/jdbc-driver#section-streaming-mode
There it is mentioned that we can use streaming mode using cfg connection that has to be provided using ignite-jdbc.xml file.
But what are the contents of that file? How do we configure?
As that same page notes, it's "a complete Spring XML configuration." Have a look in the "examples" directory of the Ignite download for some samples, but the important thing is how to find the rest of the cluster.
Please note that preferred option for streaming with JDBC is using thin client driver (which neither needs an XML nor starts a client node) together with SET STREAMING ON.
Related
Am trying spring cloud config server and client as stand-alone separate applications.
on git, i have folder structure like below-
my-config
----projectfolder1
--------application.properties
----projectfolder2
--------application.properties
I would like that spring cloud client named "projectfolder1" should search application.properties within projectfolder1 on git from spring cloud server i.e
----projectfolder1
--------application.properties
and client "projectfolder2" should get the below mentioned properties from spring cloud config server
----projectfolder2
--------application.properties
My Spring Cloud Config server application.properties has-
spring.cloud.config.server.git.search-paths='{application}'
projectfolder1 in its bootstrap.properties has
spring.application.name=projectfolder1
and projectfolder2 in its bootstrap.properties has
spring.application.name=projectfolder2
According to spring cloud config documentation '{application}' in search path should find the files within the "resolved application name" folder on git. But the above '{application}' doesn't work for me. Clients projectfolder1 and projectfolder2 are not able to get any property at all.
pls assist. i know its possible duplicate of another question on stack overflow. but that question is not resolved and i do not have rights to comment on any question being a new user, So i created this as another question here.
I solved it myself.
The trick is to give search-path {application} without quotes as given below.
It was a little tricky as spring documentation mentions it as '{application}' , probably spring developers just wanted to highlight it with quotes.
spring.cloud.config.server.git.search-paths={application}
instead of
spring.cloud.config.server.git.search-paths='{application}'
I am unable to find a code snippet for creating a datasource in Liberty via a Java Client. I looked up the ConnectionManagerMbean, but its documentation says that the Mbean instance wont be available until it is first used.
Can someone point me in right direction. I am kinda new to both Liberty and JMX so please bear with me if this sounds kinda rookyish.
Thanks in advance.
The reason you are unable to locate any examples of creating a Liberty data source via JMX is because it is not possible in Liberty to create data sources via JMX. In Liberty, data sources can be created via server configuration - the dataSource element - or via the #DataSourceDefinition annotation within an application component or <data-source> element within a deployment descriptor (such as web.xml) of an application.
Once you have created the data source, as you mentioned from the ConnectionManagerMBean documentation, you will need to use the data source first (access it from an application) before the MBean is made available. This aligns with Liberty's goals of having fast startup time and only loading/initializing what applications actually use. The behavior you observe sounds consistent with this, and you just need to perform an operation within your application first, and then you should hopefully be able to access the MBean.
I am using JDBC from ExtLib in my xpages application to connect to SQL and have a JDBC connection file in the Webcontent/WEB-INF/JDBC/mssql.jdbc
Looks something like this and works great
<jdbc>
<driver>com.microsoft.sqlserver.jdbc.SQLServerDriver</driver>
<url>jdbc:sqlserver://server:1433;databaseName=db</url>
<user>sa</user>
<password></password>
</jdbc>
I have a need to make this more dynamic by storing the servername, database, username and password in a notesdocument, is this possible, if so how?
if this is not possible, Is it possible to update the JDBC file programmatically or use other features in ExtLib for making this possible?
We have done this at our company by copying the setup of the JDBCProvider from within the Extension Library, and modifying it so that instead of searching for configuration in xml documents, it will instead search for configuration in Notes documents in using a pre-defined View and Form.
I've just shared it via the jdbcprovider branch in my fork of the ExtLibX project, with the hope to eventually do a pull request to get it into the official OpenNTF ExtLibX, and maybe finally into the core Extension library project.
I have created an 'alpha' release that you can test out, or you can have a browse in the com.ibm.xsp.extlibx.core plugin to see the source code
Here is a blog post that I have written about the first release and there is a short demo video in there as well
http://camerongregor.com/2017/12/05/jdbcnotesdocuments/
Was wondering, what steps am I missing to get a jdbc embeded h2 database working in my play application? Following these docs.
So far editted Application.conf file to contain this:
db.default.driver=org.h2.Driver
db.default.url="jdbc:h2:databases/test"
db.default.user=test
db.default.password="testtest"
Next I created a libs directory and added the jar file
h2-1.3.174.jar
Is this necessary or does the provided driver handle all types of h2 databases (embeded and server - I know it handles in memory)?
Now in the controler how can I access the database? Do I have to start/shutdown the database?
I know I can get connections from the getConnection() method in play.db. But everytime I execute a statement through this connection I get an exception saying no data is available. If I then check - looks like directory
databases/test
was not created so no database files exist.
What am I missing?
H2 works out of the box. Just create a new project in the terminal.
Otherwise, to your listing:
I think you should change db.default.url="jdbc:h2:databases/test" to db.default.url="jdbc:h2:mem:play"
don't need to create lib directories. It's all handeled by the build in dependency mgmt sbt
Just use the model objects and call save/update. No need to call start/shutdown
you are in a framework, it's all there ready for you...
I think you should start reading the documentation from the beginning to the end and examine the example applications. It's all there what you are looking for.
In addition to myborobudur's answer I'll only mention, that you don't need to use memory database, as you can for an instance use file storage (Embedded) or even run H2 as a server and then connect to it with TCP in Server Mode... Everything is clearly described in H2 documentation.
I've got a Spring Web MVC application (and also a BlazeDS application, though not as relevant) where files are dynamically generated based on certain client actions.
I'd like to just map a certain directory on the file system to Spring MVC (or the app server) url and let it serve the files in that directory (with streaming and standard last-modified header support). Ideally, the mapped directory would be configured via the spring config, since I already have support per-machine for setting that up.
So, how can I do this? The best I can find so far is to write a controller that reads the file manually and streams it byte-by-byte. However, that seems far less than ideal. Is support for something like this already baked into Spring MVC or the standard application server spec?
Thanks!
If your processing model supports it, why not cut the middleman of the filesystem out of the picture completely and just stream the files back through the response stream as they are generated? Take a look at the AbstractExcelView and AbstractPDFView classes of Spring MVC to see some examples of how this is done.
or the standard application server spec?
Yes, there is. As you didn't mention which one you're using, I'll give a Tomcat-targeted answer. All you basically need to do is to add a Context element for /path/to/your/resources in /conf/server.xml:
<Context docBase="/path/to/your/resources" path="/resources" />
This way they'll be accessible through http://example.com/resources/...
Ideal for this is using an lightweight proxying server in front of your appserver, like a nginx or lighthttpd. You can configure it for serving static content, without calling your app.
If directory and files so dynamic, you can prepare real path to file at your controller and give this filepath to the frontend server, using headers. For example for nginx it's a X-Accel-Redirect header. Read more about this (and follow links for other http servers) there