OCM | An ORM layer for the Apache Cassandra web scale database | Database library
kandi X-RAY | OCM Summary
kandi X-RAY | OCM Summary
OHM is an interface tool for the Apache Project's clustered database engine, Cassandra. OCM is licensed under the Apache License, Version 2.0 a copy of which is included in the license file. Interfacing a client application directly with Cassandra can be difficult since it lacks many features of a traditional relational database such as the lack of Data Types. OCM solves this by providing an ORM like interface, or at least a weakly relational one, for client applications to interact with. This is achieved by the developer creating a OCM spec file which sets out the structure of the data inside the database. The developer the feeds these spec files into the OCM Complier which generates the interface code in a supported high level language. This generated code can then be included in the client application to interact with the database.
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Top functions reviewed by kandi - BETA
- Saves the data
- Convert a boolean value to a byte array
- Returns the error message
- Escape special characters
- Delete the table
- Load accounts from the database
- Deletes the current user record
- Load accounts
- Returns the next row
- Get the rows from the table
- Saves the table
- Tries to get user by email address
- Get the token at index
- Return the next token
- Get suffix
- Add a child
OCM Key Features
OCM Examples and Code Snippets
Community Discussions
Trending Discussions on OCM
QUESTION
I have the following code written in package test/api
under project A:
ANSWER
Answered 2020-Feb-27 at 11:25You need to move the findCluster
declaration to a non-test file if you don't want it to be omitted when the package is imported.
When compiling packages, build ignores files that end in '_test.go'.
https://golang.org/cmd/go/#hdr-Compile_packages_and_dependencies
QUESTION
Nginx uses the PCRE engine for evaluating regular expressions, the documentation state that /
delimiter is not used so we don’t have to escape the forward slash /
in an URI as we may do in a standard regex. An example of a valid nginx regex is location ~* /myapp/.+\.php$
BUT the following code is escaping the forward slash
location ~ ^\/(?:index|core\/ajax\/update|ocs\/v2|ocm-provider\/.+)\.php(?:$|\/)
What does \/
exactly mean in that context and why is it needed when the documentation says otherwise?
ANSWER
Answered 2020-Jan-21 at 15:27While Nginx does not require escaping the forward slash /
it does not either deny escaping it like we could escape any other character.
The first purpose of the regex special character \
is meant to escape the next character and thus nginx is just translating/matching \/
to /
like it would translate/match \j
to literal j
(the example have no purpose never the less \j
match literal j
).
One purpose of escaping forward slashes in the context of nginx could be for code portability.
Note that \
followed by a character have probably a different meaning than just escaping the followed char, a complete list is available here
Source: @monkeyzeus and @richard-smith comments
QUESTION
we have one java application which running currently on weblogic 10. we need to deploy this application to weblogic 12.2.1.2. So I have created one weblogic domain in weblogic 12.2.1.2 and I made change in config.xml file according to config.xml which we already have for weblogic 10.
server and java combination we are using:
- weblogic 10 + jrockit_160_05(java)
- weblogic 12.2.1 + java 8
When we start server I getting many error.see the below log.
...ANSWER
Answered 2017-May-29 at 10:40To fix this issue I have inserted one below line of code in startWeblogic.cmd file.
set JAVA_OPTIONS=%JAVA_OPTIONS% -Dweblogic.configuration.schemaValidationEnabled=false
QUESTION
I am trying to change the x_ticks labels of a figure with two subplots to scalar values.
That is, I would like to change the 10**0
and 10**1
to 1
and 10
respectively.
Besides, I would like to set the rest of the tick labels [1,2,3,4,5,6,7,8,9,10]
The figure code is this:
...ANSWER
Answered 2019-Nov-02 at 21:32Here is a mcve with exponential tick labels:
QUESTION
I have been using OnclickMiner to Mine for VertCoin, but still can't get exactly what's going on when I run the software. I have installed OneClick Miner and the wallet, to solo-mine. Now, I have enabled the CLI option in the OCM settings to show messages of what is actually going on, but still can't understand those messages.
What do these lines actually mean? I am attaching a screenshot of the OCM_CPUMiner.exe:
Now, if you have the expertise, please translate the lines of this black screen. Maybe it could be useful to others too. I have done a lot of search and nothing relevant showed up.
Incidentally, this is not a question about solo vs pool mining or a choice of which cryptocurrency to mine. Although that discussion would be very useful, I think I must ask in in another thread.
...ANSWER
Answered 2018-Dec-21 at 21:43Console Output and Meanings:
Starting Stratum on stratum+tcp://localhost:9181
- The application is starting a stratum server hosted on your machine at port 9181.
4 miner threads started, using 'lyra2rev2' algorithm
- You are mining on 4 different threads, probably each on a different core on your processor. The lyra2rev2
algorithm is used to calculate the proof-of-work.
Stratum difficulty set to 1 (.00391)
- The initial difficulty for mining is set, you will submit blocks that meet that difficulty.
API bind to port 4084 failed
- The application is trying to start an API hosted on your machine on port 4084, but the port is probably unavailable or being used.
CPU #x: xx kH/s
- This shows an updating hash rate per core that your machine is doing. E.g. 0.79 kH/s
is doing 790 hashes per second on that core.
Stratum connection timeout
- The stratum sockets are full.
Stratum connection interrupted
- The stratum connection was disconnected.
lyra2rev2 block #, diff #
- This shows you the current block that has been mined on the network and the current network difficulty to mine the next block.
accepted 1/1 (diff 0.009), 34.95kH/x yes!
- This is a share that was accepted from your miner by the pool you are mining on.
QUESTION
When trying to copy data from an Excel userform in to an Access table via SQL I am encountering an error on a field that is a Yes/No type in the database. How can I format the info correctly so that it updates the database?
I have looked at some other examples of copying data into the Yes/No fields in Access, as well as trying my code in a number of different formats, with double quotations, single quotations & as it appears below
...ANSWER
Answered 2019-Jun-03 at 09:52Column name User
is the reserved keyword. Can you add square brackets around the keyword to fix the issue:
QUESTION
The problem is map data from class OldCompanyMovie(ocm : List[(company:String, movie:String, actor:String)])
to List[CompanyMovie(company:String, movies: List[Movies(movie:String, actors : List[actor:String])])]
Description :
by the actor in the same movie should be list of actor in movie like class Movies(movie: String, actors: List[actor:String])
same with list actor the movie should be list of movie in company like CompanyMovie(company: String, movies : List[movie:Movies]))
overall should be List[CompanyMovie(company:String, Movies(mv : List[movie:String, List[actor:String]]))]
*Update I have tried for a haft of day so nothing be good the result is close to but might be bad performance
...ANSWER
Answered 2019-May-17 at 06:58My try. I'm not sure it's good practice.
QUESTION
I am trying to fetch an image using file_get_contents
function but it gives an error. To handle the error I am using try catch block but it does not catch the error and fails.
My code:
...ANSWER
Answered 2018-Jun-29 at 06:53try/catch
doesn't work because a warning
is not an exception
.
You can try this code so you can catch warnings as well.
QUESTION
I have a class:
...ANSWER
Answered 2019-Mar-15 at 09:41Why does it print Outer enter and Outer exit at all despite using context manager on already created object in a function?
The with
statement you define says that python should call __enter__
before the content of the with
statement is executed and __exit__
after that.
It doesn't matter if the object has allready been initialized. The with statement is going to call __enter__
and __exit__
anyway
It raises
AttributeError: enter
As you are returning a tuple and the tuple doesn't contain a definition of __enter__
this error is thrown.
I don't get any errors. Neither I get Inner created and Inner enter. Why is that so?
You don't get any errors because you use the with
statement correctly with your OuterCtxManager
and you don't get the output Inner enter
and Inner exit
because you don't use the with
statement on the InnerCtxManager
type.
QUESTION
I am having problems with the menu part of a wordpress site (salient theme), when i am on mobile, i open the menu with the hamburger button and have several options, some with sub menus, so the items with sub menus only open when clicking the little arrow icon to the right of the item, i am trying to get it to open also when you click on the item itself by making it so when you click the item it triggers a click on the arrow
here is the html of the menu
and here is the javascript i am doing to get it to work(only doing it for the first item with submenu here), i am new to javascript but for what i've seen i think this should work (i am using the Code Snippets plugin for wordpress)
...ANSWER
Answered 2018-Dec-30 at 15:25For what you seem to want, you almost have it. The only thing that seems to be missing is to prevent the default behavior when you click on the link (which could be a potential problem as pointed on the comments above, because the linked page may be innaccessible through the menu now).
With .preventDefault()
you will prevent the default action for that element for that event, so you would just need to add that:
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install OCM
You can use OCM like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the OCM component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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