dmds | DMDS is a highly scalable distributed MySQL | Key Value Database library

by ZhongAnTech Java Version: Current License: GPL-2.0

X-Ray Key Features Code Snippets Community Discussions(4)Vulnerabilities Install Support

kandi X-RAY | dmds Summary

dmds is a Java library typically used in Database, Key Value Database applications. dmds has no bugs, it has no vulnerabilities, it has build file available, it has a Strong Copyleft License and it has low support. You can download it from GitHub.

Support sharding database and table in the same time. Focus on MySQL , remove some unnecessary features like zookeeper config 、 catlte .

Support

Quality

Security

License

Reuse

Support

dmds has a low active ecosystem.

It has 15 star(s) with 3 fork(s). There are 3 watchers for this library.

It had no major release in the last 6 months.

There are 1 open issues and 0 have been closed. On average issues are closed in 134 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of dmds is current.

Quality

dmds has 0 bugs and 0 code smells.

Security

dmds has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

dmds code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

dmds is licensed under the GPL-2.0 License. This license is Strong Copyleft.

Strong Copyleft licenses enforce sharing, and you can use them when creating open source projects.

Reuse

dmds releases are not available. You will need to build from source code and install.

Build file is available. You can build the component from source.

Installation instructions are not available. Examples and code snippets are available.

dmds saves you 21622 person hours of effort in developing the same functionality from scratch.

It has 42441 lines of code, 3385 functions and 457 files.

It has high code complexity. Code complexity directly impacts maintainability of the code.

Top functions reviewed by kandi - BETA

kandi has reviewed dmds and discovered the below as its top functions. This is intended to give you an instant insight into dmds implemented functionality, and help decide if they suit your requirements.

Do EOF
Tries to parse an aggregate column
Translate group by clause to column index
On row metadata
Handles a query
Parse the statement
Handle set statement
Handles a select statement
Send ok response
Route normal SQL
Handles handshake
Package private for testing
Route table
Format date
This method is called when a SQL query result is received
Creates the select parser
Change sql
Dump byte array as hex
Parses the SQL
Visit a SQLLoadDataInFileStatementStatement
Handle commands
Route
Calculates a range of the given begin value
Method to find route for one table
Initializes the cache
Executes a query

Get all kandi verified functions for this library.

dmds Key Features

No Key Features are available at this moment for dmds.

dmds Examples and Code Snippets

No Code Snippets are available at this moment for dmds.

Community Discussions

Trending Discussions on dmds

My question is about Resource constraint Project Scheduling Problem code in cplex. I am trying to apply Preemption to it

How could intersection be expressed in terms of projection and an equijoin?

Spring Boot Data - Getting 'Not a managed Type' error when the package is not included in default entityManager

Spring Boot Datasource annotated with ConfigurationProperties but the properties are not loaded

QUESTION

My question is about Resource constraint Project Scheduling Problem code in cplex. I am trying to apply Preemption to it

Asked 2019-Apr-04 at 22:49

I am working on RCPSP and want to apply Preemption to it.
I have divided the duration of every task into equal parts. Now after doing that I am unable to apply Precedence constraints to each of individual unit duration of a task.

...

ANSWER

Answered 2019-Feb-14 at 15:59

First, you should add some constraints that says that each task represented by interval itvs[t] spans the set of individual activities a[], something like: span(itvs[t], all(i in 1..t.pt) a[])

And then, say that the individual activities of a given task t form a chain, with constraints like: endBeforeStart(a[],[])

But note that for this preemptive version of the problem, you will loose one of the major interest of CP Optimizer which is the fact it avoids the enumeration of time. Here, if tasks are fully preemptive, you have to divide each task of duration D into D individual activities. If you know you have some constraints on the preemption of tasks (for instance that each individual activity has a minimal duration larger than the time unit), this can be exploited in the model to create less sub-activities.

Source https://stackoverflow.com/questions/54684892

QUESTION

How could intersection be expressed in terms of projection and an equijoin?

Asked 2018-Jan-21 at 22:00

Here (at slide #46) says: Show that the intersection R ∩ S can be expressed using a combination of projection and an equijoin.

How is it possible? For what I know, R ∩ S = R - (R - S), so for the intersection the two relations must have the same attributes. Having them the same attributes, why should we need projection?

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ANSWER

Answered 2018-Jan-21 at 22:00

In slide 27 of the file that you have linked, it is said that the relations argument of the union and difference must only have the same arity, not necessarily the same attributes, and this is true also for the intersection.

So they can have different names, and in this case if you do an equijoin on R and S over the attributes in the same position the result is equivalent to the intersection but with more attributes that those necessary, so the projection is required to get a relation with the right number of attributes.

For instance, suppose you have:

Source https://stackoverflow.com/questions/48369057

QUESTION

Spring Boot Data - Getting 'Not a managed Type' error when the package is not included in default entityManager

Asked 2017-May-17 at 11:58

My application has two entity managers (entityManagerFactory and entityManagerFactorySec). The default is associated with package 'com.abc.model' and the second one is associated with package 'com.abc.uw.model'.

What I observed is that the application startup is fine only if I include the second package as well to the default Entitymanager. Getting the following error even though I see from the logs that the repo got created.

...

ANSWER

Answered 2017-May-17 at 11:58

I'm 99% sure that one way or the other you are referencing entities from the second package in the repository for the first one. Either directly or possibly through some attribute of an entity.

Source https://stackoverflow.com/questions/44023156

QUESTION

Spring Boot Datasource annotated with ConfigurationProperties but the properties are not loaded

Asked 2017-Jan-16 at 14:58

I am trying to wire datasource to get properties from application(yml) file but the Datasourcebuilder is not reading those properties. I referred Stackoverflow as well as Spring Boot docs but could not see anything missing in my code. I am pasting the code below that uses Spring Boot 1.4.3.RELEASE

...

ANSWER

Answered 2017-Jan-16 at 14:58

If you want to use the bean Spring has created within its container you need to inject it, you can not use "new".

Try:

Source https://stackoverflow.com/questions/41675575

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install dmds

You can download it from GitHub.
You can use dmds 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 dmds 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 .