pcj | Persistent Collections for Java | Database library

by pmem Java Version: Current License: Non-SPDX

X-Ray Key Features Code Snippets Community Discussions(1)Vulnerabilities Install Support

kandi X-RAY | pcj Summary

pcj is a Java library typically used in Database applications. pcj has no bugs, it has no vulnerabilities and it has low support. However pcj build file is not available and it has a Non-SPDX License. You can download it from GitHub.

This is a "pilot" project to develop a library for Java objects stored in persistent memory. Persistent collections are being emphasized because many applications for persistent memory seem to map well to the use of collections. One of this project's goals is to make programming with persistent objects feel natural to a Java developer, for example, by using familiar Java constructs when incorporating persistence elements such as data consistency and object lifetime. The breadth of persistent types is currently limited and the code is not performance-optimized. We are making the code available because we believe it can be useful in experiments to retrofit existing Java code to use persistent memory and to explore persistent Java programming in general.

Support

Quality

Security

License

Reuse

Support

pcj has a low active ecosystem.

It has 207 star(s) with 23 fork(s). There are 29 watchers for this library.

It had no major release in the last 6 months.

There are 20 open issues and 2 have been closed. On average issues are closed in 12 days. There are 1 open pull requests and 0 closed requests.

It has a neutral sentiment in the developer community.

The latest version of pcj is current.

Quality

pcj has 0 bugs and 0 code smells.

Security

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

pcj code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

pcj has a Non-SPDX License.

Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

Reuse

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

pcj has no build file. You will be need to create the build yourself to build the component from source.

Installation instructions, examples and code snippets are available.

pcj saves you 13598 person hours of effort in developing the same functionality from scratch.

It has 27287 lines of code, 3849 functions and 218 files.

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

Top functions reviewed by kandi - BETA

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

Initializes the array elements from the given data
Stores a long
Set a short value
Performs a parallel touch
Copies the specified array into an array
Converts an array into an object array
Determines the persistence layer hierarchy
Find a field in the given class
Find the constructor for a class
Reconstructs the tree
Compares this buffer with the given position
The main method
Associates the specified key with the specified value
Returns the persistent leaf
Randomly deletes all leaf nodes
Adds the specified elements to this collection
Returns a leaf node for the specified key
Gets the value associated with the specified key
Returns a string representation of this map
Main entry point
Removes keys in a leaf node
Creates a deep copy of this map
Test program
Performs a bulk remove
Entry point for testing
Creates a shallow copy of this map

Get all kandi verified functions for this library.

pcj Key Features

No Key Features are available at this moment for pcj.

pcj Examples and Code Snippets

No Code Snippets are available at this moment for pcj.

Community Discussions

Trending Discussions on pcj

LINQ Left Outer Join Multiple Tables with Group Count and Row Concatenation

QUESTION

LINQ Left Outer Join Multiple Tables with Group Count and Row Concatenation

Asked 2021-Nov-01 at 19:38

Can someone help with below please? I simplified the table/column names, etc. I search everywhere but the answers I get are incomplete solutions for the results I want to achieve below. New to LINQ so please be kind. :-)

TABLES

Parent (ParentId, ParentName, ParentOccupation)
Child (ChildId, ChildName, OtherField, ParentId)
GrandChild (GrandChildId, GrandChildName, OtherField, ChildId)

Parent

...

ANSWER

Answered 2021-Nov-01 at 11:08

EDIT

New comments posted by the author of the question show that the Linq query involves EF Core. My original answer assumed it was a local query (Linq to Object). In fact, it rather seems to be an interpreted query (Linq to Entities).

See linq to entities vs linq to objects - are they the same? for explanations about the distinction between Linq to object and Linq to entities.

In that case, Robert McKee's answer is more to the point.

For curiosity's sake, Linqpad shows that this query:

Source https://stackoverflow.com/questions/69775477

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

Vulnerabilities

No vulnerabilities reported

Install pcj

The following are the prerequisites for building this Java library:.
Linux operating system (tested on CentOS 7.2 and Ubuntu 16.04)
Persistent Memory Development Kit (PMDK)
Java 8 or above
Build tools - g++ compiler and make
Once all the prerequisites have been satisfied:.
sources - builds only sources
examples - builds the sources and examples
tests - builds and runs tests

Support

Thanks for your interest! Right now, substantial architectural changes are still happening in the project. This makes it difficult to contribute code and difficult to effectively process pull requests. We expect these changes to settle out around December of this year and we look forward to code contributions once this happens. We will update this README then.

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