OrientDB
Querydsl
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| OrientDB | Querydsl | |
|---|---|---|
| 3 | 6 | |
| 4,691 | 4,566 | |
| 0.5% | 1.1% | |
| 9.8 | 4.4 | |
| 4 days ago | 3 days ago | |
| Java | Java | |
| Apache License 2.0 | Apache License 2.0 |
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
OrientDB
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Graph Databases vs Relational Databases: What and why?
First, you need to choose a specific graph database platform to work with, such as Neo4j, OrientDB, JanusGraph, Arangodb or Amazon Neptune. Once you have selected a platform, you can then start working with graph data using the platform's query language.
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Database of Databases
OrientDB
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Any graph database with a future?
I think the best multi-modal with a high focus on their graph-side outside of Neo4j for the last few years has been OrientDB.
Querydsl
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PostgreSQL Is Enough
There is a bit of tooling needed but is already around. For Java for example I had very good experience with a combination of flyway [1] for migrations, testcontainers [2] for making integration tests as easy as unit tests and querydsl [3] for a query and mapping layer.
[1] https://github.com/flyway/flyway
[2] https://java.testcontainers.org/modules/databases/postgres/
[3] https://github.com/querydsl/querydsl
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Apache Empire-Db: Full SQL Freedom for Java
http://querydsl.com/ also seems similar
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Useful & Unknown Java Libraries - Piotr's TechBlog
As for JPA: I cannot miss the QueryDSL library for building typesafe queries. Another interesting alternative is Jinq, that provides a java stream api to query entities.
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You might not need an ORM
> all I really want is a nice API for building queries (that actually supports all underlying database features) and automatic mapping of the results to whatever objects/structs and primitives the language supports.
For Java based solutions, check out https://www.jooq.org/ or http://querydsl.com/
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How do access sql through java in the real world?
QueryDsl -- http://querydsl.com
- How to build SQL query strings?
What are some alternatives?
JetBrains Xodus - Transactional schema-less embedded database used by JetBrains YouTrack and JetBrains Hub.
jOOQ - jOOQ is the best way to write SQL in Java
Flyway - Flyway by Redgate • Database Migrations Made Easy.
JDBI - The Jdbi library provides convenient, idiomatic access to relational databases in Java and other JVM technologies such as Kotlin, Clojure or Scala.
Crate - CrateDB is a distributed and scalable SQL database for storing and analyzing massive amounts of data in near real-time, even with complex queries. It is PostgreSQL-compatible, and based on Lucene.
Jinq - LINQ-style queries for Java 8
Apache Hive - Apache Hive
Presto - The official home of the Presto distributed SQL query engine for big data
Spring Data JPA - Simplifies the development of creating a JPA-based data access layer.
MapDB - MapDB provides concurrent Maps, Sets and Queues backed by disk storage or off-heap-memory. It is a fast and easy to use embedded Java database engine.