JOOQ Object Oriented Querying GudangMovies21 Rebahinxxi LK21

    jOOQ Object Oriented Querying, commonly known as jOOQ, is a light database-mapping software library in Java that implements the active record pattern. Its purpose is to be both relational and object oriented by providing a domain-specific language to construct queries from classes generated from a database schema.


    Paradigm


    jOOQ claims that SQL should come first in any database integration. Thus, it does not introduce a new textual query language, but rather allows for constructing plain SQL from jOOQ objects and code generated from a database schema. jOOQ uses JDBC to call the underlying SQL queries.
    While it provides abstraction on top of JDBC, jOOQ does not have as much functionality and complexity as standard object–relational mapping libraries such as EclipseLink or Hibernate.
    jOOQ's closeness to SQL has advantages over typical object–relational mapping libraries. SQL has many features that cannot be used in an object oriented programming paradigm; this set of differences is referred to as the object–relational impedance mismatch. By being close to SQL, jOOQ helps to prevent syntax errors and type mapping problems. Also, variable binding is taken care of. It is also possible in jOOQ to create very complex queries, that involve aliasing, unions, nested selects and complex joins. jOOQ also supports database-specific features, such as UDTs, enum types, stored procedures and native functions.


    Example


    A nested query selecting from an aliased table

    And its equivalent in jOOQ DSL:

    Or more simply, using code generation from the database metadata to generate constants:


    See also


    Apache Calcite
    List of object–relational mapping software
    SQL/OLB


    References




    External links


    jOOQ Home
    Using Spring Boot with jOOQ
    JSR-341
    JaQu Archived 2021-05-05 at the Wayback Machine
    Linq4j
    Quaere
    QueryDSL

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Jooq-Java Object Oriented Querying | PDF | Sql | Databases

Jooq-Java Object Oriented Querying | PDF | Sql | Databases

Jooq java object oriented querying | PDF

Jooq java object oriented querying | PDF

jOOQ Object Oriented Querying

jOOQ Object Oriented Querying

jOOQ: The easiest way to write SQL in Java

jOOQ: The easiest way to write SQL in Java

jOOQ: The easiest way to write SQL in Java

jOOQ: The easiest way to write SQL in Java

jOOQ: The easiest way to write SQL in Java

jOOQ: The easiest way to write SQL in Java

jOOQ manuals, tutorials, FAQs, references

jOOQ manuals, tutorials, FAQs, references

Free downloads and pricing for jOOQ

Free downloads and pricing for jOOQ

Free downloads and pricing for jOOQ

Free downloads and pricing for jOOQ

GitHub - jOOQ/jOOQ: jOOQ is the best way to write SQL in Java

GitHub - jOOQ/jOOQ: jOOQ is the best way to write SQL in Java

GitHub - jOOQ/jOOQ: jOOQ is the best way to write SQL in Java

GitHub - jOOQ/jOOQ: jOOQ is the best way to write SQL in Java

GitHub - jOOQ/jOOQ: jOOQ is the best way to write SQL in Java

GitHub - jOOQ/jOOQ: jOOQ is the best way to write SQL in Java