Module org.jooq

Package org.jooq

Annotation Interface Allow

@Target({METHOD,CONSTRUCTOR,TYPE,PACKAGE})
@Retention(RUNTIME)
@Documented
@Inherited
public @interface Allow

Allow a set of SQLDialect to be supported by any jOOQ statement in the scope of this annotation.

This annotation can be used at the use-site of jOOQ API at any given scope ElementType.PACKAGE, ElementType.TYPE, ElementType.METHOD in order to specify that the given scope allows ANY of the supplied SQLDialect to be supported by all usage of jOOQ API within the scope. For example:

 // Allow only MYSQL or ORACLE dialect support to be used within the class scope
 @Allow(MYSQL, ORACLE)
 public class MySQLAndOracleDAO {

     // Allow rule from class applies to this method
     public void mysqlAndOracleMethod() {
         DSL.using(configuration)
            .insertInto(TABLE, TABLE.COLUMN)
            .values(1)
            // This type checks as it works on both MySQL and Oracle
            .onDuplicateKeyUpdate()
            .set(TABLE.COLUMN, 2)
            .execute();
     }

     // Refine class Allow rule with additional requirement
     @Require(ORACLE)
     public void oracleOnlyMethod() {
         DSL.using(configuration)
            .mergeInto(TABLE)
            .using(selectOne())
            .on(TABLE.COLUMN.eq(1))
            .whenMatchedThenUpdate()
            .set(TABLE.COLUMN, 2)
            .whenNotMatchedThenInsert(TABLE.COLUMN)
            .values(1)
            .execute();
     }
 }
 

Type checking for these annotations can be supplied by org.jooq.checker.SQLDialectChecker from the jOOQ-checker module.

Rules:

• In the absence of any Allow annotation, no jOOQ API usage is allowed.
• The combination of all Allow annotations and of the inner-most Require annotation is applied for any given scope.
• Nested packages are not creating nested scopes.
• If a versioned SQLDialect is allowed (rather than a SQLDialect.family()), then the allowed version, all of its SQLDialect.predecessor(), and its SQLDialect.family() are allowed.

Apart from the above main purpose, the Allow annotation also serves as a semantic namespace for other annotations, such as Allow.PlainSQL

Author:

Lukas Eder

See Also:

Require

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	Allow.PlainSQL	This annotation allows Allow.PlainSQL API usage within the scope of where it is placed.

Optional Element Summary

Optional Elements

Modifier and Type	Optional Element	Description
SQLDialect[]	value	A list of jOOQ SQLDialect which are required on any jOOQ API method that is annotated with Support.

Element Details

value

SQLDialect[] value

A list of jOOQ SQLDialect which are required on any jOOQ API method that is annotated with Support.

Default:

{ACCESS, ASE, AURORA_MYSQL, AURORA_POSTGRES, BIGQUERY, COCKROACHDB, DB2, EXASOL, HANA, INFORMIX, INGRES, MEMSQL, ORACLE, REDSHIFT, SNOWFLAKE, SQLDATAWAREHOUSE, SQLSERVER, SYBASE, TERADATA, VERTICA, CUBRID, DEFAULT, SQL99, DERBY, FIREBIRD, H2, HSQLDB, IGNITE, MARIADB, MYSQL, POSTGRES, SQLITE}