http://www.jooq.org/jooq-meta: jOOQ effectively combines complex SQL, typesafety, source code generation, active records, stored procedures, advanced data types, and Java in a fluent, intuitive DSL. 
public interface org.jooq.meta.CheckConstraintDefinition extends org.jooq.meta.ConstraintDefinition
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.jooq.meta.CheckConstraintDefinition
  super_class: java.lang.Object
{
  public abstract java.lang.String getCheckClause();
    descriptor: ()Ljava/lang/String;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
}
SourceFile: "CheckConstraintDefinition.java"