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.ColumnDefinition extends org.jooq.meta.TypedElementDefinition<org.jooq.meta.TableDefinition>, org.jooq.meta.PositionedDefinition
  minor version: 0
  major version: 59
  flags: flags: (0x0601) ACC_PUBLIC, ACC_INTERFACE, ACC_ABSTRACT
  this_class: org.jooq.meta.ColumnDefinition
  super_class: java.lang.Object
{
  public abstract org.jooq.meta.UniqueKeyDefinition getPrimaryKey();
    descriptor: ()Lorg/jooq/meta/UniqueKeyDefinition;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract java.util.List<org.jooq.meta.UniqueKeyDefinition> getUniqueKeys();
    descriptor: ()Ljava/util/List;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: ()Ljava/util/List<Lorg/jooq/meta/UniqueKeyDefinition;>;

  public abstract java.util.List<org.jooq.meta.ForeignKeyDefinition> getForeignKeys();
    descriptor: ()Ljava/util/List;
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    Signature: ()Ljava/util/List<Lorg/jooq/meta/ForeignKeyDefinition;>;

  public abstract boolean isIdentity();
    descriptor: ()Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT

  public abstract boolean isNullable();
    descriptor: ()Z
    flags: (0x0401) ACC_PUBLIC, ACC_ABSTRACT
    RuntimeVisibleAnnotations: 
      java.lang.Deprecated()
}
Signature: Ljava/lang/Object;Lorg/jooq/meta/TypedElementDefinition<Lorg/jooq/meta/TableDefinition;>;Lorg/jooq/meta/PositionedDefinition;
SourceFile: "ColumnDefinition.java"