com.googlecode.jdbw.metadata
Enum Nullability

java.lang.Object
  java.lang.Enum<Nullability>
      com.googlecode.jdbw.metadata.Nullability

All Implemented Interfaces:

Serializable, Comparable<Nullability>

public enum Nullability
extends Enum<Nullability>

This enum represents the state of table column as to whether it can be assigned the null value or not. This special value has the meaning of marking the absence of a value from the column. If the column is not nullable, it must always have a valid value that conforms to the data type.

Author:

Martin Berglund

See Also:

Column

Enum Constant Summary

NOT_NULLABLE
The column may not contain null values

NULLABLE
The column may contain null values

UNKNOWN
This value means that either the JDBC driver or the database server does not expose information of nullability to us

Method Summary

static Nullability	valueOf(String name) Returns the enum constant of this type with the specified name.
static Nullability[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

NULLABLE

public static final Nullability NULLABLE

The column may contain null values

NOT_NULLABLE

public static final Nullability NOT_NULLABLE

The column may not contain null values

UNKNOWN

public static final Nullability UNKNOWN

This value means that either the JDBC driver or the database server does not expose information of nullability to us

Method Detail

values

public static Nullability[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (Nullability c : Nullability.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static Nullability valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null