Package acdp.types

Interface StringType

All Superinterfaces:
Type
public interface StringType extends Type
The column type analogon of a Java String type. In contrast to the Java String type this type may be specified such that the null value is forbidden.

Besides the property that decides if the null value is allowed or not, the string type has three additional properties: The storage scheme, the limit and the charset. All have an influence on the maximum number of characters in a string value as follows:

Inrow Storage Scheme

If the chosen charset is a single byte character set then the maximum number of characters in a string is equal to the value of the limit. If the chosen charset is not a single byte character set then the maximum number of characters may be less than the value of the limit.

Outrow Storage Scheme

If the chosen charset is a single byte character set then the maximum number of characters in a string is equal to n = min(256 limit - 1, Integer.MAX_VALUE), e.g., 255 for a limit equal to 1. If the chosen charset is not a single byte character set then the maximum number of characters may be less than n characters.

There should be no need for clients to implement this interface.

Author:
Beat Hörmann

  • Nested Class Summary

    Nested classes/interfaces inherited from interface acdp.types.Type

    Type.Scheme

  • Method Summary

    Modifier and Type
    Method
    Description
    Charset
    charset()
    Returns the character set of this string type.
    int
    limit()
    Returns the limit of this string type.

    Methods inherited from interface acdp.types.Type

    isCompatible, scheme, typeDesc

  • Method Details

    • charset

      Charset charset()
      Returns the character set of this string type.
      Returns:
      The character set, never null.

    • limit

      int limit()
      Returns the limit of this string type.
      Returns:
      The limit, greater than or equal to 1.