Class TStringType

java.lang.Object
com.mckoi.database.TType
com.mckoi.database.TStringType
All Implemented Interfaces:
Serializable

public final class TStringType extends TType
An implementation of TType for a String.
Author:
Tobias Downer
See Also:
  • Constructor Details

    • TStringType

      public TStringType(int sql_type, int max_size, Locale locale, int strength, int decomposition)
      Constructs a type with the given sql_type value, the maximum size, and the locale of the string. Note that the 'sql_type' MUST be a string SQL type.

      Note that a string type may be constructed with a NULL locale which means strings are compared lexicographically.

    • TStringType

      public TStringType(int sql_type, int max_size, String locale_str, int strength, int decomposition)
      Constructs a type with the given sql_type value, the maximum size, and the locale of the string. Note that the 'sql_type' MUST be a string SQL type.

      Note that a string type may be constructed with a NULL locale which means strings are compared lexicographically. The string locale is formated as [2 char language][2 char country][rest is variant]. For example, US english would be 'enUS', French would be 'fr' and Germany would be 'deDE'.

    • TStringType

      public TStringType(int sql_type, int max_size, String locale_str)
      Constructor without strength and decomposition that sets to default levels.
  • Method Details

    • getMaximumSize

      public int getMaximumSize()
      Returns the maximum size of the string (-1 is don't care).
    • getStrength

      public int getStrength()
      Returns the strength of this string type as defined in java.text.Collator.
    • getDecomposition

      public int getDecomposition()
      Returns the decomposition of this string type as defined in java.text.Collator.
    • getLocale

      public Locale getLocale()
      Returns the locale of the string.
    • getLocaleString

      public String getLocaleString()
      Returns the locale information as a formatted string.

      Note that a string type may be constructed with a NULL locale which means strings are compared lexicographically. The string locale is formated as [2 char language][2 char country][rest is variant]. For example, US english would be 'enUS', French would be 'fr' and Germany would be 'deDE'.

    • comparableTypes

      public boolean comparableTypes(TType type)
      For strings, the locale must be the same for the types to be comparable. If the locale is not the same then they are not comparable. Note that strings with a locale of null can be compared with any other locale. So this will only return false if both types have different (but defined) locales.
      Specified by:
      comparableTypes in class TType
    • compareObs

      public int compareObs(Object ob1, Object ob2)
      Description copied from class: TType
      Compares two objects that are logically comparable under this type. Returns 0 if the values are equal, >1 if ob1 is greater than ob2, and <1 if ob1 is less than ob2. It is illegal to pass NULL values for ob1 or ob2 into this method.
      Specified by:
      compareObs in class TType
    • calculateApproximateMemoryUse

      public int calculateApproximateMemoryUse(Object ob)
      Description copied from class: TType
      Calculates the approximate memory usage of an object of this type in bytes.
      Specified by:
      calculateApproximateMemoryUse in class TType
    • javaClass

      public Class javaClass()
      Description copied from class: TType
      Returns the Java Class that is used to represent this type of object. For example, string types would return String.class.
      Specified by:
      javaClass in class TType