Package net.sf.basedb.util.formatter

Class LookupFormatter<T>

java.lang.Object
net.sf.basedb.util.formatter.LookupFormatter<T>
All Implemented Interfaces:
Formatter<T>
public class LookupFormatter<T> extends Object implements Formatter<T>
A formatter implementation that uses a map to lookup values from a set of keys. A default value may be specified that is returned in case no lookup has been defined for a given key.
Version:
2.12
Author:
nicklas
Last modified
$Date: 2012-09-14 09:28:35 +0200 (fr, 14 sep 2012) $

  • Field Details

    • map

      private final Map<T,String> map

    • defaultValue

      private String defaultValue

  • Constructor Details

    • LookupFormatter

      public LookupFormatter()
      Create a new lookup formatter

    • LookupFormatter

      public LookupFormatter(Map<? extends T,? extends String> in)
      Create a new lookup formatter and initialise it with the key-value pairs in the given map. The key value pairs are copied to a new map internal to the lookup formatter.
      Parameters:
      in - A map object or null

    • LookupFormatter

      public LookupFormatter(Enumeration<? extends T,? extends String> in)
      Create a new lookup formatter and initialise it with the key-value pairs in the given enumeration. The key value pairs are copied to a new map internal to the lookup formatter.
      Parameters:
      in - An enumeration object or null

  • Method Details

    • format

      public String format(T key)
      Description copied from interface: Formatter
      Format a value by converting it to a string.
      Specified by:
      format in interface Formatter<T>
      Parameters:
      key - The value to format
      Returns:
      A formatted string

    • parseString

      public T parseString(String value)
      Description copied from interface: Formatter
      Parse a string and return a value of the correct type. A null input string should (unless otherwise documented by a specific formatter implementation) be allowed and may return null or any other "default" value.
      Specified by:
      parseString in interface Formatter<T>
      Parameters:
      value - The string to parse
      Returns:
      An object

    • setDefaultValue

      public void setDefaultValue(String defaultValue)
      Set a default value that is returned by the format(Object) method in case no lookup has been specified for a key.

    • getDefaultValue

      public String getDefaultValue()
      Get the default value.

    • put

      public void put(T key, String value)
      Add a lookup key/value pair.
      Parameters:
      key - The key
      value - The value that is returned as the lookup value for the given key

    • putAll

      public void putAll(Map<? extends T,? extends String> in)
      Copy multiple lookup key/value pairs from a map
      Parameters:
      in - The map to copy key/value pair from

    • putAll

      public void putAll(Enumeration<? extends T,? extends String> in)
      Copy multiple lookup key/value pairs from an enumeration.
      Parameters:
      in - The enumeration to copy key/value pair from

    • containsKey

      public boolean containsKey(Object key)
      Checks if a given key has been registered.
      Parameters:
      key - The key
      Returns:
      TRUE if an entry exists for the key, or FALSE otherwise

    • get

      public String get(Object key)
      Get registered lookup value for a given key
      Parameters:
      key - The key
      Returns:
      The registered lookup value, or null if no value has been registered

    • size

      public int size()
      Get the number of registered lookup entries.

    • isEmpty

      public boolean isEmpty()
      Checks if the lookup map is empty or not.

    • clear

      public void clear()
      Remove all registered lookup entries.

    • remove

      public String remove(Object key)
      Remove an entry from the lookup map.
      Parameters:
      key - The key
      Returns:
      The value that was associated with the key