com.asakusafw.windgate.core.util

Class PropertiesUtil

java.lang.Object

com.asakusafw.windgate.core.util.PropertiesUtil

public final class PropertiesUtil
extends Object

Utilities for Properties.

Since:

0.2.2

Method Summary

Modifier and Type	Method and Description
static void	checkAbsentKey(Properties properties, String key) Checks whether the specified key is absent in the properties.
static void	checkAbsentKeyPrefix(Properties properties, String keyPrefix) Checks whether keys with the specified prefix are absent in the properties.
static NavigableMap<String,String>	createPrefixMap(Map<?,?> properties, String prefix) Creates property pairs which has the specified prefix their key.
static void	removeKeyPrefix(Properties properties, String prefix) Removes entries which have the specified prefix in their key.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

removeKeyPrefix

public static void removeKeyPrefix(Properties properties,
                                   String prefix)

Removes entries which have the specified prefix in their key.

Parameters:

properties - target properties

prefix - target prefix

Throws:

IllegalArgumentException - if any parameter is null

createPrefixMap

public static NavigableMap<String,String> createPrefixMap(Map<?,?> properties,
                                                          String prefix)

Creates property pairs which has the specified prefix their key. The created map is lexicographic ordered by each key name, and trimmed the specified prefix.

Parameters:

properties - target properties

prefix - target prefix

Returns:

the created map

Throws:

IllegalArgumentException - if any parameter is null

checkAbsentKey

public static void checkAbsentKey(Properties properties,
                                  String key)

Checks whether the specified key is absent in the properties.

Parameters:

properties - target properties

key - target key

Throws:

IllegalArgumentException - if the key exists in the properties, or any parameter is null

checkAbsentKeyPrefix

public static void checkAbsentKeyPrefix(Properties properties,
                                        String keyPrefix)

Checks whether keys with the specified prefix are absent in the properties.

Parameters:

properties - target properties

keyPrefix - target key prefix

Throws:

IllegalArgumentException - if the such key exists in the properties, or any parameter is null