com.asakusafw.yaess.core.util

Class PropertiesUtil

java.lang.Object

com.asakusafw.yaess.core.util.PropertiesUtil

public final class PropertiesUtil
extends Object

Utilities for Properties.

Since:

0.2.3

Method Summary

Modifier and Type	Method and Description
static NavigableMap<String,String>	createPrefixMap(Map<?,?> properties, String prefix) Creates property pairs which has the specified prefix their key.
static Set<String>	getChildKeys(Map<?,?> properties, String parentPrefix, String delimitier) Collect the child keys from the properties.

Methods inherited from class java.lang.Object

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

Method Detail

getChildKeys

public static Set<String> getChildKeys(Map<?,?> properties,
                                       String parentPrefix,
                                       String delimitier)

Collect the child keys from the properties. If the parent prefix is "parent." and delimiter is ".", then the child keys are in form of "parent.<child-name>".

Parameters:

properties - target properties

parentPrefix - parent key prefix (may end with delimiter)

delimitier - a generation delimiter token (ordinally, ".")

Returns:

the child keys (includes parent key in head)

Throws:

IllegalArgumentException - if some parameters were 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