org.archive.util

Class PropertyUtils

java.lang.Object

org.archive.util.PropertyUtils

public class PropertyUtils
extends Object

Utilities for dealing with Java Properties (incl. System Properties)

Version:

$Date$ $Revision$

Field Summary

Fields

Modifier and Type	Field and Description
protected static String	propRefPattern

Constructor Summary

Constructors

Constructor and Description
PropertyUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static boolean	getBooleanProperty(String key)
static int	getIntProperty(String key, int fallback)
static String	getPropertyOrNull(String key)
static String	interpolateWithProperties(String original) Given a string which may contain expressions of the form ${key}, replace each expression with the value corresponding to the given key in System Properties.
static String	interpolateWithProperties(String original, Properties... props) Given a string which may contain expressions of the form ${key}, replace each expression with the value corresponding to the given key in the supplied Properties instance.

Methods inherited from class java.lang.Object

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

Field Detail

propRefPattern

protected static String propRefPattern

Constructor Detail

PropertyUtils

public PropertyUtils()

Method Detail

getPropertyOrNull

public static String getPropertyOrNull(String key)

Parameters:

key - Property key.

Returns:

Named property or null if the property is null or empty.

getBooleanProperty

public static boolean getBooleanProperty(String key)

Parameters:

key - Property key.

Returns:

Boolean value or false if null or unreadable.

getIntProperty

public static int getIntProperty(String key,
                 int fallback)

Parameters:

key - Key to use looking up system property.

fallback - If no value found for passed key, return fallback.

Returns:

Value of property or fallback.

interpolateWithProperties

public static String interpolateWithProperties(String original)

Given a string which may contain expressions of the form ${key}, replace each expression with the value corresponding to the given key in System Properties. If no value is present, the expression is replaced with the empty-string.

Parameters:

original - String

properties - Properties to try in order; first value found (if any) is used

Returns:

modified String

interpolateWithProperties

public static String interpolateWithProperties(String original,
                               Properties... props)

Given a string which may contain expressions of the form ${key}, replace each expression with the value corresponding to the given key in the supplied Properties instance. If no value is present, the expression is replaced with the empty-string.

Parameters:

original - String

props - Properties to try in order; first value found (if any) is used

Returns:

modified String