net.dpml.util
Class Util

java.lang.Object
  net.dpml.util.Util

public final class Util
extends Object

Utility class supporting operations related to property retrival.

Version:

1.0.3

Author:

Digital Product Meta Library

Method Summary

static String	getProperty(Properties props, String key, String def) Return the value of a property.
static String[]	readListFile(URL listFile) Read a file and return the list of lines in an array of strings.
static Properties	readProps(URL propsUrl) Read a set of properties from a property file specificed by a url.
static Properties	readProps(URL propsUrl, boolean resolve) Read a set of properties from a property file specificed by a url.
static String	resolveProperty(Properties props, String value) Resolve symbols in a supplied value against supplied known properties.

Methods inherited from class java.lang.Object

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

Method Detail

readProps

public static Properties readProps(URL propsUrl)
                            throws IOException

Read a set of properties from a property file specificed by a url. Property files may reference symbolic properties in the form ${name}.

Parameters:

propsUrl - the url of the property file to read

Returns:

the resolved properties

Throws:

IOException - if an io error occurs

readProps

public static Properties readProps(URL propsUrl,
                                   boolean resolve)
                            throws IOException

Read a set of properties from a property file specificed by a url. Property files may reference symbolic properties in the form ${name}.

Parameters:

propsUrl - the url of the property file to read

resolve - if TRUE apply property symbol resolution

Returns:

the resolved properties

Throws:

IOException - if an io error occurs

resolveProperty

public static String resolveProperty(Properties props,
                                     String value)

Resolve symbols in a supplied value against supplied known properties.

Parameters:

props - a set of know properties

value - the string to parse for tokens

Returns:

the resolved string

getProperty

public static String getProperty(Properties props,
                                 String key,
                                 String def)

Return the value of a property.

Parameters:

props - the property file

key - the property key to lookup

def - the default value

Returns:

the resolve value

readListFile

public static String[] readListFile(URL listFile)
                             throws IOException

Read a file and return the list of lines in an array of strings.

Parameters:

listFile - the url to read from

Returns:

the lines

Throws:

IOException - if a read error occurs