org.apache.avalon.framework.configuration

Class ConfigurationUtil

java.lang.Object

org.apache.avalon.framework.configuration.ConfigurationUtil

public class ConfigurationUtil
extends java.lang.Object

This class has a bunch of utility methods to work with configuration objects.

Since:

4.1.4

Version:

$Id: ConfigurationUtil.java 30977 2004-07-30 03:57:54 -0500 (Fri, 30 Jul 2004) niclas $

Author:

Avalon Development Team

Constructor Summary

Constructors

Modifier	Constructor and Description
private	ConfigurationUtil() Private constructor to block instantiation.

Method Summary

Methods

Modifier and Type	Method and Description
private static boolean	areAttributesEqual(Configuration c1, Configuration c2) Return true if the attributes of both configurations are equal.
private static boolean	areChildrenEqual(Configuration c1, Configuration c2) Return true if the children of both configurations are equal.
private static boolean	areValuesEqual(Configuration c1, Configuration c2) Return true if the values of two configurations are equal.
private static org.w3c.dom.Element	createElement(org.w3c.dom.Document document, Configuration configuration) Create an DOM Element from a Configuration object.
static boolean	equals(Configuration c1, Configuration c2) Test to see if two Configuration's can be considered the same.
private static boolean	findMatchingChild(Configuration c, java.util.ArrayList matchAgainst) Return true if find a matching child and remove child from list.
static Configuration	toConfiguration(org.w3c.dom.Element element) Convert a DOM Element tree into a configuration tree.
static org.w3c.dom.Element	toElement(Configuration configuration) Convert a configuration tree into a DOM Element tree.
static java.lang.String	toString(Configuration configuration) Serialize the configuration object to a String.

Methods inherited from class java.lang.Object

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

Constructor Detail

ConfigurationUtil

private ConfigurationUtil()

Private constructor to block instantiation.

Method Detail

toConfiguration

public static Configuration toConfiguration(org.w3c.dom.Element element)

Convert a DOM Element tree into a configuration tree.

Parameters:

element - the DOM Element

Returns:

the configuration object

toElement

public static org.w3c.dom.Element toElement(Configuration configuration)

Convert a configuration tree into a DOM Element tree.

Parameters:

configuration - the configuration object

Returns:

the DOM Element

toString

public static java.lang.String toString(Configuration configuration)

Serialize the configuration object to a String. If an exception occurs, the exception message will be returned instead. This method is intended to aid debugging; DefaultConfigurationSerializer.serialize(Configuration) lets the caller handle exceptions.

Parameters:

configuration - Configuration instance to serialize

Returns:

a non-null String representing the Configuration, or an error message.

Since:

12 March, 2003

equals

public static boolean equals(Configuration c1,
             Configuration c2)

Test to see if two Configuration's can be considered the same. Name, value, attributes and children are test. The order of children is not taken into consideration for equality.

Parameters:

c1 - Configuration to test

c2 - Configuration to test

Returns:

true if the configurations can be considered equals

areChildrenEqual

private static boolean areChildrenEqual(Configuration c1,
                       Configuration c2)

Return true if the children of both configurations are equal.

Parameters:

c1 - configuration1

c2 - configuration2

Returns:

true if the children of both configurations are equal.

findMatchingChild

private static boolean findMatchingChild(Configuration c,
                        java.util.ArrayList matchAgainst)

Return true if find a matching child and remove child from list.

Parameters:

c - the configuration

matchAgainst - the list of items to match against

Returns:

true if the found.

areAttributesEqual

private static boolean areAttributesEqual(Configuration c1,
                         Configuration c2)

Return true if the attributes of both configurations are equal.

Parameters:

c1 - configuration1

c2 - configuration2

Returns:

true if the attributes of both configurations are equal.

areValuesEqual

private static boolean areValuesEqual(Configuration c1,
                     Configuration c2)

Return true if the values of two configurations are equal.

Parameters:

c1 - configuration1

c2 - configuration2

Returns:

true if the values of two configurations are equal.

createElement

private static org.w3c.dom.Element createElement(org.w3c.dom.Document document,
                                Configuration configuration)

Create an DOM Element from a Configuration object.

Parameters:

document - the DOM document

configuration - the configuration to convert

Returns:

the DOM Element