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Date: Mon, 21 Mar 2005 15:21:10 +0100
Message-Id: <200503211421.j2LELAAo023847@ajax.apache.org>
From: bugzilla@apache.org
To: commons-dev@jakarta.apache.org
Subject: DO NOT REPLY [Bug 34099]  -
    [configuration] Use beanutils for conversions

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http://issues.apache.org/bugzilla/show_bug.cgi?id=34099


------- Additional Comments From ittayd@qlusters.com  2005-03-21 15:21 -------
note that for enums, you write the converter only once for all your enums:

public class EnumConverter implements Converter {
    public Object convert(Class classs, Object value) {
        if (value == null) {
            throw new ConversionException("No value specified");
        }

        if (value.getClass() == classs) {
            return value;
        }

        String strValue = value.toString();

        try {
            return EnumUtils.getEnum(classs, strValue);
        } catch (Exception e) {
            throw new ConversionException("Could not convert " + strValue, e);
        }
    }
}


then, your code is getProperty("foo", MyEnum.class) and you get the enum.

also, the enum is the obvious example. generally speaking, i think that writing:
public class Foo {
    private static void Bar b = Config.getConfiguration().getProperty("foo.bar", 
Bar.class);
}

is nicer than:
    private static void Bar b = Bar.fromString(Config.getConfiguration().
getProperty("foo.bar"));

moreover, note that the latter form means the property must be a string, but 
what if the property can be kept as Bar (e.g., a blob in the DB) then, 
getProperty("foo.bar", Bar.class) is more suitable, since it will just return 
the property as-is.

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