Hi Mike, Am 01.02.2011 18:35, schrieb Mike Power:
Curiosity question I am seeing the ConfigurationConverter behave differently depending on if I added an int or a string to a configuration object.Consider the following code: 01 Configuration confInt = new BaseConfiguration(); 02 Configuration confString = new BaseConfiguration(); 03 confInt.setProperty("port", 80); 04 confString.setProperty("port", "80"); 05 assertEquals(80, confInt.getInt("port")); 06 assertEquals(80, confString.getInt("port")); 07 08 Properties propString = ConfigurationConverter.getProperties(confString); 09 assertEquals("80", propString.getProperty("port")); 10 11 Properties propInt = ConfigurationConverter.getProperties(confInt); 12 13 assertEquals("80", propInt.getProperty("port")); As you can see the code is basically duplicated one set uses an int the other set uses a String. However an exception blows out of line 11. 'port' doesn't map to a List object: 80, a java.lang.Integer org.apache.commons.configuration.ConversionException: 'port' doesn't map to a List object: 80, a java.lang.Integer at org.apache.commons.configuration.AbstractConfiguration.getList(AbstractConfiguration.java:1144) at org.apache.commons.configuration.AbstractConfiguration.getList(AbstractConfiguration.java:1109) at org.apache.commons.configuration.ConfigurationConverter.getProperties(ConfigurationConverter.java:116) It seems for some reason since I used an int, the ConfigurationConverter wants to treat the property as a list. However since I actually put an integer into the property it errors out since it can not convert a integer to a list. This behavior seems odd. Why does it do this? Mike Power
the code responsible for this odd behavior is actually in AbstractConfiguration.getList(). Here a single string value is treated in a special way: it is returned as single element of a newly created list. However, for other scalar types such a conversion is not performed.
This code is pretty old, I guess it is in there from the very beginning. Probably it was just forgotten that a configuration could store other types of values, too.
If you like, you can add a bug report in Jira. The current behavior is probably not desired.
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