Hi all guys,
I've been developing a set of TypeConverters to convert values read
from properties files. The questions I'd ask are:
1) Is i possible to override the default TypeConverter? I yes, how? I
need, for example, override the converter for boolean values, since in
my con files the 'true' value can be expressed as "true", "yes", "y",
"on", "1"; even if I can register my custom converter, when trying to
convert to boolean, guice rises the following error:
Multiple converters can convert '0'
2) Since I need to manage also arrays of types, where values are CSV,
I wrote this abstract converter able to converts arrays; it works for
java.lang.Boolean[] but not for boolean[], rising the following error:
Type mismatch converting 'true, no' to boolean[] using
booleanconver...@481958 which matches only(boolean[])[...] Converter
returned [...@659078. while locating boolean[]
follows class implementation; what's wrong?
Thanks in advance, best regards,
Simo
abstract class AbstractConverter implements TypeConverter {
private static final String DEFAULT_DELIMITER = ",";
public final Object convert(String value, TypeLiteral<?> toType) {
if (GenericArrayType.class.isInstance(toType.getType())) {
StringTokenizer tokenizer = new StringTokenizer(value,
DEFAULT_DELIMITER);
Class<?> arrayType =
MoreTypes.getRawType(((GenericArrayType)
toType.getType()).getGenericComponentType());
Object array = Array.newInstance(arrayType,
tokenizer.countTokens());
int i = 0;
while (tokenizer.hasMoreTokens()) {
String token = tokenizer.nextToken().trim();
Array.set(array, i++, this.simpleConvert(token, arrayType));
}
return array;
}
return this.simpleConvert(value,
MoreTypes.getRawType(toType.getType()));
}
protected abstract Object simpleConvert(String value, Class<?> toType);
}
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http://people.apache.org/~simonetripodi/
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