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/*
@VaadinApache2LicenseForJavaFiles@
*/
package com.vaadin.data.util.converter;
import java.text.NumberFormat;
import java.text.ParsePosition;
import java.util.Locale;
public class IntegerToStringConverter implements Converter<Integer, String> {
protected NumberFormat getFormatter(Locale locale) {
if (locale == null) {
return NumberFormat.getIntegerInstance();
} else {
return NumberFormat.getIntegerInstance(locale);
}
}
public Integer convertFromTargetToSource(String value, Locale locale) {
if (value == null) {
return null;
}
// Remove extra spaces
value = value.trim();
// Parse and detect errors. If the full string was not used, it is
// an error.
ParsePosition parsePosition = new ParsePosition(0);
Number parsedValue = getFormatter(locale).parse(value, parsePosition);
if (parsePosition.getIndex() != value.length()) {
throw new ConversionException("Could not convert '" + value
+ "' to " + getTargetType().getName());
}
if (parsedValue == null) {
// Convert "" to null
return null;
}
return parsedValue.intValue();
}
public String convertFromSourceToTarget(Integer value, Locale locale) {
if (value == null) {
return null;
}
return getFormatter(locale).format(value);
}
public Class<Integer> getSourceType() {
return Integer.class;
}
public Class<String> getTargetType() {
return String.class;
}
}
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