javax.faces.convert.BigIntegerConverter Maven / Gradle / Ivy
/*
* $Id: BigIntegerConverter.java,v 1.14.4.1 2008/12/08 18:07:12 rlubke Exp $
*/
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package javax.faces.convert;
import javax.faces.component.UIComponent;
import javax.faces.context.FacesContext;
import java.math.BigInteger;
/**
* {@link Converter} implementation for
* java.math.BigInteger
values.
*/
public class BigIntegerConverter implements Converter {
// ------------------------------------------------------ Manifest Constants
/**
* The standard converter id for this converter.
*/
public static final String CONVERTER_ID = "javax.faces.BigInteger";
/**
* The message identifier of the {@link javax.faces.application.FacesMessage} to be created if
* the conversion to BigInteger
fails. The message format
* string for this message may optionally include the following
* placeholders:
*
* {0}
replaced by the unconverted value.
* {1}
replaced by an example value.
* {2}
replaced by a String
whose value
* is the label of the input component that produced this message.
*
*/
public static final String BIGINTEGER_ID =
"javax.faces.converter.BigIntegerConverter.BIGINTEGER";
/**
* The message identifier of the {@link javax.faces.application.FacesMessage} to be created if
* the conversion of the BigInteger
value to
* String
fails. The message format string for this message
* may optionally include the following placeholders:
*
* {0}
relaced by the unconverted value.
* {1}
replaced by a String
whose value
* is the label of the input component that produced this message.
*
*/
public static final String STRING_ID =
"javax.faces.converter.STRING";
// ------------------------------------------------------- Converter Methods
/**
* @throws ConverterException {@inheritDoc}
* @throws NullPointerException {@inheritDoc}
*/
public Object getAsObject(FacesContext context, UIComponent component,
String value) {
if (context == null || component == null) {
throw new NullPointerException();
}
// If the specified value is null or zero-length, return null
if (value == null) {
return (null);
}
value = value.trim();
if (value.length() < 1) {
return (null);
}
try {
return (new BigInteger(value));
} catch (NumberFormatException nfe) {
throw new ConverterException(
MessageFactory.getMessage(context,
BIGINTEGER_ID,
value,
"9876",
MessageFactory.getLabel(context,
component)), nfe);
} catch (Exception e) {
throw new ConverterException(e);
}
}
/**
* @throws ConverterException {@inheritDoc}
* @throws NullPointerException {@inheritDoc}
*/
public String getAsString(FacesContext context, UIComponent component,
Object value) {
if (context == null || component == null) {
throw new NullPointerException();
}
// If the specified value is null, return a zero-length String
if (value == null) {
return "";
}
// If the incoming value is still a string, play nice
// and return the value unmodified
if (value instanceof String) {
return (String) value;
}
try {
return (value.toString());
} catch (Exception e) {
throw new ConverterException(
MessageFactory.getMessage(context,
STRING_ID,
value,
MessageFactory.getLabel(context,
component)),
e);
}
}
}