[TAP5-1947] BigDecimal Validator

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Incomplete
• Affects Version/s: 5.3.3
• Component/s: tapestry-core
• Labels: bulk-close-candidate
• Assignee: Unassigned
• Reporter: George Christman
• Created: 05/Jun/12 17:48
• Updated: 22/Aug/16 06:47
• Resolved: 22/Aug/16 06:47

Description

Tapestry should offer the ability to validate BigDecimal max length's for currency/amounts. I'm donating the following code which validates maxScale and maxPrecision. Unfortunately, I haven't written anything to handle the clientside validation.

//app.properties

maximum-precision=You may provide at most %d numbers for %s.
maximum-scale=You may provide at most %d decimal digits for %s.

//MaxScale

public class MaxScale extends AbstractValidator<Integer, BigDecimal> {

public MaxScale()

{ super(Integer.class, BigDecimal.class, "maximum-scale"); }

@Override
public void validate(Field field, Integer constraintValue, MessageFormatter formatter, BigDecimal value)
throws ValidationException

{ if (value.scale() > constraintValue) throw new ValidationException(buildMessage(formatter, field, constraintValue)); }

private String buildMessage(MessageFormatter formatter, Field field, Integer constraintValue)

{ return formatter.format(constraintValue, field.getLabel()); }

@Override
public void render(Field field, Integer constraintValue, MessageFormatter formatter, MarkupWriter writer,
FormSupport formSupport) { formSupport.addValidation(field, "maxscale", buildMessage(formatter, field, constraintValue), constraintValue); }

}

//MaxPrecision

public class MaxPrecision extends AbstractValidator<Integer, BigDecimal> {

public MaxPrecision() { super(Integer.class, BigDecimal.class, "maximum-precision"); }

@Override
public void validate(Field field, Integer constraintValue, MessageFormatter formatter, BigDecimal value)
throws ValidationException
{ if (value.precision() > constraintValue) throw new ValidationException(buildMessage(formatter, field, constraintValue)); }

private String buildMessage(MessageFormatter formatter, Field field, Integer constraintValue) { return formatter.format(constraintValue, field.getLabel()); }

@Override
public void render(Field field, Integer constraintValue, MessageFormatter formatter, MarkupWriter writer,
FormSupport formSupport)

{ formSupport.addValidation(field, "maxprecision", buildMessage(formatter, field, constraintValue), constraintValue); }

}

//AppModule

@SuppressWarnings("rawtypes")
public static void contributeFieldValidatorSource(MappedConfiguration<String, Validator> configuration)

{ configuration.add("maxScale", new MaxScale()); configuration.add("maxPrecision", new MaxPrecision()); }