CODEWITHSUNDEEP
javajsfprimefaces
Alessandro
Alessandro

Reputation: 4472

NumberFormatException with custom type on primefaces's InputNumber

I've created a kind of custom type on a JSF project using PrimeFaces. I'd use this type with PrimeFaces's inputNumber but I get the error:

NumberFormatException class java.lang.NumberFormatException java.lang.NumberFormatException at java.math.BigDecimal.(BigDecimal.java:550) at java.math.BigDecimal.(BigDecimal.java:383) at java.math.BigDecimal.(BigDecimal.java:806) at org.primefaces.component.inputnumber.InputNumberRenderer.formatForPlugin(InputNumberRenderer.java:292) at org.primefaces.component.inputnumber.InputNumberRenderer.encodeScript(InputNumberRenderer.java:231) at org.primefaces.component.inputnumber.InputNumberRenderer.encodeEnd(InputNumberRenderer.java:124)

In short, I've created a class MyCurrency that stores a double and extends ValueExpression, like the following:

public final class MyCurrency extends ValueExpression implements Comparable<MyCurrency>, Serializable {

private Double value;

    private MyCurrency(final Double value) {
        this.value = value;
    }

    public Double getValue() {
        return this.value;
    }

    public Long longValue() {
        return value.longValue();
    }

    @Override
    public int compareTo(final MyCurrency o) {
        return this.getValue().compareTo(o.getValue());
    }

    @Override
    public Object getValue(final ELContext context) {
        return new BigDecimal(this.value);
    }

    @Override
    public void setValue(final ELContext context, final Object value) {
        this.value = new Builder().withValue(value).build().value;
    }

    public static class Builder {

        private Double value;

        public Builder withValue(final Double value) {
            this.value = value;
            return this;
        }

        public Builder withValue(final Long value) {
            this.value = new Double(value);
            return this;
        }

        public Builder withValue(final Object value) {
            this.value = Double.parseDouble(value.toString());
            return this;
        }

        public MyCurrency build() {
            return new MyCurrency(this.value);
        }

    }
}

And in my bean I've a property with type MyCurrency.

When I use it with an inputNumber:

<p:inputNumber id="importoDa" value="#{myBean.myAmount}" />

I get the error [NumberFormatException].

Any help, please?

Upvotes: 1

Views: 547

Answers (1)

EleazarAG
EleazarAG

Reputation: 105

Not sure if it's a solution for what you are asking, but it seems that you are trying to format the input of your inputNumber as currency an compare it's value to another object. It might be easier to store only the double or BigDecimal value in your bean and format it in the view as currency. You can achieve this using the symbol and decimalPlaces properties of the <p:inputNumber> tag this way:

<p:inputNumber id="importoDa" value="#{myBean.myAmount}" symbol="$" decimalPlaces="2" />

Hope it helps :)

Upvotes: 3

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