javax.validation.constraints.DecimalMin#value ( )源码实例Demo

/**
 * Determine a number type's minimum (inclusive) value.
 *
 * @param member the field or method to check
 * @return specified inclusive minimum value (or null)
 * @see Min
 * @see DecimalMin
 * @see PositiveOrZero
 */
protected BigDecimal resolveNumberInclusiveMinimum(MemberScope<?, ?> member) {
    Min minAnnotation = this.getAnnotationFromFieldOrGetter(member, Min.class, Min::groups);
    if (minAnnotation != null) {
        return new BigDecimal(minAnnotation.value());
    }
    DecimalMin decimalMinAnnotation = this.getAnnotationFromFieldOrGetter(member, DecimalMin.class, DecimalMin::groups);
    if (decimalMinAnnotation != null && decimalMinAnnotation.inclusive()) {
        return new BigDecimal(decimalMinAnnotation.value());
    }
    PositiveOrZero positiveAnnotation = this.getAnnotationFromFieldOrGetter(member, PositiveOrZero.class, PositiveOrZero::groups);
    if (positiveAnnotation != null) {
        return BigDecimal.ZERO;
    }
    return null;
}
 

@Override
public PropertyModel postProcessInternal(PropertyModel propertyModel) {
    DecimalMin minAnno = propertyModel.getPropertyItem().getAnnotation(DecimalMin.class);
    if (minAnno == null) return propertyModel;

    String hint = "";
    if (minAnno.inclusive())
        hint += " (值大于等于" + minAnno.value() + ")";
    else
        hint += " (值大于" + minAnno.value() + ")";
    propertyModel.setDescription(
            TextUtils.combine(propertyModel.getDescription(), hint)
    );
    return propertyModel;
}
 

/**
 * Determine a number type's minimum (exclusive) value.
 *
 * @param member the field or method to check
 * @return specified exclusive minimum value (or null)
 * @see DecimalMin
 * @see Positive
 */
protected BigDecimal resolveNumberExclusiveMinimum(MemberScope<?, ?> member) {
    DecimalMin decimalMinAnnotation = this.getAnnotationFromFieldOrGetter(member, DecimalMin.class, DecimalMin::groups);
    if (decimalMinAnnotation != null && !decimalMinAnnotation.inclusive()) {
        return new BigDecimal(decimalMinAnnotation.value());
    }
    Positive positiveAnnotation = this.getAnnotationFromFieldOrGetter(member, Positive.class, Positive::groups);
    if (positiveAnnotation != null) {
        return BigDecimal.ZERO;
    }
    return null;
}
 

@Override
public void initialize(DecimalMin minValue) {
    this.minValue = new BigDecimal(minValue.value() );
    this.inclusive = minValue.inclusive();
}