com.github.ldeitos.validators.BigDecimalComparativeValidator Maven / Gradle / Ivy
package com.github.ldeitos.validators;
import static java.lang.String.format;
import java.lang.annotation.Annotation;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.security.InvalidParameterException;
abstract class BigDecimalComparativeValidator extends MultiTargetValidator {
private final Class[] targetClasses = {Number.class, CharSequence.class};
protected boolean doValidation(Object value) {
BigDecimal n;
Class valueClass = value.getClass();
if(BigDecimal.class.isAssignableFrom(valueClass)){
n = BigDecimal.class.cast(value);
} else if(BigInteger.class.isAssignableFrom(valueClass)){
n = new BigDecimal(BigInteger.class.cast(value));
} else if(CharSequence.class.isAssignableFrom(valueClass)){
try {
n = new BigDecimal(value.toString());
} catch (NumberFormatException e){
throw new InvalidParameterException(
format("Value [%s] invalid to be validated by [%s] validator.", value,
getClass().getName()));
}
} else if(Long.class.isAssignableFrom(valueClass)){
n = new BigDecimal(Long.class.cast(value));
} else {
n = new BigDecimal(Number.class.cast(value).doubleValue());
}
return compareValid(n);
}
@Override
protected Class[] getTargetClasses() {
return targetClasses;
}
protected abstract boolean compareValid(BigDecimal n);
}