common-validator/src/main/java/org/gcube/common/validator/annotations/validators/NotEmptyValidator.java

31 lines
880 B
Java

package org.gcube.common.validator.annotations.validators;
import java.util.Map;
import org.gcube.common.validator.annotations.FieldValidator;
import org.gcube.common.validator.annotations.NotEmpty;
public class NotEmptyValidator implements FieldValidator<NotEmpty>{
public Class<NotEmpty> annotation() {
return NotEmpty.class;
}
public boolean isValid(Object toValidate) {
if (toValidate == null) return false;
if (toValidate.getClass().isArray() ){
return ((Object[])toValidate).length>0;
}else if ( toValidate instanceof Iterable<?>){
return ((Iterable<?>) toValidate).iterator().hasNext();
} else if (toValidate instanceof Map<?,?>){
return ((Map<?,?>) toValidate).size()>0;
} else if (toValidate instanceof String ){
return !((String)toValidate).isEmpty();
} else return true;
}
public String getErrorSuffix() {
return "is empty";
}
}