blob: 9d318b86bada55790609e2b2cfb4082ac9d1fb79 [file] [log] [blame]
package aQute.lib.data;
import java.lang.reflect.*;
import java.util.*;
import java.util.regex.*;
public class Data {
public static String validate(Object o) throws Exception {
StringBuilder sb = new StringBuilder();
Formatter formatter = new Formatter(sb);
Field fields[] = o.getClass().getFields();
for (Field f : fields) {
Validator patternValidator = f.getAnnotation(Validator.class);
Numeric numericValidator = f.getAnnotation(Numeric.class);
AllowNull allowNull = f.getAnnotation(AllowNull.class);
Object value = f.get(o);
if (value == null) {
if (allowNull == null)
formatter.format("Value for %s must not be null%n", f.getName());
} else {
if (patternValidator != null) {
Pattern p = Pattern.compile(patternValidator.value());
Matcher m = p.matcher(value.toString());
if (!m.matches()) {
String reason = patternValidator.reason();
if (reason.length() == 0)
formatter.format("Value for %s=%s does not match pattern %s%n", f.getName(), value,
patternValidator.value());
else
formatter.format("Value for %s=%s %s%n", f.getName(), value, reason);
}
}
if (numericValidator != null) {
if (o instanceof String) {
try {
o = Double.parseDouble((String) o);
}
catch (Exception e) {
formatter.format("Value for %s=%s %s%n", f.getName(), value, "Not a number");
}
}
try {
Number n = (Number) o;
long number = n.longValue();
if (number >= numericValidator.min() && number < numericValidator.max()) {
formatter.format("Value for %s=%s not in valid range (%s,%s]%n", f.getName(), value,
numericValidator.min(), numericValidator.max());
}
}
catch (ClassCastException e) {
formatter.format("Value for %s=%s [%s,%s) is not a number%n", f.getName(), value,
numericValidator.min(), numericValidator.max());
}
}
}
}
if (sb.length() == 0)
return null;
if (sb.length() > 0)
sb.delete(sb.length() - 1, sb.length());
return sb.toString();
}
public static void details(Object data, Appendable out) throws Exception {
Field fields[] = data.getClass().getFields();
Formatter formatter = new Formatter(out);
for (Field f : fields) {
String name = f.getName();
name = Character.toUpperCase(name.charAt(0)) + name.substring(1);
formatter.format("%-40s %s%n", name, f.get(data));
}
}
}