org.apache.cayenne.exp.parser.ParserUtil Maven / Gradle / Ivy
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package org.apache.cayenne.exp.parser;
import org.apache.cayenne.util.Util;
class ParserUtil {
static Object makeEnum(String enumPath) throws ParseException {
if (enumPath == null) {
throw new ParseException("Null 'enumPath'");
}
int dot = enumPath.lastIndexOf('.');
if (dot <= 0 || dot == enumPath.length() - 1) {
throw new ParseException("Invalid enum path: " + enumPath);
}
String className = enumPath.substring(0, dot);
String enumName = enumPath.substring(dot + 1);
Class enumClass;
try {
enumClass = Util.getJavaClass(className);
}
catch (ClassNotFoundException e) {
throw new ParseException("Enum class not found: " + className);
}
if (!enumClass.isEnum()) {
throw new ParseException("Specified class is not an enum: " + className);
}
try {
return Enum.valueOf(enumClass, enumName);
}
catch (IllegalArgumentException e) {
throw new ParseException("Invalid enum path: " + enumPath);
}
}
}