/**
* Parse out a list of {@link Definition} from the provided text description.
*
* <p>The format expected here is one definition per line; using the format
* "name=...expression..".
*
* @param definition
* @return List of definition
*/
public static List<Definition> toDefinition(String definition) {
List<Definition> list = new ArrayList<Definition>();
HashSet<String> check = new HashSet<String>();
// clean up cross platform differences of line feed
String[] defs = splitDefinitions(definition);
for (String line : defs) {
int mark = line.indexOf("=");
if (mark != -1) {
String name = line.substring(0, mark).trim();
String expressionDefinition = line.substring(mark + 1).trim();
if (check.contains(name)) {
throw new IllegalArgumentException("Attribute " + name + " defined more than once");
}
Expression expression;
try {
expression = ECQL.toExpression(expressionDefinition);
} catch (CQLException e) {
throw new IllegalArgumentException(
"Unable to parse expression " + name + "=" + expressionDefinition + " " + e, e);
}
Definition def = new Definition();
def.name = name;
def.expression = expression;
list.add(def);
check.add(name); // to catch duplicates!
}
}
return list;
}
