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package pablotron.luigi.actions;
import java.util.Map;
import pablotron.luigi.actions.Action;
import pablotron.luigi.FilterReference;
import pablotron.luigi.Filter;
import pablotron.luigi.LuigiError;
public final class FilterAction implements Action {
private final String key;
private final FilterReference filters[];
public FilterAction(final String key, final FilterReference filters[]) {
this.key = key;
this.filters = filters;
}
public String run(
Map<String, Filter.Handler> filters,
Map<String, String> args
) throws LuigiError {
// check for key
if (!args.containsKey(key))
throw new LuigiError("unknown key: " + key);
// reduce value to result
String r = args.get(key);
for (int i = 0, l = this.filters.length; i < l; i++) {
// get/check filter
Filter.Handler f = filters.get(this.filters[i].name);
if (f == null)
throw new LuigiError("unknown filter: " + this.filters[i].name);
// run filter
r = f.filter(r, this.filters[i].args, args);
}
// return result
return r;
}
};
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