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package com.sos.scheduler.engine.kernel.command;
import com.sos.scheduler.engine.kernel.SchedulerException;
import java.util.ArrayList;
import java.util.List;
import org.w3c.dom.Element;
import static com.sos.scheduler.engine.kernel.util.XmlUtils.*;
public class CommandDispatcher {
private final DispatchingCommandExecutor executor;
private final DispatchingXmlCommandParser parser;
private final DispatchingResultXmlizer resultXmlizer;
// public CommandDispatcher(Iterable<CommandSuite> suites) {
// CommandSuite combinedSuite = CommandSuite.of(suites);
// executor = new DispatchingCommandExecutor(combinedSuite.getExecutors());
// parser = new DispatchingXmlCommandParser(combinedSuite.getParsers());
// resultXmlizer = new DispatchingResultXmlizer(combinedSuite.getResultXmlizer());
// }
public CommandDispatcher(Iterable<CommandHandler> handlers) {
List<CommandExecutor> executors = new ArrayList<CommandExecutor>();
List<CommandXmlParser> parsers = new ArrayList<CommandXmlParser>();
List<ResultXmlizer> xmlizers = new ArrayList<ResultXmlizer>();
for (CommandHandler handler: handlers) {
if (handler instanceof CommandExecutor)
executors.add((CommandExecutor)handler);
else
if (handler instanceof CommandXmlParser)
parsers.add((CommandXmlParser)handler);
else
if (handler instanceof ResultXmlizer)
xmlizers.add((ResultXmlizer)handler);
else
throw new SchedulerException("CommandDispatcher " + handler);
}
executor = new DispatchingCommandExecutor(executors);
parser = new DispatchingXmlCommandParser(parsers);
resultXmlizer = new DispatchingResultXmlizer(xmlizers);
}
public final String executeXml(String xml) {
Command command = parse(loadXml(xml).getDocumentElement());
Result result = execute(command);
return toXml(elementOfResult(result));
}
public final Result execute(Command c) {
return executor.execute(c);
}
public final Command parse(Element e) {
return parser.parse(e);
}
public final Element elementOfResult(Result r) {
return resultXmlizer.toElement(r);
}
}