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package bjc.utils.cli;
import org.eclipse.jdt.annotation.Nullable;
/**
* Generic command implementation
*
* @author ben
*
*/
public class GenericCommand implements ICommand {
// The behavior for invoking the command
private ICommandHandler handler;
// The help for the command
private ICommandHelp help;
/**
* Create a new generic command
*
* @param handler
* The handler to use for the command
* @param description
* The description of the command. May be null
* @param help
* The detailed help message for the command. May be null
*/
public GenericCommand(ICommandHandler handler, @Nullable String description,
@Nullable String help) {
if (handler == null) {
throw new NullPointerException(
"Command handler must not be null");
}
this.handler = handler;
if (description == null) {
this.help = new NullHelp();
} else {
this.help = new GenericHelp(description, help);
}
}
@Override
public ICommand aliased() {
return new DelegatingCommand(this);
}
@Override
public ICommandHandler getHandler() {
return handler;
}
@Override
public ICommandHelp getHelp() {
return help;
}
@Override
public boolean isAlias() {
return false;
}
}
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