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src/main/java/seedu/address/logic/commands/ListStudentsOfClassCommand.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| package seedu.address.logic.commands; | ||
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| import static java.util.Objects.requireNonNull; | ||
| import static seedu.address.logic.parser.CliSyntax.PREFIX_MODULECODE; | ||
| import static seedu.address.logic.parser.CliSyntax.PREFIX_TUTORIALCLASS; | ||
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| import seedu.address.logic.commands.exceptions.CommandException; | ||
| import seedu.address.model.Model; | ||
| import seedu.address.model.module.ModuleCode; | ||
| import seedu.address.model.module.TutorialClass; | ||
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| /** | ||
| * A command to list all students of a particular tutorial class. | ||
| */ | ||
| public class ListStudentsOfClassCommand extends Command { | ||
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| public static final String COMMAND_WORD = "/class_list_students"; | ||
| public static final String MESSAGE_STUDENT_LIST_EMPTY = "No students found in the specified tutorial class"; | ||
| public static final String MESSAGE_USAGE = COMMAND_WORD + ": List students of the tutorial class. \n" | ||
| + "Parameters: " | ||
| + PREFIX_MODULECODE + "MODULE CODE " | ||
| + PREFIX_TUTORIALCLASS + "TUTORIAL CLASS " | ||
| + "Example: " + COMMAND_WORD + " " | ||
| + PREFIX_MODULECODE + "CS2103T " | ||
| + PREFIX_TUTORIALCLASS + "T09 "; | ||
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| private final ModuleCode module; | ||
| private final TutorialClass tutorialClass; | ||
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| /** | ||
| * Creates a ListStudentsCommand to list students of the specified tutorial class. | ||
| * | ||
| * @param module The module code. | ||
| * @param tutorialClass The tutorial class. | ||
| */ | ||
| public ListStudentsOfClassCommand(ModuleCode module, TutorialClass tutorialClass) { | ||
| requireNonNull(module); | ||
| this.module = module; | ||
| this.tutorialClass = tutorialClass; | ||
| } | ||
| @Override | ||
| public CommandResult execute(Model model) throws CommandException { | ||
| requireNonNull(model); | ||
| ModuleCode existingModule = model.findModuleFromList(module); | ||
| if (existingModule == null || !existingModule.hasTutorialClass(tutorialClass)) { | ||
| return new CommandResult(String.format("Module %s or tutorial class %s not found", | ||
| module, tutorialClass, MESSAGE_STUDENT_LIST_EMPTY)); | ||
| } | ||
| TutorialClass existingTutorialClass = model.findTutorialClassFromList(tutorialClass, module); | ||
| if (existingTutorialClass.getStudents().isEmpty()) { | ||
| return new CommandResult(MESSAGE_STUDENT_LIST_EMPTY); | ||
| } | ||
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| StringBuilder result = new StringBuilder(); | ||
| result.append("Module: ").append(module).append(", Tutorial Class: ") | ||
| .append(tutorialClass).append("\nStudents: "); | ||
| existingTutorialClass.getStudents().forEach(student -> result.append(student.getName()).append(", ")); | ||
| return new CommandResult(result.toString().trim()); | ||
| } | ||
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| @Override | ||
| public boolean equals(Object other) { | ||
| if (other == this) { | ||
| return true; | ||
| } | ||
| if (!(other instanceof ListStudentsOfClassCommand)) { | ||
| return false; | ||
| } | ||
| ListStudentsOfClassCommand command = (ListStudentsOfClassCommand) other; | ||
| return module.equals(command.module) && tutorialClass.equals(command.tutorialClass); | ||
| } | ||
| } |
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53
src/main/java/seedu/address/logic/parser/ListStudentsOfClassCommandParser.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,53 @@ | ||
| package seedu.address.logic.parser; | ||
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| import static seedu.address.logic.Messages.MESSAGE_INVALID_COMMAND_FORMAT; | ||
| import static seedu.address.logic.parser.CliSyntax.PREFIX_MODULECODE; | ||
| import static seedu.address.logic.parser.CliSyntax.PREFIX_TUTORIALCLASS; | ||
|
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| import java.util.stream.Stream; | ||
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| import seedu.address.logic.commands.ListStudentsOfClassCommand; | ||
| import seedu.address.logic.parser.exceptions.ParseException; | ||
| import seedu.address.model.module.ModuleCode; | ||
| import seedu.address.model.module.TutorialClass; | ||
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| /** | ||
| * Parses input arguments and creates a new ListStudentsCommand object. | ||
| */ | ||
| public class ListStudentsOfClassCommandParser implements Parser<ListStudentsOfClassCommand> { | ||
|
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| /** | ||
| * Parses the given {@code String} of arguments in the context of the ListStudentsCommand | ||
| * and returns a ListStudentsCommand object for execution. | ||
| * | ||
| * @param args String containing the arguments. | ||
| * @return ListStudentsCommand object representing the command. | ||
| * @throws ParseException if the user input does not conform to the expected format. | ||
| */ | ||
| public ListStudentsOfClassCommand parse(String args) throws ParseException { | ||
| ArgumentMultimap argMultimap = | ||
| ArgumentTokenizer.tokenize(args, PREFIX_MODULECODE, PREFIX_TUTORIALCLASS); | ||
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| if (!arePrefixesPresent(argMultimap, PREFIX_MODULECODE, PREFIX_TUTORIALCLASS) | ||
| || !argMultimap.getPreamble().isEmpty()) { | ||
| throw new ParseException(String.format(MESSAGE_INVALID_COMMAND_FORMAT, | ||
| ListStudentsOfClassCommand.MESSAGE_USAGE)); | ||
| } | ||
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| argMultimap.verifyNoDuplicatePrefixesFor(PREFIX_MODULECODE, PREFIX_TUTORIALCLASS); | ||
| ModuleCode module = ParserUtil.parseModuleCode(argMultimap.getValue(PREFIX_MODULECODE).get()); | ||
| TutorialClass tutorialClass = ParserUtil.parseTutorialClass(argMultimap.getValue(PREFIX_TUTORIALCLASS).get()); | ||
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| return new ListStudentsOfClassCommand(module, tutorialClass); | ||
| } | ||
|
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| /** | ||
| * Returns true if all the prefixes contain non-empty values in the given {@code ArgumentMultimap}. | ||
| */ | ||
| private static boolean arePrefixesPresent(ArgumentMultimap argumentMultimap, Prefix... prefixes) { | ||
| return Stream.of(prefixes).allMatch(prefix -> argumentMultimap.getValue(prefix).isPresent()); | ||
| } | ||
| } | ||
|
|
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