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error fixlendi

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This commit is contained in:
feyzagereme
2025-12-12 22:54:41 +03:00
parent 0a29f4d4c2
commit 3bd461e3b2
1 changed files with 62 additions and 33 deletions
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95
src/main/java/org/example/se302/service/DataImportService.java
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@@ -208,7 +208,9 @@ public class DataImportService {
/** /**
* Import enrollment data from CSV file. * Import enrollment data from CSV file.
* Format: Alternating lines - course code, then Python list of student IDs * Format: Alternating lines - course code, then Python list of student IDs,
* then blank line
* NO HEADER LINE in this file format.
*/ */
public ImportResult importEnrollments(File file) { public ImportResult importEnrollments(File file) {
ImportResult result = new ImportResult(); ImportResult result = new ImportResult();
@@ -228,51 +230,78 @@ public class DataImportService {
int courseCount = 0; int courseCount = 0;
int enrollmentCount = 0; int enrollmentCount = 0;
// Skip header, then process in pairs (course code, student list) // Process lines - pattern is: CourseCode, StudentList, EmptyLine, repeat...
for (int i = 1; i < lines.size(); i++) { // NO HEADER in this file format
String courseCode = lines.get(i).trim(); int i = 0;
while (i < lines.size()) {
String currentLine = lines.get(i).trim();
if (courseCode.isEmpty()) { // Skip empty lines
continue; // Skip empty lines if (currentLine.isEmpty()) {
} i++;
// Next line should be the student list
if (i + 1 >= lines.size()) {
result.addError("Line " + (i + 1) + ": Missing student list for course " + courseCode);
break;
}
i++; // Move to student list line
String studentListStr = lines.get(i).trim();
// Verify course exists
Course course = dataManager.getCourse(courseCode);
if (course == null) {
result.addError("Line " + (i) + ": Course not found: " + courseCode);
continue; continue;
} }
// Parse Python list format: ['Std_ID_001', 'Std_ID_002', ...] // Check if this looks like a course code
List<String> studentIds = parseStudentList(studentListStr); if (COURSE_CODE_PATTERN.matcher(currentLine).matches()) {
String courseCode = currentLine;
for (String studentId : studentIds) { // Verify course exists
Student student = dataManager.getStudent(studentId); Course course = dataManager.getCourse(courseCode);
if (student == null) { if (course == null) {
result.addError("Line " + (i + 1) + ": Student not found: " + studentId); result.addError("Line " + (i + 1) + ": Course not found: " + courseCode);
i++;
continue; continue;
} }
dataManager.addEnrollment(studentId, courseCode); // Next line should be the student list
enrollmentCount++; i++;
} if (i >= lines.size()) {
result.addError("Line " + i + ": Missing student list for course " + courseCode);
break;
}
courseCount++; String studentListStr = lines.get(i).trim();
// Check if this is a valid student list (starts with '[')
if (!studentListStr.startsWith("[")) {
result.addError("Line " + (i + 1) + ": Invalid student list format for course " + courseCode);
i++;
continue;
}
// Parse Python list format: ['Std_ID_001', 'Std_ID_002', ...]
List<String> studentIds = parseStudentList(studentListStr);
for (String studentId : studentIds) {
Student student = dataManager.getStudent(studentId);
if (student == null) {
result.addError("Line " + (i + 1) + ": Student not found: " + studentId);
continue;
}
dataManager.addEnrollment(studentId, courseCode);
enrollmentCount++;
}
courseCount++;
i++;
} else if (currentLine.startsWith("[")) {
// This is a student list without a course code before it - skip
result.addError("Line " + (i + 1) + ": Student list without course code: " +
(currentLine.length() > 50 ? currentLine.substring(0, 50) + "..." : currentLine));
i++;
} else {
// Unknown line format - skip
i++;
}
} }
result.setRecordCount(enrollmentCount); result.setRecordCount(enrollmentCount);
if (!result.hasErrors()) { if (!result.hasErrors()) {
result.setSuccess(true); result.setSuccess(true);
result.setMessage("Successfully imported " + enrollmentCount + " enrollments for " + courseCount + " courses"); result.setMessage(
"Successfully imported " + enrollmentCount + " enrollments for " + courseCount + " courses");
} else { } else {
result.setMessage("Imported " + enrollmentCount + " enrollments with errors"); result.setMessage("Imported " + enrollmentCount + " enrollments with errors");
} }
@@ -299,7 +328,7 @@ public class DataImportService {
String[] parts = content.split(","); String[] parts = content.split(",");
for (String part : parts) { for (String part : parts) {
String cleanId = part.trim() String cleanId = part.trim()
.replace("'", "") // Remove single quotes .replace("'", "") // Remove single quotes
.replace("\"", "") // Remove double quotes .replace("\"", "") // Remove double quotes
.trim(); .trim();