上传文件至 'W11/repository'

W11/repository/ArticleRepository.java

@@ -0,0 +1,67 @@
+package com.example.datacollect.repository;
+
+import com.example.datacollect.model.Article;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+public class ArticleRepository {
+    private static final Logger logger = LoggerFactory.getLogger(ArticleRepository.class);
+    private final List<Article> articles = new ArrayList<>();
+
+    public void add(Article article) {
+        if (article == null) {
+            logger.error("Attempted to add null article");
+            throw new IllegalArgumentException("Article cannot be null");
+        }
+        if (article.getTitle() == null || article.getTitle().trim().isEmpty()) {
+            logger.warn("Attempted to add article with empty title");
+            throw new IllegalArgumentException("Article title cannot be null or empty");
+        }
+        if (article.getUrl() == null || article.getUrl().trim().isEmpty()) {
+            logger.warn("Attempted to add article with empty URL");
+            throw new IllegalArgumentException("Article URL cannot be null or empty");
+        }
+        articles.add(article);
+        logger.debug("Added article: {}", article.getTitle());
+    }
+
+    public void addAll(List<Article> articlesToAdd) {
+        if (articlesToAdd == null) {
+            logger.error("Attempted to add null list of articles");
+            throw new IllegalArgumentException("Article list cannot be null");
+        }
+        for (Article article : articlesToAdd) {
+            add(article);
+        }
+        logger.info("Added {} articles to repository", articlesToAdd.size());
+    }
+
+    public List<Article> getAll() {
+        logger.debug("Retrieving all articles, count: {}", articles.size());
+        return Collections.unmodifiableList(articles);
+    }
+
+    public int size() {
+        return articles.size();
+    }
+
+    public void clear() {
+        logger.info("Clearing repository, removed {} articles", articles.size());
+        articles.clear();
+    }
+
+    public boolean isEmpty() {
+        return articles.isEmpty();
+    }
+
+    public Article get(int index) {
+        if (index < 0 || index >= articles.size()) {
+            logger.error("Attempted to access article at invalid index: {}", index);
+            throw new IndexOutOfBoundsException("Index: " + index + ", Size: " + articles.size());
+        }
+        return articles.get(index);
+    }
+}