Improved cancellation message

Author: habiblawal1

posts/2025-10-23-mcp-standalone-blog.adoc

@@ -162,14 +162,21 @@ import jakarta.enterprise.context.ApplicationScoped;
 
 @ApplicationScoped
 public class BasicTools {
-	@Tool(name = "cancellationTool", title = "Cancellable tool", description = "A tool that waits to be cancelled")
-	public String bigComputationTool(Cancellation cancellation) throws InterruptedException {
-		String[] citiesArray = { "London", "Japan", "New York" };
-		for (String city : citiesArray) {
+
+	@Tool(name = "processLargeDataset", title = "Process Large Dataset", description = "Processes data in chunks. Can be cancelled by the client.")
+	public String processLargeDataset(Cancellation cancellation) {
+		String[] itemsToProcess = { "Item1", "Item2", "Item3" };
+		List<String> processedItems = new ArrayList<>();
+
+		for (String item : itemsToProcess) {
+			// Throws exception if client requests cancellation
 			cancellation.skipProcessingIfCancelled();
-			System.out.println(city);
+
+			// Simulates a long running process
+			processItem(item);
+			processedItems.add(item);
 		}
-		return Arrays.toString(citiesArray);
+		return processedItems.toString();
 	}
 
 }