Tinystruct Patterns

public class MyService extends AbstractApplication {
    @Override
    public void init() {
        this.setTemplateRequired(false); // Disable .view lookup for data/API apps
    }

    @Override public String version() { return "1.0.0"; }

    @Action("greet")
    public String greet() {
        return "Hello from tinystruct!";
    }

    // Path parameter: GET /?q=greet/James  OR  bin/dispatcher greet/James
    @Action("greet")
    public String greet(String name) {
        return "Hello, " + name + "!";
    }
}

@Action(value = "login", mode = Mode.HTTP_POST)
public String doLogin(Request<?, ?> request) throws ApplicationException {
    request.getSession().setAttribute("userId", "42");
    return "Logged in";
}

import org.tinystruct.data.component.Builder;
import org.tinystruct.data.component.Builders;

@Action("api/data")
public String getData() throws ApplicationException {
    Builders dataList = new Builders();
    Builder item = new Builder();
    item.put("id", 1);
    item.put("name", "James");
    dataList.add(item);

    Builder response = new Builder();
    response.put("status", "success");
    response.put("data", dataList);
    return response.toString(); // {"status":"success","data":[{"id":1,"name":"James"}]}
}

import org.tinystruct.http.SSEPushManager;

@Action("sse/connect")
public String connect() {
    return "{\"type\":\"connect\",\"message\":\"Connected to SSE\"}";
}

// Push to a specific client
String sessionId = getContext().getId();
Builder msg = new Builder();
msg.put("text", "Hello, user!");
SSEPushManager.getInstance().push(sessionId, msg);

// Broadcast to all
// Broadcast to all
SSEPushManager.getInstance().broadcast(msg);

import org.tinystruct.data.FileEntity;

@Action(value = "upload", mode = Mode.HTTP_POST)
public String upload(Request<?, ?> request) throws ApplicationException {
    List<FileEntity> files = request.getAttachments();
    if (files != null) {
        for (FileEntity file : files) {
            System.out.println("Uploaded: " + file.getFilename());
        }
    }
    return "Upload OK";
}

<dependency>
    <groupId>org.tinystruct</groupId>
    <artifactId>tinystruct</artifactId>
    <version>1.7.26</version>
</dependency>

import org.tinystruct.mcp.MCPTool;
import org.tinystruct.mcp.MCPException;
import org.tinystruct.system.annotation.Action;
import org.tinystruct.system.annotation.Argument;

public class MyCustomTool extends MCPTool {
    public MyCustomTool() {
        super("custom", "A custom tool for demonstrating MCP");
    }

    @Action(
        value = "custom/hello",
        description = "Say hello to someone",
        arguments = {
            @Argument(key = "name", description = "The name to greet", type = "string", optional = false)
        }
    )
    public String hello(String name) throws MCPException {
        // SECURITY: Validate/sanitize tool inputs before returning to the model
        // to prevent prompt injection vulnerabilities.
        if (name == null || name.length() > 50 || !name.matches("^[a-zA-Z0-9 ]+$")) {
            throw new MCPException("Invalid name provided");
        }
        return "Hello, " + name + "!";
    }
}

import org.tinystruct.mcp.MCPServer;

public class MyMCPServer extends MCPServer {
    @Override
    public void init() {
        super.init();
        this.registerTool(new MyCustomTool());
    }

    @Override
    public String version() {
        return "1.0.0";
    }
}

bin/dispatcher start --import org.tinystruct.system.HttpServer --import com.example.MyMCPServer

# Database
driver=org.h2.Driver
database.url=jdbc:h2:~/mydb
database.user=sa
database.password=

# Server
default.home.page=hello
server.port=8080

# Locale
default.language=en_US

# Session (Redis for clustered environments)
# default.session.repository=org.tinystruct.http.RedisSessionRepository
# redis.host=127.0.0.1
# redis.port=6379

String port = this.getConfiguration("server.port");