Structured Output

public class ProductInfo {
    public String name;
    public Double price;
    public List<String> features;

    public ProductInfo() {}  // Must have no-arg constructor
}

// Send query with output type
Msg response = agent.call(userMsg, ProductInfo.class).block();

// Extract typed data
ProductInfo data = response.getStructuredData(ProductInfo.class);

System.out.println("Product: " + data.name);
System.out.println("Price: $" + data.price);

ReActAgent agent = ReActAgent.builder()
    .name("Agent")
    .model(model)
    .structuredOutputReminder(StructuredOutputReminder.TOOL_CHOICE)  // or PROMPT
    .build();

public class Schema {
    // Basic types
    public String name;
    public Integer count;
    public Double score;
    public Boolean active;

    // Collection types
    public List<String> tags;
    public Map<String, Object> metadata;

    // Nested objects
    public Address address;
}

public class Person {
    public String name;
    public Address address;
    public List<String> hobbies;
}

public class Address {
    public String city;
    public String street;
}

public class CustomSchema {
    @JsonProperty("product_name")  // Custom field name
    public String productName;

    @JsonIgnore  // Ignore field
    public String internal;
}

try {
    Msg response = agent.call(userMsg, ProductInfo.class).block();
    ProductInfo data = response.getStructuredData(ProductInfo.class);

    // Business validation
    if (data.price < 0) {
        throw new IllegalArgumentException("Invalid price");
    }
} catch (Exception e) {
    System.err.println("Processing failed: " + e.getMessage());
}