cretaed entities for BillerDetail

src/main/java/com/billpaymentservice/bbps/entites/BillerResponseParams.java

@@ -0,0 +1,39 @@
+package com.billpaymentservice.bbps.entites;
+
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.NotBlank;
+import lombok.Getter;
+import lombok.Setter;
+import java.util.List;
+
+@Getter
+@Setter
+@Entity
+@Table(name = "biller_response_params")
+public class BillerResponseParams {
+
+    @Id
+    @Column(name = "biller_response_id", nullable = false, unique = true)
+    @NotBlank(message = "Biller Response ID is required")
+    private String billerResponseId;
+
+    // 🔗 One-to-One Relationship with BillerDAO
+    @OneToOne
+    @JoinColumn(name = "biller_id", nullable = false)
+    private BillerDetails biller;
+
+    // ✅ Since params and amountOptions are lists of objects, 
+    // we can store them as JSON or in a separate table (simplified here using @ElementCollection)
+
+    @ElementCollection
+    @CollectionTable(
+        name = "biller_response_params_data",
+        joinColumns = @JoinColumn(name = "biller_response_id")
+    )
+    @Column(name = "param_value")
+    private List<String> params;
+
+    @OneToMany(mappedBy = "billerResponseParams", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<AmountOption> amountOptions;
+}