cretaed entities for BillerDetail

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

@@ -0,0 +1,47 @@
+package com.billpaymentservice.bbps.entites;
+
+import java.util.List;
+
+import lombok.Getter;
+import lombok.Setter;
+
+
+import jakarta.persistence.*;
+import jakarta.validation.constraints.*;
+import lombok.Getter;
+import lombok.Setter;
+import java.util.List;
+
+@Getter
+@Setter
+@Entity
+@Table(name = "interchange_fee")
+public class InterchangeFee {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id; // Primary key
+
+    @Column(name = "interchange_fee_id", nullable = false, unique = true)
+    @NotBlank(message = "Interchange Fee ID cannot be blank")
+    private String interchangeFeeId;
+
+    @Column(name = "fee_code", nullable = false)
+    @NotBlank(message = "Fee code is mandatory")
+    private String feeCode;
+
+    @Column(name = "fee_description")
+    private String feeDesc;
+
+    @Column(name = "fee_direction")
+    private String feeDirection;
+
+    // ✅ Relationship with InterchangeFeeDetail (One-to-Many)
+    @OneToMany(mappedBy = "interchangeFee", cascade = CascadeType.ALL, orphanRemoval = true)
+    private List<InterchangeFeeDetail> interchangeFeeDetails;
+
+    // 🔗 Many InterchangeFee entries belong to one Biller
+    @ManyToOne
+    @JoinColumn(name = "biller_id", nullable = false)
+    private BillerDetails biller;
+}