cretaed entities for BillerDetail

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

@@ -0,0 +1,63 @@
+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_conf")
+public class InterchangeFeeConf {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id; // Primary Key for DB table
+
+    @Column(name = "interchange_fee_conf_id", nullable = false, unique = true)
+    @NotBlank(message = "Interchange Fee Config ID cannot be blank")
+    private String interChangeFeeConfId;
+
+    @Column(name = "mti")
+    private String mti;
+
+    @Column(name = "payment_mode")
+    private String paymentMode;
+
+    @Column(name = "payment_channel")
+    private String paymentChannel;
+
+    @Column(name = "response_code")
+    private String responseCode;
+
+    // ⚙️ Since 'fees' is a list of simple strings, we use ElementCollection
+    @ElementCollection
+    @CollectionTable(
+        name = "interchange_fee_conf_fees",
+        joinColumns = @JoinColumn(name = "interchange_fee_conf_id_fk")
+    )
+    @Column(name = "fee_value")
+    private List<String> fees;
+
+    @Column(name = "default_fee")
+    private boolean defaultFee;
+
+    @Column(name = "effective_from")
+    private String effctvFrom;
+
+    @Column(name = "effective_to")
+    private String effctvTo;
+
+    // 🔗 Many InterchangeFeeConf records belong to one Biller
+    @ManyToOne
+    @JoinColumn(name = "biller_id", nullable = false)
+    private BillerDetails biller;
+}