feat(model): introduce transaction hierarchy with deposit, withdraw, and transfer types

2026-06-05 19:20:24 +03:30
parent 281d47463e
commit 8cb8c11260
4 changed files with 143 additions and 27 deletions
@@ -0,0 +1,57 @@
+package dev.banking.model;
+
+/**
+ * Represents a transfer operation between two accounts.
+ */
+public final class TransferTransaction
+        extends Transaction {
+
+    private final int sourceAccountId;
+    private final int targetAccountId;
+
+    public TransferTransaction(
+            int sourceAccountId,
+            int targetAccountId,
+            int amount
+    ) {
+        super(amount);
+
+        if (sourceAccountId < 0) {
+            throw new IllegalArgumentException(
+                    "Invalid source account id."
+            );
+        }
+
+        if (targetAccountId < 0) {
+            throw new IllegalArgumentException(
+                    "Invalid target account id."
+            );
+        }
+
+        if (sourceAccountId == targetAccountId) {
+            throw new IllegalArgumentException(
+                    "Source and target accounts must be different."
+            );
+        }
+
+        this.sourceAccountId = sourceAccountId;
+        this.targetAccountId = targetAccountId;
+    }
+
+    public int getSourceAccountId() {
+        return sourceAccountId;
+    }
+
+    public int getTargetAccountId() {
+        return targetAccountId;
+    }
+
+    @Override
+    public String toString() {
+        return "TransferTransaction{" +
+                "sourceAccountId=" + sourceAccountId +
+                ", targetAccountId=" + targetAccountId +
+                ", amount=" + getAmount() +
+                '}';
+    }
+}