Implemented equals() so that we only show each transaction once in UI even though it has been retrieved multiple times

BankingUiCommon/src/main/java/net/dankito/banking/ui/model/AccountTransaction.kt

@@ -21,6 +21,37 @@ open class AccountTransaction(
     internal constructor() : this(0.toBigDecimal(),"", "", Date(), null, null, null, null, BankAccount())
 
 
+    override fun equals(other: Any?): Boolean {
+        if (this === other) return true
+        if (other !is AccountTransaction) return false
+
+        if (amount.compareTo(other.amount) != 0) return false
+        if (currency != other.currency) return false
+        if (usage != other.usage) return false
+        if (bookingDate != other.bookingDate) return false
+        if (otherPartyName != other.otherPartyName) return false
+        if (otherPartyBankCode != other.otherPartyBankCode) return false
+        if (otherPartyAccountId != other.otherPartyAccountId) return false
+        if (bookingText != other.bookingText) return false
+        if (bankAccount != other.bankAccount) return false
+
+        return true
+    }
+
+    override fun hashCode(): Int {
+        var result = amount.hashCode()
+        result = 31 * result + currency.hashCode()
+        result = 31 * result + usage.hashCode()
+        result = 31 * result + bookingDate.hashCode()
+        result = 31 * result + (otherPartyName?.hashCode() ?: 0)
+        result = 31 * result + (otherPartyBankCode?.hashCode() ?: 0)
+        result = 31 * result + (otherPartyAccountId?.hashCode() ?: 0)
+        result = 31 * result + (bookingText?.hashCode() ?: 0)
+        result = 31 * result + bankAccount.hashCode()
+        return result
+    }
+
+
     override fun toString(): String {
         return "${DateFormat.getDateInstance(DateFormat.MEDIUM).format(bookingDate)} $amount $otherPartyName: $usage"
     }