fix: EXPOSED-501 Column.transform() ignores custom setParameter() log…

…ic (#2214)

Adding transform() to a column with a type that relies on logic in setParameter()
leads to failure because the delegate's function is not invoked by the wrapping
ColumnWithTransform.

This adds an override to ColumnWithTransform that ensures the delegate's
function is entered.

exposed-core/api/exposed-core.api

@@ -533,6 +533,7 @@ public class org/jetbrains/exposed/sql/ColumnWithTransform : org/jetbrains/expos
 	public fun nonNullValueToString (Ljava/lang/Object;)Ljava/lang/String;
 	public fun notNullValueToDB (Ljava/lang/Object;)Ljava/lang/Object;
 	public fun setNullable (Z)V
+	public fun setParameter (Lorg/jetbrains/exposed/sql/statements/api/PreparedStatementApi;ILjava/lang/Object;)V
 	public fun sqlType ()Ljava/lang/String;
 	public fun unwrap (Ljava/lang/Object;)Ljava/lang/Object;
 	public final fun unwrapRecursive (Ljava/lang/Object;)Ljava/lang/Object;

exposed-core/src/main/kotlin/org/jetbrains/exposed/sql/ColumnType.kt

@@ -324,6 +324,10 @@ open class ColumnWithTransform<Unwrapped : Any, Wrapped : Any>(
     }
 
     override var nullable = delegate.nullable
+
+    override fun setParameter(stmt: PreparedStatementApi, index: Int, value: Any?) {
+        return delegate.setParameter(stmt, index, value)
+    }
 }
 
 // Numeric columns

exposed-json/src/test/kotlin/org/jetbrains/exposed/sql/json/JsonColumnTests.kt

@@ -406,4 +406,23 @@ class JsonColumnTests : DatabaseTestsBase() {
             assertEquals(newData2, newResult?.get(tester.jsonColumn))
         }
     }
+
+    @Test
+    fun testJsonWithTransformer() {
+        val tester = object : Table("tester") {
+            val numbers: Column<DoubleArray> = json<IntArray>("numbers", Json.Default).transform(
+                wrap = { DoubleArray(it.size) { i -> 1.0 * it[i] } },
+                unwrap = { IntArray(it.size) { i -> it[i].toInt() } }
+            )
+        }
+
+        withTables(tester) {
+            val data = doubleArrayOf(1.0, 2.0, 3.0)
+            tester.insert {
+                it[numbers] = data
+            }
+
+            assertContentEquals(data, tester.selectAll().single()[tester.numbers])
+        }
+    }
 }