From dea23201e34082ba584f006aa8e5ba56cf32152a Mon Sep 17 00:00:00 2001
From: AnudeepKonaboina <krantianudeep@gmail.com>
Date: Fri, 17 Oct 2025 10:37:16 +0530
Subject: [PATCH] Spark 3.5: StaticInvoke compatibility in ManualTypedEncoder
 (8/9-arg); deterministic + arg types; fallback to constructor. Add test.

Signed-off-by: Anudeep Konaboina <krantianudeep@gmail.com>
Signed-off-by: AnudeepKonaboina <krantianudeep@gmail.com>
---
 .gitignore                                    |  6 ++
 .../encoders/ManualTypedEncoder.scala         | 85 ++++++++++++++++++-
 .../encoders/ManualTypedEncoderSpec.scala     |  0
 3 files changed, 90 insertions(+), 1 deletion(-)
 create mode 100644 core/src/test/scala/org/locationtech/rasterframes/encoders/ManualTypedEncoderSpec.scala

diff --git a/.gitignore b/.gitignore
index cc55b6fdb..9dc727c17 100644
--- a/.gitignore
+++ b/.gitignore
@@ -62,3 +62,9 @@ __pycache__
 .coverage*
 *.jar
 .python-version
+
+# Ignore SBT lock files
+project/.boot/**/sbt.boot.lock
+project/.boot/**/sbt.components.lock
+project/.ivy/.sbt.ivy.lock
+project/.sbtboot/**/.sbt.cache.lock
diff --git a/core/src/main/scala/org/locationtech/rasterframes/encoders/ManualTypedEncoder.scala b/core/src/main/scala/org/locationtech/rasterframes/encoders/ManualTypedEncoder.scala
index d9fd8282b..cdfed7def 100644
--- a/core/src/main/scala/org/locationtech/rasterframes/encoders/ManualTypedEncoder.scala
+++ b/core/src/main/scala/org/locationtech/rasterframes/encoders/ManualTypedEncoder.scala
@@ -10,12 +10,95 @@ import scala.reflect.{ClassTag, classTag}
 
 /** Can be useful for non Scala types and for complicated case classes with implicits in the constructor. */
 object ManualTypedEncoder {
+  /** Constructs StaticInvoke via reflection to handle Spark 3.4/3.5 constructor differences. */
+  private def staticInvokeSafely(
+    targetClass: Class[_],
+    dataType: DataType,
+    functionName: String,
+    arguments: Seq[Expression],
+    propagateNull: Boolean,
+    returnNullable: Boolean
+  ): InvokeLike = {
+    val ctors = classOf[StaticInvoke].getConstructors
+    val boxedPropagateNull = Boolean.box(propagateNull)
+    val boxedReturnNullable = Boolean.box(returnNullable)
+    val TRUE = Boolean.box(true)
+
+    val ctor = ctors.maxBy(_.getParameterTypes.length)
+    val argTypes: Seq[DataType] = arguments.map(_.dataType)
+    val targetModuleClass: Class[_] = {
+      val moduleName = targetClass.getName + "$"
+      try Class.forName(moduleName)
+      catch { case _: ClassNotFoundException => targetClass }
+    }
+
+    def tryInvoke(onClass: Class[_]): InvokeLike = ctor.getParameterTypes.length match {
+      case 9 =>
+        // (Class, DataType, String, Seq, Seq, boolean, boolean, boolean, Option)
+        ctor.newInstance(
+          onClass,
+          dataType,
+          functionName,
+          arguments,
+          argTypes,
+          boxedPropagateNull,
+          boxedReturnNullable,
+          TRUE,
+          None
+        ).asInstanceOf[InvokeLike]
+      case 8 =>
+        // (Class, DataType, String, Seq, Seq, boolean, boolean, boolean)
+        ctor.newInstance(
+          onClass,
+          dataType,
+          functionName,
+          arguments,
+          argTypes,
+          boxedPropagateNull,
+          boxedReturnNullable,
+          TRUE
+        ).asInstanceOf[InvokeLike]
+      case _ =>
+        throw new NotImplementedError("StaticInvoke constructor has unexpected shape")
+    }
+    ctor.getParameterTypes.length match {
+      case 9 | 8 =>
+        // Try on the class first (top-level case classes have static forwarders), then on module
+        val firstError = try {
+          return tryInvoke(targetClass)
+        } catch { case t: Throwable => t }
+        tryInvoke(targetModuleClass)
+      case _ =>
+        throw new NotImplementedError("StaticInvoke constructor has unexpected shape")
+    }
+  }
+
+  /** Detect whether a static forwarder for `apply` of given arity exists on the given class. */
+  private def hasStaticApply(onClass: Class[_], arity: Int): Boolean = {
+    import java.lang.reflect.Modifier
+    onClass.getMethods.exists { m =>
+      m.getName == "apply" && m.getParameterCount == arity && Modifier.isStatic(m.getModifiers)
+    }
+  }
+
   /** Invokes apply from the companion object. */
   def staticInvoke[T: ClassTag](
     fields: List[RecordEncoderField],
     fieldNameModify: String => String = identity,
     isNullable: Boolean = true
-  ): TypedEncoder[T] = apply[T](fields, { (classTag, newArgs, jvmRepr) => StaticInvoke(classTag.runtimeClass, jvmRepr, "apply", newArgs, propagateNull = true, returnNullable = false) }, fieldNameModify, isNullable)
+  ): TypedEncoder[T] = apply[T](fields, { (classTag, newArgs, jvmRepr) =>
+      val target = classTag.runtimeClass
+      val moduleName = target.getName + "$"
+      val moduleClass = try Class.forName(moduleName) catch { case _: ClassNotFoundException => null }
+      val arity = newArgs.length
+      if ((hasStaticApply(target, arity)) || (moduleClass != null && hasStaticApply(moduleClass, arity))) {
+        staticInvokeSafely(target, jvmRepr, "apply", newArgs, propagateNull = true, returnNullable = false)
+      }
+      else {
+        // Fall back to directly invoking the primary constructor
+        NewInstance(target, newArgs, jvmRepr, propagateNull = true)
+      }
+    }, fieldNameModify, isNullable)
 
   /** Invokes object constructor. */
   def newInstance[T: ClassTag](
diff --git a/core/src/test/scala/org/locationtech/rasterframes/encoders/ManualTypedEncoderSpec.scala b/core/src/test/scala/org/locationtech/rasterframes/encoders/ManualTypedEncoderSpec.scala
new file mode 100644
index 000000000..e69de29bb