diff --git a/lib/build.gradle b/lib/build.gradle
index 7f9c6ad..ecf8598 100644
--- a/lib/build.gradle
+++ b/lib/build.gradle
@@ -33,6 +33,7 @@ dependencies {
     implementation "io.grpc:grpc-services:1.57.1"
     implementation "io.grpc:grpc-testing:1.57.1"
     implementation "io.cloudquery:plugin-pb-java:0.0.5"
+    implementation "org.apache.arrow:arrow-vector:12.0.1"
 }
 
 testing {
diff --git a/lib/src/main/java/io/cloudquery/scalar/Scalar.java b/lib/src/main/java/io/cloudquery/scalar/Scalar.java
new file mode 100644
index 0000000..5103f44
--- /dev/null
+++ b/lib/src/main/java/io/cloudquery/scalar/Scalar.java
@@ -0,0 +1,17 @@
+package io.cloudquery.scalar;
+
+import org.apache.arrow.vector.types.pojo.ArrowType;
+
+public interface Scalar {
+    String String();
+
+    Boolean IsValid();
+
+    ArrowType DataType();
+
+    void Set(Object obj);
+
+    Object Get();
+
+    Boolean Equal(Scalar other);
+}