Add missing Java methods

src/main/java/com/snowflake/snowpark_java/Row.java

@@ -425,6 +425,18 @@ public Row getObject(int index) {
     return (Row) get(index);
   }
 
+  /**
+   * Returns the index of the field with the specified name.
+   *
+   * @param fieldName the name of the field.
+   * @return the index of the specified field.
+   * @throws UnsupportedOperationException if schema information is not available.
+   * @since 1.15.0
+   */
+  public int fieldIndex(String fieldName) {
+    return this.scalaRow.fieldIndex(fieldName);
+  }
+
   /**
    * Returns the value at the specified column index and casts it to the desired type {@code T}.
    *

src/main/java/com/snowflake/snowpark_java/types/StructType.java

@@ -58,6 +58,18 @@ private static com.snowflake.snowpark.types.StructField[] toScalaFieldsArray(
     return result;
   }
 
+  /**
+   * Return the index of the specified field.
+   *
+   * @param fieldName the name of the field.
+   * @return the index of the field with the specified name.
+   * @throws IllegalArgumentException if the given field name does not exist in the schema.
+   * @since 1.15.0
+   */
+  public int fieldIndex(String fieldName) {
+    return this.scalaStructType.fieldIndex(fieldName);
+  }
+
   /**
    * Retrieves the names of StructField.
    *

src/main/scala/com/snowflake/snowpark/Row.scala

@@ -373,15 +373,15 @@ class Row protected (values: Array[Any], schema: Option[StructType]) extends Ser
   /**
    * Returns the index of the field with the specified name.
    *
-   * @param name the name of the field.
+   * @param fieldName the name of the field.
    * @return the index of the specified field.
    * @throws UnsupportedOperationException if schema information is not available.
    * @since 1.15.0
    */
-  def fieldIndex(name: String): Int = {
+  def fieldIndex(fieldName: String): Int = {
     var schema = this.schema.getOrElse(
       throw new UnsupportedOperationException("Cannot get field index for row without schema"))
-    schema.fieldIndex(name)
+    schema.fieldIndex(fieldName)
   }
 
   /**

src/main/scala/com/snowflake/snowpark/types/StructType.scala

@@ -109,7 +109,7 @@ case class StructType(fields: Array[StructField] = Array())
    * Return the index of the specified field.
    *
    * @param fieldName the name of the field.
-   * @returns the index of the field with the specified name.
+   * @return the index of the field with the specified name.
    * @throws IllegalArgumentException if the given field name does not exist in the schema.
    * @since 1.15.0
    */

src/test/java/com/snowflake/snowpark_test/JavaRowSuite.java

@@ -629,4 +629,21 @@ public void getAsWithFieldName() {
         UnsupportedOperationException.class,
         () -> rowWithoutSchema.getAs("NonExistingColumn", Integer.class));
   }
+
+  @Test
+  public void fieldIndex() {
+    StructType schema =
+        StructType.create(
+            new StructField("EmpName", DataTypes.StringType),
+            new StructField("NumVal", DataTypes.IntegerType));
+
+    Row[] data = {Row.create("abcd", 10), Row.create("efgh", 20)};
+
+    DataFrame df = getSession().createDataFrame(data, schema);
+    Row row = df.collect()[0];
+
+    assert (row.fieldIndex("EmpName") == 0);
+    assert (row.fieldIndex("NumVal") == 1);
+    assertThrows(IllegalArgumentException.class, () -> row.fieldIndex("NonExistingColumn"));
+  }
 }

src/test/scala/com/snowflake/snowpark_test/RowSuite.scala

@@ -423,6 +423,14 @@ class RowSuite extends SNTestBase {
       rowWithoutSchema.getAs[Integer]("NonExistingColumn"));
   }
 
+  test("fieldIndex") {
+    val schema =
+      StructType(Seq(StructField("EmpName", StringType), StructField("NumVal", IntegerType)))
+    assert(schema.fieldIndex("EmpName") == 0)
+    assert(schema.fieldIndex("NumVal") == 1)
+    assertThrows[IllegalArgumentException](schema.fieldIndex("NonExistingColumn"))
+  }
+
   test("hashCode") {
     val row1 = Row(1, 2, 3)
     val row2 = Row("str", null, 3)