[SYSTEMDS-3857] set get names on frame

docs/site/dml-language-reference.md

@@ -2068,10 +2068,12 @@ The following example uses <code>transformapply()</code> with the input matrix a
 
 **Table F5**: Frame processing built-in functions
 
-Function | Description | Parameters | Example
--------- | ----------- | ---------- | -------
-map() | It will execute the given lambda expression on a frame (cell, row or column wise). | Input: (X &lt;frame&gt;, y &lt;String&gt;, \[margin &lt;int&gt;\]) <br/>Output: &lt;frame&gt;. <br/> X is a frame and <br/>y is a String containing the lambda expression to be executed on frame X. <br/> margin - how to apply the lambda expression (0 indicates each cell, 1 - rows, 2 - columns). Output matrix dimensions are always equal to the input. | [map](#map) 
-tokenize() | Transforms a frame to tokenized frame using specification. Tokenization is valid only for string columns. | Input:<br/> target = &lt;frame&gt; <br/> spec = &lt;json specification&gt; <br/> Outputs: &lt;matrix&gt;, &lt;frame&gt; | [tokenize](#tokenize)
+Function | Description                                                                                               | Parameters                                                                                                                                                                                                                                                                                                                                          | Example
+-------- |-----------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| -------
+map() | It will execute the given lambda expression on a frame (cell, row or column wise).                        | Input: (X &lt;frame&gt;, y &lt;String&gt;, \[margin &lt;int&gt;\]) <br/>Output: &lt;frame&gt;. <br/> X is a frame and <br/>y is a String containing the lambda expression to be executed on frame X. <br/> margin - how to apply the lambda expression (0 indicates each cell, 1 - rows, 2 - columns). Output matrix dimensions are always equal to the input. | [map](#map) 
+tokenize() | Transforms a frame to tokenized frame using specification. Tokenization is valid only for string columns. | Input:<br/> target = &lt;frame&gt; <br/> spec = &lt;json specification&gt; <br/> Outputs: &lt;matrix&gt;, &lt;frame&gt;                                                                                                                                                                                                                             | [tokenize](#tokenize)
+getNames() | Returns the column names of a frame as a single-row frame.                                                | Input: X &lt;frame&gt; <br/> Output: &lt;frame&gt;                                                                                                                                                                                                                                                                                                  | N = getNames(X)
+setNames() | Sets the column names of a frame from a single-row frame containing string values. | Input:<br/> X = &lt;frame&gt;<br/> N = &lt;frame&gt;<br/> Output:&lt;frame&gt;                                                                                                                                                                                                                                                                      | Y = setNames(X, N)
 
 #### map
 

src/main/java/org/apache/sysds/common/Builtins.java

@@ -154,6 +154,7 @@ public enum Builtins {
 	GARCH("garch", true),
 	GAUSSIAN_CLASSIFIER("gaussianClassifier", true),
 	GET_ACCURACY("getAccuracy", true),
+	GET_NAMES("getNames", false),
 	GET_CATEGORICAL_MASK("getCategoricalMask", false),
 	GLM("glm", true),
 	GLM_PREDICT("glmPredict", true),
@@ -310,6 +311,7 @@ public enum Builtins {
 	SELVARTHRESH("selectByVarThresh", true),
 	SEQ("seq", false),
 	SES("ses", true),
+	SET_NAMES("setNames", false),
 	SYMMETRICDIFFERENCE("symmetricDifference", true),
 	SHAPEXPLAINER("shapExplainer", true),
 	SHERLOCK("sherlock", true),

src/main/java/org/apache/sysds/common/Opcodes.java

@@ -352,6 +352,7 @@ public enum Opcodes {
 	MAPPM("map+*", InstructionType.Binary),
 	MAPMINUSMULT("map-*", InstructionType.Binary),
 	MAPDROPINVALIDLENGTH("mapdropInvalidLength", InstructionType.Binary),
+	SET_COLNAMES("set_colnames", InstructionType.Binary),
 
 	MAPGT("map>", InstructionType.Binary),
 	MAPGE("map>=", InstructionType.Binary),

src/main/java/org/apache/sysds/common/Types.java

@@ -641,7 +641,8 @@ public enum OpOp2 {
 		MINUS1_MULT(false), //1-X*Y
 		GET_CATEGORICAL_MASK(false), // get transformation mask
 		QUANTIZE_COMPRESS(false), //quantization-fused compression
-		UNION_DISTINCT(false);
+		UNION_DISTINCT(false),
+		SET_COLNAMES(false);
 
 		private final boolean _validOuter;