make Ternary.java be able to process STMP sparse inputs

Author: Frxms

src/main/java/org/apache/sysds/hops/codegen/cplan/CNodeTernary.java

@@ -82,10 +82,13 @@ public String codegen(boolean sparse, GeneratorAPI api) {
 			String varj = _inputs.get(j-1).getVarname();
 			//replace sparse and dense inputs
 			tmp = tmp.replace("%IN"+j+"v%", 
-				varj+(varj.startsWith("a")?"vals":"") );
+				varj+(varj.startsWith("a")?"vals" : varj.startsWith("STMP") ? ".values()" :"") );
 			tmp = tmp.replace("%IN"+j+"i%", 
-				varj+(varj.startsWith("a")?"ix":"") );
+				varj+(varj.startsWith("a")?"ix": varj.startsWith("STMP") ? ".indexes()" :"") );
 			tmp = tmp.replace("%IN"+j+"%", varj );
+			tmp = tmp.replace("%POS%", varj.startsWith("a") ? varj+"i" : varj.startsWith("STMP") ? "0" : "");
+			tmp = tmp.replace("%LEN%",
+				varj.startsWith("a") ? "alen" : varj.startsWith("STMP") ? varj+".size()" : "");
 		}
 		sb.append(tmp);
 

src/main/java/org/apache/sysds/hops/codegen/cplan/java/Ternary.java

@@ -51,7 +51,7 @@ public String getTemplate(CNodeTernary.TernaryType type, boolean sparse) {
 
 			case LOOKUP_RC1:
 				return sparse ?
-					"    double %TMP% = getValue(%IN1v%, %IN1i%, ai, alen, %IN3%-1);\n" :
+					"    double %TMP% = getValue(%IN1v%, %IN1i%, %POS%, %LEN%, %IN3%-1);\n" :
 					"    double %TMP% = getValue(%IN1%, %IN2%, rix, %IN3%-1);\n";
 
 			case LOOKUP_RVECT1: