[GitHub] [pinot] 61yao commented on a diff in pull request #9389: [Feature] [Refactoring] Create LiteralContext to hold type and value of literal and Boolean literal eval support

[GitBox <gi...@apache.org>]

61yao commented on code in PR #9389:
URL: https://github.com/apache/pinot/pull/9389#discussion_r970095189


##########
pinot-common/src/main/java/org/apache/pinot/common/request/context/ExpressionContext.java:
##########
@@ -31,37 +34,53 @@
  */
 public class ExpressionContext {
   public enum Type {
-    LITERAL, IDENTIFIER, FUNCTION
+    IDENTIFIER, FUNCTION, LITERAL_CONTEXT

Review Comment:
   Done



##########
pinot-common/src/main/java/org/apache/pinot/common/request/context/ExpressionContext.java:
##########
@@ -31,37 +34,53 @@
  */
 public class ExpressionContext {
   public enum Type {
-    LITERAL, IDENTIFIER, FUNCTION
+    IDENTIFIER, FUNCTION, LITERAL_CONTEXT
   }
 
   private final Type _type;
   private final String _value;
   private final FunctionContext _function;
+  // Only set when the _type is LITERAL_CONTEXT
+  @Nullable
+  private final LiteralContext _literal;
 
-  public static ExpressionContext forLiteral(String literal) {
-    return new ExpressionContext(Type.LITERAL, literal, null);
+  public static ExpressionContext forLiteralContext(Literal literal){
+    return new ExpressionContext(Type.LITERAL_CONTEXT, null, null, new LiteralContext(literal));
+  }
+  public static ExpressionContext forLiteralContext(FieldSpec.DataType type, Object val){
+    return new ExpressionContext(Type.LITERAL_CONTEXT, null, null, new LiteralContext(type, val));
   }
 
   public static ExpressionContext forIdentifier(String identifier) {
-    return new ExpressionContext(Type.IDENTIFIER, identifier, null);
+    return new ExpressionContext(Type.IDENTIFIER, identifier, null, null);
   }
 
   public static ExpressionContext forFunction(FunctionContext function) {
-    return new ExpressionContext(Type.FUNCTION, null, function);
+    return new ExpressionContext(Type.FUNCTION, null, function, null);
   }
 
-  private ExpressionContext(Type type, String value, FunctionContext function) {
+  private ExpressionContext(Type type, String value, FunctionContext function, LiteralContext literal) {
     _type = type;
     _value = value;
     _function = function;
+    _literal = literal;
+  }
+
+  // TODO: Deprecate the usage of literal string.
+  public String getLiteralString() {
+    if (_literal == null || _literal.getValue() == null) {
+      return "";
+    }
+    return _literal.getValue().toString();
   }

Review Comment:
   Done



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