[GitHub] [calcite] julianhyde commented on a change in pull request #1522: [CALCITE-3323] Handle arbitrary/unknown functions that have ordinary syntax

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julianhyde commented on a change in pull request #1522: [CALCITE-3323] Handle arbitrary/unknown functions that have ordinary syntax
URL: https://github.com/apache/calcite/pull/1522#discussion_r336815082
 
 

 ##########
 File path: core/src/main/java/org/apache/calcite/config/CalciteConnectionConfigImpl.java
 ##########
 @@ -40,8 +40,13 @@ public CalciteConnectionConfigImpl(Properties properties) {
   /** Returns a copy of this configuration with one property changed. */
   public CalciteConnectionConfigImpl set(CalciteConnectionProperty property,
       String value) {
-    final Properties properties1 = new Properties(properties);
-    properties1.setProperty(property.camelName(), value);
+    final Properties properties1 = new Properties();
+    this.properties.forEach((connectionProp, connectionValue) -> {
+      properties1.setProperty((String) connectionProp, (String) connectionValue);
+    });
 
 Review comment:
   Yes, `clone()` looks promising.

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