vvysotskyi commented on a change in pull request #1481: DRILL-6763: Codegen
optimization of SQL functions with constant values
URL: https://github.com/apache/drill/pull/1481#discussion_r225494095
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File path:
exec/java-exec/src/main/java/org/apache/drill/exec/expr/ClassGenerator.java
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@@ -531,11 +541,42 @@ public JVar declareClassField(String prefix, JType t) {
public JVar declareClassField(String prefix, JType t, JExpression init) {
if (innerClassGenerator != null && hasMaxIndexValue()) {
- return innerClassGenerator.clazz.field(JMod.NONE, t, prefix + index++,
init);
+ return innerClassGenerator.declareClassField(prefix, t, init);
}
return clazz.field(JMod.NONE, t, prefix + index++, init);
}
+ /**
+ * declare a setter method for the argument {@code var}.
+ * argument {@code function} holds the constant value which
+ * returns a value holder must be invoked when the class instance created.
+ * the setter method of innerClassField will be invoked if
innerClassGenerator exists.
+ *
+ * @param var the class member variable
+ * @param function the function holds the constant value
+ * @return the depth of nested class, setter method
+ */
+ public Pair<Integer, JMethod> declareSetterMethod(JVar var,
Function<DrillBuf, ? extends ValueHolder> function) {
+ JMethod setter = clazz.method(JMod.PUBLIC, void.class, "set" +
StringUtils.capitalize(var.name()));
Review comment:
Please move the initialization to the else block below and put code which
uses this var after the `if...else` block.
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