Github user jinfengni commented on a diff in the pull request:
https://github.com/apache/drill/pull/397#discussion_r56435067
--- Diff:
exec/java-exec/src/main/java/org/apache/drill/exec/planner/sql/DrillSqlOperator.java
---
@@ -64,4 +108,47 @@ public boolean isDeterministic() {
public List<DrillFuncHolder> getFunctions() {
return functions;
}
+
+ public static class DrillSqlOperatorBuilder {
+ private String name;
+ private final List<DrillFuncHolder> functions = Lists.newArrayList();
+ private int argCountMin = Integer.MAX_VALUE;
+ private int argCountMax = Integer.MIN_VALUE;
+ private boolean isDeterministic = true;
+
+ public DrillSqlOperatorBuilder setName(final String name) {
+ this.name = name;
+ return this;
+ }
+
+ public DrillSqlOperatorBuilder
addFunctions(Collection<DrillFuncHolder> functions) {
+ this.functions.addAll(functions);
+ return this;
+ }
+
+ public DrillSqlOperatorBuilder setArgumentCount(final int argCountMin,
final int argCountMax) {
+ this.argCountMin = Math.min(this.argCountMin, argCountMin);
+ this.argCountMax = Math.max(this.argCountMax, argCountMax);
+ return this;
+ }
+
+ public DrillSqlOperatorBuilder setDeterministic(boolean
isDeterministic) {
+ if(this.isDeterministic) {
--- End diff --
why do you have this check?
If someone uses this builder, setDeterminsitic(false), then
setDeterministic(true). The second call will not get the desired result.
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