veghlaci05 commented on code in PR #3891:
URL: https://github.com/apache/hive/pull/3891#discussion_r1082601830
##########
ql/src/java/org/apache/hadoop/hive/ql/parse/RowResolver.java:
##########
@@ -101,17 +104,25 @@ public ASTNode getExpressionSource(ASTNode node) {
}
public void put(String tab_alias, String col_alias, ColumnInfo colInfo) {
+ if (!putInternal(tab_alias, col_alias, colInfo)) {
+ return;
+ }
+ if (col_alias != null) {
+ colInfo.setAlias(col_alias.toLowerCase());
+ }
+ }
+
+ public boolean putInternal(String tab_alias, String col_alias, ColumnInfo
colInfo) {
Review Comment:
`putInternal` could be private, it's only used inside `RowResolver`
##########
ql/src/java/org/apache/hadoop/hive/ql/parse/RowResolver.java:
##########
@@ -101,17 +104,25 @@ public ASTNode getExpressionSource(ASTNode node) {
}
public void put(String tab_alias, String col_alias, ColumnInfo colInfo) {
+ if (!putInternal(tab_alias, col_alias, colInfo)) {
+ return;
+ }
+ if (col_alias != null) {
+ colInfo.setAlias(col_alias.toLowerCase());
+ }
Review Comment:
why not merge the two ifs?
##########
ql/src/java/org/apache/hadoop/hive/ql/parse/RowResolver.java:
##########
@@ -481,11 +492,16 @@ public static RowResolver getCombinedRR(RowResolver
leftRR,
public RowResolver duplicate() {
RowResolver resolver = new RowResolver();
resolver.rowSchema = new RowSchema(rowSchema);
- resolver.rslvMap.putAll(rslvMap);
+ for (Map.Entry<String, Map<String, ColumnInfo>> entry :
rslvMap.entrySet()) {
+ resolver.rslvMap.put(entry.getKey(), new
LinkedHashMap<>(entry.getValue()));
+ }
resolver.invRslvMap.putAll(invRslvMap);
resolver.altInvRslvMap.putAll(altInvRslvMap);
resolver.expressionMap.putAll(expressionMap);
resolver.isExprResolver = isExprResolver;
+ for (Map.Entry<String, Map<String, String>> entry :
ambiguousColumns.entrySet()) {
+ resolver.ambiguousColumns.put(entry.getKey(), new
LinkedHashMap<>(entry.getValue()));
+ }
resolver.ambiguousColumns.putAll(ambiguousColumns);
Review Comment:
Now you are putting the items twice, is this intended?
##########
ql/src/java/org/apache/hadoop/hive/ql/parse/RowResolver.java:
##########
@@ -81,7 +81,10 @@ public RowResolver() {
public void putExpression(ASTNode node, ColumnInfo colInfo) {
String treeAsString = node.toStringTree();
expressionMap.put(treeAsString, node);
- put("", treeAsString, colInfo);
+ if (!putInternal("", treeAsString, colInfo)) {
+ return;
+ }
+ colInfo.setAlias(treeAsString);
Review Comment:
Why not invert the criteria and move colInfo.setAlias(treeAsString); inside
the if. I think that would increase code radability.
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