abstractdog commented on code in PR #6344:
URL: https://github.com/apache/hive/pull/6344#discussion_r2883188117
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ql/src/java/org/apache/hadoop/hive/ql/plan/MapWork.java:
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@@ -364,20 +364,46 @@ public void internTable(Interner<TableDesc> interner) {
}
}
- /**
- * @return the aliasToPartnInfo
- */
- public Map<String, PartitionDesc> getAliasToPartnInfo() {
- return aliasToPartnInfo;
+ public Collection<PartitionDesc> getPartitionDescs() {
+ if (aliasToPartnInfo == null) {
+ return Collections.emptyList();
+ }
+ return Collections.unmodifiableCollection(aliasToPartnInfo.values());
}
- /**
- * @param aliasToPartnInfo
- * the aliasToPartnInfo to set
- */
- public void setAliasToPartnInfo(
- LinkedHashMap<String, PartitionDesc> aliasToPartnInfo) {
- this.aliasToPartnInfo = aliasToPartnInfo;
+ public PartitionDesc getPartitionDesc(String alias) {
+ return aliasToPartnInfo == null ? null : aliasToPartnInfo.get(alias);
+ }
+
+ public int getPartitionCount() {
+ return aliasToPartnInfo == null ? 0 : aliasToPartnInfo.size();
+ }
+
+ public boolean hasPartitionDesc(String alias) {
+ return aliasToPartnInfo != null && aliasToPartnInfo.containsKey(alias);
+ }
+
+ public void putPartitionDesc(String alias, PartitionDesc partitionDesc) {
+ if (aliasToPartnInfo == null) {
+ aliasToPartnInfo = new LinkedHashMap<>();
+ }
+ aliasToPartnInfo.put(alias, partitionDesc);
+ }
+
+ public void putAllPartitionDescs(Map<String, PartitionDesc> partitionDescs) {
+ if (partitionDescs == null || partitionDescs.isEmpty()) {
+ return;
+ }
+ if (aliasToPartnInfo == null) {
+ aliasToPartnInfo = new LinkedHashMap<>();
Review Comment:
can we rely on the current instance, like:
```
private Map<String, PartitionDesc> aliasToPartnInfo = new
LinkedHashMap<String, PartitionDesc>();
```
this ensures that we have an instance and don't need the extra null checks
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