docete commented on a change in pull request #11493:
[FLINK-16160][table-common] Support computed column, proctime and watermark in
Schema descriptor
URL: https://github.com/apache/flink/pull/11493#discussion_r400634261
##########
File path:
flink-table/flink-table-common/src/main/java/org/apache/flink/table/descriptors/Schema.java
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@@ -183,11 +250,26 @@ public Schema proctime() {
return this;
}
+ /**
+ * Specifies the computed column as a processing-time attribute.
+ *
+ * <p>E.g. proctime("pt")
+ */
+ public Schema proctime(String proctimeAttribute) {
+ addField(proctimeAttribute, "TIMESTAMP(3)", "PROCTIME()");
+ tableSchema.get(proctimeAttribute).put(SCHEMA_PROCTIME, "true");
Review comment:
The old `field(...).proctime()` api use this to identify a proctime field.
We add this for back-compatibility. And we also use this property to
deserialize/serialize TableSchema in DescriptorProperties.
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