JNSimba commented on code in PR #167:
URL:
https://github.com/apache/doris-flink-connector/pull/167#discussion_r1281849015
##########
flink-doris-connector/src/main/java/org/apache/doris/flink/sink/writer/JsonDebeziumSchemaSerializer.java:
##########
@@ -277,6 +371,68 @@ private String authHeader() {
return "Basic " + new
String(Base64.encodeBase64((dorisOptions.getUsername() + ":" +
dorisOptions.getPassword()).getBytes(StandardCharsets.UTF_8)));
}
+ private void fillOriginSchema(JsonNode columns) {
+ if (Objects.nonNull(originFieldSchemaMap)) {
+ for (JsonNode column : columns) {
+ String fieldName = column.get("name").asText();
+ if (originFieldSchemaMap.containsKey(fieldName)) {
+ JsonNode length = column.get("length");
+ JsonNode scale = column.get("scale");
+ String type =
MysqlType.toDorisType(column.get("typeName").asText(),
+ length == null ? 0 : length.asInt(),
+ scale == null ? 0 : scale.asInt());
+ String defaultValue =
handleDefaultValue(extractJsonNode(column, "defaultValueExpression"));
+ String comment = extractJsonNode(column, "comment");
+ FieldSchema fieldSchema =
originFieldSchemaMap.get(fieldName);
+ fieldSchema.setName(fieldName);
+ fieldSchema.setTypeString(type);
+ fieldSchema.setComment(comment);
+ fieldSchema.setDefaultValue(defaultValue);
+ }
+ }
+ } else {
+ originFieldSchemaMap = new LinkedHashMap<>();
+ columns.forEach(column -> buildFieldSchema(originFieldSchemaMap,
column));
+ }
+ firstSchemaChange = false;
+ firstLoad = false;
+ }
+
+ private void buildFieldSchema(Map<String, FieldSchema> filedSchemaMap,
JsonNode column) {
+ String fieldName = column.get("name").asText();
+ JsonNode length = column.get("length");
+ JsonNode scale = column.get("scale");
+ String type = MysqlType.toDorisType(column.get("typeName").asText(),
+ length == null ? 0 : length.asInt(), scale == null ? 0 :
scale.asInt());
+ String defaultValue = handleDefaultValue(extractJsonNode(column,
"defaultValueExpression"));
+ String comment = extractJsonNode(column, "comment");
+ filedSchemaMap.put(fieldName, new FieldSchema(fieldName, type,
defaultValue, comment));
+ }
+
+ private String handleDefaultValue(String defaultValue) {
+ if (StringUtils.isNullOrWhitespaceOnly(defaultValue)) {
+ return null;
+ }
+ // Due to historical reasons, doris needs to add quotes to the default
value of the new column
+ if (Pattern.matches("['\"].*?['\"]", defaultValue)) {
Review Comment:
suggest writing an example
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