xuefuz commented on a change in pull request #8212: [FLINK-11519][table] Add
function related catalog APIs
URL: https://github.com/apache/flink/pull/8212#discussion_r276882578
##########
File path:
flink-table/flink-table-api-java/src/main/java/org/apache/flink/table/catalog/GenericInMemoryCatalog.java
##########
@@ -269,4 +273,81 @@ public boolean tableExists(ObjectPath tablePath) {
return tablePath != null &&
databaseExists(tablePath.getDatabaseName()) && tables.containsKey(tablePath);
}
+ // ------ functions ------
+
+ @Override
+ public void createFunction(ObjectPath functionPath, CatalogFunction
function, boolean ignoreIfExists)
+ throws FunctionAlreadyExistException, DatabaseNotExistException
{
+ checkArgument(functionPath != null);
+ checkArgument(function != null);
+
+ if (!databaseExists(functionPath.getDatabaseName())) {
+ throw new DatabaseNotExistException(catalogName,
functionPath.getDatabaseName());
+ }
+
+ if (functionExists(functionPath)) {
+ if (!ignoreIfExists) {
+ throw new
FunctionAlreadyExistException(catalogName, functionPath);
+ }
+ } else {
+ functions.put(functionPath, function.copy());
+ }
+ }
+
+ @Override
+ public void alterFunction(ObjectPath functionPath, CatalogFunction
newFunction, boolean ignoreIfNotExists)
+ throws FunctionNotExistException {
+ checkArgument(functionPath != null);
+ checkArgument(newFunction != null);
+
+ if (functionExists(functionPath)) {
+ functions.put(functionPath, newFunction.copy());
+ } else if (!ignoreIfNotExists) {
+ throw new FunctionNotExistException(catalogName,
functionPath);
+ }
+ }
+
+ @Override
+ public void dropFunction(ObjectPath functionPath, boolean
ignoreIfNotExists) throws FunctionNotExistException {
+ checkArgument(functionPath != null);
+
+ if (functionExists(functionPath)) {
+ functions.remove(functionPath);
+ } else if (!ignoreIfNotExists) {
+ throw new FunctionNotExistException(catalogName,
functionPath);
+ }
+ }
+
+ @Override
+ public List<String> listFunctions(String databaseName) throws
DatabaseNotExistException {
+
checkArgument(!StringUtils.isNullOrWhitespaceOnly(databaseName), "databaseName
cannot be null or empty");
+
+ String db = databaseName.toLowerCase();
+
+ if (!databaseExists(db)) {
+ throw new DatabaseNotExistException(catalogName, db);
+ }
+
+ return functions.keySet().stream()
+ .filter(k -> k.getDatabaseName().equals(db)).map(k ->
k.getObjectName())
+ .collect(Collectors.toList());
+ }
+
+ @Override
+ public CatalogFunction getFunction(ObjectPath functionPath) throws
FunctionNotExistException {
+ checkArgument(functionPath != null);
+
+ if (!functionExists(functionPath)) {
+ throw new FunctionNotExistException(catalogName,
functionPath);
+ } else {
+ return functions.get(functionPath).copy();
+ }
+ }
+
+ @Override
+ public boolean functionExists(ObjectPath functionPath) {
+ return functionPath != null &&
databaseExists(functionPath.getDatabaseName()) &&
Review comment:
Well, good point. However, I'd keep it consistent with other APIs (such as
tableExists()). We can come back to fix all of them together.
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