def execute(self, function_context: FlinkFunctionContext) -> Table:
example_meta: af.ExampleMeta = function_context.get_example_meta()
t_env = function_context.get_table_env()
t_env.connect(FileSystem().path(example_meta.batch_uri)) \
.with_format(OldCsv()
.field('word', DataTypes.STRING())) \
.with_schema(Schema()
.field('word', DataTypes.STRING())) \
.create_temporary_table('mySource')
return t_env.from_path('mySource')
def execute(self, function_context: FlinkFunctionContext, input_table: Table) -> None:
example_meta: af.ExampleMeta = function_context.get_example_meta()
output_file = example_meta.batch_uri
if os.path.exists(output_file):
os.remove(output_file)
t_env = function_context.get_table_env()
statement_set = function_context.get_statement_set()
t_env.connect(FileSystem().path(output_file)) \
.with_format(OldCsv()
.field_delimiter('\t')
.field('word', DataTypes.STRING())
.field('count', DataTypes.BIGINT())) \
.with_schema(Schema()
.field('word', DataTypes.STRING())
.field('count', DataTypes.BIGINT())) \
.create_temporary_table('mySink')
statement_set.add_insert('mySink', input_table)