code refactor

pkg/converters/datatable/basic_data_table.go

@@ -0,0 +1,34 @@
+package datatable
+
+// BasicDataTable defines the structure of basic data table
+type BasicDataTable interface {
+	// DataRowCount returns the total count of data row
+	DataRowCount() int
+
+	// HeaderColumnNames returns the header column name list
+	HeaderColumnNames() []string
+
+	// DataRowIterator returns the iterator of data row
+	DataRowIterator() BasicDataTableRowIterator
+}
+
+// BasicDataTableRow defines the structure of basic data row
+type BasicDataTableRow interface {
+	// ColumnCount returns the total count of column in this data row
+	ColumnCount() int
+
+	// GetData returns the data in the specified column index
+	GetData(columnIndex int) string
+}
+
+// BasicDataTableRowIterator defines the structure of basic data row iterator
+type BasicDataTableRowIterator interface {
+	// HasNext returns whether the iterator does not reach the end
+	HasNext() bool
+
+	// CurrentRowId returns current row id
+	CurrentRowId() string
+
+	// Next returns the next basic data row
+	Next() BasicDataTableRow
+}