code refactor

pkg/converters/datatable/common_data_table.go

@@ -0,0 +1,40 @@
+package datatable
+
+// CommonDataTable defines the structure of common data table
+type CommonDataTable interface {
+	// HeaderColumnCount returns the total count of column in header row
+	HeaderColumnCount() int
+
+	// HasColumn returns whether the common data table has specified column name
+	HasColumn(columnName string) bool
+
+	// DataRowCount returns the total count of common data row
+	DataRowCount() int
+
+	// DataRowIterator returns the iterator of common data row
+	DataRowIterator() CommonDataRowIterator
+}
+
+// CommonDataRow defines the structure of common data row
+type CommonDataRow interface {
+	// ColumnCount returns the total count of column in this data row
+	ColumnCount() int
+
+	// HasData returns whether the common data row has specified column data
+	HasData(columnName string) bool
+
+	// GetData returns the data in the specified column name
+	GetData(columnName string) string
+}
+
+// CommonDataRowIterator defines the structure of common data row iterator
+type CommonDataRowIterator interface {
+	// HasNext returns whether the iterator does not reach the end
+	HasNext() bool
+
+	// CurrentRowId returns current row id
+	CurrentRowId() string
+
+	// Next returns the next common data row
+	Next() CommonDataRow
+}