Package org.odpi.openmetadata.frameworks.connectors.tabulardatasets

Interface WritableTabularDataSource

All Known Implementing Classes:
CSVTabularDataSetCollectionConnector, CSVTabularDataSetConnector, PostgresTabularDataSetCollectionConnector, PostgresTabularDataSetConnector, ValidValueDataSetConnector
public interface WritableTabularDataSource
WritableTabularDataSource defines the specific connector api for working with simple tabular data. Each row represents a record that is divided into columns. Each row has the same list of columns and so the data source is effectively a table of data.

  • Method Details

    • getRecordCount

      long getRecordCount() throws ConnectorCheckedException
      Return the number of records in the data source.
      Returns:
      count
      Throws:
      ConnectorCheckedException - there is a problem accessing the data

    • setColumnDescriptions

      void setColumnDescriptions(List<TabularColumnDescription> columnDescriptions) throws ConnectorCheckedException
      Set up the columns associated with this tabular data source. These may be stored in the data set or kept in memory for this instance. The names of the columns will be in a canonical format where each word in the name is capitalized with a space between each word. This allows simple translation between the naming conventions supported by different technologies.
      Parameters:
      columnDescriptions - a list of column descriptions
      Throws:
      ConnectorCheckedException - there is a problem accessing the data

    • writeRecord

      void writeRecord(long rowNumber, List<String> dataValues) throws ConnectorCheckedException
      Write the requested data record. The first data record is record 0.
      Parameters:
      rowNumber - long
      dataValues - Map of column descriptions to strings, each string is the value for the column.
      Throws:
      ConnectorCheckedException - there is a problem accessing the data.

    • appendRecord

      void appendRecord(List<String> dataValues) throws ConnectorCheckedException
      Write the requested data record to the end of the data source.
      Parameters:
      dataValues - Map of column descriptions to strings, each string is the value for the column.
      Throws:
      ConnectorCheckedException - there is a problem accessing the data.

    • deleteRecord

      void deleteRecord(long rowNumber) throws ConnectorCheckedException
      Remove the requested data record. The first data record is record 0.
      Parameters:
      rowNumber - long
      Throws:
      ConnectorCheckedException - there is a problem accessing the data.