hdfs

Type Members

1. case class CsvField(name: String, column: Int, valueType: String) extends Product with Serializable

   

2. trait CsvFileHandler extends AnyRef

   

3. class CsvGraphLoader extends AnyRef

   

   Loads a graph stored in indexed CSV format from HDFS or the local file system The CSV files must be stored following this schema: # Nodes

   Loads a graph stored in indexed CSV format from HDFS or the local file system The CSV files must be stored following this schema: # Nodes

   • all files describing nodes are stored in a subfolder called "nodes"
   • create one file for each possible label combination that exists in the data, i.e. there must not be overlapping entities in different files (e.g. all nodes with labels :Person:Employee in a single file and all nodes that have label :Person exclusively in another file)
   • for every node csv file create a schema file called FILE_NAME.csv.SCHEMA
   • for information about the structure of the node schema file see CsvNodeSchema # Relationships
   • all files describing relationships are stored in a subfolder called "relationships"
   • create one csv file per relationship type
   • for every relationship csv file create a schema file called FILE_NAME.csv.SCHEMA
   • for information about the structure of the relationship schema file see CsvRelSchema

4. class CsvGraphWriter extends AnyRef

   

5. case class CsvNodeSchema(idField: CsvField, implicitLabels: List[String], optionalLabels: List[CsvField], propertyFields: List[CsvField]) extends CsvSchema with Product with Serializable

   

6. case class CsvRelSchema(idField: CsvField, startIdField: CsvField, endIdField: CsvField, relationshipType: String, propertyFields: List[CsvField]) extends CsvSchema with Product with Serializable

   

7. abstract class CsvSchema extends AnyRef

   

8. final class HadoopFileHandler extends CsvFileHandler

   

9. final class LocalFileHandler extends CsvFileHandler