Package org.apache.calcite.adapter.csv

Class CsvSchemaFactory

  • All Implemented Interfaces:
    SchemaFactory
    public class CsvSchemaFactory
extends java.lang.Object
implements SchemaFactory
    Factory that creates a CsvSchema.

    Allows a custom schema to be included in a model.json file.

    • Field Summary

      Fields 
      Modifier and Type Field Description
      static CsvSchemaFactory INSTANCE
      Public singleton, per factory contract.
      (package private) static java.lang.String ROWTIME_COLUMN_NAME
      Name of the column that is implicitly created in a CSV stream table to hold the data arrival time.

    • Constructor Summary

      Constructors 
      Modifier Constructor Description
      private CsvSchemaFactory()  

    • Method Summary

      All Methods Instance Methods Concrete Methods 
      Modifier and Type Method Description
      Schema create​(SchemaPlus parentSchema, java.lang.String name, java.util.Map<java.lang.String,​java.lang.Object> operand)
      Creates a Schema.

      • Methods inherited from class java.lang.Object

        clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

    • Field Detail

      • ROWTIME_COLUMN_NAME

        static final java.lang.String ROWTIME_COLUMN_NAME
        Name of the column that is implicitly created in a CSV stream table to hold the data arrival time.
        See Also:
        Constant Field Values

      • INSTANCE

        public static final CsvSchemaFactory INSTANCE
        Public singleton, per factory contract.

    • Constructor Detail

      • CsvSchemaFactory

        private CsvSchemaFactory()

    • Method Detail

      • create

        public Schema create​(SchemaPlus parentSchema,
                     java.lang.String name,
                     java.util.Map<java.lang.String,​java.lang.Object> operand)
        Description copied from interface: SchemaFactory
        Creates a Schema.
        Specified by:
        create in interface SchemaFactory
        Parameters:
        parentSchema - Parent schema
        name - Name of this schema
        operand - The "operand" JSON property
        Returns:
        Created schema