Package org.h2.test.scripts

Class Aggregate1

java.lang.Object
org.h2.test.scripts.Aggregate1
All Implemented Interfaces:
Aggregate
public class Aggregate1 extends Object implements Aggregate
An aggregate function for tests.

  • Constructor Details

    • Aggregate1

      public Aggregate1()

  • Method Details

    • getInternalType

      public int getInternalType(int[] inputTypes) throws SQLException
      Description copied from interface: Aggregate
      This method must return the H2 data type, Value, of the aggregate function, given the H2 data type of the input data. The method should check here if the number of parameters passed is correct, and if not it should throw an exception.
      Specified by:
      getInternalType in interface Aggregate
      Parameters:
      inputTypes - the H2 data type of the parameters,
      Returns:
      the H2 data type of the result
      Throws:
      SQLException - if the number/type of parameters passed is incorrect

    • add

      public void add(Object value) throws SQLException
      Description copied from interface: Aggregate
      This method is called once for each row. If the aggregate function is called with multiple parameters, those are passed as array.
      Specified by:
      add in interface Aggregate
      Parameters:
      value - the value(s) for this row
      Throws:
      SQLException - on failure

    • getResult

      public Object getResult() throws SQLException
      Description copied from interface: Aggregate
      This method returns the computed aggregate value. This method must preserve previously added values and must be able to reevaluate result if more values were added since its previous invocation.
      Specified by:
      getResult in interface Aggregate
      Returns:
      the aggregated value
      Throws:
      SQLException - on failure