Class OptionalIsPresentMethod

java.lang.Object
org.datanucleus.store.rdbms.sql.method.OptionalIsPresentMethod
All Implemented Interfaces:
SQLMethod

public class OptionalIsPresentMethod extends Object implements SQLMethod
Method for evaluating {optionalExpr1}.isPresent(). Returns a BooleanExpression that equates to
{optionalExpr1} != NULL
  • Constructor Details

    • OptionalIsPresentMethod

      public OptionalIsPresentMethod()
  • Method Details

    • getExpression

      public SQLExpression getExpression(SQLStatement stmt, SQLExpression expr, List<SQLExpression> args)
      Description copied from interface: SQLMethod
      Return the expression for this SQL function.
      Specified by:
      getExpression in interface SQLMethod
      Parameters:
      stmt - SQLStatement that this expression is for
      expr - The expression that it is invoked on
      args - Arguments passed in
      Returns:
      The SQL expression using the SQL function