Package org.datanucleus.store.rdbms.sql.expression

Class ByteExpression

java.lang.Object
org.datanucleus.store.rdbms.sql.expression.SQLExpression
org.datanucleus.store.rdbms.sql.expression.NumericExpression
org.datanucleus.store.rdbms.sql.expression.ByteExpression
public class ByteExpression extends NumericExpression
Representation of a Byte expression in a Query.

  • Constructor Details

    • ByteExpression

      public ByteExpression(SQLStatement stmt, SQLTable table, JavaTypeMapping mapping)
      Constructor for an SQL expression for a (field) mapping in a specified table.
      Parameters:
      stmt - The statement
      table - The table in the statement
      mapping - The mapping for the field

    • ByteExpression

      public ByteExpression(org.datanucleus.store.query.expression.Expression.MonadicOperator op, SQLExpression expr1)
      Perform an operation 
      op
      on expression 
      expr1
      .
      Parameters:
      op - operator
      expr1 - operand

    • ByteExpression

      public ByteExpression(SQLExpression expr1, org.datanucleus.store.query.expression.Expression.DyadicOperator op, SQLExpression expr2)
      Perform an operation 
      op
      between 
      expr1
      and 
      expr2
      .
      Parameters:
      expr1 - the first expression
      op - the operator between operands
      expr2 - the second expression

  • Method Details

    • eq

      public BooleanExpression eq(SQLExpression expr)
      Description copied from class: SQLExpression
      Equality operator (equals to)
      Overrides:
      eq in class NumericExpression
      Parameters:
      expr - the right-hand operand
      Returns:
      The type of an equality expression is a boolean

    • ne

      public BooleanExpression ne(SQLExpression expr)
      Description copied from class: SQLExpression
      Not equality operator (not equals to)
      Overrides:
      ne in class NumericExpression
      Parameters:
      expr - the right-hand operand
      Returns:
      The type of an equality expression is a boolean

    • lt

      public BooleanExpression lt(SQLExpression expr)
      Description copied from class: SQLExpression
      Relational operator (lower than)
      Overrides:
      lt in class NumericExpression
      Parameters:
      expr - the right-hand operand
      Returns:
      true if the value of the left-hand operand is less than the value of the right-hand operand, and otherwise is false.

    • le

      public BooleanExpression le(SQLExpression expr)
      Description copied from class: SQLExpression
      Relational operator (lower than or equals)
      Overrides:
      le in class NumericExpression
      Parameters:
      expr - the right-hand operand
      Returns:
      true if the value of the left-hand operand is less than or equal to the value of the right-hand operand, and otherwise is false.

    • gt

      public BooleanExpression gt(SQLExpression expr)
      Description copied from class: SQLExpression
      Relational operator (greater than)
      Overrides:
      gt in class NumericExpression
      Parameters:
      expr - the right-hand operand
      Returns:
      true if the value of the left-hand operand is greater than the value of the right-hand operand, and otherwise is false.

    • ge

      public BooleanExpression ge(SQLExpression expr)
      Description copied from class: SQLExpression
      Relational operator (greater than or equals)
      Overrides:
      ge in class NumericExpression
      Parameters:
      expr - the right-hand operand
      Returns:
      true if the value of the left-hand operand is greater than or equal the value of the right-hand operand, and otherwise is false.

    • invoke

      public SQLExpression invoke(String methodName, List args)
      Description copied from class: SQLExpression
      Invocation of a method on this expression.
      Overrides:
      invoke in class SQLExpression
      Parameters:
      methodName - name of the method to invoke
      args - Args to this method (if any)
      Returns:
      the converted value