org.datanucleus.store.rdbms.sql.operation
Class NumericToStringOperation

java.lang.Object
  org.datanucleus.store.rdbms.sql.operation.AbstractSQLOperation
      org.datanucleus.store.rdbms.sql.operation.NumericToStringOperation

All Implemented Interfaces:

SQLOperation

public class NumericToStringOperation
extends AbstractSQLOperation

Implementation of a conversion from a NumericExpression to a StringExpression. Results in

CAST(expr AS VARCHAR(4000))

The second expression argument is not used; the first arg is converted to a StringExpression.

Field Summary

Fields inherited from class org.datanucleus.store.rdbms.sql.operation.AbstractSQLOperation

exprFactory

Constructor Summary

NumericToStringOperation()

Method Summary

SQLExpression

getExpression(SQLExpression expr, SQLExpression expr2) Return the expression for this SQL function.

Methods inherited from class org.datanucleus.store.rdbms.sql.operation.AbstractSQLOperation

getMappingForClass, setExpressionFactory

Methods inherited from class java.lang.Object

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

Constructor Detail

NumericToStringOperation

public NumericToStringOperation()

Method Detail

getExpression

public SQLExpression getExpression(SQLExpression expr,
                                   SQLExpression expr2)

Description copied from interface: SQLOperation

Return the expression for this SQL function.

Parameters:

expr - Left hand expression

expr2 - Right hand expression

Returns:

The SQL expression for the operation