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public Prepare ( IExpressionPreparer preparer ) : |
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| preparer | IExpressionPreparer | |
| return | ||
private SqlExpression PrepareSearchExpression(IQueryContext context, QueryExpressionFrom queryFrom, SqlExpression expression)
{
// first check the expression is not null
if (expression == null)
return null;
// This is used to prepare sub-queries and qualify variables in a
// search expression such as WHERE or HAVING.
// Prepare the sub-queries first
expression = expression.Prepare(new QueryExpressionPreparer(this, queryFrom, context));
// Then qualify all the variables. Note that this will not qualify
// variables in the sub-queries.
expression = expression.Prepare(queryFrom.ExpressionPreparer);
return expression;
}