public void LookupConstant(DotNode node)
{
string text = ASTUtil.GetPathText(node);
IQueryable persister = _walker.SessionFactoryHelper.FindQueryableUsingImports(text);
if (persister != null)
{
// the name of an entity class
string discrim = persister.DiscriminatorSQLValue;
node.DataType = persister.DiscriminatorType;
if (InFragment.Null == discrim || InFragment.NotNull == discrim)
{
throw new InvalidPathException("subclass test not allowed for null or not null discriminator: '" + text + "'");
}
else
{
SetSQLValue(node, text, discrim); //the class discriminator value
}
}
else
{
Object value = ReflectHelper.GetConstantValue(text);
if (value == null)
{
throw new InvalidPathException("Invalid path: '" + text + "'");
}
else
{
SetConstantValue(node, text, value);
}
}
}
/// <summary>
/// Turns a path into an AST.
/// </summary>
/// <param name="path">The path.</param>
/// <param name="factory">The AST factory to use.</param>
/// <returns>An HQL AST representing the path.</returns>
public static IASTNode ParsePath(string path, IASTFactory factory)
{
string[] identifiers = StringHelper.Split(".", path);
IASTNode lhs = null;
for (int i = 0; i < identifiers.Length; i++)
{
string identifier = identifiers[i];
IASTNode child = factory.CreateNode(HqlSqlWalker.IDENT, identifier);
if (i == 0)
{
lhs = child;
}
else
{
lhs = factory.CreateNode(HqlSqlWalker.DOT, ".", lhs, child);
}
}
if (log.IsDebugEnabled())
{
log.Debug("parsePath() : {0} -> {1}", path, ASTUtil.GetDebugstring(lhs));
}
return(lhs);
}
