public IStatement Execute()
{
IParser parser = null;
if (_tokenizer.TokenEquals(Constants.Table))
{
parser = new CreateTableStatementParser(_tokenizer);
}
if (_tokenizer.TokenEquals(Constants.View))
{
parser = new CreateViewStatementParser(_tokenizer);
}
//if ( _tokenizer.TokenEquals( Constants.Procedure ) )
// parser = new CreateProcedureStatementParser( _tokenizer );
//if ( _tokenizer.TokenEquals( Constants.Trigger ) )
// parser = new CreateTriggerStatementParser( _tokenizer );
if (_tokenizer.IsNextToken(
Constants.Unique,
Constants.Clustered,
Constants.NonClustered,
Constants.Index
)
)
{
parser = new CreateIndexParser(_tokenizer);
}
return(parser != null?parser.Execute() : null);
}
public IStatement Execute()
{
IParser parser = null;
if (_tokenizer.TokenEquals(Constants.Table))
{
parser = new AlterTableStatementParser(_tokenizer);
}
if (_tokenizer.TokenEquals(Constants.View))
{
parser = new CreateViewStatementParser(_tokenizer)
{
IsAlter = true
}
}
;
if (_tokenizer.TokenEquals(Constants.Procedure) || _tokenizer.TokenEquals(Constants.Proc))
{
parser = new CreateProcedureStatementParser(_tokenizer)
{
IsAlter = true
}
}
;
//if ( _tokenizer.TokenEquals( Constants.Trigger ) )
// parser = new AlterTriggerStatementParser( _tokenizer );
return(parser != null?parser.Execute() : null);
}
}
}