/// <summary>
/// Parses the given command text to build a command builder.
/// </summary>
/// <param name="commandText">The command text to parse.</param>
/// <param name="options">Configures the behavior of the command builder.</param>
/// <returns>The command that was parsed.</returns>
public ICommand GetCommand(string commandText, CommandBuilderOptions options = null)
{
this.scope = new SourceScope();
this.options = options ?? new CommandBuilderOptions();
ITokenSource tokenSource = Grammar.TokenRegistry.CreateTokenSource(commandText);
MatchResult result = GetResult(tokenSource);
return buildStart(result);
}
public ICommand Parse(string sqlCommandText, string placeholderToken)
{
var commandText = sqlCommandText;
var commandBuilder = new CommandBuilder();
var options = new CommandBuilderOptions();
options.PlaceholderPrefix = placeholderToken;
var builder = commandBuilder.GetCommand(commandText, options);
return builder;
}
private ICrmOperation GetOperationFromTextCommand(CrmDbCommand command, CommandBehavior behavior)
{
// We actually need to parse the SQL, and then build the appropriate organisation request.
var commandText = command.CommandText;
// Use SQLGeneration to parse the SQL command into a Visitable Builder.
var commandBuilder = new CommandBuilder();
var options = new CommandBuilderOptions();
options.PlaceholderPrefix = ParameterToken;
var sqlCommandBuilder = commandBuilder.GetCommand(commandText, options);
// Visit the builder with out custom visiter that will build the appropriate org request whilst visiting.
var visitor = GetVisitor(command);
if (visitor == null)
{
throw new InvalidOperationException("visitor was null");
}
sqlCommandBuilder.Accept(visitor);
// The visitor should now have vuild the OrgCommand that we need.
var orgCommand = visitor.CrmOperation;
if (orgCommand == null || orgCommand.Request == null)
{
throw new NotSupportedException("Could not translate the command into the appropriate Organization Service Request Message");
}
// Before returning the command, ensure some additional properties are set.
orgCommand.DbCommand = command;
orgCommand.CommandBehavior = behavior;
return orgCommand;
}
public void TestSelect_LikeFilter_CompareToParameter()
{
string commandText = "SELECT Column FROM Table WHERE Column1 LIKE @Parameter";
CommandBuilderOptions options = new CommandBuilderOptions()
{
PlaceholderPrefix = "@"
};
assertCanReproduce(commandText, options);
}
private void assertCanReproduce(string commandText, CommandBuilderOptions options = null)
{
CommandBuilder builder = new CommandBuilder();
ICommand command = builder.GetCommand(commandText, options);
Formatter formatter = new Formatter();
string actual = formatter.GetCommandText(command);
Assert.AreEqual(commandText, actual, "The command builder did not generate the original command text.");
}
