public void SelectStringSqlTest()
{
Configuration cfg = new Configuration();
ISessionFactory factory = cfg.BuildSessionFactory();
ISessionFactoryImplementor factoryImpl = (ISessionFactoryImplementor) factory;
SqlSelectBuilder select = new SqlSelectBuilder(factoryImpl);
select.SetSelectClause("column1, column2");
select.SetFromClause("select_test", "select_test_alias");
select.SetOuterJoins(
new SqlString(" LEFT OUTER JOIN before ON select_test_alias.column1 = before.column1"),
new SqlString(" after.some_field = after.another_field "));
select.SetOrderByClause(new SqlString("column1 DESC"));
select.SetWhereClause("select_test_alias", new string[] {"identity_column"}, NHibernateUtil.Int64);
SqlString sqlString = select.ToSqlString();
string expectedSql = new StringBuilder().Append("SELECT ")
.Append("column1, column2 ")
.Append("FROM select_test select_test_alias ")
.Append("LEFT OUTER JOIN before ON select_test_alias.column1 = before.column1 ")
.Append("WHERE ")
.Append("after.some_field = after.another_field")
.Append(" AND ")
.Append("select_test_alias.identity_column = ? ")
.Append("ORDER BY column1 DESC")
.ToString();
Assert.AreEqual(expectedSql, sqlString.ToString(), "SQL String");
Assert.AreEqual(1, sqlString.GetParameterCount(), "One parameter");
}
public void SelectStringSqlTest()
{
Configuration cfg = new Configuration();
ISessionFactory factory = cfg.BuildSessionFactory( );
ISessionFactoryImplementor factoryImpl = (ISessionFactoryImplementor)factory;
SqlSelectBuilder select = new SqlSelectBuilder(factoryImpl);
select.SetSelectClause("column1, column2");
select.SetFromClause("select_test", "select_test_alias");
select.SetOuterJoins( new SqlString(" LEFT OUTER JOIN before ON select_test_alias.column1 = before.column1"), new SqlString(" LEFT OUTER JOIN after ON select_test_alias.column1 = after.column1") );
select.SetOrderByClause("column1 DESC");
select.SetWhereClause("select_test_alias", new string[] {"identity_column"}, NHibernateUtil.Int64);
SqlString sqlString = select.ToSqlString();
string expectedSql = new StringBuilder().Append("SELECT ")
.Append("column1, column2 ")
.Append("FROM select_test select_test_alias ")
.Append("LEFT OUTER JOIN before ON select_test_alias.column1 = before.column1 ")
.Append("WHERE select_test_alias.identity_column = :select_test_alias.identity_column ")
.Append("LEFT OUTER JOIN after ON select_test_alias.column1 = after.column1 ")
.Append("ORDER BY column1 DESC")
.ToString();
int numOfParams = 0;
Parameter expectedParam = null;
foreach(object part in sqlString.SqlParts)
{
if(part is Parameter)
{
numOfParams++;
expectedParam = (Parameter)part;
}
}
Assert.AreEqual(expectedSql , sqlString.ToString(), "SQL String");
Assert.AreEqual(1, numOfParams, "One parameter");
Parameter firstParam = new Parameter( "identity_column", "select_test_alias", new SqlTypes.Int64SqlType() );
Assert.AreEqual(firstParam.SqlType.DbType, expectedParam.SqlType.DbType, "First Parameter Type");
Assert.AreEqual(firstParam.Name, expectedParam.Name, "First Parameter Name");
}
public virtual object[] GetNaturalIdentifierSnapshot(object id, ISessionImplementor session)
{
if (!HasNaturalIdentifier)
{
throw new MappingException("persistent class did not define a natural-id : " + MessageHelper.InfoString(this));
}
if (log.IsDebugEnabled)
{
log.Debug("Getting current natural-id snapshot state for: " + MessageHelper.InfoString(this, id, Factory));
}
int[] naturalIdPropertyIndexes = NaturalIdentifierProperties;
int naturalIdPropertyCount = naturalIdPropertyIndexes.Length;
bool[] naturalIdMarkers = new bool[PropertySpan];
IType[] extractionTypes = new IType[naturalIdPropertyCount];
for (int i = 0; i < naturalIdPropertyCount; i++)
{
extractionTypes[i] = PropertyTypes[naturalIdPropertyIndexes[i]];
naturalIdMarkers[naturalIdPropertyIndexes[i]] = true;
}
///////////////////////////////////////////////////////////////////////
// TODO : look at perhaps caching this...
SqlSelectBuilder select = new SqlSelectBuilder(Factory);
if (Factory.Settings.IsCommentsEnabled)
{
select.SetComment("get current natural-id state " + EntityName);
}
select.SetSelectClause(ConcretePropertySelectFragmentSansLeadingComma(RootAlias, naturalIdMarkers));
select.SetFromClause(FromTableFragment(RootAlias) + FromJoinFragment(RootAlias, true, false));
string[] aliasedIdColumns = StringHelper.Qualify(RootAlias, IdentifierColumnNames);
SqlString whereClause = new SqlStringBuilder()
.Add(StringHelper.Join(new SqlString("=", Parameter.Placeholder, " and "), aliasedIdColumns))
.Add("=").AddParameter()
.Add(WhereJoinFragment(RootAlias, true, false))
.ToSqlString();
SqlString sql = select.SetOuterJoins(SqlString.Empty, SqlString.Empty).SetWhereClause(whereClause).ToStatementString();
///////////////////////////////////////////////////////////////////////
object[] snapshot = new object[naturalIdPropertyCount];
using (new SessionIdLoggingContext(session.SessionId))
try
{
IDbCommand ps = session.Batcher.PrepareCommand(CommandType.Text, sql, IdentifierType.SqlTypes(factory));
IDataReader rs = null;
try
{
IdentifierType.NullSafeSet(ps, id, 0, session);
rs = session.Batcher.ExecuteReader(ps);
//if there is no resulting row, return null
if (!rs.Read())
{
return null;
}
for (int i = 0; i < naturalIdPropertyCount; i++)
{
snapshot[i] =
extractionTypes[i].Hydrate(rs, GetPropertyAliases(string.Empty, naturalIdPropertyIndexes[i]), session, null);
if (extractionTypes[i].IsEntityType)
{
snapshot[i] = extractionTypes[i].ResolveIdentifier(snapshot[i], session, null);
}
}
return snapshot;
}
finally
{
session.Batcher.CloseCommand(ps, rs);
}
}
catch (DbException sqle)
{
var exceptionContext = new AdoExceptionContextInfo
{
SqlException = sqle,
Message = "could not retrieve snapshot: " + MessageHelper.InfoString(this, id, Factory),
Sql = sql.ToString(),
EntityName = EntityName,
EntityId = id
};
throw ADOExceptionHelper.Convert(Factory.SQLExceptionConverter, exceptionContext);
}
}
protected SqlString RenderSelect(int[] tableNumbers, int[] columnNumbers, int[] formulaNumbers)
{
Array.Sort(tableNumbers); //get 'em in the right order (not that it really matters)
//render the where and from parts
int drivingTable = tableNumbers[0];
string drivingAlias = GenerateTableAlias(RootAlias, drivingTable); //we *could* regenerate this inside each called method!
SqlString where = CreateWhereByKey(drivingTable, drivingAlias);
string from = CreateFrom(drivingTable, drivingAlias);
//now render the joins
JoinFragment jf = CreateJoin(tableNumbers, drivingAlias);
//now render the select clause
SelectFragment selectFragment = CreateSelect(columnNumbers, formulaNumbers);
//now tie it all together
SqlSelectBuilder select = new SqlSelectBuilder(Factory);
select.SetSelectClause(selectFragment.ToFragmentString().Substring(2));
select.SetFromClause(from);
select.SetWhereClause(where);
select.SetOuterJoins(jf.ToFromFragmentString, jf.ToWhereFragmentString);
if (Factory.Settings.IsCommentsEnabled)
{
select.SetComment("sequential select " + EntityName);
}
return select.ToSqlString();
}
