public void BasicTest_ORDERBY()
{
SelectStmtInfo stmtInfo = new SelectStmtInfo();
stmtInfo.Columns.Add(new Column()
{
Expression = new ColumnExpression(ExpressionType.ColumnName)
{
ColumnName = "userId"
}
});
stmtInfo.Columns.Add(new Column()
{
Expression = new ColumnExpression(ExpressionType.ColumnName)
{
ColumnName = "userName"
}
});
stmtInfo.TableDescriptor = new TableDescriptor()
{
TableName = "me", TableReadType = TableReadType.NONE
};
stmtInfo.OrderBy.Add(new OrderByCondition()
{
Expression = "userId", Direction = OrderByDirection.ASC
});
IGenerator g = new DefaultSqlGenerator();
var sql = g.Generate(stmtInfo);
Assert.AreEqual("SELECT userId, userName FROM me ORDER BY userId ASC", sql);
}
public void BasicTest_Alias()
{
SelectStmtInfo stmtInfo = new SelectStmtInfo();
stmtInfo.Columns.Add(new Column()
{
Expression = new ColumnExpression(ExpressionType.ColumnName)
{
ColumnName = "userId"
}, HasAlias = true, Alias = "UID"
});
stmtInfo.Columns.Add(new Column()
{
Expression = new ColumnExpression(ExpressionType.ColumnName)
{
ColumnName = "userName"
}
});
stmtInfo.TableDescriptor = new TableDescriptor()
{
TableName = "me", TableReadType = TableReadType.NONE
};
IGenerator g = new DefaultSqlGenerator();
var sql = g.Generate(stmtInfo);
Assert.AreEqual("SELECT userId AS UID, userName FROM me", sql);
}
public void BasicTest_PREDICT_NO_WHERE_NO_ORDERBY()
{
SelectStmtInfo stmtInfo = new SelectStmtInfo();
stmtInfo.Column_PredictExists = true;
stmtInfo.Column_PredictWord = "DISTINCT";
stmtInfo.Columns.Add(new Column()
{
Expression = new ColumnExpression(ExpressionType.ColumnName)
{
ColumnName = "userId"
}
});
stmtInfo.Columns.Add(new Column()
{
Expression = new ColumnExpression(ExpressionType.ColumnName)
{
ColumnName = "userName"
}
});
stmtInfo.TableDescriptor = new TableDescriptor()
{
TableName = "me", TableReadType = TableReadType.NONE
};
IGenerator g = new DefaultSqlGenerator();
var sql = g.Generate(stmtInfo);
Assert.AreEqual("SELECT DISTINCT userId, userName FROM me", sql);
}
private static void SetDefaultSqlGenerator()
{
var currentLoadedAssemblies = AppDomain.CurrentDomain.GetAssemblies();
var loadedTypes = new List <Type>();
Type defaultSqlGeneratorType = null;
foreach (var assembly in currentLoadedAssemblies)
{
var loadableTypes = assembly.GetLoadableTypes();
if (loadableTypes != null && loadableTypes.FirstOrDefault(t => t.IsSubclassOf(typeof(DefaultSqlGenerator))) != null)
{
defaultSqlGeneratorType = loadableTypes.FirstOrDefault(t => t.IsSubclassOf(typeof(DefaultSqlGenerator)));
break;
}
}
DefaultSqlGenerator defaultSqlGenerator = null;
if (defaultSqlGeneratorType != null)
{
defaultSqlGenerator = (DefaultSqlGenerator)Activator.CreateInstance(defaultSqlGeneratorType);
if (defaultSqlGenerator != null)
{
defaultSqlGenerator.SetSqlGenerator();
SqlGenerator = defaultSqlGenerator.Generator;
return;
}
}
SqlGenerator = new SqlServerSqlGenerator();
}
static void Main(string[] args)
{
string sql = @"select * from [me]";
var info = SQLParser.ParseSQL(sql);
var generator = new DefaultSqlGenerator();
Console.WriteLine(generator.Generate(info));
}
public void BasicTest_2_Condition()
{
SelectStmtInfo stmtInfo = new SelectStmtInfo();
stmtInfo.Columns.Add(new Column()
{
Expression = new ColumnExpression(ExpressionType.ColumnName)
{
ColumnName = "userId"
}
});
stmtInfo.Columns.Add(new Column()
{
Expression = new ColumnExpression(ExpressionType.ColumnName)
{
ColumnName = "userName"
}
});
stmtInfo.TableDescriptor = new TableDescriptor()
{
TableName = "me", TableReadType = TableReadType.NONE
};
stmtInfo.WhereCondition = new WhereCondition(WhereConditionNodeType.Statement);
stmtInfo.WhereCondition.Statement_Operator = "AND";
stmtInfo.WhereCondition.Statement_LeftNode = new WhereCondition(WhereConditionNodeType.Condition);
stmtInfo.WhereCondition.Statement_LeftNode.Condition_LeftExpression = "userId";
stmtInfo.WhereCondition.Statement_LeftNode.Condition_Operator = ">";
stmtInfo.WhereCondition.Statement_LeftNode.Condition_RightExpression = "5";
stmtInfo.WhereCondition.Statement_RightNode = new WhereCondition(WhereConditionNodeType.Condition);
stmtInfo.WhereCondition.Statement_RightNode.Condition_LeftExpression = "sex";
stmtInfo.WhereCondition.Statement_RightNode.Condition_Operator = "=";
stmtInfo.WhereCondition.Statement_RightNode.Condition_RightExpression = "1";
stmtInfo.OrderBy.Add(new OrderByCondition()
{
Expression = "userId", Direction = OrderByDirection.ASC
});
IGenerator g = new DefaultSqlGenerator();
var sql = g.Generate(stmtInfo);
Assert.AreEqual("SELECT userId, userName FROM me WHERE (userId>5) AND (sex=1) ORDER BY userId ASC", sql);
}