Exemplo n.º 1
0
        public override bool Equals(object obj)
        {
            if (!(obj is PropertyFragment))
            {
                return(false);
            }
            PropertyFragment prop = obj as PropertyFragment;

            Debug.Assert(Properties != null && prop.Properties != null);
            int aIndex = Properties.Count - 1;
            int bIndex = prop.Properties.Count - 1;
            int cnt    = 0;

            while (aIndex >= 0 && bIndex >= 0)
            {
                if (String.Compare(Properties[aIndex--], prop.Properties[bIndex--], true) != 0)
                {
                    return(false);
                }
                if (++cnt == 2)
                {
                    break;
                }
            }
            return(true);
        }
Exemplo n.º 2
0
 public void PushInput(string inputName)
 {
     if (PropertyFragment == null)
     {
         PropertyFragment = new PropertyFragment();
     }
     PropertyFragment.PushProperty(inputName);
 }
Exemplo n.º 3
0
        public PropertyFragment Clone()
        {
            PropertyFragment newPF = new PropertyFragment();

            foreach (string prop in Properties)
            {
                newPF.Properties.Add(prop);
            }
            return(newPF);
        }
Exemplo n.º 4
0
        public ColumnFragment GetColumnFromProperties(PropertyFragment properties)
        {
            ColumnFragment col = Left.GetColumnFromProperties(properties);

            if (col == null)
            {
                col = Right.GetColumnFromProperties(properties);
            }
            return(col);
        }
Exemplo n.º 5
0
        public override SqlFragment Visit(DbPropertyExpression expression)
        {
            propertyLevel++;
            PropertyFragment fragment = expression.Instance.Accept(this) as PropertyFragment;

            fragment.Properties.Add(expression.Property.Name);
            propertyLevel--;

            // if we are not at the top level property then just return
            if (propertyLevel > 0)
            {
                return(fragment);
            }

            ColumnFragment column = new ColumnFragment(null, fragment.LastProperty);

            column.PropertyFragment = fragment;
            InputFragment input = scope.FindInputFromProperties(fragment);

            if (input != null)
            {
                column.TableName = input.Name;
            }

            // now we need to check if our column name was possibly renamed
            if (input is TableFragment)
            {
                if (!string.IsNullOrEmpty(input.Name))
                {
                    SelectStatement sf = scope.GetFragment(input.Name) as SelectStatement;
                    if (sf != null)
                    {
                        // Special case: undo alias in case of query fusing
                        for (int i = 0; i < sf.Columns.Count; i++)
                        {
                            ColumnFragment cf = sf.Columns[i];
                            if (column.ColumnName == cf.ColumnAlias)
                            {
                                column.ColumnName  = cf.ColumnName;
                                column.ColumnAlias = cf.ColumnAlias;
                                column.TableName   = input.Name;
                                return(column);
                            }
                        }
                    }
                }
                return(column);
            }

            SelectStatement select = input as SelectStatement;
            UnionFragment   union  = input as UnionFragment;

            if (select != null)
            {
                select.HasDifferentNameForColumn(column);
            }
            else if (union != null)
            {
                union.HasDifferentNameForColumn(column);
            }

            // input is a table, selectstatement, or unionstatement
            return(column);
        }