public override IQueryable <TEntity> ApplyWhere(IQueryable <TEntity> query, IFilterForm filteringForm)
{
var pageForm = filteringForm as IPageForm;
if (pageForm == null)
{
throw new QuerySearchException("The IFilterForm must also implement IPageFrom in order to support FtsQuerySearchProvider.");
}
// keep track of the untouched query
var untouchedQuery = query;
// we only need to perform this 'special' filtering in case there is a term
var rawTerm = filteringForm.GetTerm();
var term = GetSearchExpression(rawTerm);
if (!string.IsNullOrWhiteSpace(term))
{
// rewrite the 'base query' to include a full text filter (will be placed in a sub query)
string baseQuery = CreateBaseQuery(rawTerm);
query = query.FromSql(baseQuery, term);
// apply the default where clause onto the query (will be placed in an outer query)
query = base.ApplyWhere(query, filteringForm);
// get the sql representing the query
var sql = query.ToSql();
// create a reader for our sql, and a builder to build a new query
var reader = new StringReader(sql);
var builder = new StringBuilder();
builder.AppendLine(baseQuery);
// variable to keep track of the alias used for the table in the outer query
string usedAlias = string.Empty;
// variable to keep track of whether or not the sql line we are iterating should be part of the new sql statement
bool iteratingRelevantSql = false;
string line = null;
while ((line = reader.ReadLine()) != null)
{
if (line.StartsWith(") AS "))
{
// this line marks the start of WHERE/ORDER BY/WHATEVER of the outer query
usedAlias = line.Substring(5);
iteratingRelevantSql = true;
}
else if (iteratingRelevantSql)
{
// this writes the WHERE clause + other stuff
builder.AppendLine(line.Replace(usedAlias, TableAlias));
}
}
// Use the untouched query and append our own homebrew where clause
return(untouchedQuery.FromSql(builder.ToString(), term));
}
else
{
// no special filtering to be performed
return(base.ApplyWhere(query, filteringForm));
}
}
public void ShowForm(XtraForm MdiParent, Type FormType,
Type EntityType, DataPersistance dp,
Type FilterFormType, string DataFilter)
{
_Evaluator = new Evaluator();
Dp = dp;
this.DataFilter = DataFilter;
comboBoxEdit1.Properties.Items.Add("(Layout Default)");
if (EntityType != null)
{
_FormType = FormType;
_EntityType = EntityType;
td = MetaData.GetTableDef(EntityType);
Dp.ValidateTableDef(td);
if (td.fldTransactionDate != null)
{
dateEdit1.DateTime = DateTime.Today;
dateEdit2.DateTime = DateTime.Today;
}
else
{
label3.Visible = false;
label4.Visible = false;
dateEdit1.Visible = false;
dateEdit2.Visible = false;
}
_ReportName = BaseUtility.SplitName(_EntityType.Name);
}
else
{
label3.Visible = false;
label4.Visible = false;
dateEdit1.Visible = false;
dateEdit2.Visible = false;
if (FilterFormType != null)
{
_ReportName = FilterFormType.Name.Substring(0, 3).ToLower();
if (_ReportName == "frm" || _ReportName == "rpt")
{
_ReportName = BaseUtility.SplitName(
FilterFormType.Name.Substring(3));
}
else
{
_ReportName = BaseUtility.SplitName(FilterFormType.Name);
}
}
else
{
_ReportName = "Bebas";
}
}
Text = "Laporan " + _ReportName;
comboBoxEdit1.Properties.Items.AddRange(
DocBrowseLayout.GetListLayout(_ReportName));
this.MdiParent = MdiParent;
if (FilterFormType == null)
{
splitContainerControl1.PanelVisibility = SplitPanelVisibility.Panel2;
}
else
{
_FilterForm = BaseFactory.CreateInstance(FilterFormType) as IFilterForm;
if (_FilterForm == null)
{
XtraMessageBox.Show("Form Filter harus implement Interface IFilterForm !",
"Error Filter", MessageBoxButtons.OK, MessageBoxIcon.Error);
Close();
return;
}
XtraForm Frm = _FilterForm as XtraForm;
if (Frm != null)
{
Frm.FormBorderStyle = FormBorderStyle.None;
Frm.TopLevel = false;
Frm.Parent = xtraScrollableControl1;
splitContainerControl1.SplitterPosition = Frm.Height + 5;
Frm.KeyPreview = true;
Frm.KeyDown += new KeyEventHandler(frmGridReport_KeyDown);
xtraScrollableControl1.BackColor = Frm.BackColor;
Frm.Show();
}
else
{
splitContainerControl1.PanelVisibility = SplitPanelVisibility.Panel2;
}
}
barButtonItem8_ItemClick(null, null);
DefaultLayout = new MemoryStream();
pivotGridControl1.SaveLayoutToStream(DefaultLayout);
string CurrBrowseLayoutId = string.Empty;
bool Tmp;
DocDefault.GetDefaultLayout(_ReportName,
out CurrBrowseLayoutId, out CurrPrintLayoutId, out Tmp);
Show();
comboBoxEdit1.SelectedItem = CurrBrowseLayoutId;
if (comboBoxEdit1.SelectedIndex < 0)
{
comboBoxEdit1.SelectedIndex = 0;
}
textEdit1.Focus();
}
/// <summary>
/// Applies filtering to the IQueryable provided.
/// </summary>
/// <param name="query">The IQueryable that is to be filtered.</param>
/// <param name="filteringForm">The filtering form.</param>
/// <returns>A filtered IQueryable.</returns>
public virtual IQueryable <TEntity> ApplyWhere(IQueryable <TEntity> query, IFilterForm filteringForm)
{
var term = filteringForm.GetTerm();
var words = GetWords(term);
if (_getApplyWhere != null && term != null)
{
var applyWhere = _getApplyWhere(term);
query = applyWhere(query);
}
// create predicate1 (word expressions)
Expression <Func <TEntity, bool> > predicate1 = null;
if (_getFreeWordPredicate != null)
{
foreach (var word in words)
{
predicate1 = AddExpression(predicate1, _getFreeWordPredicate(word), WordCombiner == WordSearchCombiner.And ? ExpressionType.AndAlso : ExpressionType.OrElse);
}
}
// create predicate2 (sentence expression)
Expression <Func <TEntity, bool> > predicate2 = null;
if (_getFreeSentencePredicate != null && term != null)
{
predicate2 = _getFreeSentencePredicate(term);
}
// create predicate1 OR predicate2 as currentBody
Expression <Func <TEntity, bool> > textPredicate = null;
if (predicate1 != null && predicate2 != null)
{
textPredicate = predicate1.Or(predicate2);
}
else if (predicate1 != null)
{
textPredicate = predicate1;
}
else if (predicate2 != null)
{
textPredicate = predicate2;
}
var localizations = GetLocalizationDictionary();
Expression <Func <TEntity, bool> > keywordPredicate = null;
for (int i = 0; i < words.Length; i++)
{
for (int j = i; j < words.Length; j++)
{
// from i to j
var word = string.Join(" ", words, i, j - i + 1);
Expression <Func <TEntity, bool> > predicate;
if (_predefinedPredicates.TryGetValue(word, out predicate))
{
keywordPredicate = AddExpression(keywordPredicate, predicate, ExpressionType.AndAlso);
}
Expression <Func <TEntity, bool> > localizedPredicate;
if (localizations.TryGetValue(word, out localizedPredicate))
{
keywordPredicate = AddExpression(keywordPredicate, localizedPredicate, ExpressionType.AndAlso);
}
}
}
// create textPredicate OR keywordPredicate as currentBody
Expression <Func <TEntity, bool> > currentBody = null;
if (textPredicate != null && keywordPredicate != null)
{
currentBody = textPredicate.Or(keywordPredicate);
}
else if (textPredicate != null)
{
currentBody = textPredicate;
}
else if (keywordPredicate != null)
{
currentBody = keywordPredicate;
}
if (currentBody != null)
{
query = query.Where(currentBody);
}
var parameters = filteringForm.GetAdditionalFilters();
if (parameters != null)
{
foreach (var propertyComparison in parameters)
{
var comparisonType = propertyComparison.GetComparisonType();
var memberAccess = propertyComparison.GetMemberAccess(_parameter);
var propertyValue = propertyComparison.GetValue();
var memberAccessor = memberAccess.MemberAccessor;
if (memberAccessor != null)
{
var propertyType = memberAccess.MemberType;
var unwrappedPropertyType = propertyType.GetTypeInfo().IsGenericType&& propertyType.GetGenericTypeDefinition() == typeof(Nullable <>)
? propertyType.GetTypeInfo().GetGenericArguments()[0]
: propertyType;
object convertedPropertyValue;
if (propertyValue is string && (memberAccessor.Type == typeof(Guid) || memberAccessor.Type == typeof(Guid? )))
{
convertedPropertyValue = Guid.Parse((string)propertyValue);
}
else
{
convertedPropertyValue = Convert.ChangeType(propertyValue, memberAccessor.Type);
}
var parameterizedPropertyValue = ExpressionHelper.WrappedConstant(memberAccessor.Type, convertedPropertyValue);
Expression left = null;
switch (comparisonType)
{
case ComparisonType.Equal:
left = Expression.Equal(memberAccessor, parameterizedPropertyValue);
break;
case ComparisonType.GreaterThan:
left = Expression.GreaterThan(memberAccessor, parameterizedPropertyValue);
break;
case ComparisonType.GreaterThanOrEqual:
left = Expression.GreaterThanOrEqual(memberAccessor, parameterizedPropertyValue);
break;
case ComparisonType.LessThan:
left = Expression.LessThan(memberAccessor, parameterizedPropertyValue);
break;
case ComparisonType.LessThanOrEqual:
left = Expression.LessThanOrEqual(memberAccessor, parameterizedPropertyValue);
break;
case ComparisonType.StartsWith:
left = Expression.Call(memberAccessor, StartsWith, parameterizedPropertyValue);
break;
case ComparisonType.Contains:
left = Expression.Call(memberAccessor, Contains, parameterizedPropertyValue);
break;
default:
throw new InvalidOperationException($"Invalid comparison type '{comparisonType}'.");
}
var expression = Expression.Lambda <Func <TEntity, bool> >(left, _parameter);
query = query.Where(expression);
}
else
{
query = ApplyManualFiltering(query, memberAccess.PropertyPath, propertyValue);
}
}
}
return(query);
}
