/// <summary>
/// Handle parameter query object before use
/// </summary>
/// <param name="parameterQuery">Parameter query</param>
/// <param name="parameterQueryOption">Parameter query option</param>
/// <returns>Return the newest query object</returns>
internal static TQuery HandleParameterQueryBeforeUse <TQuery>(TQuery parameterQuery, QueryParameterOptions parameterQueryOption) where TQuery : IQuery
{
if (parameterQuery == null)
{
return(parameterQuery);
}
if (EnableCopyParameterQueryObject)
{
parameterQuery = (TQuery)parameterQuery.Clone();
}
if (parameterQueryOption != null)
{
if (!string.IsNullOrWhiteSpace(parameterQueryOption.QueryFieldName))
{
parameterQuery.ClearQueryFields();
parameterQuery.AddQueryFields(parameterQueryOption.QueryFieldName);
}
}
return(parameterQuery);
}
/// <summary>
/// Add queryInfo query item handler
/// </summary>
/// <param name="originalQuery">Original query</param>
/// <param name="queryItem">Parameter query item</param>
/// <param name="parameterQueryOption">Parameter query option</param>
static IQueryItem AddQueryInfoQueryItemHandler(DefaultQuery originalQuery, IQueryItem queryItem, QueryParameterOptions parameterQueryOption)
{
if (originalQuery == null || queryItem == null)
{
return(null);
}
DefaultQuery valueQuery = queryItem as DefaultQuery;
valueQuery = HandleParameterQueryBeforeUse(valueQuery, parameterQueryOption);
valueQuery.SetEntityType(originalQuery.entityType);
originalQuery.SetHasSubQuery(originalQuery.HasSubquery || valueQuery.HasSubquery);
originalQuery.SetHasJoin(originalQuery.HasJoin || valueQuery.HasJoin);
originalQuery.SetHasRecurveCriteria(originalQuery.HasRecurveCriteria || valueQuery.HasRecurveCriteria);
originalQuery.equalCriteriaCollection.AddRange(valueQuery.equalCriteriaCollection);
originalQuery.atomicConditionCount += valueQuery.AtomicConditionCount;
originalQuery.allConditionFieldNameCollection.AddRange(valueQuery.AllConditionFieldNames);
originalQuery.alreadySetGlobalCondition |= valueQuery.alreadySetGlobalCondition;
originalQuery.SetHasConverter(originalQuery.HasConverter || valueQuery.HasConverter);
return(valueQuery);
}
/// <summary>
/// Add a IQueryItem
/// </summary>
/// <param name="queryOperator">Connect operator</param>
/// <param name="queryItem">query item</param>
/// <param name="queryOption">query parameter option</param>
public IQuery AddQueryItem(QueryOperator queryOperator, IQueryItem queryItem, QueryParameterOptions queryOption = null)
{
#region invoke handler
var queryItemTypeId = queryItem?.GetType().GUID ?? Guid.Empty;
Func <DefaultQuery, IQueryItem, QueryParameterOptions, IQueryItem> handler = null;
QueryManager.AddQueryItemHandlers?.TryGetValue(queryItemTypeId, out handler);
if (handler != null)
{
queryItem = handler(this, queryItem, queryOption);
}
#endregion
if (queryItem != null)
{
//clear data
queryExpressionCaches?.Clear();
criteriaCollection.Add(new Tuple <QueryOperator, IQueryItem>(queryOperator, queryItem));
}
return(this);
}
/// <summary>
/// Add criteria query item handler
/// </summary>
/// <param name="originalQuery">Original query</param>
/// <param name="queryItem">Parameter query item</param>
/// <param name="parameterQueryOption">Parameter query option</param>
static IQueryItem AddCriteriaQueryItemHandler(DefaultQuery originalQuery, IQueryItem queryItem, QueryParameterOptions parameterQueryOption)
{
if (originalQuery == null || queryItem == null)
{
return(null);
}
Criteria criteria = queryItem as Criteria;
var queryValue = criteria.Value as IQuery;
originalQuery.SetHasConverter(originalQuery.HasConverter || criteria.Converter != null);
if (queryValue != null)
{
if (queryValue.GetEntityType() == null)
{
throw new EZNEWException("the IQuery object used for the subquery must set the property EntityType");
}
queryValue = HandleParameterQueryBeforeUse(queryValue, parameterQueryOption);
criteria.SetValue(queryValue);
originalQuery.subqueryCollection.Add(queryValue);
originalQuery.SetHasSubQuery(true);
originalQuery.SetHasJoin(originalQuery.HasJoin || queryValue.HasJoin);
originalQuery.SetHasRecurveCriteria(originalQuery.HasRecurveCriteria || queryValue.HasRecurveCriteria);
originalQuery.SetHasConverter(originalQuery.HasConverter || queryValue.HasConverter);
}
else
{
bool equalCriterial = false;
bool verifyValueNull = false;
CriteriaOperator verifyValueNullOperator = CriteriaOperator.IsNull;
switch (criteria.Operator)
{
case CriteriaOperator.Equal:
equalCriterial = true;
verifyValueNull = true;
break;
case CriteriaOperator.NotEqual:
verifyValueNull = true;
verifyValueNullOperator = CriteriaOperator.NotNull;
break;
case CriteriaOperator.In:
equalCriterial = true;
break;
}
if (criteria.GetCriteriaRealValue() == null && verifyValueNull)
{
equalCriterial = false;
criteria.Operator = verifyValueNullOperator;
}
if (equalCriterial)
{
originalQuery.equalCriteriaCollection.Add(criteria);
}
}
originalQuery.atomicConditionCount++;
originalQuery.allConditionFieldNameCollection.Add(criteria.Name);
return(criteria);
}
/// <summary>
/// Add a criteria
/// </summary>
/// <param name="queryOperator">Connect operator</param>
/// <param name="fieldName">Field name</param>
/// <param name="criteriaOperator">Condition operator</param>
/// <param name="value">Value</param>
/// <param name="converter">Converter</param>
/// <param name="queryOption">query parameter option</param>
public IQuery AddCriteria(QueryOperator queryOperator, string fieldName, CriteriaOperator criteriaOperator, dynamic value, ICriteriaConverter converter = null, QueryParameterOptions queryOption = null)
{
if (string.IsNullOrWhiteSpace(fieldName))
{
return(this);
}
Criteria newCriteria = Criteria.CreateNewCriteria(fieldName, criteriaOperator, value);
newCriteria.Converter = converter;
return(AddQueryItem(queryOperator, newCriteria, queryOption));
}
