public Dict ConvertParamsToDict(dynamic statementParams, bool allowKeyValueAsSourceParams = true)
{
// If statementParams is null, return empty dictionary
if (statementParams == null)
{
return(new Dict());
}
// If statementParams is already a dictionary, return the dictionary
else if (statementParams is Dict d)
{
return(new Dict(d));
}
// If statementParams is a single string, assume it is a primary key value
else if (statementParams is string keyValue)
{
if (!allowKeyValueAsSourceParams)
{
throw new Exception("Statement doesn't allow passing single key value as source params");
}
if (this.StatementFromRefs.Length != 1)
{
throw new Exception("Statement must have exactly one table to pass single string value as where condition");
}
return(DictionaryX.ParseKeyValue(keyValue, this.StatementFromRefs[0].table.Indexes[0].FieldNames));
}
// Otherwise, convert statementParams to a dictionary
else
{
return(DynamicX.ToDictionary(statementParams));
}
}
private static bool Contains(
Dictionary <string, string> properties, string virtualProperty)
{
return(DictionaryX.FindAll <string, string>(
properties,
delegate(KeyValuePair <string, string> pair) {
bool value;
return pair.Key == virtualProperty &&
Boolean.TryParse(pair.Value, out value) &&
value;
}).Count > 0);
}
/*
* Given this SQL...
*
* SELECT e.name, d.name
* FROM employee e
* LEFT JOIN department d ON e.department_id=d.id
* WHERE e.name LIKE 'm%'
*
* An event on employee would be checked by running...
*
* SELECT e.name, d.name
* FROM employee e
* LEFT JOIN department d ON e.department_id=d.id
* WHERE e.name LIKE 'm%' AND e.id='123'
*
* An event on department would be checked by running...
*
* SELECT e.name, d.name
* FROM employee e
* LEFT JOIN department d ON e.department_id=d.id AND d.id='456'
* WHERE e.name LIKE 'm%'
*
*/
internal async Task <Dict[]> GetImpactedRecordsAsync(KeyValueDataEvent keyValueDataEvent)
{
if (!this.dynamicStatementFromRefByTableName.TryGetValue(keyValueDataEvent.name, out StatementFromRef selectedStatementFromRef))
{
return(null);
}
logger.Trace($"GetImpactedRecordsAsync():name={name}");
StringBuilder newFromClause = new StringBuilder();
string newWhereClause = this.selectStatement.whereClause;
Dict newVarsDict = new Dict(this.varsDict);
foreach (StatementFromRef statementFromRef in this.selectStatement.StatementFromRefs)
{
StringBuilder sb = new StringBuilder();
if (statementFromRef == selectedStatementFromRef)
{
Dict primaryKeyValues = DictionaryX.ParseKeyValue(keyValueDataEvent.keyValue, this.dynamicViewSet.Database.TableByName[keyValueDataEvent.name].Indexes[0].FieldNames);
foreach (var fieldName in this.dynamicViewSet.Database.TableByName[keyValueDataEvent.name].Indexes[0].FieldNames)
{
logger.Trace($"GetImpactedRecordsAsync():tableName={statementFromRef.table.Name},fieldName={fieldName}");
string prefix;
if (this.selectStatement.StatementFromRefs.Length == 1)
{
prefix = "";
}
else if (!string.IsNullOrEmpty(statementFromRef.tableAlias))
{
prefix = $"{statementFromRef.tableAlias}.";
}
else
{
prefix = $"{statementFromRef.table.Name}.";
}
logger.Trace($"GetImpactedRecordsAsync():prefix={prefix}");
var paramName = $"__{fieldName}";
var condition = $"{prefix}{fieldName}=@{paramName}";
logger.Trace($"GetImpactedRecordsAsync():condition={condition}");
if (sb.Length > 0)
{
sb.Append(" AND ");
}
sb.Append(condition);
newVarsDict[paramName] = primaryKeyValues[fieldName];
}
logger.Trace($"GetImpactedRecordsAsync():newAndCondition={newWhereClause}");
}
// JoinType = None only happens on first table reference
if (statementFromRef.joinType == JoinType.None)
{
newFromClause.Append(statementFromRef.table.Name);
if (!string.IsNullOrEmpty(statementFromRef.tableAlias))
{
newFromClause.Append($" {statementFromRef.tableAlias}");
}
if (sb.Length > 0)
{
if (string.IsNullOrEmpty(newWhereClause))
{
newWhereClause = sb.ToString();
}
else
{
newWhereClause = $"({newWhereClause}) AND ({sb.ToString()})";
}
}
}
else
{
newFromClause.Append($" {statementFromRef.joinType.ToString().ToUpper()} JOIN");
newFromClause.Append($" {statementFromRef.table.Name}");
if (!string.IsNullOrEmpty(statementFromRef.tableAlias))
{
newFromClause.Append($" {statementFromRef.tableAlias}");
}
newFromClause.Append($" ON");
if (sb.Length > 0)
{
newFromClause.Append($" ({statementFromRef.joinCondition}) AND ({sb.ToString()})");
}
else
{
newFromClause.Append($" {statementFromRef.joinCondition}");
}
}
}
SelectStatement newStatement = new SelectStatement(this.dynamicViewSet.Database, this.selectStatement.selectClause, newFromClause.ToString(), newWhereClause?.ToString(), null);
return(await this.dynamicViewSet.Database.SelectRowsAsync(newStatement, newVarsDict));
}
