public override QueryEntityRelationCondition toObject(JsonObject jsonObject)
{
// this is limited in that it allows only String values;
// that is sufficient for current use case with task filters
// but could be extended by a data type in the future
string scalarValue = null;
if (jsonObject.has(SCALAR_VALUE))
{
scalarValue = JsonUtil.getString(jsonObject, SCALAR_VALUE);
}
QueryProperty baseProperty = null;
if (jsonObject.has(BASE_PROPERTY))
{
baseProperty = new QueryPropertyImpl(JsonUtil.getString(jsonObject, BASE_PROPERTY));
}
QueryProperty comparisonProperty = null;
if (jsonObject.has(COMPARISON_PROPERTY))
{
comparisonProperty = new QueryPropertyImpl(JsonUtil.getString(jsonObject, COMPARISON_PROPERTY));
}
return(new QueryEntityRelationCondition(baseProperty, comparisonProperty, scalarValue));
}
public override QueryOrderingProperty toObject(JsonObject jsonObject)
{
string relation = null;
if (jsonObject.has(RELATION))
{
relation = JsonUtil.getString(jsonObject, RELATION);
}
QueryOrderingProperty property = null;
if (QueryOrderingProperty.RELATION_VARIABLE.Equals(relation))
{
property = new VariableOrderProperty();
}
else
{
property = new QueryOrderingProperty();
}
property.Relation = relation;
if (jsonObject.has(QUERY_PROPERTY))
{
string propertyName = JsonUtil.getString(jsonObject, QUERY_PROPERTY);
string propertyFunction = null;
if (jsonObject.has(QUERY_PROPERTY_FUNCTION))
{
propertyFunction = JsonUtil.getString(jsonObject, QUERY_PROPERTY_FUNCTION);
}
QueryProperty queryProperty = new QueryPropertyImpl(propertyName, propertyFunction);
property.QueryProperty = queryProperty;
}
if (jsonObject.has(DIRECTION))
{
string direction = JsonUtil.getString(jsonObject, DIRECTION);
property.Direction = Direction.findByName(direction);
}
if (jsonObject.has(RELATION_CONDITIONS))
{
IList <QueryEntityRelationCondition> relationConditions = JsonQueryFilteringPropertyConverter.ARRAY_CONVERTER.toObject(JsonUtil.getArray(jsonObject, RELATION_CONDITIONS));
property.RelationConditions = relationConditions;
}
return(property);
}
public virtual IList <QueryOrderingProperty> fromOrderByString(string orderByString)
{
IList <QueryOrderingProperty> properties = new List <QueryOrderingProperty>();
string[] orderByClauses = orderByString.Split(ORDER_BY_DELIMITER, true);
foreach (string orderByClause in orderByClauses)
{
orderByClause = orderByClause.Trim();
string[] clauseParts = orderByClause.Split(" ", true);
if (clauseParts.Length == 0)
{
continue;
}
else if (clauseParts.Length > 2)
{
throw new ProcessEngineException("Invalid order by clause: " + orderByClause);
}
string function = null;
string propertyPart = clauseParts[0];
int functionArgumentBegin = propertyPart.IndexOf("(", StringComparison.Ordinal);
if (functionArgumentBegin >= 0)
{
function = propertyPart.Substring(0, functionArgumentBegin);
int functionArgumentEnd = propertyPart.IndexOf(")", StringComparison.Ordinal);
propertyPart = propertyPart.Substring(functionArgumentBegin + 1, functionArgumentEnd - (functionArgumentBegin + 1));
}
string[] propertyParts = propertyPart.Split("\\.", true);
string property = null;
if (propertyParts.Length == 1)
{
property = propertyParts[0];
}
else if (propertyParts.Length == 2)
{
property = propertyParts[1];
}
else
{
throw new ProcessEngineException("Invalid order by property part: " + clauseParts[0]);
}
QueryProperty queryProperty = new QueryPropertyImpl(property, function);
Direction direction = null;
if (clauseParts.Length == 2)
{
string directionPart = clauseParts[1];
direction = Direction.findByName(directionPart);
}
QueryOrderingProperty orderingProperty = new QueryOrderingProperty(null, queryProperty);
orderingProperty.Direction = direction;
properties.Add(orderingProperty);
}
return(properties);
}
