/// <summary>
/// Processes the attributes.
/// </summary>
/// <param name="entityMap">Entity mapping whitch contains the attribute</param>
/// <param name="name">Name of the attribute</param>
/// <param name="loadAttributes"></param>
/// <param name="checkAlias">Indicate if returned column must have an computed alias name or not</param>
/// <returns>Return a <see cref="Column"/></returns>
public ISQLExpression ProcessAttributes(EntityMapping entityMap, string name, bool loadAttributes, bool checkAlias)
{
if (name == "Id")
{
Table currentTable = (Table)tableContext.Peek();
return new Column(entityMap.Ids[0], currentTable.TableAlias, entityMap.GetIdField(entityMap.Ids[0]));
}
else
{
// Exception management : attribute mapping
AttributeMapping attributeMapping = entityMap.Attributes[name];
//Attempt to get the attribute in the children types
if (attributeMapping == null)
foreach (Evaluant.Uss.Models.Entity e in _Model.GetTree(entityMap.Type))
{
EntityMapping em = _Mapping.Entities[e.Type];
if ((attributeMapping = em.Attributes[name]) != null)
break;
}
//Attempt to get the attribute in the parent types
if (attributeMapping == null)
{
Evaluant.Uss.Models.Entity cur = _Model.GetEntity(entityMap.Type);
while (_Model.GetParent(cur) != null)
{
cur = _Model.GetParent(cur);
EntityMapping current = _Mapping.Entities[cur.Type];
if (current.Attributes[name] != null)
attributeMapping = current.Attributes[name];
}
}
if (attributeMapping == null)
throw new UniversalStorageException(String.Format("The attribute '{0}' of the entity '{1}' is not defined in your mapping file", name, entityMap.Type));
// If the attribute is contained in entity's table : the current query doesn't change
if (attributeMapping.Table == entityMap.Table)
{
Table currentTable = (Table)tableContext.Peek();
Column c = new Column(attributeMapping, currentTable.TableAlias, attributeMapping.Field);
//if (entityMap.Ids[attributeMapping.Field] != null)
// c.ColumnName = entityMap.GetIdField(entityMap.Ids[attributeMapping.Field]);
if (checkAlias)
{
string attributeFullName = _Model.GetFullAttributeName(attributeMapping.Name, attributeMapping.ParentEntity.Type);
//if (entityMap.Ids[attributeMapping.Field] != null)
// attributeFullName = entityMap.GetIdFieldAs(entityMap.Ids[attributeMapping.Field]);
//c.ColumnName = (_AliasColumnMapping.Contains(attributeFullName)) ? _AliasColumnMapping[attributeFullName].ToString() : "";
if (_AliasColumnMapping.Contains(attributeFullName))
c.ColumnName = _AliasColumnMapping[attributeFullName].ToString();
}
return c;
}
// Else : create a new select query
else
{
// Get the current context
Table currentTable = (Table)tableContext.Pop();
SelectStatement mainQuery = (SelectStatement)queryContext.Pop();
// Create a new query
SelectStatement currentQuery = new SelectStatement(attributeMapping);
Table attributeTable = new TableSource(attributeMapping, attributeMapping.Table, CreateUniqueAttributeAlias());
string atrbId = attributeMapping.Table == null || attributeMapping.Table == entityMap.Table ? entityMap.GetIdField(entityMap.Ids[0]) : attributeMapping.ParentField;
if (loadAttributes)
{
return this.ProcessAttributesWithLoadAttribute(mainQuery, currentQuery, currentTable, entityMap, attributeTable, attributeMapping, atrbId);
}
else
{
if (_IsFirstAttribute)
{
_IsFirstAttribute = false;
// if current table is a JoinedTable :
// from clause = mainQuery INNER JOIN attributeTable
if (currentTable.GetType() == typeof(JoinedTable))
{
JoinedTable lastJoinTable = new JoinedTable(mainQuery, loadAttributes ? TypeJoinedTable.LeftOuter : TypeJoinedTable.Inner, attributeTable);
lastJoinTable.TableAlias = mainQuery.TableAlias;
BinaryLogicExpression onCondition = new BinaryLogicExpression(
new Column(entityMap.Ids[0], mainQuery.TableAlias, entityMap.GetIdField(entityMap.Ids[0])),
BinaryLogicOperator.Equals,
new Column(attributeMapping, attributeTable.TableAlias, atrbId));
if (mainQuery.WhereClause.SearchCondition.Count != 0)
{
foreach (ILogicExpression expression in mainQuery.WhereClause.SearchCondition)
{
onCondition = new BinaryLogicExpression(onCondition, BinaryLogicOperator.And, expression);
}
}
lastJoinTable.SearchConditions.Add(new BinaryLogicExpression(
new Column(entityMap.Ids[0], mainQuery.TableAlias, entityMap.GetIdField(entityMap.Ids[0])),
BinaryLogicOperator.Equals,
new Column(entityMap.Ids[0], attributeTable.TableAlias, atrbId)));
currentQuery.TableAlias = mainQuery.TableAlias;
currentQuery.FromClause.Add(lastJoinTable);
currentQuery.WhereClause.SearchCondition.Add(new BinaryLogicExpression(
new Column(attributeMapping, attributeTable.TableAlias, attributeMapping.Discriminator),
BinaryLogicOperator.Equals,
new Constant(name, DbType.AnsiString)));
tableContext.Push(lastJoinTable);
queryContext.Push(currentQuery);
return new Column(attributeMapping, attributeTable.TableAlias, attributeMapping.Field);
}
// else
// from clause = currentTable INNER JOIN attributeTable
else
{
JoinedTable joinTable = new JoinedTable(currentTable, loadAttributes ? TypeJoinedTable.LeftOuter : TypeJoinedTable.Inner, attributeTable);
joinTable.SearchConditions.Add(new BinaryLogicExpression(
new Column(entityMap.Ids[0], currentTable.TableAlias, entityMap.GetIdField(entityMap.Ids[0])),
BinaryLogicOperator.Equals,
new Column(attributeMapping, attributeTable.TableAlias, atrbId)));
currentQuery.TableAlias = CreateUniqueTableAlias();
currentQuery.FromClause.Add(joinTable);
currentQuery.WhereClause.SearchCondition = mainQuery.WhereClause.SearchCondition;
tableContext.Push(joinTable);
}
}
else
{
Table rightTable = ((JoinedTable)currentTable).RigthTable;
JoinedTable joinTable = new JoinedTable(attributeTable, TypeJoinedTable.Inner, rightTable);
joinTable.SearchConditions.Add(new BinaryLogicExpression(
new Column(attributeMapping, rightTable.TableAlias, atrbId),
BinaryLogicOperator.Equals,
new Column(attributeMapping, attributeTable.TableAlias, atrbId)));
((JoinedTable)currentTable).RigthTable = joinTable;
currentQuery.SelectList.Add(new Column(entityMap.Ids[0], currentTable.TableAlias, entityMap.GetIdField(entityMap.Ids[0])));
currentQuery.TableAlias = currentTable.TableAlias;
currentQuery.FromClause.Add(currentTable);
tableContext.Push(currentTable);
}
queryContext.Push(currentQuery);
return new Column(attributeMapping, attributeTable.TableAlias, attributeMapping.Field);
}
}
}
}
public Hashtable InitializeCompoundUpdateCommand(EntityMapping entity, ArrayList updateCommands)
{
Hashtable updateCompoundQueryEntries = new Hashtable();
if (entity.Attributes != null)
{
// Loops through attributes so as to create as many SQL Update Command as Tables
foreach (UpdateAttributeCommand a in updateCommands)
{
AttributeMapping attributeMapping = entity.Attributes[a.Name];
if (attributeMapping == null)
throw new SqlMapperException(string.Format("Cannot find the attribute '{0}' of the entity '{1}' in your mapping file", a.Name, entity.Type));
CacheQueryEntry entry = null;
if (attributeMapping.Discriminator == null)
{
// Creates an UpdateCommand for each Table and add the Where clause for the command
if (!updateCompoundQueryEntries.Contains(attributeMapping.Table))
{
CacheQueryEntry cacheEntry = new CacheQueryEntry(new UpdateCommand(attributeMapping, attributeMapping.Table));
updateCompoundQueryEntries.Add(attributeMapping.Table, cacheEntry);
if ((attributeMapping.ParentField == null || attributeMapping.ParentField == string.Empty) && attributeMapping.Table != entity.Table)
{
attributeMapping.ParentField = entity.IdFields;
Parameter param = new Parameter(attributeMapping, "FK_Entity");
cacheEntry.Parameters.Add(param);
((UpdateCommand)cacheEntry.Query).WhereClause.SearchCondition.Add(new BinaryLogicExpression(new Column(attributeMapping, attributeMapping.ParentField), BinaryLogicOperator.Equals, param));
}
}
entry = (CacheQueryEntry)updateCompoundQueryEntries[attributeMapping.Table];
}
else
{
// Initialization
entry = new CacheQueryEntry(new UpdateCommand(attributeMapping, attributeMapping.Table));
// A tag attribute mapping which name = "*", is an implicit generic query (a mapping for all attributes don't describe)
// it is differente to a explicit generic mapping (a mapping foreach attribute)
entry.IsAttributeGenericQuery = attributeMapping.Name == "*";
updateCompoundQueryEntries.Add(attributeMapping.Table, entry);
}
UpdateCommand query = (UpdateCommand)entry.Query;
ArrayList parameters = entry.Parameters;
if (!query.ColumnValueCollection.Contains(attributeMapping.Field))
{
Parameter param = new Parameter(attributeMapping, attributeMapping.Field);
parameters.Add(param);
query.ColumnValueCollection.Add(attributeMapping.Field, param);
if (attributeMapping.Discriminator != null)
{
if (attributeMapping.Name != "*")
{
query.WhereClause.SearchCondition.Add(new BinaryLogicExpression(
new Column(attributeMapping, attributeMapping.Discriminator),
BinaryLogicOperator.Equals,
new Constant(attributeMapping.DiscriminatorValue == null ? attributeMapping.Name : attributeMapping.DiscriminatorValue, DbType.String)));
param = new Parameter(attributeMapping, "FK_Entity");
parameters.Add(param);
query.WhereClause.SearchCondition.Add(new BinaryLogicExpression(new Column(attributeMapping, attributeMapping.ParentField), BinaryLogicOperator.Equals, param));
}
else
{
param = new Parameter(attributeMapping, "AttributeDiscriminator");
parameters.Add(param);
query.WhereClause.SearchCondition.Add(new BinaryLogicExpression(new Column(attributeMapping, attributeMapping.Discriminator), BinaryLogicOperator.Equals, param));
param = new Parameter(attributeMapping, "FK_Entity");
parameters.Add(param);
query.WhereClause.SearchCondition.Add(new BinaryLogicExpression(new Column(attributeMapping, attributeMapping.ParentField), BinaryLogicOperator.Equals, param));
}
}
if (attributeMapping.ParentField == null && !entry.ContainsParameter("EntityId") && !entry.ContainsParameter("Id0"))
{
if (entity.Ids.Count == 1)
{
param = new Parameter(entity.Ids[0], "EntityId");
parameters.Add(param);
query.WhereClause.SearchCondition.Add(new BinaryLogicExpression(
new Column(entity, entity.IdFields),
BinaryLogicOperator.Equals,
param));
}
else
{
for (int i = 0; i < entity.Ids.Count; i++)
{
PrimaryKeyMapping pkId = entity.Ids[i];
param = new Parameter(pkId, string.Concat("Id", i.ToString()));
parameters.Add(param);
query.WhereClause.SearchCondition.Add(new BinaryLogicExpression(
new Column(entity, entity.GetIdField(pkId)),
BinaryLogicOperator.Equals,
param));
}
}
}
}
}
}
return updateCompoundQueryEntries;
}
private ISQLExpression ProcessAttributesWithLoadAttribute(SelectStatement mainQuery, SelectStatement currentQuery, Table currentTable, EntityMapping entityMap, Table attributeTable, AttributeMapping attributeMapping, string atrbId)
{
if (_IsFirstAttribute)
{
_IsFirstAttribute = false;
// if current table is a JoinedTable :
// from clause = mainQuery INNER JOIN attributeTable
if (currentTable is JoinedTable)
{
JoinedTable lastJoinTable = new JoinedTable(mainQuery, TypeJoinedTable.LeftOuter, attributeTable);
lastJoinTable.TableAlias = mainQuery.TableAlias;
BinaryLogicExpression onCondition = new BinaryLogicExpression(
new Column(entityMap.Ids[0], mainQuery.TableAlias, entityMap.GetIdField(entityMap.Ids[0])),
BinaryLogicOperator.Equals,
new Column(attributeMapping, attributeTable.TableAlias, atrbId));
if (mainQuery.WhereClause.SearchCondition.Count != 0)
{
foreach (ILogicExpression expression in mainQuery.WhereClause.SearchCondition)
{
onCondition = new BinaryLogicExpression(onCondition, BinaryLogicOperator.And, expression);
}
}
lastJoinTable.SearchConditions.Add(new BinaryLogicExpression(
new Column(entityMap.Ids[0], mainQuery.TableAlias, entityMap.GetIdField(entityMap.Ids[0])),
BinaryLogicOperator.Equals,
new Column(entityMap.Ids[0], attributeTable.TableAlias, atrbId)));
currentQuery.TableAlias = mainQuery.TableAlias;
currentQuery.FromClause.Add(lastJoinTable);
tableContext.Push(lastJoinTable);
for (int i = 0; i < 2; i++)
{
Column column = mainQuery.SelectList[i] as Column;
if (column != null && column.ColumnName == entityMap.Ids[0].Field && entityMap.Ids[0].Generator.Name == GeneratorMapping.GeneratorType.inherited)
{
column.Alias = null;
currentQuery.SelectList.Add(new Column(column.TagMapping, lastJoinTable.TableAlias, column.ColumnName, entityMap.GetIdFieldAs(entityMap.Ids[0])));
}
else
{
currentQuery.SelectList.Add(mainQuery.SelectList[i]);
}
}
if (entityMap.Ids[0].Generator.Name == GeneratorMapping.GeneratorType.inherited)
{
for (int i = 2; i < mainQuery.SelectList.Count; i++)
{
Column column = mainQuery.SelectList[i] as Column;
if (column != null)
{
currentQuery.SelectList.Add(new Column(column.TagMapping, lastJoinTable.TableAlias, column.GetSelectName()));
}
}
}
if (attributeMapping.Discriminator != null)
{
currentQuery.SelectList.Add(new Column(attributeMapping, attributeTable.TableAlias, attributeMapping.Discriminator));
}
queryContext.Push(currentQuery);
string alias = (attributeMapping.Field != attributeMapping.Name) ? attributeMapping.Name : String.Empty;
return new Column(attributeMapping, attributeTable.TableAlias, attributeMapping.Field);
}
// else
// from clause = currentTable INNER JOIN attributeTable
else
{
JoinedTable joinTable = new JoinedTable(currentTable, TypeJoinedTable.LeftOuter, attributeTable);
joinTable.SearchConditions.Add(new BinaryLogicExpression(
new Column(entityMap.Ids[0], currentTable.TableAlias, entityMap.GetIdField(entityMap.Ids[0])),
BinaryLogicOperator.Equals,
new Column(attributeMapping, attributeTable.TableAlias, atrbId)));
currentQuery.TableAlias = currentTable.TableAlias;
currentQuery.FromClause.Add(joinTable);
currentQuery.WhereClause.SearchCondition = mainQuery.WhereClause.SearchCondition;
foreach (ISQLExpression exp in mainQuery.SelectList)
{
if (!currentQuery.SelectList.Contains(exp))
currentQuery.SelectList.Add(exp);
}
tableContext.Push(joinTable);
}
}
else
{
Table rightTable = ((JoinedTable)currentTable).RigthTable;
JoinedTable joinTable = new JoinedTable(rightTable, TypeJoinedTable.LeftOuter, attributeTable);
joinTable.SearchConditions.Add(new BinaryLogicExpression(
new Column(attributeMapping, rightTable.TableAlias, atrbId),
BinaryLogicOperator.Equals,
new Column(attributeMapping, attributeTable.TableAlias, atrbId)));
((JoinedTable)currentTable).RigthTable = joinTable;
currentQuery.TableAlias = currentTable.TableAlias;
currentQuery.FromClause.Add(currentTable);
currentQuery.WhereClause.SearchCondition = mainQuery.WhereClause.SearchCondition;
tableContext.Push(currentTable);
}
foreach (ISQLExpression exp in mainQuery.SelectList)
{
if (!currentQuery.SelectList.Contains(exp))
{
currentQuery.SelectList.Add(exp);
}
}
if (attributeMapping.Discriminator != null)
{
currentQuery.SelectList.Add(new Column(attributeMapping, attributeTable.TableAlias, attributeMapping.Discriminator));
}
queryContext.Push(currentQuery);
string alias1 = (attributeMapping.Field != attributeMapping.Name) ? attributeMapping.Name : String.Empty;
return new Column(attributeMapping, attributeTable.TableAlias, attributeMapping.Field, alias1);
}