protected IDbCommand CreateRetrievalPreparedStatement(ITypeFieldValueList keyValueList, ITransaction tx)
{
Type targetType = keyValueList.Type;
EntityInfo entityInfo = CacheManager.GetEntityInfo(targetType);
string query = entityInfo.GetLoadQuery(DbLayer);
IDbCommand cmd;
try
{
cmd = tx.CreateCommand();
cmd.CommandText = query;
}
catch (Exception ex)
{
string message = String.Format("SQL Exception while trying create command for sql {0}", query);
throw new CommandCreationException(message, ex);
}
ICollection <IColumn> keys = entityInfo.GetKeys();
StringBuilder logSb = new StringBuilder();
bool showQuery = Config.ShowQueries;
if (showQuery)
{
logSb.Append(query);
}
int i = 0;
foreach (IColumn key in keys)
{
Object fieldValue = keyValueList.GetFieldValue(key.AttributeName).Value;
if (showQuery)
{
logSb.Append(" ,").Append(key.ColumnName).Append("=").Append(fieldValue);
}
DbLayer.DataManipulate().SetToPreparedStatement(cmd, fieldValue, ++i, key);
}
if (showQuery)
{
Logger.GetLogger(Config.LoggerName).Debug(logSb.ToString());
}
if (Config.EnableStatistics)
{
Statistics.RegisterSelect(targetType);
}
return(cmd);
}
private void ProcessQuery(StringBuilder sb, QuerySegment segment, QueryBuildInfo buildInfo, IDbLayer dbLayer)
{
buildInfo = dbLayer.DataManipulate().ProcessQuery(buildInfo, segment.Query.Structure);
sb.Append(" ( ");
sb.Append(buildInfo.ExecInfo.Sql);
sb.Append(" ) ");
}
public string CreateSql(IDbLayer dbLayer, QueryBuildInfo buildInfo)
{
String alias = "union_src_" + Guid.NewGuid().ToString().Substring(0, 5);
var sqlBuilder = new StringBuilder();
sqlBuilder.Append("(");
for (int i = 0, queriesLength = Queries.Length; i < queriesLength; i++)
{
ISelectionQuery query = Queries[i];
QueryBuildInfo result = dbLayer.DataManipulate().ProcessQuery(buildInfo, query.Structure);
if (i > 0)
{
sqlBuilder.Append(" UNION ");
if (All)
{
sqlBuilder.Append(" ALL ");
}
}
sqlBuilder.Append(result.ExecInfo.Sql + " union_src_" + i);
}
sqlBuilder.Append(") ").Append(alias);
buildInfo.AddUnionAlias(alias);
return(sqlBuilder.ToString());
}
public string CreateSql(IDbLayer dbLayer, QueryBuildInfo buildInfo)
{
QueryBuildInfo result = dbLayer.DataManipulate().ProcessQuery(buildInfo, Query.Structure);
string sql = "(" + result.ExecInfo.Sql + ")";
if (!string.IsNullOrEmpty(Alias))
{
sql = sql + " as " + Alias;
buildInfo.AddQueryAlias(Alias, Query);
}
return(sql);
}
public DbGate(int dbType)
{
_config = new DbGateConfig();
_statistics = new DbGateStatistics();
InitializeDefaults();
IDbLayer dbLayer = LayerFactory.CreateLayer(dbType, _config);
CacheManager.Init(_config);
_persistRetrievalLayer = new PersistRetrievalLayer(dbLayer, _statistics, _config);
_dataMigrationLayer = new DataMigrationLayer(dbLayer, _statistics, _config);
dbLayer.DataManipulate();
}
public string GetRelationObjectLoad(IDbLayer dbLayer, IRelation relation)
{
string queryId = relation.RelationShipName + "_" + relation.RelatedObjectType.FullName;
string query = GetQuery(queryId);
if (query == null)
{
query = dbLayer.DataManipulate().CreateRelatedObjectsLoadQuery(relation);
SetQuery(queryId, query);
}
if (query == null)
{
throw new QueryBuildingException(String.Format("Child loading Query building failed for table {0} class {1} child object type {2}", TableInfo, EntityType.FullName, relation.RelatedObjectType.FullName));
}
return(query);
}
public string GetDeleteQuery(IDbLayer dbLayer)
{
const string queryId = "DELETE";
string query = GetQuery(queryId);
if (query == null)
{
PopulateRelationColumns();
query = dbLayer.DataManipulate().CreateDeleteQuery(TableInfo.TableName, Columns);
SetQuery(queryId, query);
}
if (query == null)
{
throw new QueryBuildingException(String.Format("Delete Query building failed for table {0} class {1}", TableInfo, EntityType.FullName));
}
return(query);
}
public string CreateSql(IDbLayer dbLayer, QueryBuildInfo buildInfo)
{
ISegment rootSegment = Expr.RootSegment;
switch (rootSegment.SegmentType)
{
case SegmentType.Group:
return(_processor.GetGroupFunction((GroupFunctionSegment)rootSegment, true, buildInfo));
case SegmentType.Field:
return(_processor.GetFieldName((FieldSegment)rootSegment, true, buildInfo));
case SegmentType.Query:
var querySegment = (QuerySegment)rootSegment;
buildInfo = dbLayer.DataManipulate().ProcessQuery(buildInfo, querySegment.Query.Structure);
return("(" + buildInfo.ExecInfo.Sql + ") as " + querySegment.Alias);
}
return(null);
}
