/// <summary>
/// 解析生成删除SQL
/// </summary>
/// <remarks>按主键数据作为查询依据</remarks>
/// <param name="domainModel">领域模型</param>
/// <param name="domainObject">领域对象</param>
/// <param name="dataID">主键数据</param>
/// <param name="shardingKeyValue">分库分表键值对</param>
/// <returns>删除SQL</returns>
public SqlStatementCollection ParseDeleteSqlByID(DomainModel.Spi.DomainModel domainModel, DomainModel.Spi.DomainObject domainObject, string dataID, ShardingValue shardingKeyValue = null)
{
var sqls = new SqlStatementCollection();
var sqlSchema = new SqlStatementCollection();
var routeInfo = routeService.RouteByDataID(domainModel, dataID, shardingKeyValue);
var dataIDDic = CreatePkDataDictionary(domainModel, domainModel.RootDomainObject, dataID);
var dataContext = DataContextBuilder.CreateDataContext<IDictionary<string, object>>(domainModel, domainObject, DataAccessOpType.D, dataIDDic);
//解析SQL语句主干接口
ParseDeleteSqlSchema(sqlSchema, domainModel, domainObject, routeInfo, dataContext);
//在SqlSchema上逐表添加数据
ParseDeleteSqlDetail(sqlSchema, sqls, domainModel, domainObject, dataContext, routeInfo);
var result = new SqlStatementCollection();
foreach (var tempDomainObject in domainModel.ReverseDomainObjects)
{
var sql = sqls.FirstOrDefault(i => i.NodeID == tempDomainObject.ID);
if (sql != null)
{
result.Add(sql);
}
}
return result;
}
/// <summary>
/// 构造不包含数据的Sql（即SqlSchema）。
/// </summary>
/// <param name="sqls">Sql语句对象集合。</param>
/// <param name="context">Sql构造的上下文信息。</param>
public override SqlStatementCollection BuildTableSqlSchema(SqlBuildingContext context)
{
if (context == null)
{
throw new ArgumentNullException("SelectSqlBuildStrategy.BuildTableSqlSchema");
}
var sqls = new SqlStatementCollection();
var selectStatement = SQLStatementFactory.CreateSqlStatement(SqlStatementType.Select, context.DbType) as SelectSqlStatement;
selectStatement.SqlBuildingInfo.DataSource = context.DataSource;
//Parsing main part of query SQL statement
BuildMainFrom(selectStatement, context.CommonObject, context.Node, context.DataObject, context.TableName, context);
//Parsing query fields list
BuildQueryFieldList(selectStatement, context.Node, context.DataObject);
//Parsing inner join clause
BuildMainInnerJoin(selectStatement, context);
sqls.Add(selectStatement);
sqls.ShardingInfo = context.RouteInfo;
return(sqls);
}
/// <summary>
/// 构造不包含数据的Sql（即SqlSchema）。
/// </summary>
/// <param name="sqls">Sql语句对象集合。</param>
/// <param name="context">Sql构造的上下文信息。</param>
public override SqlStatementCollection BuildTableSqlSchema(SqlBuildingContext context)
{
if (context == null)
{
throw new ArgumentNullException("UpdateSqlBuildStrategy.BuildTableSqlSchema");
}
var sqls = new SqlStatementCollection();
var updateStatement = SQLStatementFactory.CreateSqlStatement(SqlStatementType.Update, context.DbType) as UpdateSqlStatement;
updateStatement.SqlBuildingInfo.DataSource = context.DataSource;
base.HandlingSqlStatement(updateStatement, context);
sqls.Add(updateStatement);
return(sqls);
}
/// <summary>
/// 构造不包含数据的Sql（即SqlSchema）。
/// </summary>
/// <param name="sqls">Sql语句对象集合。</param>
/// <param name="context">Sql构造的上下文信息。</param>
public override SqlStatementCollection BuildTableSqlSchema(SqlBuildingContext context)
{
if (context == null)
{
throw new ArgumentNullException("InsertSqlBuilder.BuildTableSqlSchema");
}
var sqls = new SqlStatementCollection();
var insertStatement = SQLStatementFactory.CreateSqlStatement(SqlStatementType.Insert, context.DbType) as InsertSqlStatement;
base.HandlingSqlStatement(insertStatement, context);
HandlingInsertFields(insertStatement, context);
insertStatement.SqlBuildingInfo.DataSource = context.DataSource;
sqls.Add(insertStatement);
return(sqls);
}
/// <summary>
/// 构造不包含数据的Sql（即SqlSchema）。
/// </summary>
/// <param name="sqls">Sql语句对象集合。</param>
/// <param name="context">Sql构造的上下文信息。</param>
public override SqlStatementCollection BuildTableSqlSchema(SqlBuildingContext context)
{
if (context == null)
{
throw new ArgumentNullException("DeleteSqlBuildStrategy.BuildTableSqlSchema");
}
var sqls = new SqlStatementCollection();
//构造DeleteSql
var sql = SQLStatementFactory.CreateSqlStatement(SqlStatementType.Delete, context.DbType) as DeleteSqlStatement;
base.HandlingSqlStatement(sql, context);
//构造DeleteSql的删除过滤条件
this.HandlingJoin(sql, context);
sqls.Add(sql);
return(sqls);
}
