private static StringBuilder BuildSqlClause(WfMatrixQueryParamCollection queryParams)
{
var matrixIdParam = queryParams.Find(p => p.QueryName == DB_FIELD_MATRIX_ID);
string inSqlClause = string.Empty;
foreach (var para in queryParams)
{
if (para == matrixIdParam)
{
continue; //|| string.IsNullOrEmpty(para.QueryValue) 空值也作为条件
}
inSqlClause = BuilderSubSqlClause(para, matrixIdParam.QueryValue, inSqlClause);
}
StringBuilder result = new StringBuilder(SELECT_SQL_CLAUSE);
WhereSqlClauseBuilder builder = new WhereSqlClauseBuilder();
builder.AppendItem("R." + matrixIdParam.QueryName, matrixIdParam.QueryValue);
builder.AppendTenantCode("R.TENANT_CODE");
result.Append(builder.ToSqlString(TSqlBuilder.Instance));
if (!string.IsNullOrEmpty(inSqlClause))
{
result.AppendFormat(" AND R.{0} IN ({1})", DB_FIELD_MATRIX_ROW_ID, inSqlClause);
}
return(result);
}
/// <summary>
/// 按照矩阵维度和维度值查询
/// </summary>
/// <param name="queryParams"></param>
/// <returns></returns>
public WfMatrix Query(WfMatrixQueryParamCollection queryParams)
{
var matrixIdParam = queryParams.Find(p => p.QueryName == DB_FIELD_MATRIX_ID);
if (matrixIdParam == null)
{
throw new ArgumentException("参数至少包括要查询的矩阵ID");
}
var matrixCollection = Load(p => p.AppendItem(matrixIdParam.QueryName, matrixIdParam.QueryValue));
if (matrixCollection.Count == 0)
{
return(null);
}
var result = matrixCollection.First();
var selectClause = BuildSqlClause(queryParams);
var ds = DbHelper.RunSqlReturnDS(selectClause.ToString());
result.Loaded = false;
result.Rows.CopyFrom(ds.Tables[0].DefaultView);
result.Loaded = true;
return(result);
}