AppRecordList ReadWithWhere() Method

(SBM On-Premise/PaaS only) An alternative to Read(), this method uses SQL to select only certain records from the calling AppRecordList's table, rather than reading the entire table.

Function Signature

 bool ReadWithWhere( whereClause )

bool ReadWithWhere( whereClause, orderBy )

bool ReadWithWhere( whereClause, orderBy , AppRecord templateRec )

bool ReadWithWhere( whereClause, Vector params )

bool ReadWithWhere( whereClause, Vector params, orderBy )

bool ReadWithWhere( whereClause, Vector params, orderBy, AppRecord templateRec )

Parameters

Parameter	Type	Description
whereClause	string	A SQL "where clause" specifying the records to find. SBM will build a SQL string requesting all fields for the calling AppRecordList's table. The string contents of whereClause will appear after the word "where" in this SQL statement.
params	Vector	Params is an optional Vector storing SQL bind parameters, where each entry is a Pair, with the first value as the parameter type and the second value as the value to bind to the SQL parameter. For the type parameter, use DBTypeConstants.
orderBy	string	Identifies a column used for ordering the AppRecordList. To use the templateRec parameter without the orderBy parameter, use an empty string as a parameter for the orderBy parameter.
templateRec	AppRecord	Optional. Identifies which fields are read into all AppRecords in the AppRecordList. Using this parameter may improve performance when using AppRecordOjbects which contain a VarFieldList from Primary or Auxiliary tables. To use this optional parameter, create a VarRecord against the Primary table you are doing your ReadWithWhere against. Get the VarFieldList of that VarRecord through the Fields() method. Call SelectAll, and pass it false to clear all fields. Then, explicitly turn on the fields you wish to read by finding the Field on the VarFieldList, and then calling that Field's Select() method and passing it true.

Return

Type	Description
bool	Returns true if successful; false otherwise. A successful read may return zero results if no items match the query. Check for results by calling the AppRecordList.empty() method.

Technical Details

SBM ModScript version: 11.3.

Example

/*ReadWithWhere with optional "params" parameter and using DBTypeConstants*/
var list = Ext.CreateAppRecordList(Ext.TableId("UBG_ISSUES"));
list.ReadWithWhere("TS_ID between ? and ?", 
    [ Pair(DBTypeConstants.INTEGER,3), Pair(DBTypeConstants.INTEGER,20)], 
    "TS_TITLE ASC" );
for (item : list) {
  Ext.WriteStream("Item: " + item.GetName());
}

Notes

None.