Before the Multiple Object Method Selector was available, a user had to select methods from the Open Object window for each object. For example, if a new engineering method was developed for use for all reservoirs in basin, a user would have to select this new method on each Reservoir object. For large models, this could be a tedious and time-consuming task. The purpose of the Multiple Object Method Selector is to allow the user to set an engineering method for a group of objects from a single window.

All objects of the same type do not necessarily have the same engineering methods or method categories available. For example, it is not always possible for a user to select a given method on all Level Power Reservoirs. The currently selected engineering methods on an object determine the currently available methods and method categories.

To overcome these difficulties, this utility indicates which objects have a given method category available and therefore which objects will need to be re-configured in order to make the given category available. The utility similarly indicates which engineering methods are available on each object for a given category. Once an engineering category and method is selected, the utility only changes the engineering method on objects which have the desired category and method available.

The utility is invoked from the main RiverWare workspace using the menu sequence: Workspace, then Objects, then Select Methods on Objects. This displays a blank Multiple Object Method Selector.

It is also possible to bring up the utility from the Open Object, Methods tab by right-clicking a row and then selecting Show in the Multiple Object Method Selector. In this case, the selected object is added to the object list and the selected category and method are already highlighted.

Selecting methods on multiple objects consists of the following steps:

These steps are accomplished using the three sections of the utility. The utility is designed so that the user progresses from top to bottom with each successive task. From top to bottom, we will refer to these sections as: Object List, Category List, and Method list.

The selection of new methods is performed on the selected objects in the list of objects. This list is created/edited by the user by adding/removing objects, filtering, and finally making a selection.

Adding objects is accomplished using the selector. This utility is displayed using the Add Objects button or the corresponding menu item: Objects, then Invoke Object Selector.

Use of this utility proceeds from left to right. The user first selects an Object Type. This populates the list of objects of the given type in the Objects list. Multiple object types can be selected simultaneously by pressing Ctrl while selecting the object types.

Objects in this list can be filtered using the standard object filters: Object Name Filter, Has Accounts Filter, and In Subbasin Filter. The user then selects objects from this list. This can be done with the following methods:

Once the desired set of objects has been selected, the OK or Apply button adds the objects to the list in the Multiple Object Method Selector. See Selecting Objects for details on using the selector.

If after adding objects to the Multiple Object Method Selector, more objects need to be added, the object selector can be invoked again. Objects are appended to the current object set in the Multiple Object Method Selector.

A user removes objects by selecting one or more objects in the list and then clicks the Remove button or all objects can be removed using the menu item: Objects, then Remove All Objects.

When the user adds objects to the list using the Add Objects button and the selector, the user is able to select multiple types of objects. Applying new methods is specific to a type of object, e.g. Reach methods do not apply to Reservoirs. If the user adds multiple types of objects, every method category for all object types will be added to the list. It is frequently overwhelming to sort through the various user methods to find the desired method. To avoid this, the object filter can be used to only show objects by type. Select the checkbox to Filter by Type, then select a type of object from the menu. Abstract object types like Reservoir or Power Reservoir can be selected. Now only the objects matching that type are shown in the list. This is now called the filtered list.

Application of a new method is performed on the objects selected in the object list, not all of the objects displayed. You can use the following methods to select objects:

Any new method selection will be applied only to the selected objects.

Once objects have been added to the object list, the category list will be updated to display the union of all active categories on the selected objects. It is important to understand that this list displays the union, so some objects may not have a given category available.

Selecting a category selects the category. When a category is selected the object list and method selection controls are updated to display information about the selected category.

When a category is selected, the object list displays which objects have the selected category available. The third column in the object list, Current Method, is one of the following:

The user should scroll through the object list, looking for empty values in the third column. This information is useful when the user intends to set a common method on all the objects in the set. In this case, the user can quickly determine which objects need to be reconfigured to make the desired category available.

Information about the currently active method is contained in two places in the utility: the Current Method column in the object list, as discussed previously, and the Current Methods text box in the method selection section. The Current Methods line displays a comma-separated set of selected method for all the objects in the set.

Once a category has been selected, the user can select a new method for this category. The new method is selected from the list of methods in the right pane. Once a method is selected, it is added to the New Method line at the bottom of the window.

Like method categories, methods may not be active on some objects, even though their category is active. The method list displays the union of all methods available on the selected objects that have this category active. Since some methods may not be available on all objects, the object list displays whether a given method is available on each object. Once the user has selected a new method from the method list, the objects list is updated. The forth column in the object list, Available, now displays the text AVAIL if the selected method is available on the given object, or display nothing if the method is not available on the object.

Once a method has been selected the user should scroll through the object list to determine which objects can have the new method activated. Any method with AVAIL in the Available column are allowed to have the new method activated. If this column is empty for an object, the object will not be affected if this new method is applied.

Unlike the Open Object, selecting a method from this menu does not immediately set the method on all affected objects. Instead, the user must select the Apply New Method button to change the method on the objects. This Apply New Method button remains inactive until a new method has been selected from the menu, at which time it will be enabled. Selecting Apply New Method will set this method as the active method on highlighted objects in the object list with this category and method available.

After the new method has been applied using the Apply New Method button, a confirmation dialog appears. This dialog lists all the objects which will have this new method activated. This is the selected objects the list that have the desired category and method available. Canceling this dialog will prevent the method from being changed on any of the objects. Also, the dialog informs the user of the new slots which may be instantiated when this new engineering method is activated. Canceling this dialog will prevent the method from being changed on any of the objects.

Once the confirmation dialogs have been accepted, the objects will be modified. A busy cursor indicates that the methods are being changed. For a large set of objects this operation can take some time.

Once the methods have been changed, the Multiple Object Method Selector will be updated to display the new methods on the objects. A quick inspection of the object list shows that the method has been changed on the objects with this category and method available.

The Multi-Object Method Selector can be also used to select Object Level Accounting Methods (OLAMs). See Object-level Accounting Methods (OLAMs) in Accounting for details on OLAMs. Figure 3.20 shows aspects of this utility specific to OLAMs.

When an object level accounting category is selected, that category’s method options are shown in the methods list (shown here).

When selecting a method item selected on at least one simulation object, the Method Execution Time combo box is set to the indicated execution time -- or, if multiple execution times are indicated for that method item, one of those several execution times are used. You can selected a different execution time in the combo box. See Execution of OLAMs in Accounting for details on execution times.

In this utility, there are two ways of setting the execution time of OLAM methods:

The Multiple Object Method Selector also has special features for the Copy Slot to Slot Info OLAM; see Copy Slot to Slot Inflows in Accounting for details.

When that method is selected, the Set Target Account List Slots button is shown below the methods list. This button is enabled if any objects currently have the Copy Slot to Slot Info method selected. Selecting this button brings up the new Set Target Account on Objects.

The Set Target Account on Objects operates on each simulation object being editing in the Multi-Object Method Selector which has the Copy Slot to Slot Inflow method selected.

The user selects one of three criteria for choosing an Account on each simulation object to be assigned to that object’s Target Account List Slot:

There must be exactly one Account on each object matching the criteria. This information is displayed in the Status area.

In the case of the Set List Slots operation being ready (i.e. exactly one Account matching the entered criteria for each simulation object), the Status panel enumerates the simulation objects; see Figure 3.21. Otherwise, the Status panel enumerates the simulation objects which either have no Accounts matching the criteria, or have more than one Account matching the criteria. Additionally, when the Water Type or Water Owner criteria are selected, the names of the matching Accounts can optionally be shown.

Selecting the Set List Slots button, when enabled, assigns the object Target Account List Slots and closes the window.