This section describes changes to the RiverWare Policy Language (RPL).

Two new statements were added to RPL:

These two statements post a message to the diagnostic output window just like the Warning statement. All three statements (Warning, Notice, and Alert) have unique colors as described under Notice, Warning, and Alert Statements in Debugging and Analysis.

Figure 3.5 shows a sample use of an Alert statement. A Notice can be used in the same manner.

Within RPL block dialogs (Rules, Goals, Methods), the operations to add statements were moved to a separate Statement menu.

The following RPL Predefined functions were added.

This function gets the value from a Text Series Slot at the specified datetime and returns a string.

See GetTextSlotValueAsString in RiverWare Policy Language (RPL) for more information.

Given a slot, this function return the slot name portion of the full name, combined with the column label when the input slot is an aggregate series slot or a column of an aggregate series slot.

See GetSlotNameAndCol in RiverWare Policy Language (RPL) for more information.

This function converts a string into a numeric that can be set on a Text Series Slot.

See StringToTextSlotNumeric in RiverWare Policy Language (RPL) for more information.

The function converts a Text Series Slot encoded text (a numeric) into a string.

See TextSlotNumericToString in RiverWare Policy Language (RPL) for more information.

Text Series Slots store text strings as a series of encoded numeric data. The RiverWare Policy Language (RPL) was improved to read Text Series Slots with any RPL set and set Text Series Slots from Rulebased Simulation Rules and Initialization Rules. To support this, three new predefined RPL functions were added: two for reading text slots and one for writing text slots.