Map Designer Express displays one map at a time within the tab window. This map is called the current map (sometimes called the "currently open map"). You can control which map is the current map with the following Map Designer Express procedures:
A map must be open in Map Designer Express before you can view its information in a Map tab or modify this information. When Map Designer Express opens a map, if the validate map when open preference is enabled, it first performs a set of validations on this map.
If this preference is enabled when a map that uses big business objects (that is, thousands of attributes) is opened, Map Designer Express may take a long time to open the map. You can change the setting of this option on the General tab of the Preferences dialog. For more information, see "Specifying General Preferences".
The validations that Map Designer Express performs on the map are as follows:
Move transformation--only one source attribute is involved.
Join transformation--more than one source attribute is involved.
Split transformation--only one source attribute is involved; split index is greater than or equal to zero; split delimiter is not empty.
Set Value transformation--no source attribute is involved; a value has been specified.
Submap transformation--at least one source attribute is involved; submap name is specified.
Cross-Reference transformation--only one source attribute is involved.
Map Designer Express provides the following ways to open a map:
Perform the following steps to open a map from a project in System Manager:
Result: Map Designer Express displays the Open Map
dialog.
Tip: To locate a particular map name, enter its name in the Find field. The up and down arrows scroll through the map list.
A map definition can be stored in XML format in an operating-system file called a map definition file. To create a map definition file, you save the map as a map design file ( .cwm) in Map Designer Express. For more information, see "Saving a map to a file".
When you open a map definition file, you open the map in Map Designer Express.
Perform the following steps to open a map definition file:
.cwm file created by Map Designer Express.
Result: Map Designer Express opens the map definition file. The map information appears in the Map tabs.
Rule: You must save the map to the project in System Manager for it to be compiled. To compile the map, select Compile from the File menu. For more information, see "Testing maps".
Perform one of the following actions to close the current map, which is displaying in the tab window:
Result: Map Designer Express closes the current map before it opens a new one.
Result: Map Designer Express closes the current map and clears the tab window. To make a new map current, you can either create a new map or open an existing map.
Result: Map Designer Express automatically closes the current map before it exits.