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Search helps are used in functions that were usually assigned to matchcode objects. They are accessed by pressing the F4 function key on any screen field that has a matchcode assigned to it. In order to allow use of a search help in a screen field, developers must explicitly assign a search help to the desired field. Just as matchcode objects have matchcode IDs, search helps have two options or types, based on search paths. Elementary. When a search help references a single search path. Collective. When a search help includes several search paths. In this case, when a user presses the F4 function key in a field with a search help assigned to it, the system will offer the option of selecting one of the search paths defined. The value selection and the settings for online behavior are taken from the elementary search helps. To assign a search help to a table field, you must first create the search help; then, simply position the cursor on the field and select Goto Search help for field.
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The following are simple steps for creating both types of search helps. For creating an elementary search help, follow these steps: 1. In the initial ABAP dictionary screen, enter the name for the search help, select the object type Search help, and click on the Create button. 2. The system shows a dialog box for selecting the search help type. Choose Elementary search help, and then Continue. 3. Next the system displays the maintenance screen for elementary search helps. Enter a short description in the Short text field. 4. The next step is to indicate the selection method for the search help, which can be based on assigning a table, view, or tables with text tables. 5. If it is necessary to change the standard input process using the F4 function key, you can use the Search Help Exit, a function module that can be called from the F4 help processor under special conditions. Refer to the online documentation for details on this issue. 6. Select the dialog type for the search help. The dialog type defines how a hit list is displayed. There are three options for dialog types: Immediate value display, where the hit list will be immediately displayed Complex dialog with value restriction, where the users receive a dialog box for selecting the search help Dialog depending on number of values, in which case the hit list is displayed immediately when it contains fewer than 100 entries, and if it contains more, the system displays a dialog box for selecting the values 7. Define the search help parameters. The name of a parameter for elementary search help must match the name of corresponding field of the selection method. You also have to indicate whether it is an import or export parameter by setting the corresponding flag. 8. If users are going to access a search help using a hot key, then you have to define a position ID within the field Shortcut. All elementary search helps within a collective search help must have different 304
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Search Help Structure shortcuts. Usually, a hot key is assigned to an elementary search help when the elementary search help is going to be part of a collective search help. In this case, each of the elementary search helps will have its own hot key to identify it. 9. Finally the definition is saved and activated, and the system requests the introduction of a development class to the search help. Users can see information about the activation of the search help by selecting Utilities Act. log. For creating a collective search help, follow these steps: 1. In the initial ABAP dictionary screen, enter the name for the search help, select the object type Search Help, and click on the Create button. 2. The system shows a dialog box for selecting the search help type. Choose Collective search help, and then Continue. 3. Next the system displays the maintenance screen for search helps. Enter a short description in the Short text field. 4. Enter the parameters for the collective search help. You must indicate whether they are Import or Export parameters by setting the corresponding flag. Enter the name for the data element that describes the parameter contents in the field Data elements. The field Default value can be used for assigning a default value that will be used in case no specific value is specified when linking to a field. 5. If it is necessary to change the standard input process using the F4 function key, you can use the Search Help Exit, a function module that can be called under special conditions from the F4 help processor. Refer to the online documentation for details on this issue. 6. Select Search helps to include other search helps within the collective search help. The system displays an input mask, where you have to enter the names of the search helps to be included. If you don't want to offer one of the included search helps, set the flag Hidden next to it. Save this data. 7. The next step is to position the cursor on an assigned search help and select Parameter assignment. In the field Reference parameter you have to enter the names of the parameters from the elementary search help to which the corresponding parameters of the collective search help should be assigned. 8. Finally the definition should be saved and activated, and the system will request the introduction of a development class to the search help. The activation log can be found by selecting Utilities Act. log from the menu.
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