Created by Jerry Wang, last modified on Oct 02, 2014

該代碼實現(xiàn)的功能:

為existing function創(chuàng)建一個空的ruleset

創(chuàng)建一條rule以及兩個rule variable Customer Discount和promotion discount
rule的規(guī)則是: 如果promotion的折扣 大于customer，則使用promotion的折扣進(jìn)行price計算，否則使用customer的折扣進(jìn)行計算。

創(chuàng)建兩個formular分別進(jìn)行基于customer和promotion折扣的price計算

REPORT zcreate_ruleset. DEFINE write_errors.IF &1 IS NOT INITIAL.LOOP AT &1 ASSIGNING <ls_message>.WRITE: <ls_message>-text.ENDLOOP.RETURN.ENDIF. END-OF-DEFINITION. DATA: lv_app_id TYPE if_fdt_types=>id,lv_func_id TYPE if_fdt_types=>id,lv_cust_ele_id TYPE if_fdt_types=>id,lv_item_ele_id TYPE if_fdt_types=>id,lv_fina_ele_id TYPE if_fdt_types=>id,lv_shel_ele_id TYPE if_fdt_types=>id. INITIALIZATION.lv_app_id = 'FA163E8EAB031EE48B847A9EF751D5F0'.lv_func_id = 'FA163E8EAB031EE48B847ADC6A96D5F0'.lv_cust_ele_id = 'FA163E8EAB031EE48B847ADC6A96F5F0'.lv_item_ele_id = 'FA163E8EAB031EE48B847ADC6A9715F0'.lv_fina_ele_id = 'FA163E8EAB031EE48B847ADC6A9775F0'.lv_shel_ele_id = 'FA163E8EAB031EE48B847ADC6A9755F0'. START-OF-SELECTION.DATA: lo_ruleset TYPE REF TO if_fdt_ruleset,lo_factory TYPE REF TO if_fdt_factory,lts_rule TYPE if_fdt_ruleset=>ts_rule,lts_variable TYPE if_fdt_ruleset=>ts_variable,lt_message TYPE if_fdt_types=>t_message,lv_boolean TYPE abap_bool,lts_expression TYPE if_fdt_ruleset=>ts_init_expr.FIELD-SYMBOLS: <ls_message> TYPE if_fdt_types=>s_message.lo_factory = cl_fdt_factory=>if_fdt_factory~get_instance(iv_application_id = lv_app_id ).lo_ruleset ?= lo_factory->get_ruleset( ).lo_ruleset->if_fdt_transaction~enqueue( ).lo_ruleset->set_ruleset_switch( iv_switch = if_fdt_ruleset=>gc_switch_on ).lo_ruleset->if_fdt_admin_data~set_name( 'price_calculation_rules' ).lo_ruleset->if_fdt_admin_data~set_texts( iv_short_text = 'price calc. rules'iv_text = 'price calculation rules' ).lo_ruleset->set_function_restriction(iv_function_id = lv_func_id ). * WE NEED TO CREATE RULESET VARIABLES AND * ASSIGNED TO lts_variable * Ruleset variables extend the function context, * but within the scope of the ruleset only. they are also based on data objects.DATA: lo_element TYPE REF TO if_fdt_element,ls_variable TYPE if_fdt_ruleset=>s_variable,lv_pro_discount TYPE if_fdt_types=>id,lv_cus_discount TYPE if_fdt_types=>id.lo_element ?= lo_factory->get_data_object( iv_data_object_type =if_fdt_constants=>gc_data_object_type_element ).lo_element->if_fdt_transaction~enqueue( ).lo_element->if_fdt_admin_data~set_name( 'customer_discount' ).lo_element->if_fdt_admin_data~set_texts( iv_short_text = 'Customer Discount' ). * SET type for customer_discount: NUMBERlo_element->set_element_type( if_fdt_constants=>gc_element_type_number ).lo_element->set_element_type_attributes(iv_length = 3iv_decimals = 2iv_only_positive = abap_true ).ls_variable-position = 1.ls_variable-data_object_id = lo_element->mv_id.INSERT ls_variable INTO TABLE lts_variable.lv_cus_discount = lo_element->mv_id. * CREATE RULE VARIABLE promotion_discountlo_element ?= lo_factory->get_data_object(iv_data_object_type = if_fdt_constants=>gc_data_object_type_element ).lo_element->if_fdt_transaction~enqueue( ).lo_element->if_fdt_admin_data~set_name( 'promotion_discount' ).lo_element->if_fdt_admin_data~set_texts(iv_short_text = 'promotion discount' ).lo_element->set_element_type( if_fdt_constants=>gc_element_type_number ).lo_element->set_element_type_attributes(iv_length = 3iv_decimals = 2iv_only_positive = abap_true ).ls_variable-position = 2.ls_variable-data_object_id = lo_element->mv_id.INSERT ls_variable INTO TABLE lts_variable.lv_pro_discount = lo_element->mv_id. * THESE TWO VARIABLES COULD ONLY BE USED WITHIN RULESETlo_ruleset->set_ruleset_variables( lts_variable ). * CREATE DECISION TABLEDATA: lo_decision_table TYPE REF TO if_fdt_decision_table,lts_column TYPE if_fdt_decision_table=>ts_column,lts_table_data TYPE if_fdt_decision_table=>ts_table_data,ls_expression TYPE if_fdt_ruleset=>s_init_expr.lo_decision_table ?= lo_factory->get_expression( iv_expression_type_id =if_fdt_constants=>gc_exty_decision_table ).lo_decision_table->if_fdt_transaction~enqueue( ).lo_decision_table->if_fdt_admin_data~set_name( 'calc_customer_discount' ).lo_decision_table->if_fdt_admin_data~set_texts(iv_short_text = 'calc. cust. discount'iv_text = 'calculate customer discount' ). * Code for table definition <<<lts_column>>> to be inserted hereDATA: ls_column TYPE if_fdt_decision_table=>s_column.ls_column-col_no = 1. "customerls_column-object_id = lv_cust_ele_id.ls_column-is_result = abap_false.INSERT ls_column INTO TABLE lts_column.ls_column-col_no = 2. "itemls_column-object_id = lv_item_ele_id.INSERT ls_column INTO TABLE lts_column.ls_column-col_no = 3. "customer discountls_column-object_id = lv_cus_discount.ls_column-is_result = abap_true.INSERT ls_column INTO TABLE lts_column.lo_decision_table->set_columns( lts_column ). * SET RESULT DATA OBJECT OF DECISION TABLE TO RULE VARIABLE WE JUST CREATElo_decision_table->if_fdt_expression~set_result_data_object(lv_cus_discount ). * ls_expression-position = 1. * ls_expression-id = lo_decision_table->mv_id. * ls_expression-change_mode = * if_fdt_ruleset=>gc_change_mode_update. * INSERT ls_expression INTO TABLE lts_expression. * Code for table content <<<lts_table_data>>> to be inserted hereDATA: ls_range TYPE if_fdt_range=>s_range,ls_table_data TYPE if_fdt_decision_table=>s_table_data.FIELD-SYMBOLS <lv_number> TYPE if_fdt_types=>element_number.ls_range-position = 1.ls_range-sign = if_fdt_range=>gc_sign_include.ls_range-option = if_fdt_range=>gc_option_equal.ls_table_data-col_no = 1. "start of row 1ls_table_data-row_no = 1.GET REFERENCE OF 'sap' INTO ls_range-r_low_value.INSERT ls_range INTO TABLE ls_table_data-ts_range.INSERT ls_table_data INTO TABLE lts_table_data. * ROW1, COLUMN2CLEAR ls_table_data-ts_range.ls_table_data-col_no = 2.ls_table_data-row_no = 1.GET REFERENCE OF 'ballpen' INTO ls_range-r_low_value.INSERT ls_range INTO TABLE ls_table_data-ts_range.INSERT ls_table_data INTO TABLE lts_table_data. * ROW1, COLUMN3CLEAR ls_table_data-ts_range.ls_table_data-col_no = 3.ls_table_data-row_no = 1.CREATE DATA ls_table_data-r_value TYPE if_fdt_types=>element_number.ASSIGN ls_table_data-r_value->* TO <lv_number>.<lv_number> = '0.15'.INSERT ls_table_data INTO TABLE lts_table_data. * ROW2, COLUMN1CLEAR ls_table_data-r_value.ls_table_data-col_no = 1. "start of row 2ls_table_data-row_no = 2.GET REFERENCE OF 'sap' INTO ls_range-r_low_value.INSERT ls_range INTO TABLE ls_table_data-ts_range.INSERT ls_table_data INTO TABLE lts_table_data. * ROW2, COLUMN2CLEAR ls_table_data-ts_range.ls_table_data-col_no = 2.ls_table_data-row_no = 2.GET REFERENCE OF 'pencil' INTO ls_range-r_low_value.INSERT ls_range INTO TABLE ls_table_data-ts_range.INSERT ls_table_data INTO TABLE lts_table_data. * ROW2, COLUMN3CLEAR ls_table_data-ts_range.ls_table_data-col_no = 3.ls_table_data-row_no = 2.CREATE DATA ls_table_data-r_value TYPE if_fdt_types=>element_number.ASSIGN ls_table_data-r_value->* TO <lv_number>.<lv_number> = '0.12'.INSERT ls_table_data INTO TABLE lts_table_data. * ROW3, COLUMN3????????????????CLEAR ls_table_data-r_value.ls_table_data-col_no = 3. "start of row 3ls_table_data-row_no = 3.CREATE DATA ls_table_data-r_value TYPE if_fdt_types=>element_number.ASSIGN ls_table_data-r_value->* TO <lv_number>.<lv_number> = '0'.INSERT ls_table_data INTO TABLE lts_table_data.lo_decision_table->set_table_data( lts_table_data ).ls_expression-position = 1.ls_expression-id = lo_decision_table->mv_id.ls_expression-change_mode = if_fdt_ruleset=>gc_change_mode_update.INSERT ls_expression INTO TABLE lts_expression. * Create second decision table for promotionlo_decision_table ?= lo_factory->get_expression( iv_expression_type_id =if_fdt_constants=>gc_exty_decision_table ).lo_decision_table->if_fdt_transaction~enqueue( ).lo_decision_table->if_fdt_admin_data~set_name( 'calc_promotion_discount' ).lo_decision_table->if_fdt_admin_data~set_texts(iv_short_text = 'calc. pro. discount'iv_text = 'calculate promotion discount' ). * set column for promotion decision tableCLEAR: lts_column.ls_column-col_no = 1. "customerls_column-object_id = lv_cust_ele_id.ls_column-is_result = abap_false.INSERT ls_column INTO TABLE lts_column.ls_column-col_no = 2. "itemls_column-object_id = lv_item_ele_id.INSERT ls_column INTO TABLE lts_column.ls_column-col_no = 3. "customer discountls_column-object_id = lv_pro_discount.ls_column-is_result = abap_true.INSERT ls_column INTO TABLE lts_column.lo_decision_table->set_columns( lts_column ).lo_decision_table->if_fdt_expression~set_result_data_object(lv_pro_discount ). "promotion discount * code for table content (lts_table_data) to be inserted hereCLEAR: ls_range, lts_table_data, ls_table_data.ls_range-position = 1.ls_range-sign = if_fdt_range=>gc_sign_include.ls_range-option = if_fdt_range=>gc_option_equal.ls_table_data-col_no = 1. "start of row 1ls_table_data-row_no = 1.GET REFERENCE OF 'oracle' INTO ls_range-r_low_value.INSERT ls_range INTO TABLE ls_table_data-ts_range.INSERT ls_table_data INTO TABLE lts_table_data. * ROW1, COLUMN2CLEAR ls_table_data-ts_range.ls_table_data-col_no = 2.ls_table_data-row_no = 1.GET REFERENCE OF 'notebook' INTO ls_range-r_low_value.INSERT ls_range INTO TABLE ls_table_data-ts_range.INSERT ls_table_data INTO TABLE lts_table_data. * ROW1, COLUMN3CLEAR ls_table_data-ts_range.ls_table_data-col_no = 3.ls_table_data-row_no = 1.CREATE DATA ls_table_data-r_value TYPE if_fdt_types=>element_number.ASSIGN ls_table_data-r_value->* TO <lv_number>.<lv_number> = '0.34'.INSERT ls_table_data INTO TABLE lts_table_data. * ROW2, COLUMN1CLEAR ls_table_data-r_value.ls_table_data-col_no = 1. "start of row 2ls_table_data-row_no = 2.GET REFERENCE OF 'oracle' INTO ls_range-r_low_value.INSERT ls_range INTO TABLE ls_table_data-ts_range.INSERT ls_table_data INTO TABLE lts_table_data. * ROW2, COLUMN2CLEAR ls_table_data-ts_range.ls_table_data-col_no = 2.ls_table_data-row_no = 2.GET REFERENCE OF 'glue' INTO ls_range-r_low_value.INSERT ls_range INTO TABLE ls_table_data-ts_range.INSERT ls_table_data INTO TABLE lts_table_data. * ROW2, COLUMN3CLEAR ls_table_data-ts_range.ls_table_data-col_no = 3.ls_table_data-row_no = 2.CREATE DATA ls_table_data-r_value TYPE if_fdt_types=>element_number.ASSIGN ls_table_data-r_value->* TO <lv_number>.<lv_number> = '0.52'.INSERT ls_table_data INTO TABLE lts_table_data. * ROW3, COLUMN3????????????????CLEAR ls_table_data-r_value.ls_table_data-col_no = 3. "start of row 3ls_table_data-row_no = 3.CREATE DATA ls_table_data-r_value TYPE if_fdt_types=>element_number.ASSIGN ls_table_data-r_value->* TO <lv_number>.<lv_number> = '0'.INSERT ls_table_data INTO TABLE lts_table_data.lo_decision_table->set_table_data( lts_table_data ).ls_expression-position = 2.ls_expression-id = lo_decision_table->mv_id.ls_expression-change_mode = if_fdt_ruleset=>gc_change_mode_update.INSERT ls_expression INTO TABLE lts_expression.lo_ruleset->set_ruleset_initializations( lts_expression ). * TODO: code for rules (lts_rule) to be inserted hereDATA: lo_rule TYPE REF TO if_fdt_rule,ls_rule TYPE if_fdt_ruleset=>s_rule,ls_cond_range TYPE if_fdt_range=>s_param_range,ls_rule_expr TYPE if_fdt_rule=>s_expression,lt_rule_expr TYPE if_fdt_rule=>t_expression,lv_formula_cus_disc TYPE if_fdt_types=>id,lv_formula_pro_disc TYPE if_fdt_types=>id.lo_rule ?= lo_factory->get_expression(iv_expression_type_id = if_fdt_constants=>gc_exty_rule ).lo_rule->if_fdt_transaction~enqueue( ).lo_rule->if_fdt_admin_data~set_texts( iv_text = 'apply discount' ). * promotion discount > cusomter discountCLEAR ls_range.ls_cond_range-parameter_id = lv_pro_discount.ls_range-position = 1.ls_range-sign = if_fdt_range=>gc_sign_include.ls_range-option = if_fdt_range=>gc_option_greater.ls_range-low = lv_cus_discount.INSERT ls_range INTO TABLE ls_cond_range-ts_range.lo_rule->set_condition_range( ls_cond_range ). *TODO define formulas, insert missing code laterDATA: lo_formula TYPE REF TO if_fdt_formula,lv_formula TYPE string.lo_formula ?= lo_factory->get_expression(iv_expression_type_id = if_fdt_constants=>gc_exty_formula ).lo_formula->if_fdt_transaction~enqueue( ).lo_formula->if_fdt_admin_data~set_name( 'apply_promotion_discount' ).lo_formula->if_fdt_admin_data~set_texts(iv_short_text = 'apply prom. discount'iv_text = 'apply promotion discount' ).lo_formula->if_fdt_expression~set_result_data_object(lv_fina_ele_id ). "final price * Final Price = Shelf Price / ( 1 + Promotion Discount ) * lv_formula = ‘00505683359d02ee98fc41ef3591caa8’ &&lv_formula = lv_shel_ele_id &&` / ( 1 + ` && lv_pro_discount && ` )`.lo_formula->set_formula( lv_formula ).lv_formula_pro_disc = lo_formula->mv_id. * The second formula, which will calculate the customer discountlo_formula ?= lo_factory->get_expression(iv_expression_type_id = if_fdt_constants=>gc_exty_formula ).lo_formula->if_fdt_transaction~enqueue( ).lo_formula->if_fdt_admin_data~set_name( 'apply_customer_discount' ).lo_formula->if_fdt_admin_data~set_texts(iv_short_text = 'apply cust. discount'iv_text = 'apply customer discount' ).lo_formula->if_fdt_expression~set_result_data_object(lv_fina_ele_id ). "final pricelv_formula = lv_shel_ele_id &&` / ( 1 + ` && lv_cus_discount && ` )`.lo_formula->set_formula( lv_formula ).lv_formula_cus_disc = lo_formula->mv_id.ls_rule_expr-position = 1.ls_rule_expr-change_mode = if_fdt_rule=>gc_change_mode_update.ls_rule_expr-expression = lv_formula_pro_disc.INSERT ls_rule_expr INTO TABLE lt_rule_expr.lo_rule->set_true_action_extended( it_expression = lt_rule_expr ).CLEAR lt_rule_expr.ls_rule_expr-expression = lv_formula_cus_disc.INSERT ls_rule_expr INTO TABLE lt_rule_expr.lo_rule->set_false_action_extended( it_expression = lt_rule_expr ).ls_rule-position = 1.ls_rule-rule_id = lo_rule->mv_id.ls_rule-switch = if_fdt_ruleset=>gc_switch_on.INSERT ls_rule INTO TABLE lts_rule.lo_ruleset->set_rules( lts_rule ).WRITE: / 'calling check logic...'. * lt_message = lo_ruleset->if_fdt_transaction~check( iv_deep = abap_true ). * write_errors lt_message.WRITE: / 'ruleset check passed, ready for activation'.lo_ruleset->if_fdt_transaction~activate(EXPORTINGiv_deep = abap_trueIMPORTINGet_message = lt_messageev_activation_failed = lv_boolean ).write_errors lt_message.lo_ruleset->if_fdt_transaction~save( EXPORTING iv_deep = abap_true ).lo_ruleset->if_fdt_transaction~dequeue(EXPORTING iv_deep = abap_true ).WRITE: / 'Rule set created successfully'.

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