Created by Jerry Wang, last modified on Oct 02, 2014
该代码实现的功能:
- 为existing function创建一个空的ruleset
- 创建一条rule以及两个rule variable Customer Discount和promotion discount
rule的规则是: 如果promotion的折扣 大于customer，则使用promotion的折扣进行price计算，否则使用customer的折扣进行计算。 - 创建两个formular分别进行基于customer和promotion折扣的price计算
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: NUMBER
lo_element->set_element_type( if_fdt_constants=>gc_element_type_number ).
lo_element->set_element_type_attributes(
iv_length = 3
iv_decimals = 2
iv_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_discount
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( '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 = 3
iv_decimals = 2
iv_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 RULESET
lo_ruleset->set_ruleset_variables( lts_variable ).
* CREATE DECISION TABLE
DATA: 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 here
DATA: ls_column TYPE if_fdt_decision_table=>s_column.
ls_column-col_no = 1. "customer
ls_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. "item
ls_column-object_id = lv_item_ele_id.
INSERT ls_column INTO TABLE lts_column.
ls_column-col_no = 3. "customer discount
ls_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 CREATE
lo_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 here
DATA: 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 1
ls_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, COLUMN2
CLEAR 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, COLUMN3
CLEAR 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, COLUMN1
CLEAR ls_table_data-r_value.
ls_table_data-col_no = 1. "start of row 2
ls_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, COLUMN2
CLEAR 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, COLUMN3
CLEAR 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 3
ls_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 promotion
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_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 table
CLEAR: lts_column.
ls_column-col_no = 1. "customer
ls_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. "item
ls_column-object_id = lv_item_ele_id.
INSERT ls_column INTO TABLE lts_column.
ls_column-col_no = 3. "customer discount
ls_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 here
CLEAR: 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 1
ls_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, COLUMN2
CLEAR 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, COLUMN3
CLEAR 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, COLUMN1
CLEAR ls_table_data-r_value.
ls_table_data-col_no = 1. "start of row 2
ls_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, COLUMN2
CLEAR 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, COLUMN3
CLEAR 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 3
ls_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 here
DATA: 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 discount
CLEAR 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 later
DATA: 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 discount
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_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 price
lv_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(
EXPORTING
iv_deep = abap_true
IMPORTING
et_message = lt_message
ev_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'.
