de.tsl2.nano.incubation.specification.rules

Class RuleDecisionTable<T>

java.lang.Object

de.tsl2.nano.incubation.specification.AbstractRunnable<T>

de.tsl2.nano.incubation.specification.rules.AbstractRule<T>

de.tsl2.nano.incubation.specification.rules.RuleDecisionTable<T>

All Implemented Interfaces:

de.tsl2.nano.core.execution.IRunnable<T,Map<String,Object>>, de.tsl2.nano.execution.IPRunnable<T,Map<String,Object>>, Serializable

public class RuleDecisionTable<T>
extends AbstractRule<T>

Reads a CSV-file containing a decision table and creates rule conditions. enables creating (business) rules on decision tables done by product managers in tools like Excel - to be transformed/interpreted by this class into a machine readable rule.

Each line starts with a key/name followed by one or more values. If the line starts with an empty cell, the key from last line will be used to append the values of the new line.
#KEYWORD Description:

 - name (otional)         : rule name. if null the file name will be used
 - description (optional) : rule description
 - parameter...(optional) : additional (used in condition expressions) parameters with default value
 - matrix                 : decision table
 

Decision Table Description:
The first line is the header, starting with keyword #KEY_MATRIX followed by condition names.
The following lines start with the name of a rule parameter, followed by all possible conditions.

Conditions:

 All conditions have the form: [OPERATOR]{VALUE}
 operators are: =, !=, <, <=, >, >=
 if no operator is given, = will be used
 a value must be a Comparable and can referenz another parameter
 

The first line that starts with an empty cell will end the matrix (decision table). the last line of the matrix will be the exptected result line.

Example:

 Name;ABR-7493;;;;;;;
 Beschreibung;"Rezeptfehler ""Betragshorror"" bei §302: Rezept kann ohne Änderung der Daten nicht abgerechnet werden.";;;;;;;
 ;"Rezeptfehler ""Betragshorror"" bei §300, Rechnungstyp Arzneimittel oder Hilfsmittel: Rezept kann ohne Änderung der Daten nicht abgerechnet werden.";;;;;;;
 ;"Rezeptfehler ""Betragshorror"" bei §300, Rechnungstyp Pflegehilfsmittel: Rezept kann ohne Änderung der Daten abgerechnet werden.";;;;;;;
 ;"*Rezeptfehler ""Betragshorror"" bei §300 Pflegehilfsmittel Irrläufer: Rezept kann ohne Änderung der Daten abgerechnet werden.";;;;;;;
 ;;;;;;;;
 MATRIX;R1;R2;R3;R4;R5;R6;R7;R8
 DIFF;0;0;0;0;>0;>0;>0;>0
 PARAGRAPH;300;300;302;302;300;300;302;302
 ISTHILFSMITTEL;Ja;Nein;Ja;Nein;Ja;Nein;Ja;Nein
 ERGBEBNIS;OK;OK;OK;OK;WARNUNG;FEHLER;FEHLER;FEHLER
 

Author:

Thomas Schneider / 2015

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
static char	PREFIX

Fields inherited from class de.tsl2.nano.incubation.specification.rules.AbstractRule

initialized

Fields inherited from class de.tsl2.nano.incubation.specification.AbstractRunnable

constraints, name, operation, operationContent, parameter, specifications

Constructor Summary

Constructors

Constructor and Description
RuleDecisionTable()

Method Summary

Modifier and Type	Method and Description
static RuleDecisionTable	fromCSV(String fileName)
static <T> RuleDecisionTable<T>	fromTree(STree<T> tree)
String	getOperation()
protected void	initDeserializing()
String	prefix() prefix
T	run(Map<String,Object> context, Object... extArgs)
String	toString()
STree	toTree() transforms the current decision table to a tree. each odd level holds the parameter names, followed by its conditions (the values of the table) in the next (even) level.

Methods inherited from class de.tsl2.nano.incubation.specification.rules.AbstractRule

importSubRules

Methods inherited from class de.tsl2.nano.incubation.specification.AbstractRunnable

addConstraint, addSpecification, addSpecification, asSequence, checkConstraint, checkedArguments, checkSpecification, createConstraints, createParameters, createSimpleParameters, getName, getParameter, getParameterList, markArgumentsAsSequence, parameters, setOperation

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

PREFIX

public static final char PREFIX

See Also:

Constant Field Values

Constructor Detail

RuleDecisionTable

public RuleDecisionTable()

Method Detail

prefix

public String prefix()

Description copied from class: AbstractRunnable

prefix

Overrides:

prefix in class AbstractRule<T>

Returns:

referencing name prefix

run

public T run(Map<String,Object> context,
             Object... extArgs)

toTree

public STree toTree()

transforms the current decision table to a tree. each odd level holds the parameter names, followed by its conditions (the values of the table) in the next (even) level. So, the tree nodes are strings or conditions.

Returns:

transformed decision table

fromTree

public static <T> RuleDecisionTable<T> fromTree(STree<T> tree)

fromCSV

public static RuleDecisionTable fromCSV(String fileName)

getOperation

public String getOperation()

Overrides:

getOperation in class AbstractRunnable<T>

initDeserializing

protected void initDeserializing()

Overrides:

initDeserializing in class AbstractRunnable<T>

toString

public String toString()

Overrides:

toString in class AbstractRunnable<T>