Examples of com.dtrules.session.RuleSet

com.dtrules.session.RuleSet
Defines the set of artifacts which make up a logical set of rules. These include the schema for the rules (The Entity Description Dictionary or EDD) as well as the entityfactory created from the EDD. A Rule Set also includes the decision tables, and a set of mappings to map XML data into the Schema defined by the EDD.

This implementation is really just a place holder. We need to explore how to define sets of Rules, their schemas, their decision tables and the entry points into these tables, the connections between rules and databases, and rules and perhaps several UI implementations. This is a much more complex problem than it first appears. @author paul snowJan 17, 2007

     *                    assumed that this Entity already exists.
     * @return true if the attribute was successfully added. 
   */
  public boolean createAttribute(final String rulesetname, final REntityEntry attribute) {
        try {
            RuleSet  rs     = getRuleset(rulesetname);
            IREntity entity = rs.getEntityFactory(session).findRefEntity(attribute.attribute);
            entity.addAttribute(attribute);
            return true;
        } catch (RulesException e) {
            return false;
        }

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     * @param entityname    The entity name of intrest.
     * @return              The list of Entity Entries that define the attributes of the Entity
     */
    public List<REntityEntry> getEntityEntries(String rulesetname, String entityname){
        ArrayList<REntityEntry> entries = new ArrayList<REntityEntry>();
        RuleSet                 rs      = getRuleset(rulesetname);
        IREntity entity;
        try {
            entity = rs.getEntityFactory(session).findRefEntity(RName.getRName(entityname));
            Iterator<RName>         attribs = entity.getAttributeIterator();
            
            while(attribs.hasNext()){
                entries.add(entity.getEntry(attribs.next()));
            }

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    /**
     * Create a new Decision Table
     */
  public RDecisionTable createDecisionTable(String rulesetname, String decisiontablename) 
            throws RulesException{
    RuleSet rs     = getRuleset(rulesetname);
        return rs.getEntityFactory(session).newDecisionTable(decisiontablename,session);
  }

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   * @see com.dtrules.admin.IRulesAdminService#getAttributes(java.lang.String, java.lang.String)
   */
  public List getAttributes(String rulesetname, String entityName) {
        if(rd==null)return null;
        try {
            RuleSet rs = rd.getRuleSet(RName.getRName(rulesetname));
            Iterator it = rs.getEntityFactory(session)
                          .findRefEntity(RName.getRName(entityName)).getAttributeIterator();
            return getList(it);
        } catch (RulesException e) {
            return null;
        }

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  /* (non-Javadoc)
   * @see com.dtrules.admin.IRulesAdminService#getDecisionTable(java.lang.String, java.lang.String)
   */
  public RDecisionTable getDecisionTable(String rulesetname, String DecisionTableName) {
        try {
            RuleSet rs = rd.getRuleSet(RName.getRName(rulesetname));
            return rs.getEntityFactory(session)
                   .findTable(RName.getRName(DecisionTableName));
        } catch (RulesException e) {
            return null;
        } 
  }

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   * @see com.dtrules.admin.IRulesAdminService#getDecisionTables(java.lang.String)
   */
  public List getDecisionTables(String rulesetname) {
    if(rd==null)return null;
        try {
            RuleSet rs = rd.getRuleSet(RName.getRName(rulesetname));
            Iterator it = rs.getEntityFactory(session).getDecisionTableRNameIterator();
            return getList(it);
        } catch (RulesException e) {
            return null;
        }
  }

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    /**
     * Updates the Decision Table XML specified in the RuleSet with the Decision Tables as 
     * currently held in memory.  
     */
    public void saveDecisionTables(RSession session, String rulesetname) throws RulesException {
        RuleSet       rs       = rd.getRuleSet(RName.getRName(rulesetname));
        String        filepath = rs.getFilepath();
        String        filename = rs.getDT_XMLName();
        
        OutputStream out;
        try {
            out = new FileOutputStream(filepath+filename);
        } catch (FileNotFoundException e) {

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     * @param session The session which gives us the outputstreams for debug statements and trace statements
     * @param rulesetname The Rule Set to be written out to the output stream
     * @throws RulesException
     */
  public void saveDecisionTables(OutputStream out, RSession session, String rulesetname) throws RulesException {
      RuleSet       rs       = rd.getRuleSet(RName.getRName(rulesetname));
        EntityFactory ef       = rs.getEntityFactory(session);
        
        PrintStream  ps  = new PrintStream(out);
        Iterator<RName> tables = ef.getDecisionTableRNameIterator();
        ps.println("<decision_tables>");
        while(tables.hasNext()){

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    public static void main(String args[]){
        String path = "C:\\eclipse\\workspace\\EB_POC\\new_york_EB\\xml\\";
        String file = path + "DTRules.xml";    
    
        RulesDirectory    rd      = new RulesDirectory("",file);
        RuleSet           rs      = rd.getRuleSet(RName.getRName("ebdemo"));
        RSession          session;
        try {
            OutputStream  out     = new FileOutputStream("c:\\temp\\dt.xml");
                          session = new RSession(rs);
            RulesAdminService admin   = new RulesAdminService(session, rd);

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            System.out.println(e1.toString());
        }
    }


    public void saveEDD(RSession session, String rulesetname) throws RulesException {
        RuleSet       rs       = rd.getRuleSet(RName.getRName(rulesetname));
        EntityFactory ef       = rs.getEntityFactory(session);
        String        filepath = rs.getFilepath();
        String        filename = rs.getEDD_XMLName();
        
        OutputStream out;
        try {
            out = new FileOutputStream(filepath+filename);
        } catch (FileNotFoundException e) {

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