Examples of net.datacrow.core.objects.DcObject

net.datacrow.core.objects.DcObject
This class is what it is all about. Each DcObject represents an item within Data Crow. DcObjects are very generic by nature. There are no direct getters and setters for their values. Instead the values are stored in a Map object and the values are retrieved by using the field indices.
It's recommended before starting new development of plugins to create so called helper classes for your new module. Examples of helper classes are {@link Software}and {@link Movie}.
DcObjects are managed and maintained by the Data Manager class ( {@link DataManager}. Each DcObject belongs to a (@link {@link DcModule}). @author Robert Jan van der Waals

                for (String[] values : lines) {
                    counter++;
                    if (isCanceled()) break;
                    if (counter == 0) continue;
                    
                    DcObject dco = module.getItem();
                    for (int fieldIdx = 0; fieldIdx < values.length; fieldIdx++) {
                        
                        String value = values[fieldIdx];
                        DcField field = mappings.getTarget(fieldIdx);
                        
                        if ((field.isUiOnly() && field.getValueType() != DcRepository.ValueTypes._DCOBJECTCOLLECTION && field.getValueType() != DcRepository.ValueTypes._PICTURE) ||  
                            field.getIndex() == DcObject._ID || field.getIndex() == DcObject._SYS_EXTERNAL_REFERENCES) continue;
                        
                        if (value != null && field.getValueType() == DcRepository.ValueTypes._DCOBJECTCOLLECTION) {
                            StringTokenizer st = new StringTokenizer(value, ",");
                            String s;
                            while (st.hasMoreElements()) {
                                s = (String) st.nextElement();
                                DataManager.createReference(dco, field.getIndex(), s);
                            }
                        } else {
                            setValue(dco, field.getIndex(), value, listener);
                        }
                    }
                    
                    dco.setIDs();
                    listener.notifyProcessed(dco);
                }
                
                reader.close();
            } catch (Exception e) {

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            this.module = module;
            this.listener = listener;
        }
    
        private DcObject parseItem(DcModule module, Element eItem) throws Exception {
            DcObject dco = module.getItem();
            dco.setIDs();
            String value;
            // get the object
            for (DcField field : module.getFields()) {
                
                if ((field.isUiOnly() && field.getValueType() != DcRepository.ValueTypes._DCOBJECTCOLLECTION && field.getValueType() != DcRepository.ValueTypes._PICTURE) ||  
                     field.getIndex() == DcObject._ID || field.getIndex() == DcObject._SYS_EXTERNAL_REFERENCES) continue;
                
                String fieldName = Converter.getValidXmlTag(field.getSystemName());
                NodeList nlField = eItem.getElementsByTagName(fieldName);
                
                if (nlField == null || nlField.getLength() == 0) continue;
                
                Element eField = (Element) nlField.item(0);
                
                if (field.getValueType() == DcRepository.ValueTypes._DCOBJECTCOLLECTION) {
                    // retrieve the items by their module name
                    DcModule referenceMod = DcModules.get(field.getReferenceIdx());
                    String referenceName = Converter.getValidXmlTag(referenceMod.getSystemObjectName());
                    NodeList elReferences = eField.getElementsByTagName(referenceName);
                    for (int j = 0; elReferences != null && j < elReferences.getLength(); j++) {
                        // retrieve the values by the display field index (the system display field index)
                        Element eReference = (Element) elReferences.item(j);
                        DcObject reference = referenceMod.getItem();
                        String referenceField = Converter.getValidXmlTag(reference.getField(reference.getSystemDisplayFieldIdx()).getSystemName());
                        NodeList nlRefField = eReference.getElementsByTagName(referenceField);
                        if (nlRefField != null && nlRefField.getLength() > 0) {
                            Node eRefField = nlRefField.item(0);
                            setValue(dco, field.getIndex(), eRefField.getTextContent(), listener);
                        } else {

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                      Element eItem = (Element) nlItems.item(i);
                      
                      if (eItem.getParentNode() != eTop)
                          continue;
                      
                      DcObject dco = parseItem(module, eItem);
                      
                      DcModule cm = module.getChild();
                      if (cm != null) {
                          String childName = Converter.getValidXmlTag(cm.getSystemObjectName());
                            NodeList nlChildren = eItem.getElementsByTagName(childName);
                            
                            for (int j = 0; nlChildren != null && j < nlChildren.getLength(); j++) {
                                Element eChild = (Element) nlChildren.item(j);
                                dco.addChild(parseItem(cm, eChild));
                            }
                      }
                      listener.notifyProcessed(dco);
                    } catch (Exception e) {
                        listener.notifyMessage(e.getMessage());

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    }


    @Override
    public DcObject getStorageMedium() {
        DcModule module = DcModules.get(importer.getModule());
        DcObject medium = null;
        if (module.getPropertyModule(DcModules._STORAGEMEDIA) != null) {
            Object sm =  fldStorageMedium.getValue();
            medium = sm instanceof DcObject ? (DcObject) sm : null;
        }

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        JLabel lblContainer = ComponentFactory.getLabel(DcResources.getText("lblContainer"));
        fldContainer = ComponentFactory.getReferenceField(DcModules._CONTAINER);
        
        String ID = settings.getString(DcRepository.ModuleSettings.stImportCDContainer);
        DcObject item = DataManager.getItem(DcModules._CONTAINER, ID);
        if (item != null)
            fldContainer.setValue(item);
        
        int idx = DcModules.get(importer.getModule()).getPropertyModule(DcModules._STORAGEMEDIA).getIndex();
        JLabel labelMedium = ComponentFactory.getLabel(DcResources.getText("lblStorageMedium"));

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     * @throws Exception
     */
    public DcObject query(DcObject dco) throws Exception {
        String link = (String) dco.getValue(DcObject._SYS_SERVICEURL); 
        if (link != null && link.length() > 0) {
            DcObject item = getItem(new URL(link));
            setServiceInfo(item);
            return item;
        }


        return null;

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        String value;
        String previousID = null;
        boolean concat = false;
        
        DcModule module = DcModules.get(df.getModule());
        DcObject template = module.getItem();
          
        while(rs.next()) {
          values = new ArrayList<String>();
          ID = rs.getString("ID");


          // concatenate previous result set (needed for multiple references)
          if (ID.equals(previousID)) {
            values = result.get(result.size() - 1);
            concat = true;
          }
          
          for (int i = 0; i < fields.length; i++) {
            field = module.getField(fields[i]);


            if (!field.isUiOnly() && 
              field.getValueType() != DcRepository.ValueTypes._STRING &&
              field.getValueType() != DcRepository.ValueTypes._DCOBJECTREFERENCE) {


              template.setValue(field.getIndex(), rs.getObject(i+1));
              value = template.getDisplayString(field.getIndex());
            } else {
              value = rs.getString(i + 1);
            }


            if (!concat) {

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        if (Utilities.isEmpty(name)) return null;
        
        // method 1: item is provided and exists
        int moduleIdx = DcModules.getReferencedModule(dco.getField(fieldIdx)).getIndex();
        DcModule module = DcModules.get(moduleIdx);
        DcObject ref = value instanceof DcObject ? (DcObject) value : null;


        // check if we are dealing with an external reference
        if (ref == null && module.getType() == DcModule._TYPE_EXTERNALREFERENCE_MODULE) {


            ref = getExternalReference(moduleIdx, name); 
        
        } else if (ref == null && module.getType() != DcModule._TYPE_EXTERNALREFERENCE_MODULE) {
            
            // method 2: simple external reference + display value comparison
            ref = DataManager.getObjectForString(moduleIdx, name);
    
            if (ref == null && fieldIdx != DcObject._SYS_EXTERNAL_REFERENCES) {
                ref = module.getItem();
                
                boolean onlinesearch = false;
                if (module.getType() == DcModule._TYPE_ASSOCIATE_MODULE) {
                    ref.setValue(DcAssociate._A_NAME, name);
                    onlinesearch = ref.getModule().deliversOnlineService() &&
                                   dco.getModule().getSettings().getBoolean(DcRepository.ModuleSettings.stOnlineSearchSubItems);  
                } else {
                    ref.setValue(ref.getSystemDisplayFieldIdx(), name);
                }
                
                if (onlinesearch) {
                    OnlineSearchHelper osh = new OnlineSearchHelper(moduleIdx, SearchTask._ITEM_MODE_FULL);
                    DcObject queried = osh.query(ref, name, new int[] {module.getSystemDisplayFieldIdx()});
                    ref = queried != null ? queried : ref;
                    osh.clear();
                }
                
                ref.setIDs();

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        String sql = "SELECT ID FROM " + extRefModule.getTableName() + " WHERE " +
            "UPPER(" + extRefModule.getField(ExternalReference._EXTERNAL_ID).getDatabaseFieldName() + ") = UPPER(?) AND " +
            "UPPER(" + extRefModule.getField(ExternalReference._EXTERNAL_ID_TYPE).getDatabaseFieldName() + ") = UPPER(?)";
        
        Connection conn = DatabaseManager.getConnection();
        DcObject result = null;
        
        try {
            PreparedStatement ps = conn.prepareStatement(sql);
            ps.setString(1, externalID);
            ps.setString(2, type);

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        }
        return result;
    }
    
    public static DcObject getObjectForString(int module, String reference) {
        DcObject dco = getObjectByExternalID(module, DcRepository.ExternalReferences._PDCR, reference); 
        dco = dco == null ? getObjectForDisplayValue(module, reference) : dco;
        return dco;
    }

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