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

        panelReturn.setVisible(true);
        panelLend.setVisible(false);
        
        if (objects.size() == 1) {
            tableLoans.clear();
            DcObject dco = objects.get(0);
            for (Loan loan : DataManager.getLoans(dco.getID())) {
                if (loan.getValue(Loan._B_ENDDATE) != null) 
                    tableLoans.add(loan, true);
            }
        }
    }

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    @SuppressWarnings("unchecked")
    protected void createReferences(DcObject dco) {
        for (DcField field : dco.getFields()) {        
            Object value = dco.getValue(field.getIndex());
            if (field.getValueType() == DcRepository.ValueTypes._DCOBJECTREFERENCE) {
                DcObject reference = value instanceof DcObject ? (DcObject) value : null;
                if (reference == null) continue;
                
                // also created references for the sub items of this reference...
                createReferences(reference);
                
                try { 
                    DcObject existing = DataManager.getItem(reference.getModule().getIndex(), reference.getID());
                    existing = existing == null ? DataManager.getObjectForString(reference.getModule().getIndex(), reference.toString()) : existing;
                    if (existing == null) {
                        // save the value that was set
                        reference.setValidate(false);
                        reference.saveNew(false);
                        reference.setValidate(true);
                    } else {
                        // reuse the existing value
                        dco.setValue(field.getIndex(), existing);
                    }


                } catch (Exception e) {
                    logger.error("Error (" + e + ") while creating a new reference item; " + reference, e);
                }
                
            } else if (field.getValueType() == DcRepository.ValueTypes._DCOBJECTCOLLECTION) {
                if (value == null)
                    continue;
                
                for (DcMapping mapping : (Collection<DcMapping>) value) {
                    DcObject reference = mapping.getReferencedObject();
                    try { 
                        if (reference == null) continue;
                        
                        // also created references for the sub items of this reference...
                        createReferences(reference);
                        
                        DcObject existing = DataManager.getItem(reference.getModule().getIndex(), reference.getID());
                        existing = existing == null ? DataManager.getObjectForString(reference.getModule().getIndex(), reference.toString()) : existing;


                        if (existing == null) {
                            reference.setValidate(false);
                            reference.saveNew(false);
                            reference.setValidate(true);
                        } else {
                            mapping.setValue(DcMapping._B_REFERENCED_ID, existing.getID());
                        }
                    } catch (Exception e) {
                        logger.error("Error (" + e + ") while creating a new reference item; " + reference, e);
                    }
                }

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    /**
     * Converts a query result (not detailed) to a Data Crow Object
     * @param result query result
     */
    public DcObject convertToDcObject(FreedbQueryResult result) {
        DcObject audioCD = DcModules.get(DcModules._AUDIOCD).getItem();
        audioCD.setValue(AudioCD._A_TITLE, result.getAlbum());
        audioCD.setValue(AudioCD._F_ARTISTS, result.getArtist());
        audioCD.setValue(AudioCD._G_GENRES, result.getCategory());
        audioCD.addExternalReference(DcRepository.ExternalReferences._DISCID, result.getDiscId());
        return audioCD;
    }

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    /**
     * Converts a read result (detailed) to a Data Crow Object
     * @param result read result
     */
    public DcObject convertToDcObject(FreedbReadResult result) {
        DcObject audioCD = DcModules.get(DcModules._AUDIOCD).getItem();
        
        String title = result.getAlbum();
        if (title != null && title.length() > 0)
          title = title.endsWith("\r") || title.endsWith("\n") ? title.substring(0, title.length() - 1) : title;
        
        audioCD.setValue(AudioCD._A_TITLE, title);
        
        DataManager.createReference(audioCD, AudioCD._F_ARTISTS, result.getArtist());
        audioCD.addExternalReference(DcRepository.ExternalReferences._DISCID, result.getDiscId());
        setGenres(audioCD, result.getCategory());        
        
        int year = Utilities.getIntegerValue(result.getYear());
        audioCD.setValue(AudioCD._C_YEAR, new Integer(year));
        
        for (int i = 0; i < result.getTracksNumber(); i++) {
            DcObject track = DcModules.get(DcModules._AUDIOTRACK).getItem();
            String lyric = result.getTrackComment(i);
            track.setValue(AudioTrack._F_TRACKNUMBER, new Integer(i + 1));
            track.setValue(AudioTrack._A_TITLE, result.getTrackTitle(i));
            track.setValue(AudioTrack._G_LYRICS, lyric);
            track.setValue(AudioTrack._H_PLAYLENGTH, result.getTrackSeconds(i));
            audioCD.addChild(track);
        }
        
        audioCD.setIDs();
        return audioCD;

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        for (DcModule module : DcModules.getAllModules()) {


            if (module.isAbstract() || module.getType() == DcModule._TYPE_TEMPLATE_MODULE) continue;
            
            DcObject dco = module.getItem();
            for (DcField fld : module.getFields()) {
              logger.info("Creating persistant field for module: " + module.getTableName() + ": " + fld);
                if (fld.getValueType() == DcRepository.ValueTypes._DCOBJECTCOLLECTION) {
                  
                  if (DcModules.get(fld.getReferenceIdx()).getType() != DcModule._TYPE_ASSOCIATE_MODULE)
                    continue;
                  
                  fldPersist = module.getPersistentField(fld.getIndex());
                  
                    try {
                        DcModule mm = DcModules.get(DcModules.getMappingModIdx(fld.getModule(), fld.getReferenceIdx(), fld.getIndex()));


                        sql = 
                          " select objectid, referencedid from " + mm.getTableName() + 
                          " inner join " + DcModules.get(fld.getReferenceIdx()).getTableName() + 
                          " on " + DcModules.get(fld.getReferenceIdx()).getTableName() + ".ID = " +  mm.getTableName() + ".referencedID " +
                          " order by objectid, name";
                        
                        rs = DatabaseManager.executeSQL(sql);
                        
                        String prevID = null;
                        while (rs.next()) {
                            ID = rs.getString(1);
                            referencedID = rs.getString(2);
                            if (!ID.equals(prevID)) {
                              sql = "update " + dco.getModule().getTableName() + " set " + 
                                fldPersist.getDatabaseFieldName() + " = '" + referencedID + "' " +
                                "where ID ='" + ID + "'";
                              DatabaseManager.executeSQL(sql);
                            }

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        for (DcModule module : DcModules.getAllModules()) {


            if (module.isAbstract() || module.getType() == DcModule._TYPE_TEMPLATE_MODULE) continue;
            
            DcObject dco = module.getItem();
            for (DcField fld : module.getFields()) {
                logger.info("Creating persistant field for module: " + module.getTableName() + ": " + fld);
                if (fld.getValueType() == DcRepository.ValueTypes._DCOBJECTCOLLECTION) {
                    try {
                        DcModule mm = DcModules.get(DcModules.getMappingModIdx(fld.getModule(), fld.getReferenceIdx(), fld.getIndex()));


                        sql = "select distinct objectid from " + mm.getTableName();
                        rs = DatabaseManager.executeSQL(sql);
                        
                        while (rs.next()) {
                            ID = rs.getString(1);
                            sql = "select top 1 referencedid from " + mm.getTableName() + " where objectid = '" + ID + "'";
                            rs2 = DatabaseManager.executeSQL(sql);
                            if (rs2.next()) {
                                dco.clearValues();
                                
                                referenceID = rs2.getString(1);
                                dco.setValueLowLevel(DcObject._ID, ID);
                                fldPersist = module.getPersistentField(fld.getIndex());
                                dco.setValue(fldPersist.getIndex(), referenceID);
                                dco.setUpdateGUI(false);
                                try {
                                    dco.saveUpdate(false, false);
                                } catch (Exception e) {
                                    logger.error(e, e);
                                }
                            }
                            rs2.close();

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            for (String filename : files) {


                if  (client.cancelled()) break;


                DcObject dco = parse(filename);
                
                DcModules.getCurrent().getCurrentInsertView().add(dco, false);
                client.updateProgressBar(counter++);
            }
        } finally {

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     * @param filename
     * @return The result (never null)
     */
    protected DcObject parse(String filename) {
        client.addMessage(DcResources.getText("msgProcessingFileX", filename));
        DcObject dco = importer.parse(filename, client.getDirectoryUsage()); 
            
        if (client.getStorageMedium() != null) { 
            for (DcField  field : dco.getFields()) {
                if (field.getSourceModuleIdx() == DcModules._STORAGEMEDIA)
                    dco.setValue(field.getIndex(), client.getStorageMedium());
            }
        }


        if (client.getDcContainer() != null && dco.getField(DcObject._SYS_CONTAINER) != null) {
            dco.setValue(DcObject._SYS_CONTAINER, client.getDcContainer());
        }
        
        dco.applyTemplate();
        dco.setIDs();
        
        try {
            sleep(200);
        } catch (Exception e) {}

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        return true;
    }    
    
    @Override
    public DcObject parse(String filename, int directoryUsage) {
        DcObject software = DcModules.get(DcModules._SOFTWARE).getItem();
        
        try {
            software.setValue(Software._A_TITLE, getName(filename, directoryUsage));
            software.setValue(Software._SYS_FILENAME, filename);
          Hash.getInstance().calculateHash(software);
        } catch (Exception exp) {
            getClient().addMessage(DcResources.getText("msgCouldNotReadInfoFrom", filename));
        }

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            getClient().addMessage(DcResources.getText("msgSkippingAlreadyImportedFile", 
                                new String[] {filename, items.get(0).toString()}));
            
        } else {
            getClient().addMessage(DcResources.getText("msgProcessingFileX", filename));
            DcObject dco = parse(filename, getClient().getDirectoryUsage());
                
            if (getClient().getStorageMedium() != null) { 
                for (DcField  field : dco.getFields()) {
                    if (field.getSourceModuleIdx() == DcModules._STORAGEMEDIA)
                        DataManager.createReference(dco, field.getIndex(), getClient().getStorageMedium());
                }
            }
    
            if (getClient().getDcContainer() != null && dco.getModule().isContainerManaged())
                DataManager.createReference(dco, DcObject._SYS_CONTAINER, getClient().getDcContainer());
            
            dco.setLastInLine(last);
            dco.applyTemplate();
            dco.setIDs();
            afterParse(dco);
        }
    }

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