modeldatafilereader.java

Sequoia ERP是一个真正的企业级开源ERP解决方案。它提供的模块包括：电子商务应用(e-commerce), POS系统(point of sales),知识管理,存货与仓库管理

        }
    }

    /** Creates a Collection with the dataFileName of each DataFile defined in the specified XML DataFile Descriptor file.
     * @return A Collection of dataFileName Strings
     */
    public Collection getDataFileNames() {
        Map ec = getModelDataFiles();

        return ec.keySet();
    }

    protected ModelDataFile createModelDataFile(Element dataFileElement) {
        ModelDataFile dataFile = new ModelDataFile();
        String tempStr;

        dataFile.name = UtilXml.checkEmpty(dataFileElement.getAttribute("name"));
        dataFile.typeCode = UtilXml.checkEmpty(dataFileElement.getAttribute("type-code"));
        dataFile.sender = UtilXml.checkEmpty(dataFileElement.getAttribute("sender"));
        dataFile.receiver = UtilXml.checkEmpty(dataFileElement.getAttribute("receiver"));

        tempStr = UtilXml.checkEmpty(dataFileElement.getAttribute("record-length"));
        if (tempStr != null && tempStr.length() > 0) {
            dataFile.recordLength = Integer.parseInt(tempStr);
        }
        tempStr = UtilXml.checkEmpty(dataFileElement.getAttribute("delimiter"));
        if (tempStr != null && tempStr.length() == 1) {
            dataFile.delimiter = tempStr.charAt(0);
        }

        dataFile.separatorStyle = UtilXml.checkEmpty(dataFileElement.getAttribute("separator-style"));
        dataFile.description = UtilXml.checkEmpty(dataFileElement.getAttribute("description"));

        NodeList rList = dataFileElement.getElementsByTagName("record");

        for (int i = 0; i < rList.getLength(); i++) {
            Element recordElement = (Element) rList.item(i);
            ModelRecord modelRecord = createModelRecord(recordElement);

            if (modelRecord != null) {
                dataFile.records.add(modelRecord);
            } else {
                Debug.logWarning("[ModelDataFileReader.createModelDataFile] Weird, modelRecord was null", module);
            }
        }

        for (int i = 0; i < dataFile.records.size(); i++) {
            ModelRecord modelRecord = (ModelRecord) dataFile.records.get(i);

            if (modelRecord.parentName.length() > 0) {
                ModelRecord parentRecord = dataFile.getModelRecord(modelRecord.parentName);

                if (parentRecord != null) {
                    parentRecord.childRecords.add(modelRecord);
                    modelRecord.parentRecord = parentRecord;
                } else {
                    Debug.logError("[ModelDataFileReader.createModelDataFile] ERROR: Could not find parentRecord with name " + modelRecord.parentName, module);
                }
            }
        }

        return dataFile;
    }

    protected ModelRecord createModelRecord(Element recordElement) {
        ModelRecord record = new ModelRecord();
        String tempStr;

        record.name = UtilXml.checkEmpty(recordElement.getAttribute("name"));
        record.typeCode = UtilXml.checkEmpty(recordElement.getAttribute("type-code"));

        record.tcMin = UtilXml.checkEmpty(recordElement.getAttribute("tc-min"));
        if (record.tcMin.length() > 0) record.tcMinNum = Long.parseLong(record.tcMin);
        record.tcMax = UtilXml.checkEmpty(recordElement.getAttribute("tc-max"));
        if (record.tcMax.length() > 0) record.tcMaxNum = Long.parseLong(record.tcMax);

        tempStr = UtilXml.checkEmpty(recordElement.getAttribute("tc-isnum"));
        if (tempStr != null && tempStr.length() > 0) {
            record.tcIsNum = Boolean.valueOf(tempStr).booleanValue();
        }

        tempStr = UtilXml.checkEmpty(recordElement.getAttribute("tc-position"));
        if (tempStr != null && tempStr.length() > 0) {
            record.tcPosition = Integer.parseInt(tempStr);
        }
        tempStr = UtilXml.checkEmpty(recordElement.getAttribute("tc-length"));
        if (tempStr != null && tempStr.length() > 0) {
            record.tcLength = Integer.parseInt(tempStr);
        }

        record.description = UtilXml.checkEmpty(recordElement.getAttribute("description"));
        record.parentName = UtilXml.checkEmpty(recordElement.getAttribute("parent-name"));
        record.limit = UtilXml.checkEmpty(recordElement.getAttribute("limit"));

        NodeList fList = recordElement.getElementsByTagName("field");
        int priorEnd = -1;

        for (int i = 0; i < fList.getLength(); i++) {
            Element fieldElement = (Element) fList.item(i);
            ModelField modelField = createModelField(fieldElement);

            // if the position is not specified, assume the start position based on last entry
            if ((i > 0) && (modelField.position == -1)) {
                modelField.position = priorEnd;
            }
            priorEnd = modelField.position + modelField.length;

            if (modelField != null) {
                record.fields.add(modelField);
            } else {
                Debug.logWarning("[ModelDataFileReader.createModelRecord] Weird, modelField was null", module);
            }
        }

        return record;
    }

    protected ModelField createModelField(Element fieldElement) {
        ModelField field = new ModelField();
        String tempStr;

        field.name = UtilXml.checkEmpty(fieldElement.getAttribute("name"));

        tempStr = UtilXml.checkEmpty(fieldElement.getAttribute("position"));
        if (tempStr != null && tempStr.length() > 0) {
            field.position = Integer.parseInt(tempStr);
        }
        tempStr = UtilXml.checkEmpty(fieldElement.getAttribute("length"));
        if (tempStr != null && tempStr.length() > 0) {
            field.length = Integer.parseInt(tempStr);
        }

        field.type = UtilXml.checkEmpty(fieldElement.getAttribute("type"));
        field.format = UtilXml.checkEmpty(fieldElement.getAttribute("format"));
        field.validExp = UtilXml.checkEmpty(fieldElement.getAttribute("valid-exp"));
        field.description = UtilXml.checkEmpty(fieldElement.getAttribute("description"));
        field.defaultValue = UtilXml.checkEmpty(fieldElement.getAttribute("default-value"));
        field.refField = UtilXml.checkEmpty(fieldElement.getAttribute("ref-field"));
        
        tempStr = UtilXml.checkEmpty(fieldElement.getAttribute("prim-key"));
        if (tempStr != null && tempStr.length() > 0) {
            field.isPk = Boolean.valueOf(tempStr).booleanValue();
        }

        tempStr = UtilXml.checkEmpty(fieldElement.getAttribute("ignored"));
        if (tempStr != null && tempStr.length() > 0) {
            field.ignored = Boolean.valueOf(tempStr).booleanValue();
        }

        tempStr = UtilXml.checkEmpty(fieldElement.getAttribute("expression"));
        if (tempStr != null && tempStr.length() > 0) {
            field.expression = Boolean.valueOf(tempStr).booleanValue();
        }

        return field;
    }

    protected Document getDocument(URL url) {
        if (url == null)
            return null;
        Document document = null;

        try {
            document = UtilXml.readXmlDocument(url);
        } catch (SAXException sxe) {
            // Error generated during parsing)
            Exception x = sxe;

            if (sxe.getException() != null) {
                x = sxe.getException();
            }
            x.printStackTrace();
        } catch (ParserConfigurationException pce) {
            // Parser with specified options can't be built
            pce.printStackTrace();
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }

        return document;
    }
}