gmf 中保存 xml resource 的方法

寫兩個方法在這裏,做個記錄,免得以後忘了;


public void save(IFileDelegate file, Object object) throws IOException ...{
        SysDesignDiagram designDiagram = (SysDesignDiagram) object;
        if(StringUtils.isEmpty(designDiagram.getName()))...{
            String path = FileUtil.toPackageWithoutExtension(file.getSourceRelativePath());
            designDiagram.setName(path);
        }
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();
        Resource resource = this.createResource();

        SysDesignFactory SysDesignFactory = new SysDesignFactoryImpl();
        DocumentRoot documentRoot = (DocumentRoot) SysDesignFactory
                .createDocumentRoot();

        documentRoot
                .getMixed()
                .add(
                        SysDesignPackage.Literals.DOCUMENT_ROOT__SYS_DESIGN_DIAGRAM,
                        object);
        resource.getContents().add(documentRoot);
        resource.save(outStream, getOptions());

        ByteArrayInputStream inStream = new ByteArrayInputStream(outStream
                .toByteArray());

        try ...{
            if(!file.exists())
                file.create(inStream);
            else
                file.setContents(inStream);
        } catch (Exception e) ...{
            throw new IOException("save file error.");
        } finally ...{
            IOUtils.closeQuietly(inStream);
        }
    }


創建資源

protected Resource createResource() ...{
        ResourceFactoryImpl resourceFactory = new SysDesignResourceFactoryImpl();
        return resourceFactory.createResource(URI
                .createURI(SysDesignPackage.eNS_URI));
    }

     


    public Object parse(IFileDelegate file, IProgressMonitor monitor)
            throws ModelParseException ...{
        if (file.exists()) ...{

            InputStream inStream = null;
            try ...{
                inStream = file.getContents();

                SysDesignDiagram diagram = (SysDesignDiagram) this.parse(
                        inStream, monitor);
                return diagram;
            } finally ...{
                IOUtils.closeQuietly(inStream);
            }
        }
        return null;
    }