Examples with CompatibilityUpgradeService org.apache.cayenne.project.compatibility.CompatibilityUpgradeService used on opensource projects

Example 1 with CompatibilityUpgradeService

use of org.apache.cayenne.project.compatibility.CompatibilityUpgradeService in project cayenne by apache.

the class CompatibilityDataChannelDescriptorLoader method load.

@Override
public ConfigurationTree<DataChannelDescriptor> load(Resource configurationResource) throws ConfigurationException {
    if (configurationResource == null) {
        throw new NullPointerException("Null configurationResource");
    }
    if (!(upgradeServiceProvider.get() instanceof CompatibilityUpgradeService)) {
        throw new ConfigurationException("CompatibilityUpgradeService expected");
    }
    CompatibilityUpgradeService upgradeService = (CompatibilityUpgradeService) upgradeServiceProvider.get();
    UpgradeMetaData metaData = upgradeService.getUpgradeType(configurationResource);
    if (metaData.getUpgradeType() == UpgradeType.UPGRADE_NOT_NEEDED) {
        return super.load(configurationResource);
    }
    if (metaData.getUpgradeType() == UpgradeType.DOWNGRADE_NEEDED) {
        throw new ConfigurationException("Unable to load configuration from %s: " + "It was created using a newer version of the Modeler", configurationResource.getURL());
    }
    if (metaData.getUpgradeType() == UpgradeType.INTERMEDIATE_UPGRADE_NEEDED) {
        throw new ConfigurationException("Unable to load configuration from %s: " + "Open the project in the older Modeler to do an intermediate upgrade.", configurationResource.getURL());
    }
    URL configurationURL = configurationResource.getURL();
    upgradeService.upgradeProject(configurationResource);
    Document projectDocument = documentProvider.getDocument(configurationURL);
    if (projectDocument == null) {
        throw new ConfigurationException("Unable to upgrade " + configurationURL);
    }
    logger.info("Loading XML configuration resource from " + configurationURL);
    final DataChannelDescriptor descriptor = new DataChannelDescriptor();
    descriptor.setConfigurationSource(configurationResource);
    descriptor.setName(nameMapper.configurationNodeName(DataChannelDescriptor.class, configurationResource));
    try {
        DOMSource source = new DOMSource(projectDocument);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        TransformerFactory transFactory = TransformerFactory.newInstance();
        transFactory.newTransformer().transform(source, new StreamResult(baos));
        InputSource isource = new InputSource(source.getSystemId());
        isource.setByteStream(new ByteArrayInputStream(baos.toByteArray()));
        XMLReader parser = Util.createXmlReader();
        LoaderContext loaderContext = new LoaderContext(parser, handlerFactory);
        loaderContext.addDataMapListener(new DataMapLoaderListener() {

            @Override
            public void onDataMapLoaded(DataMap dataMap) {
                descriptor.getDataMaps().add(dataMap);
            }
        });
        DataChannelHandler rootHandler = new DataChannelHandler(this, descriptor, loaderContext);
        parser.setContentHandler(rootHandler);
        parser.setErrorHandler(rootHandler);
        parser.parse(isource);
    } catch (Exception e) {
        throw new ConfigurationException("Error loading configuration from %s", e, configurationURL);
    }
    // Finally upgrade model, if needed
    upgradeService.upgradeModel(configurationResource, descriptor);
    return new ConfigurationTree<>(descriptor, null);
}

Example 2 with CompatibilityUpgradeService

use of org.apache.cayenne.project.compatibility.CompatibilityUpgradeService in project cayenne by apache.

the class CompatibilityDataMapLoader method load.

@Override
public DataMap load(Resource configurationResource) throws CayenneRuntimeException {
    Document document = documentProvider.getDocument(configurationResource.getURL());
    // no document yet in provider, maybe DataMap is directly loaded
    if (document == null) {
        if (!(upgradeServiceProvider.get() instanceof CompatibilityUpgradeService)) {
            throw new ConfigurationException("CompatibilityUpgradeService expected");
        }
        // try to upgrade datamap directly
        CompatibilityUpgradeService upgradeService = (CompatibilityUpgradeService) upgradeServiceProvider.get();
        upgradeService.upgradeDataMap(configurationResource);
        document = documentProvider.getDocument(configurationResource.getURL());
        // still no document, try to load it without upgrade, though it likely will fail
        if (document == null) {
            return super.load(configurationResource);
        }
    }
    final DataMap[] maps = new DataMap[1];
    try {
        DOMSource source = new DOMSource(document);
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        TransformerFactory transFactory = TransformerFactory.newInstance();
        transFactory.newTransformer().transform(source, new StreamResult(baos));
        InputSource isource = new InputSource(source.getSystemId());
        isource.setByteStream(new ByteArrayInputStream(baos.toByteArray()));
        XMLReader parser = Util.createXmlReader();
        LoaderContext loaderContext = new LoaderContext(parser, handlerFactory);
        loaderContext.addDataMapListener(dataMap -> maps[0] = dataMap);
        RootDataMapHandler rootHandler = new RootDataMapHandler(loaderContext);
        parser.setContentHandler(rootHandler);
        parser.setErrorHandler(rootHandler);
        parser.parse(isource);
    } catch (Exception e) {
        throw new CayenneRuntimeException("Error loading configuration from %s", e, configurationResource.getURL());
    }
    if (maps[0] == null) {
        throw new CayenneRuntimeException("Unable to load data map from %s", configurationResource.getURL());
    }
    DataMap map = maps[0];
    if (map.getName() == null) {
        // set name based on location if no name provided by map itself
        map.setName(mapNameFromLocation(configurationResource.getURL().getFile()));
    }
    return map;
}