Examples with ExtensionType io.siddhi.doc.gen.metadata.ExtensionType used on opensource projects

Example 1 with ExtensionType

use of io.siddhi.doc.gen.metadata.ExtensionType in project siddhi by wso2.

the class DocumentationUtils method addExtensionMetaDataIntoNamespaceList.

/**
 * Generate extension meta data from the annotated data in the class
 *
 * @param namespaceList  The list of namespaces to which the new extension will be added
 * @param extensionClass Class from which meta data should be extracted from
 * @param logger         The maven plugin logger
 * @param includeOrigin  Add origin to the docs
 */
private static void addExtensionMetaDataIntoNamespaceList(List<NamespaceMetaData> namespaceList, Class<?> extensionClass, Log logger, boolean includeOrigin) {
    Extension extensionAnnotation = extensionClass.getAnnotation(Extension.class);
    if (extensionAnnotation != null) {
        // Discarding extension classes without annotation
        ExtensionMetaData extensionMetaData = new ExtensionMetaData();
        // Finding extension type
        String extensionType = null;
        for (Map.Entry<ExtensionType, Class<?>> entry : ExtensionType.getSuperClassMap().entrySet()) {
            Class<?> superClass = entry.getValue();
            if (superClass.isAssignableFrom(extensionClass) && superClass != extensionClass) {
                extensionType = entry.getKey().getValue();
                break;
            }
        }
        // Discarding the extension if it belongs to an unknown type
        if (extensionType == null) {
            logger.warn("Discarding extension (belonging to an unknown extension type): " + extensionClass.getCanonicalName());
            return;
        }
        extensionMetaData.setName(extensionAnnotation.name());
        extensionMetaData.setDescription(extensionAnnotation.description());
        extensionMetaData.setDeprecated(extensionAnnotation.deprecated());
        if (includeOrigin) {
            Manifest manifest = getManifest(extensionClass);
            Attributes attributes = manifest.getMainAttributes();
            extensionMetaData.setOriginName(attributes.getValue("Bundle-Name"));
            extensionMetaData.setOriginVersion(attributes.getValue("Bundle-Version"));
        }
        // Adding query parameters
        ParameterMetaData[] parameters = new ParameterMetaData[extensionAnnotation.parameters().length];
        Map<String, ParameterMetaData> parameterMap = new HashMap<>();
        for (int i = 0; i < extensionAnnotation.parameters().length; i++) {
            Parameter parameterAnnotation = extensionAnnotation.parameters()[i];
            ParameterMetaData parameter = new ParameterMetaData();
            parameter.setName(parameterAnnotation.name());
            parameter.setType(Arrays.asList(parameterAnnotation.type()));
            parameter.setDescription(parameterAnnotation.description());
            parameter.setOptional(parameterAnnotation.optional());
            parameter.setDynamic(parameterAnnotation.dynamic());
            parameter.setDefaultValue(parameterAnnotation.defaultValue());
            parameterMap.put(parameter.getName(), parameter);
            parameters[i] = parameter;
        }
        extensionMetaData.setParameters(Arrays.asList(parameters));
        // Adding parameter overloads
        if (extensionAnnotation.parameterOverloads().length > 0) {
            ParameterOverloadMetaData[] parameterOverloads = new ParameterOverloadMetaData[extensionAnnotation.parameterOverloads().length];
            for (int i = 0; i < extensionAnnotation.parameterOverloads().length; i++) {
                ParameterOverload parameterOverloadAnnotation = extensionAnnotation.parameterOverloads()[i];
                ParameterOverloadMetaData parameterOverload = new ParameterOverloadMetaData();
                ParameterMetaData[] overloadParameters = new ParameterMetaData[parameterOverloadAnnotation.parameterNames().length];
                for (int j = 0; j < parameterOverloadAnnotation.parameterNames().length; j++) {
                    ParameterMetaData parameterMetaData = parameterMap.get(parameterOverloadAnnotation.parameterNames()[j]);
                    if (parameterMetaData != null) {
                        overloadParameters[j] = parameterMetaData;
                    } else if (parameterOverloadAnnotation.parameterNames()[j].equals(SiddhiConstants.REPETITIVE_PARAMETER_NOTATION)) {
                        ParameterMetaData repetitiveParamMetaData = new ParameterMetaData();
                        ParameterMetaData previousParameterMetaData = parameterMap.get(parameterOverloadAnnotation.parameterNames()[j - 1]);
                        repetitiveParamMetaData.setName(SiddhiConstants.REPETITIVE_PARAMETER_NOTATION);
                        repetitiveParamMetaData.setType(previousParameterMetaData.getType());
                        repetitiveParamMetaData.setDescription(previousParameterMetaData.getDescription());
                        repetitiveParamMetaData.setOptional(previousParameterMetaData.isOptional());
                        repetitiveParamMetaData.setDynamic(previousParameterMetaData.isDynamic());
                        repetitiveParamMetaData.setDefaultValue(previousParameterMetaData.getDefaultValue());
                        overloadParameters[j] = repetitiveParamMetaData;
                    }
                }
                parameterOverload.setParameters(Arrays.asList(overloadParameters));
                parameterOverloads[i] = parameterOverload;
            }
            extensionMetaData.setParameterOverloads(Arrays.asList(parameterOverloads));
        }
        // Adding system parameters
        SystemParameterMetaData[] systemParameters = new SystemParameterMetaData[extensionAnnotation.systemParameter().length];
        for (int i = 0; i < extensionAnnotation.systemParameter().length; i++) {
            SystemParameter systemParameterAnnotation = extensionAnnotation.systemParameter()[i];
            SystemParameterMetaData systemParameter = new SystemParameterMetaData();
            systemParameter.setName(systemParameterAnnotation.name());
            systemParameter.setDescription(systemParameterAnnotation.description());
            systemParameter.setDefaultValue(systemParameterAnnotation.defaultValue());
            systemParameter.setPossibleParameters(Arrays.asList(systemParameterAnnotation.possibleParameters()));
            systemParameters[i] = systemParameter;
        }
        extensionMetaData.setSystemParameters(Arrays.asList(systemParameters));
        // Adding return attributes
        ReturnAttributeMetaData[] returnAttributes = new ReturnAttributeMetaData[extensionAnnotation.returnAttributes().length];
        for (int i = 0; i < extensionAnnotation.returnAttributes().length; i++) {
            ReturnAttribute parameterAnnotation = extensionAnnotation.returnAttributes()[i];
            ReturnAttributeMetaData returnAttribute = new ReturnAttributeMetaData();
            returnAttribute.setName(parameterAnnotation.name());
            returnAttribute.setType(Arrays.asList(parameterAnnotation.type()));
            returnAttribute.setDescription(parameterAnnotation.description());
            returnAttributes[i] = returnAttribute;
        }
        extensionMetaData.setReturnAttributes(Arrays.asList(returnAttributes));
        // Adding examples
        ExampleMetaData[] examples = new ExampleMetaData[extensionAnnotation.examples().length];
        for (int i = 0; i < extensionAnnotation.examples().length; i++) {
            Example exampleAnnotation = extensionAnnotation.examples()[i];
            ExampleMetaData exampleMetaData = new ExampleMetaData();
            exampleMetaData.setSyntax(exampleAnnotation.syntax());
            exampleMetaData.setDescription(exampleAnnotation.description());
            examples[i] = exampleMetaData;
        }
        extensionMetaData.setExamples(Arrays.asList(examples));
        // Finding the namespace
        String namespaceName = extensionAnnotation.namespace();
        if (Objects.equals(namespaceName, "")) {
            namespaceName = Constants.CORE_NAMESPACE;
        }
        // Finding the relevant namespace in the namespace list
        NamespaceMetaData namespace = null;
        for (NamespaceMetaData existingNamespace : namespaceList) {
            if (Objects.equals(existingNamespace.getName(), namespaceName)) {
                namespace = existingNamespace;
                break;
            }
        }
        // Creating namespace if it doesn't exist
        if (namespace == null) {
            namespace = new NamespaceMetaData();
            namespace.setName(namespaceName);
            namespace.setExtensionMap(new TreeMap<>());
            namespaceList.add(namespace);
        }
        // Adding to the relevant extension metadata list in the namespace
        List<ExtensionMetaData> extensionMetaDataList = namespace.getExtensionMap().computeIfAbsent(extensionType, k -> new ArrayList<>());
        extensionMetaDataList.add(extensionMetaData);
    }
}