Example usage for java.util Collections EMPTY_MAP

Introduction

In this page you can find the example usage for java.util Collections EMPTY_MAP.

Prototype

Map EMPTY_MAP

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Document

The empty map (immutable).

Usage

From source file:org.grails.plugins.zkui.metaclass.RedirectDynamicMethod.java

@SuppressWarnings({ "unchecked", "rawtypes" })
@Override/*from   w w w.j av a 2s .  c  o  m*/
public Object invoke(Object target, String methodName, Object[] arguments) {
    if (arguments.length == 0) {
        throw new MissingMethodException(METHOD_SIGNATURE, target.getClass(), arguments);
    }

    Map argMap = arguments[0] instanceof Map ? (Map) arguments[0] : Collections.EMPTY_MAP;
    if (argMap.isEmpty()) {
        throw new MissingMethodException(METHOD_SIGNATURE, target.getClass(), arguments);
    }

    GrailsWebRequest webRequest = (GrailsWebRequest) RequestContextHolder.currentRequestAttributes();

    HttpServletRequest request = webRequest.getCurrentRequest();
    if (request.getAttribute(GRAILS_REDIRECT_ISSUED) != null) {
        throw new CannotRedirectException(
                "Cannot issue a redirect(..) here. A previous call to redirect(..) has already redirected the response.");
    }

    HttpServletResponse response = webRequest.getCurrentResponse();
    if (response.isCommitted()) {
        throw new CannotRedirectException(
                "Cannot issue a redirect(..) here. The response has already been committed either by another redirect or by directly writing to the response.");
    }

    Object uri = argMap.get(ARGUMENT_URI);
    String url = argMap.containsKey(ARGUMENT_URL) ? argMap.get(ARGUMENT_URL).toString() : null;
    String actualUri;
    if (uri != null) {
        GrailsApplicationAttributes attrs = webRequest.getAttributes();
        actualUri = attrs.getApplicationUri(request) + uri.toString();
    } else if (url != null) {
        actualUri = url;
    } else {
        if (argMap.get(ARGUMENT_ACTION) == null || argMap.get(ARGUMENT_CONTROLLER) == null) {
            throw new CannotRedirectException(
                    "redirect required attribute [controller] or attribute [action] is missing");
        }
        String actionName = argMap.get(ARGUMENT_ACTION).toString();
        String controllerName = argMap.get(ARGUMENT_CONTROLLER).toString();
        controllerName = controllerName != null ? controllerName : webRequest.getControllerName();

        Map params = (Map) argMap.get(ARGUMENT_PARAMS);
        if (params == null) {
            params = new HashMap();
        }

        if (LOG.isDebugEnabled()) {
            LOG.debug("Dynamic method [redirect] looking up URL mapping for controller [" + controllerName
                    + "] and action [" + actionName + "] and params [" + params + "] with [" + urlMappingsHolder
                    + "]");
        }

        Object id = argMap.get(ARGUMENT_ID);
        try {
            if (id != null) {
                params.put(ARGUMENT_ID, id);
            }

            UrlCreator urlMapping = urlMappingsHolder.getReverseMapping(controllerName, actionName, params);
            if (urlMapping == null && LOG.isDebugEnabled()) {
                LOG.debug("Dynamic method [redirect] no URL mapping found for params [" + params + "]");
            }

            String frag = argMap.get(ARGUMENT_FRAGMENT) != null ? argMap.get(ARGUMENT_FRAGMENT).toString()
                    : null;
            actualUri = urlMapping.createURL(controllerName, actionName, params, request.getCharacterEncoding(),
                    frag);

            if (LOG.isDebugEnabled()) {
                LOG.debug("Dynamic method [redirect] mapped to URL [" + actualUri + "]");
            }
        } finally {
            if (id != null) {
                params.remove(ARGUMENT_ID);
            }
        }
    }

    return redirectResponse(actualUri, request, response);
}

---

From source file:org.forgerock.openam.examples.SampleConditionType.java

@Override
public ConditionDecision evaluate(String realm, Subject subject, String resource,
        Map<String, Set<String>> environment) throws EntitlementException {

    boolean authorized = true;

    for (Principal principal : subject.getPrincipals()) {

        String userDn = principal.getName();

        int start = userDn.indexOf('=');
        int end = userDn.indexOf(',');
        if (end <= start) {
            throw new EntitlementException(EntitlementException.CONDITION_EVALUTATION_FAILED,
                    "Name is not a valid DN: " + userDn);
        }/*  w  w  w  . j ava2s.  com*/

        String userName = userDn.substring(start + 1, end);

        if (userName.length() < getNameLength()) {
            authorized = false;
        }

    }

    return new ConditionDecision(authorized, Collections.EMPTY_MAP);
}

---

From source file:diva.rest.model.DivaRoot.java

public DivaRoot(URI uri) {
    ResourceSet rs = new ResourceSetImpl();
    Resource res = rs.createResource(uri);
    try {/*from   w  w w.jav a 2 s . c  om*/
        res.load(Collections.EMPTY_MAP);
        this.root = (VariabilityModel) res.getContents().get(0);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

---

From source file:architecture.ee.web.servlet.ViewRendererServlet.java

protected Map resolveModel(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse) {
    Map map = (Map) httpservletrequest.getAttribute(WebApplicatioinConstants.MODEL_ATTRIBUTE);
    if (map != null)
        return map;
    else/*from   w  ww.jav  a  2 s. c o  m*/
        return Collections.EMPTY_MAP;
}

---

From source file:de.betterform.agent.web.flux.FluxFacade.java

public List<XMLEvent> dispatchEventTypeWithContext(String id, String eventType, String sessionKey,
        String contextInfo) throws XFormsException {
    Map params;//  w w  w  .  jav a2  s .  c om
    if (contextInfo != null) {
        params = new HashMap(1);
        params.put("context-info", contextInfo);
    } else {
        params = Collections.EMPTY_MAP;
    }

    return dispatchEventTypeWithContext(id, eventType, sessionKey, params);
}

---

From source file:com.redhat.rhn.frontend.dto.SystemCompareDto.java

private List<Item> compare(List strings) {
    return compare(strings, Collections.EMPTY_MAP);
}

---

From source file:se.uu.it.cs.recsys.constraint.builder.CreditDomainBuilder.java

/**
 *
 * @param idSet the set of course ids/*from w w w  . j  ava 2s  .  c o  m*/
 * @return mapping between course credit and course
 */
public Map<CourseCredit, Set<Integer>> getCreditAndIdSetMappingFor(Set<Integer> idSet) {
    if (idSet == null || idSet.isEmpty()) {
        LOGGER.warn("Does not make sense to put null or empty set, right?");
        return Collections.EMPTY_MAP;
    }

    Map<CourseCredit, Set<Integer>> creditAndIds = new HashMap<>();

    this.courseRepository.findByAutoGenIds(idSet).forEach(course -> {
        checkCourseCreditAndPutToMap(course, creditAndIds);
    });

    return creditAndIds;
}

---

From source file:org.codehaus.groovy.grails.web.metaclass.RedirectDynamicMethod.java

@SuppressWarnings({ "unchecked", "rawtypes" })
@Override/*from  ww  w.ja v a 2s . c om*/
public Object invoke(Object target, String methodName, Object[] arguments) {
    if (arguments.length == 0) {
        throw new MissingMethodException(METHOD_SIGNATURE, target.getClass(), arguments);
    }

    Map argMap = arguments[0] instanceof Map ? (Map) arguments[0] : Collections.EMPTY_MAP;
    if (argMap.isEmpty()) {
        throw new MissingMethodException(METHOD_SIGNATURE, target.getClass(), arguments);
    }

    GrailsWebRequest webRequest = (GrailsWebRequest) RequestContextHolder.currentRequestAttributes();
    LinkGenerator requestLinkGenerator = getLinkGenerator(webRequest);

    HttpServletRequest request = webRequest.getCurrentRequest();
    if (request.getAttribute(GRAILS_REDIRECT_ISSUED) != null) {
        throw new CannotRedirectException(
                "Cannot issue a redirect(..) here. A previous call to redirect(..) has already redirected the response.");
    }

    HttpServletResponse response = webRequest.getCurrentResponse();
    if (response.isCommitted()) {
        throw new CannotRedirectException(
                "Cannot issue a redirect(..) here. The response has already been committed either by another redirect or by directly writing to the response.");
    }

    if (target instanceof GroovyObject) {
        GroovyObject controller = (GroovyObject) target;

        // if there are errors add it to the list of errors
        Errors controllerErrors = (Errors) controller.getProperty(ControllerDynamicMethods.ERRORS_PROPERTY);
        Errors errors = (Errors) argMap.get(ARGUMENT_ERRORS);
        if (controllerErrors != null && errors != null) {
            controllerErrors.addAllErrors(errors);
        } else {
            controller.setProperty(ControllerDynamicMethods.ERRORS_PROPERTY, errors);
        }
        Object action = argMap.get(GrailsControllerClass.ACTION);
        if (action != null) {
            argMap.put(GrailsControllerClass.ACTION, establishActionName(action, controller));
        }
        if (!argMap.containsKey(GrailsControllerClass.NAMESPACE_PROPERTY)) {
            // this could be made more efficient if we had a reference to the GrailsControllerClass object, which
            // has the namespace property accessible without needing reflection
            argMap.put(GrailsControllerClass.NAMESPACE_PROPERTY, GrailsClassUtils
                    .getStaticFieldValue(controller.getClass(), GrailsControllerClass.NAMESPACE_PROPERTY));
        }
    }
    boolean permanent = DefaultGroovyMethods.asBoolean(argMap.get(ARGUMENT_PERMANENT));

    // we generate a relative link with no context path so that the absolute can be calculated by combining the serverBaseURL
    // which includes the contextPath
    argMap.put(LinkGenerator.ATTRIBUTE_CONTEXT_PATH, BLANK);

    return redirectResponse(requestLinkGenerator.getServerBaseURL(), requestLinkGenerator.link(argMap), request,
            response, permanent);
}

---

From source file:com.ctrip.infosec.rule.resource.hystrix.DataProxyQueryCommand.java

@Override
protected Map<String, Object> run() throws Exception {

    DataProxyRequest request = new DataProxyRequest();
    request.setServiceName(serviceName);
    request.setOperationName(operationName);
    request.setParams(params);//from w ww .j ava2 s  .c  o  m

    List<DataProxyRequest> requests = new ArrayList<>();
    requests.add(request);

    DataProxyResponse response = null;
    if (VENUS.equals(apiMode)) {
        DataProxyVenusService dataProxyVenusService = SpringContextHolder.getBean(DataProxyVenusService.class);
        List<DataProxyResponse> responses = dataProxyVenusService.dataproxyQueries(requests);
        if (responses == null || responses.size() < 1) {
            return null;
        }
        response = responses.get(0);
        if (response.getRtnCode() != 0) {
            logger.warn(Contexts.getLogPrefix() + "invoke DataProxy.queryForMap fault. RtnCode="
                    + response.getRtnCode() + ", RtnMessage=" + response.getMessage());
            return null;
        }
    } else {
        String responseTxt = Request.Post(urlPrefix + "/rest/dataproxy/query")
                .body(new StringEntity(JSON.toJSONString(request), ContentType.APPLICATION_JSON)).execute()
                .returnContent().asString();
        response = JSON.parseObject(responseTxt, DataProxyResponse.class);
    }

    if (response != null) {
        if (response.getRtnCode() == 0) {
            return response.getResult();
        } else {
            logger.warn(Contexts.getLogPrefix() + "DataProxy. RtnCode=" + response.getRtnCode()
                    + ", RtnMessage=" + response.getMessage());
        }
    }
    return Collections.EMPTY_MAP;
}

---

From source file:com.haulmont.cuba.core.sys.serialization.KryoSerialization.java

protected Kryo newKryoInstance() {
    Kryo kryo = new Kryo();
    kryo.setInstantiatorStrategy(new CubaInstantiatorStrategy());
    if (onlySerializable) {
        kryo.setDefaultSerializer(CubaFieldSerializer.class);
    }/*  ww  w. j  a  v  a2s.  c  o m*/

    //To work properly must itself be loaded by the application classloader (i.e. by classloader capable of loading
    //all the other application classes). For web application it means placing this class inside webapp folder.
    kryo.setClassLoader(KryoSerialization.class.getClassLoader());

    kryo.register(Arrays.asList("").getClass(), new ArraysAsListSerializer());
    kryo.register(Collections.EMPTY_LIST.getClass(), new CollectionsEmptyListSerializer());
    kryo.register(Collections.EMPTY_MAP.getClass(), new CollectionsEmptyMapSerializer());
    kryo.register(Collections.EMPTY_SET.getClass(), new CollectionsEmptySetSerializer());
    kryo.register(Collections.singletonList("").getClass(), new CollectionsSingletonListSerializer());
    kryo.register(Collections.singleton("").getClass(), new CollectionsSingletonSetSerializer());
    kryo.register(Collections.singletonMap("", "").getClass(), new CollectionsSingletonMapSerializer());
    kryo.register(BitSet.class, new BitSetSerializer());
    kryo.register(GregorianCalendar.class, new GregorianCalendarSerializer());
    kryo.register(InvocationHandler.class, new JdkProxySerializer());
    UnmodifiableCollectionsSerializer.registerSerializers(kryo);
    SynchronizedCollectionsSerializer.registerSerializers(kryo);

    kryo.register(CGLibProxySerializer.CGLibProxyMarker.class, new CGLibProxySerializer());
    ImmutableListSerializer.registerSerializers(kryo);
    ImmutableSetSerializer.registerSerializers(kryo);
    ImmutableMapSerializer.registerSerializers(kryo);
    ImmutableMultimapSerializer.registerSerializers(kryo);
    kryo.register(IndirectList.class, new IndirectContainerSerializer());
    kryo.register(IndirectMap.class, new IndirectContainerSerializer());
    kryo.register(IndirectSet.class, new IndirectContainerSerializer());

    kryo.register(org.eclipse.persistence.indirection.IndirectList.class, new IndirectContainerSerializer());
    kryo.register(org.eclipse.persistence.indirection.IndirectMap.class, new IndirectContainerSerializer());
    kryo.register(org.eclipse.persistence.indirection.IndirectSet.class, new IndirectContainerSerializer());

    //classes with custom serialization methods
    kryo.register(HashMultimap.class, new CubaJavaSerializer());
    kryo.register(ArrayListMultimap.class, new CubaJavaSerializer());
    kryo.register(MetaClassImpl.class, new CubaJavaSerializer());
    kryo.register(MetaPropertyImpl.class, new CubaJavaSerializer());
    kryo.register(UnitOfWorkQueryValueHolder.class, new UnitOfWorkQueryValueHolderSerializer(kryo));

    return kryo;
}

---

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