Example usage for java.util Collections emptySet

Introduction

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

Prototype

@SuppressWarnings("unchecked")
public static final <T> Set<T> emptySet()

Source Link

Document

Returns an empty set (immutable).

Usage

From source file:com.github.jknack.amd4j.DependencyCollector.java

/**
 * Collect all the dependencies for the given module.
 *
 * @param config A configuration options.
 * @param module An AMD module./*from  w  w w.j av  a  2  s. c o  m*/
 * @return A dependency set.
 */
public static Set<String> collect(final Config config, final Module module) {
    // empty module?
    if (module.content.length() == 0) {
        return Collections.emptySet();
    }
    // just parse *.js files
    if (!"js".equals(getExtension(module.uri.getPath()))) {
        return Collections.emptySet();
    }

    return new NodeVisitor() {
        private Set<String> dependencies = new LinkedHashSet<String>();

        /**
         * Collect all the dependencies.
         *
         * @return A dependency set.
         */
        public Set<String> collect() {
            Parser parser = new Parser();
            AstRoot node = parser.parse(module.content.toString(), module.name, 1);
            node.visit(this);
            // check shim configuration
            Shim shim = config.getShim(module.name);
            if (shim != null) {
                // add dependencies
                if (shim.dependencies() != null) {
                    dependencies.addAll(shim.dependencies());
                }
            }
            return dependencies;
        }

        @Override
        public boolean visit(final AstNode node) {
            int type = node.getType();
            switch (type) {
            case Token.CALL:
                return visit((FunctionCall) node);
            default:
                return true;
            }
        }

        /**
         * Find out "define" and "require" function calls.
         *
         * @param node The function call node.
         * @return True, to keep walking.
         */
        public boolean visit(final FunctionCall node) {
            AstNode target = node.getTarget();
            if (target instanceof Name) {
                String name = ((Name) target).getIdentifier();
                if ("define".equals(name)) {
                    visitDependencies(node);
                } else if ("require".equals(name)) {
                    int depth = node.getParent().depth() - 1;
                    if (config.isFindNestedDependencies() || depth == 0) {
                        visitDependencies(node);
                    }
                }
            }
            return true;
        }

        /**
         * Report module's dependencies.
         *
         * @param node The function's call.
         */
        private void visitDependencies(final FunctionCall node) {
            List<AstNode> arguments = node.getArguments();
            for (AstNode arg : arguments) {
                if (arg instanceof ArrayLiteral) {
                    // found!
                    ArrayLiteral array = (ArrayLiteral) arg;
                    List<AstNode> dependencyList = array.getElements();
                    for (AstNode dependencyNode : dependencyList) {
                        String dependency = ((StringLiteral) dependencyNode).getValue();
                        String[] dependencies = StringUtils.split(dependency, "!");
                        if (dependencies.length > 1) {
                            this.dependencies.add(dependencies[0]);
                        }
                        this.dependencies.add(dependency);
                    }
                    break;
                }
            }
        }
    }.collect();
}

From source file:com.pc.dailymile.domain.Routes.java

public Set<Route> getRoutes() {
    if (routes == null) {
        return Collections.emptySet();
    }// w ww . j  av  a  2 s  .  c o  m
    return new TreeSet<Route>(routes);
}

From source file:de.jcup.egradle.codeassist.UserInputProposalFilter.java

/**
 * Filter given proposals by content provider information
 * //from  w w w.  ja v  a2 s.com
 * @param proposals
 * @param contentProvider
 * @return set of proposals, never <code>null</code>
 */
public Set<Proposal> filter(Set<Proposal> proposals, ProposalFactoryContentProvider contentProvider) {
    if (proposals == null || proposals.isEmpty()) {
        return Collections.emptySet();
    }
    /* we got proposals, so filter unusable ones: */
    String entered = contentProvider.getEditorSourceEnteredAtCursorPosition();
    Set<Proposal> result = filterAndSetupProposals(proposals, entered);
    return result;
}

From source file:nu.yona.server.subscriptions.service.migration.EncryptFirstAndLastName.java

@Override
public void upgrade(User user) {
    UserDto originalUser = UserDto.createInstanceWithPrivateData(user, Collections.emptySet());
    user.moveFirstAndLastNameToPrivate();
    buddyService.broadcastUserInfoChangeToBuddies(user, originalUser);
}

From source file:com.example.auth.ClientDetailsImpl.java

@Override
public Set<String> getResourceIds() {
    return Collections.emptySet();
}

From source file:com.clicktravel.infrastructure.messaging.inmemory.DefaultInMemoryMessageForwardingControl.java

@PostConstruct
public void init() {
    if (inMemoryMessageSenders == null) {
        inMemoryMessageSenders = Collections.emptySet();
    }//from  w ww.j a  v a2s. c o m
    if (inMemoryMessagePublishers == null) {
        inMemoryMessagePublishers = Collections.emptySet();
    }
}

From source file:com.googlecode.spring.appengine.cache.memcache.MemcacheCacheManager.java

@Override
protected Collection<? extends Cache> loadCaches() {
    return Collections.emptySet();
}

From source file:de.tudarmstadt.ukp.dkpro.core.io.brat.internal.model.BratAttributeDecl.java

public BratAttributeDecl(String aName, Collection<String> aTargetTypes) {
    name = aName;/* w  w w. j av  a2  s .  c  o  m*/
    targetTypes = aTargetTypes == null ? Collections.emptySet() : new LinkedHashSet<>(aTargetTypes);
}

From source file:com.navercorp.pinpoint.web.service.map.AcceptApplicationLocalCacheV1.java

public Set<AcceptApplication> get(String host) {
    final Set<AcceptApplication> hit = acceptApplicationLocalCacheV1.get(host);
    if (CollectionUtils.isNotEmpty(hit)) {
        logger.debug("acceptApplicationLocalCacheV1 hit");
        return hit;
    }/*from  ww  w  . j  a va 2 s . c  o  m*/

    return Collections.emptySet();
}

From source file:org.cloudfoundry.identity.uaa.security.StubSecurityContextAccessor.java

@Override
public Collection<? extends GrantedAuthority> getAuthorities() {
    return Collections.emptySet();
}