Example usage for com.google.common.collect Iterables tryFind

List of usage examples for com.google.common.collect Iterables tryFind

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Introduction

In this page you can find the example usage for com.google.common.collect Iterables tryFind.

Prototype

public static <T> Optional<T> tryFind(Iterable<T> iterable, Predicate<? super T> predicate)

Source Link

Document

Returns an Optional containing the first element in iterable that satisfies the given predicate, if such an element exists.

Usage

From source file:org.jclouds.virtualbox.statements.InstallGuestAdditions.java

private List<Statement> getStatements(VmSpec vmSpecification, String vboxVersion) {
    List<Statement> statements = Lists.newArrayList();
    statements.add(call("installModuleAssistantIfNeeded"));
    String mountPoint = "/mnt";
    if (Iterables.tryFind(vmSpecification.getControllers(), new Predicate<StorageController>() {
        @Override/*w w w. j a va  2 s . c  om*/
        public boolean apply(StorageController input) {
            if (!input.getIsoImages().isEmpty()) {
                for (IsoImage iso : input.getIsoImages()) {
                    if (iso.getSourcePath().contains("VBoxGuestAdditions_")) {
                        return true;
                    }
                }
            }
            return false;
        }
    }).isPresent()) {
        statements.add(exec("mount -t iso9660 /dev/cdrom1 " + mountPoint));
    } else {
        String vboxGuestAdditionsIso = "VBoxGuestAdditions_" + vboxVersion + ".iso";
        URI download = URI.create(
                "http://download.virtualbox.org/virtualbox/" + vboxVersion + "/" + vboxGuestAdditionsIso);
        statements.add(call("setupPublicCurl"));
        statements.add(saveHttpResponseTo(download, "{tmp}{fs}", vboxGuestAdditionsIso));//
        statements.add(exec(String.format("mount -o loop {tmp}{fs}%s %s", vboxGuestAdditionsIso, mountPoint)));
    }
    statements.add(exec(String.format("%s%s", mountPoint, "/VBoxLinuxAdditions.run --nox11")));
    return statements;
}

From source file:org.apache.brooklyn.util.core.flags.MethodCoercions.java

/**
 * Tries to find a single-parameter method with a parameter compatible with (can be coerced to) the argument, and
 * invokes it./*from  ww  w .  j a v  a2 s .c  om*/
 *
 * @param instance the object to invoke the method on
 * @param methodName the name of the method to invoke
 * @param argument the argument to the method's parameter.
 * @return the result of the method call, or {@link org.apache.brooklyn.util.guava.Maybe#absent()} if method could not be matched.
 */
public static Maybe<?> tryFindAndInvokeSingleParameterMethod(final Object instance, final String methodName,
        final Object argument) {
    Class<?> clazz = instance.getClass();
    Iterable<Method> methods = Arrays.asList(clazz.getMethods());
    Optional<Method> matchingMethod = Iterables.tryFind(methods,
            matchSingleParameterMethod(methodName, argument));
    if (matchingMethod.isPresent()) {
        Method method = matchingMethod.get();
        try {
            Type paramType = method.getGenericParameterTypes()[0];
            Object coercedArgument = TypeCoercions.coerce(argument, TypeToken.of(paramType));
            return Maybe.of(method.invoke(instance, coercedArgument));
        } catch (IllegalAccessException | InvocationTargetException e) {
            throw Exceptions.propagate(e);
        }
    } else {
        return Maybe.absent();
    }
}

From source file:org.ow2.play.governance.platform.user.service.PermissionCheck.java

@Override
public boolean checkGroup(String user, final String group) {
    User u = null;//w  w w . ja  va  2s.c om
    try {
        u = userService.getUser(user);
    } catch (UserException e) {
        // logger
        e.printStackTrace();
    }

    return u != null && u.groups != null && Iterables.tryFind(u.groups, new Predicate<Resource>() {
        public boolean apply(Resource input) {
            return input.uri != null && input.name != null && group.equals(input.uri + "#" + input.name);
        }
    }).isPresent();
}

From source file:org.apache.drill.exec.util.Utilities.java

/**
 * Return true if list of schema path has star column.
 * @param projected/* ww w .  j  a va 2 s.co m*/
 * @return
 */
public static boolean isStarQuery(Collection<SchemaPath> projected) {
    return Iterables
            .tryFind(Preconditions.checkNotNull(projected, COL_NULL_ERROR), new Predicate<SchemaPath>() {
                @Override
                public boolean apply(SchemaPath path) {
                    return Preconditions.checkNotNull(path).equals(SchemaPath.STAR_COLUMN);
                }
            }).isPresent();
}

From source file:org.ow2.petals.cloud.manager.core.actions.PuppetRunAction.java

/**
 * Get the puppet script content. ie generate it from node and context properties.
 * First look at the node, then if not found, search at the context level.
 *
 * @param node/*from   ww w  .  j  a v a2  s.c o m*/
 * @param context
 * @return
 * @throws CloudManagerException
 */
@Override
protected String getScriptContent(Node node, Context context) throws CloudManagerException {
    // get the script from the node properties
    Property script = Iterables.tryFind(node.getProperties(), new Predicate<Property>() {
        public boolean apply(org.ow2.petals.cloud.manager.api.deployment.Property input) {
            return input.getName() != null && input.getName().equalsIgnoreCase(Constants.PUPPET_SCRIPT);
        }
        // search at the descriptor level if not found in node...
    }).or(Iterables.tryFind(context.getDescriptor().getProperties(), new Predicate<Property>() {
        public boolean apply(org.ow2.petals.cloud.manager.api.deployment.Property input) {
            return input.getName() != null && input.getName().equalsIgnoreCase(Constants.PUPPET_SCRIPT);
        }
    })).orNull();

    if (script == null) {
        throw new CloudManagerException("Can not find puppet script content");
    }

    // get the script content or generate it...
    // First search for the type of script, ie generate, provided as content, in the classpath, as URL, ...

    checkNotNull(script.getType());
    // script type property can have several values which will define where to get the script template :

    // TODO : Later. For now, let's assume that the property value is the pattern name to retrieve from the classpath...
    // TODO : We can also get them from a pattern registry...
    String name = script.getValue();
    String path = "/org/ow2/petals/cloud/manager/puppet/" + name + ".template";

    return null;
}

From source file:org.zanata.webtrans.server.rpc.UpdateTransUnitHandler.java

@Override
public UpdateTransUnitResult execute(UpdateTransUnit action, ExecutionContext context) throws ActionException {

    Optional<TransUnitUpdateRequest> hasReviewUpdate = Iterables.tryFind(action.getUpdateRequests(),
            new Predicate<TransUnitUpdateRequest>() {
                @Override/*from  w  w w .  j a  v  a2  s  .c om*/
                public boolean apply(TransUnitUpdateRequest input) {
                    return input.getNewContentState().isReviewed();
                }
            });
    if (hasReviewUpdate.isPresent()) {
        securityServiceImpl.checkWorkspaceAction(action.getWorkspaceId(),
                SecurityService.TranslationAction.REVIEW);
    } else {
        securityServiceImpl.checkWorkspaceAction(action.getWorkspaceId(),
                SecurityService.TranslationAction.MODIFY);
    }

    return doTranslation(action.getWorkspaceId().getLocaleId(), action.getUpdateRequests(),
            action.getEditorClientId(), action.getUpdateType());
}

From source file:brooklyn.entity.nosql.mongodb.sharding.MongoDBRouterClusterImpl.java

protected void setAnyRouter() {
    setAttribute(MongoDBRouterCluster.ANY_ROUTER, Iterables
            .tryFind(getRouters(), EntityPredicates.attributeEqualTo(Startable.SERVICE_UP, true)).orNull());

    setAttribute(MongoDBRouterCluster.ANY_RUNNING_ROUTER, Iterables
            .tryFind(getRouters(), EntityPredicates.attributeEqualTo(MongoDBRouter.RUNNING, true)).orNull());
}

From source file:com.payu.ratel.client.RemoteAutowireCandidateResolver.java

private static Optional<Annotation> getAnnotationWithType(DependencyDescriptor descriptor, final Class clazz) {
    return Iterables.tryFind(Arrays.asList(descriptor.getAnnotations()), new Predicate<Annotation>() {
        @Override// w w  w  .j a  va  2s .  c om
        public boolean apply(Annotation input) {
            return clazz.getName().equals(input.annotationType().getName());
        }
    });
}

From source file:org.apache.provisionr.commands.DestroyPoolCommand.java

@Override
protected Object doExecute() {
    checkNotNull(businessKey, "pool business key is mandatory");

    ProcessInstance instance = processEngine.getRuntimeService().createProcessInstanceQuery()
            .processInstanceBusinessKey(businessKey).singleResult();
    checkNotNull(instance, "no pool found with key " + businessKey);

    String providerId = (String) processEngine.getRuntimeService().getVariable(instance.getId(),
            CoreProcessVariables.PROVIDER);
    checkNotNull(providerId, "the process instance has no provider ID");

    Optional<Provisionr> service = Iterables.tryFind(services, ProvisionrPredicates.withId(providerId));

    if (service.isPresent()) {
        service.get().destroyPool(businessKey);
    } else {//from ww  w.j  av  a2 s  .  c o m
        throw new NoSuchElementException("No provisioning service found with id: " + providerId);
    }

    return null;
}

From source file:org.eclipse.osee.orcs.rest.internal.AttributeResource.java

@GET
@Produces(MediaType.TEXT_PLAIN)/*from  ww  w  .  j a  v a2 s  . com*/
public String getAsText() throws OseeCoreException {
    IOseeBranch branch = TokenFactory.createBranch(branchUuid, "");
    QueryFactory factory = OrcsApplication.getOrcsApi().getQueryFactory(null);
    QueryBuilder queryBuilder = factory.fromBranch(branch).andGuid(artifactUuid);
    if (transactionId > 0) {
        queryBuilder.fromTransaction(transactionId);
    }
    ArtifactReadable exactlyOne = queryBuilder.getResults().getExactlyOne();

    Optional<? extends AttributeReadable<Object>> item = Iterables.tryFind(exactlyOne.getAttributes(),
            new Predicate<AttributeReadable<Object>>() {
                @Override
                public boolean apply(AttributeReadable<Object> attribute) {
                    return attribute.getLocalId() == attrId;
                }
            });

    String toReturn = "";
    if (item.isPresent()) {
        Object value = item.get().getValue();
        if (value != null) {
            toReturn = value.toString();
        }
    }
    return toReturn;
}