Example usage for org.apache.commons.lang.reflect ConstructorUtils invokeConstructor

Introduction

In this page you can find the example usage for org.apache.commons.lang.reflect ConstructorUtils invokeConstructor.

Prototype

public static Object invokeConstructor(Class cls, Object[] args) throws NoSuchMethodException,
        IllegalAccessException, InvocationTargetException, InstantiationException 

Source Link

Document

Returns new instance of klazz created using the actual arguments args.

Usage

From source file:org.apache.impala.authorization.SentryAuthProvider.java

static ResourceAuthorizationProvider createProvider(AuthorizationConfig config, AuthorizationPolicy policy) {
    try {//  w  w  w .ja  va  2 s  . c om
        ProviderBackend providerBe;
        // Create the appropriate backend provider.
        if (config.isFileBasedPolicy()) {
            providerBe = new SimpleFileProviderBackend(config.getSentryConfig().getConfig(),
                    config.getPolicyFile());
            ProviderBackendContext context = new ProviderBackendContext();
            providerBe.initialize(context);
        } else {
            // Note: The second parameter to the ProviderBackend is a "resourceFile" path
            // which is not used by Impala. We cannot pass 'null' so instead pass an empty
            // string.
            providerBe = new SimpleCacheProviderBackend(config.getSentryConfig().getConfig(), "");
            Preconditions.checkNotNull(policy);
            ProviderBackendContext context = new ProviderBackendContext();
            context.setBindingHandle(policy);
            providerBe.initialize(context);
        }

        CommonPolicyEngine engine = new CommonPolicyEngine(providerBe);

        // Try to create an instance of the specified policy provider class.
        // Re-throw any exceptions that are encountered.
        String policyFile = config.getPolicyFile() == null ? "" : config.getPolicyFile();

        return (ResourceAuthorizationProvider) ConstructorUtils.invokeConstructor(
                Class.forName(config.getPolicyProviderClassName()),
                new Object[] { policyFile, engine, ImpalaPrivilegeModel.INSTANCE });
    } catch (Exception e) {
        // Re-throw as unchecked exception.
        throw new IllegalStateException("Error creating ResourceAuthorizationProvider: ", e);
    }
}

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From source file:org.carewebframework.cal.api.patientlist.AbstractPatientList.java

/**
 * Returns a copy of this list.//from   w w w  . j a va2  s .c  om
 *
 * @see IPatientList#copy()
 */
@Override
public IPatientList copy() {
    try {
        return (IPatientList) ConstructorUtils.invokeConstructor(getClass(), this);
    } catch (Exception e) {
        log.error("Error attempting to copy list.", e);
        return null;
    }
}

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From source file:org.chililog.server.engine.parsers.EntryParserFactory.java

/**
 * Instances the correct entry parser/*from  w ww.j  a  va  2 s .  c om*/
 * 
 * @param repoInfo
 *            Repository meta data
 * @param repoParserInfo
 *            Parser meta data
 * @return Entry parser
 * @throws ChiliLogException
 */
public static EntryParser getParser(RepositoryConfigBO repoInfo, RepositoryParserConfigBO repoParserInfo)
        throws ChiliLogException {
    if (repoParserInfo == null) {
        throw new NullArgumentException("repoParserInfo");
    }

    try {
        String className = repoParserInfo.getClassName();
        if (className.equals(_delimitedEntryParserClassName)) {
            return new DelimitedEntryParser(repoInfo, repoParserInfo);
        } else if (className.equals(_regexEntryParserClassName)) {
            return new RegexEntryParser(repoInfo, repoParserInfo);
        } else if (className.equals(_jsonEntryParserClassName)) {
            return new JsonEntryParser(repoInfo, repoParserInfo);
        }

        // Use reflection to instance it
        Class<?> cls = ClassUtils.getClass(className);
        return (EntryParser) ConstructorUtils.invokeConstructor(cls, new Object[] { repoInfo, repoParserInfo });
    } catch (Exception ex) {
        throw new ChiliLogException(ex, Strings.PARSER_FACTORY_ERROR, repoParserInfo.getName(),
                repoInfo.getName(), ex.getMessage());
    }
}

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From source file:org.chililog.server.workbench.ApiRequestHandler.java

/**
 * <p>//from w  w w.j a v a  2  s.  c o m
 * Instance our API worker class using the name passed in on the URI.
 * </p>
 * <p>
 * If <code>/api/Authentication</code> is passed in, the class
 * <code>com.chililog.server.intefaces.management.workers.AuthenticationWorker</code> will be instanced.
 * </p>
 */
private ApiResult instanceApiWorker() throws Exception {
    // TODO - Invoke in another thread because we are mostly reading and writing to mongodb
    String className = null;
    try {
        String uri = _request.getUri();
        String[] segments = uri.split("/");
        String apiName = segments[2];

        // Get rid of query string
        int qs = apiName.indexOf("?");
        if (qs > 0) {
            apiName = apiName.substring(0, qs);
        }

        // Merge _ to camel case
        apiName = WordUtils.capitalizeFully(apiName, new char[] { '_' });
        apiName = apiName.replace("_", "");

        className = "org.chililog.server.workbench.workers." + apiName + "Worker";
        _logger.debug("Instancing ApiWorker: %s", className);

        Class<?> apiClass = ClassUtils.getClass(className);
        _apiWorker = (Worker) ConstructorUtils.invokeConstructor(apiClass, _request);

        return _apiWorker.validate();
    } catch (ClassNotFoundException ex) {
        return new ApiResult(HttpResponseStatus.NOT_FOUND,
                new ChiliLogException(ex, Strings.API_NOT_FOUND_ERROR, className, _request.getUri()));
    }
}

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From source file:org.openengsb.persistence.connector.jpabackend.ConnectorPropertyJPAEntity.java

public Object toObject() throws PersistenceException {
    try {// w  w w.j a  va2s.c  om
        Class<?> clazz = this.getClass().getClassLoader().loadClass(this.className);
        return ConstructorUtils.invokeConstructor(clazz, this.strValue);
    } catch (ClassNotFoundException e) {
        throw new PersistenceException(e);
    } catch (NoSuchMethodException e) {
        throw new PersistenceException(e);
    } catch (IllegalAccessException e) {
        throw new PersistenceException(e);
    } catch (InvocationTargetException e) {
        throw new PersistenceException(e);
    } catch (InstantiationException e) {
        throw new PersistenceException(e);
    }
}

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From source file:org.sonar.server.es.EsTester.java

/**
 * Get all the indexed documents (no paginated results). Results are converted to BaseDoc objects.
 * Results are not sorted./*from   ww w.  j a  v a  2 s .com*/
 */
public <E extends BaseDoc> List<E> getDocuments(IndexType indexType, final Class<E> docClass) {
    List<SearchHit> hits = getDocuments(indexType);
    return newArrayList(Collections2.transform(hits, new Function<SearchHit, E>() {
        @Override
        public E apply(SearchHit input) {
            try {
                return (E) ConstructorUtils.invokeConstructor(docClass, input.getSource());
            } catch (Exception e) {
                throw Throwables.propagate(e);
            }
        }
    }));
}

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