Example usage for java.lang Void TYPE

Introduction

In this page you can find the example usage for java.lang Void TYPE.

Prototype

Class TYPE

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Document

The Class object representing the pseudo-type corresponding to the keyword void .

Usage

From source file:com.github.gekoh.yagen.util.MappingUtils.java

public static Class determineTargetEntity(AccessibleObject ao, Class<?> specifiedTargetEntity) {
    String errorMessage = "targetEntity not present and not determinable (need generic declaration)";
    try {// w w  w  .ja  v a2  s  .c om
        if (specifiedTargetEntity != null && specifiedTargetEntity != Void.TYPE) {
            return specifiedTargetEntity;
        } else {
            if (ao instanceof Field) {
                Field f = (Field) ao;
                if (Collection.class.isAssignableFrom(f.getType())) {
                    // this has to work, because otherwise the target entity must be valid
                    ParameterizedType type = (ParameterizedType) f.getGenericType();
                    return (Class<?>) type.getActualTypeArguments()[0];
                }
                return f.getType();
            } else if (ao instanceof Method) {
                Method m = (Method) ao;
                if (Collection.class.isAssignableFrom(m.getReturnType())) {
                    // this has to work, because otherwise the target entity must be valid
                    ParameterizedType type = (ParameterizedType) m.getGenericReturnType();
                    return (Class<?>) type.getActualTypeArguments()[0];
                }
                return m.getReturnType();
            }
        }
    } catch (Exception e) {
        throw new IllegalStateException(errorMessage, e);
    }
    throw new IllegalStateException(errorMessage);
}

From source file:org.apache.hadoop.io.retry.RetryInvocationHandler.java

public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
    RetryPolicy policy = methodNameToPolicyMap.get(method.getName());
    if (policy == null) {
        policy = defaultPolicy;/* w ww .j  av  a 2  s  .co  m*/
    }

    int retries = 0;
    while (true) {
        try {
            return invokeMethod(method, args);
        } catch (Exception e) {
            if (!policy.shouldRetry(e, retries++)) {
                LOG.info("Exception while invoking " + method.getName() + " of " + implementation.getClass()
                        + ". Not retrying." + StringUtils.stringifyException(e));
                if (!method.getReturnType().equals(Void.TYPE)) {
                    throw e; // non-void methods can't fail without an exception
                }
                return null;
            }
            LOG.debug("Exception while invoking " + method.getName() + " of " + implementation.getClass()
                    + ". Retrying." + StringUtils.stringifyException(e));
        }
    }
}

From source file:org.grouplens.lenskit.eval.traintest.OutputPredictMetric.java

public OutputPredictMetric(ExperimentOutputLayout layout, File file, List<Pair<Symbol, String>> chans)
        throws IOException {
    super(Void.TYPE, Void.TYPE);
    outputLayout = layout;//from  w w w .  j a  v a  2s  . c o m
    channels = chans;

    TableLayoutBuilder lb = TableLayoutBuilder.copy(layout.getCommonLayout()).addColumn("User")
            .addColumn("Item").addColumn("Rating").addColumn("Prediction");
    for (Pair<Symbol, String> chan : channels) {
        lb.addColumn(chan.getRight());
    }

    tableWriter = CSVWriter.open(file, lb.build());
}

From source file:org.gradle.api.internal.tasks.options.FieldOptionElement.java

public void apply(Object object, List<String> parameterValues) {
    if (getOptionType() == Void.TYPE && parameterValues.size() == 0) {
        setFieldValue(object, true);/*w  w  w  .j a va 2s . co  m*/
    } else if (parameterValues.size() > 1) {
        throw new IllegalArgumentException(String.format("Lists not supported for option"));
    } else {
        Object arg = getNotationParser().parseNotation(parameterValues.get(0));
        setFieldValue(object, arg);
    }
}

From source file:org.pentaho.di.ui.core.dialog.DisplayInvocationHandler.java

@Override
public Object invoke(Object proxy, final Method method, final Object[] args) throws Throwable {
    if (display.getThread() == Thread.currentThread()) {
        try {/*from w  w  w  .j  ava 2  s .  com*/
            return method.invoke(delegate, args);
        } catch (InvocationTargetException e) {
            throw e.getCause();
        }
    }
    if (asyncForVoid && method.getReturnType().equals(Void.TYPE)) {
        display.asyncExec(new Runnable() {

            @Override
            public void run() {
                try {
                    method.invoke(delegate, args);
                } catch (Throwable e) {
                    if (e instanceof InvocationTargetException) {
                        e = e.getCause();
                    }
                    log.logError(e.getMessage(), e);
                }
            }
        });
        return null;
    }
    final ResultHolder resultHolder = new ResultHolder();
    display.syncExec(new Runnable() {

        @Override
        public void run() {
            try {
                resultHolder.result = method.invoke(delegate, args);
            } catch (InvocationTargetException e) {
                resultHolder.throwable = e.getCause();
            } catch (Exception e) {
                resultHolder.throwable = e;
            }
        }
    });
    if (resultHolder.result != null) {
        return resultHolder.result;
    } else {
        throw resultHolder.throwable;
    }
}

From source file:com.javaforge.tapestry.acegi.enhance.SecuredMethodEnhancementWorker.java

@SuppressWarnings("unused")
public void performEnhancement(EnhancementOperation op, IComponentSpecification spec, Method method,
        Location location) {//from  www .  j  av  a2 s  .co m
    getLog().debug("Securing method " + method + "...");
    final String securityUtilsField = op.addInjectedField("_$securityUtils", SecurityUtils.class,
            securityUtils);
    final Collection<ConfigAttribute> configAttributeDefinition = securityUtils
            .createConfigAttributeDefinition(method);
    final String configAttributeDefinitionField = op.addInjectedField("_$configAttributeDefinition",
            Collection.class, configAttributeDefinition);
    final StringBuffer methodBody = new StringBuffer("{\n");
    methodBody.append(securityUtilsField + ".checkSecurity(this," + configAttributeDefinitionField + ");\n");
    if (!method.getReturnType().equals(Void.TYPE)) {
        methodBody.append("return ");
    }
    methodBody.append("super." + method.getName() + "($$);\n}");
    op.addMethod(method.getModifiers(), new MethodSignature(method), methodBody.toString(), location);
}

From source file:org.nuxeo.ecm.automation.core.impl.InvokableMethod.java

public InvokableMethod(OperationType op, Method method, OperationMethod anno) {
    produce = method.getReturnType();//from www .ja v a2  s .  co m
    Class<?>[] p = method.getParameterTypes();
    if (p.length > 1) {
        throw new IllegalArgumentException("Operation method must accept at most one argument: " + method);
    }
    // if produce is Void => a control operation
    // if (produce == Void.TYPE) {
    // throw new IllegalArgumentException("Operation method must return a
    // value: "+method);
    // }
    this.op = op;
    this.method = method;
    priority = anno.priority();
    if (priority > 0) {
        priority += USER_PRIORITY;
    }
    consume = p.length == 0 ? Void.TYPE : p[0];
}

From source file:org.apache.camel.component.exec.ExecResultConverter.java

/**
 * Converts <code>ExecResult</code> to the type <code>T</code>.
 * /*from   w  w  w .j  ava 2s  . co m*/
 * @param <T> The type to convert to
 * @param type Class instance of the type to which to convert
 * @param exchange a Camel exchange. If exchange is <code>null</code>, no
 *            conversion will be made
 * @param result the exec result
 * @return the converted {@link ExecResult}
 * @throws FileNotFoundException if there is a file in the execResult, and
 *             the file can not be found
 */
@SuppressWarnings("unchecked")
private static <T> T convertTo(Class<T> type, Exchange exchange, ExecResult result)
        throws FileNotFoundException {
    InputStream is = toInputStream(result);
    if (is != null) {
        return exchange.getContext().getTypeConverter().convertTo(type, exchange, is);
    } else {
        // use Void to indicate we cannot convert it
        // (prevents Camel from using a fallback converter which may convert a String from the instance name)  
        return (T) Void.TYPE;
    }
}

From source file:com.jredrain.dao.BeanResultTransFormer.java

/**
 * Setter//from   w w w .  j a  va 2s. c o  m
 *
 * @param method
 * @return
 */
boolean filter(Method method) {
    if (method.getReturnType() == Void.TYPE && method.getParameterTypes().length == 1) {
        String methodName = method.getName();
        return methodName.startsWith("set") && methodName.length() > 3;
    }
    return false;
}

From source file:org.seasar.mayaa.impl.util.ObjectUtil.java

protected static Class loadPrimitiveClass(String className) {
    if (StringUtil.isEmpty(className)) {
        throw new IllegalArgumentException();
    }/* www.  j a va  2  s.c  om*/
    if ("short".equals(className)) {
        return Short.TYPE;
    } else if ("int".equals(className)) {
        return Integer.TYPE;
    } else if ("long".equals(className)) {
        return Long.TYPE;
    } else if ("float".equals(className)) {
        return Float.TYPE;
    } else if ("double".equals(className)) {
        return Double.TYPE;
    } else if ("byte".equals(className)) {
        return Byte.TYPE;
    } else if ("char".equals(className)) {
        return Character.TYPE;
    } else if ("boolean".equals(className)) {
        return Boolean.TYPE;
    } else if ("void".equals(className)) {
        return Void.TYPE;
    }
    return null;
}