Example usage for java.lang Class getComponentType

Introduction

In this page you can find the example usage for java.lang Class getComponentType.

Prototype

public Class<?> getComponentType() 

Source Link

Document

Returns the Class representing the component type of an array.

Usage

From source file:com.laxser.blitz.lama.core.RowMapperFactoryImpl.java

private static Class<?> getRowType(Modifier modifier) {
    Class<?> returnClassType = modifier.getReturnType();
    if (Collection.class.isAssignableFrom(returnClassType)) {
        return getRowTypeFromCollectionType(modifier, returnClassType);
    } else if (Map.class == returnClassType) {
        return getRowTypeFromMapType(modifier, returnClassType);
    } else if (returnClassType.isArray() && returnClassType != byte[].class) {
        // , ??/*from  www . j  ava  2s . c o m*/
        return returnClassType.getComponentType();
    }

    // DAO?
    return returnClassType;
}

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From source file:disko.DU.java

@SuppressWarnings("unchecked")
public static <T> T cloneObject(T p, Mapping<Pair<Object, String>, Boolean> propertyFilter) throws Exception {
    if (p == null)
        return null;

    if (p instanceof Cloneable) {
        Method cloneMethod = p.getClass().getMethod("clone", (Class[]) null);
        if (cloneMethod != null)
            return (T) cloneMethod.invoke(p, (Object[]) null);

    } else if (p.getClass().isArray()) {
        Object[] A = (Object[]) p;
        Class<?> type = p.getClass();
        Object[] ac = (Object[]) Array.newInstance(type.getComponentType(), A.length);
        for (int i = 0; i < A.length; i++)
            ac[i] = cloneObject(A[i], propertyFilter);
        return (T) ac;
    } else if (identityCloneClasses.contains(p.getClass()))
        return p;

    ////from   w w  w .j  ava2  s . c o  m
    // Need to implement cloning ourselves. We do this by copying bean properties.
    //
    Constructor<?> cons = null;

    try {
        cons = p.getClass().getConstructor((Class[]) null);
    } catch (Throwable t) {
        return p;
    }

    Object copy = cons.newInstance((Object[]) null);

    if (p instanceof Collection) {
        Collection<Object> cc = (Collection<Object>) copy;
        for (Object el : (Collection<?>) p)
            cc.add(cloneObject(el, propertyFilter));
    } else if (p instanceof Map) {
        Map<Object, Object> cm = (Map<Object, Object>) copy;
        for (Object key : ((Map<Object, Object>) p).keySet())
            cm.put(key, cloneObject(((Map<Object, Object>) p).get(key), propertyFilter));
    } else {
        BeanInfo bean_info = Introspector.getBeanInfo(p.getClass());
        PropertyDescriptor beanprops[] = bean_info.getPropertyDescriptors();
        if (beanprops == null || beanprops.length == 0)
            copy = p;
        else
            for (PropertyDescriptor desc : beanprops) {
                Method rm = desc.getReadMethod();
                Method wm = desc.getWriteMethod();
                if (rm == null || wm == null)
                    continue;
                Object value = rm.invoke(p, (Object[]) null);
                if (propertyFilter == null || propertyFilter.eval(new Pair<Object, String>(p, desc.getName())))
                    value = cloneObject(value, propertyFilter);
                wm.invoke(copy, new Object[] { value });
            }
    }
    return (T) copy;
}

---

From source file:jp.furplag.util.commons.ObjectUtils.java

/**
 * substitute for {@code instanceof}.//from  ww  w.j av  a  2  s .  c  om
 *
 * @param clazz the Object, return false if null.
 * @param classes array of {@link java.lang.Class}.
 * @return if true, {@code o.getClass()} (or Class<?> o) contains given Classes.
 */
public static boolean isAny(final Object o, final Class<?>... classes) {
    if (classes == null)
        return o == null;
    if (classes.length < 1)
        return false;
    Class<?> type = o == null ? null
            : (o instanceof Class) ? ((Class<?>) o)
                    : o.getClass().isArray() ? o.getClass().getComponentType() : o.getClass();
    for (Class<?> clazz : classes) {
        if (o == null && clazz == null)
            return true;
        if (o == null || clazz == null)
            continue;
        if (clazz.equals(type))
            return true;
        if (!(o instanceof Class)
                && ClassUtils.primitiveToWrapper(type).equals(ClassUtils.primitiveToWrapper(clazz)))
            return true;
        if (clazz.isArray() && type.equals(clazz.getComponentType()))
            return true;
    }

    return false;
}

---

From source file:net.paoding.rose.jade.rowmapper.DefaultRowMapperFactory.java

private static Class<?> getRowType(StatementMetaData statementMetaData) {
    Class<?> returnClassType = statementMetaData.getMethod().getReturnType();
    if (Collection.class.isAssignableFrom(returnClassType)) {
        return getRowTypeFromCollectionType(statementMetaData, returnClassType);
    } else if (Map.class == returnClassType) {
        return getRowTypeFromMapType(statementMetaData, returnClassType);
    } else if (returnClassType.isArray() && returnClassType != byte[].class) {
        // , ??//w w  w .  j a  v  a  2s . c o  m
        return returnClassType.getComponentType();
    }

    // DAO?
    return returnClassType;
}

---

From source file:jenkins.model.RunIdMigrator.java

/**
 * Tries to move/rename a file from one path to another.
 * Uses {@link java.nio.file.Files#move} when available.
 * Does not use {@link java.nio.file.StandardCopyOption#REPLACE_EXISTING} or any other options.
 * TODO candidate for moving to {@link Util}
 *///from w w w. j a  v a 2s  .  c  om
static void move(File src, File dest) throws IOException {
    Class<?> pathC;
    try {
        pathC = Class.forName("java.nio.file.Path");
    } catch (ClassNotFoundException x) {
        // Java 6, do our best
        if (dest.exists()) {
            throw new IOException(dest + " already exists");
        }
        if (src.renameTo(dest)) {
            return;
        }
        throw new IOException("could not move " + src + " to " + dest);
    }
    try {
        Method toPath = File.class.getMethod("toPath");
        Class<?> copyOptionAC = Class.forName("[Ljava.nio.file.CopyOption;");
        Class.forName("java.nio.file.Files").getMethod("move", pathC, pathC, copyOptionAC).invoke(null,
                toPath.invoke(src), toPath.invoke(dest), Array.newInstance(copyOptionAC.getComponentType(), 0));
    } catch (InvocationTargetException x) {
        Throwable cause = x.getCause();
        if (cause instanceof IOException) {
            throw (IOException) cause;
        } else {
            throw new IOException(cause);
        }
    } catch (Exception x) {
        throw new IOException(x);
    }
}

---

From source file:org.uimafit.factory.ConfigurationParameterFactory.java

private static String getConfigurationParameterType(Field field) {
    Class<?> parameterClass = field.getType();
    String parameterClassName;//w  ww  .  j  av a  2  s .com
    if (parameterClass.isArray()) {
        parameterClassName = parameterClass.getComponentType().getName();
    } else if (Collection.class.isAssignableFrom(parameterClass)) {
        ParameterizedType collectionType = (ParameterizedType) field.getGenericType();
        parameterClassName = ((Class<?>) (collectionType.getActualTypeArguments()[0])).getName();
    } else {
        parameterClassName = parameterClass.getName();
    }
    String parameterType = javaUimaTypeMap.get(parameterClassName);
    if (parameterType == null) {
        return ConfigurationParameter.TYPE_STRING;
    }
    return parameterType;
}

---

From source file:com.feilong.core.lang.ClassUtilTest.java

/**
 *  class info map for LOGGER./*from   w  w w .j  a v  a2 s . c o m*/
 *
 * @param klass
 *            the klass
 * @return  <code>klass</code> nullempty, {@link Collections#emptyMap()}<br>
 */
public static Map<String, Object> getClassInfoMapForLog(Class<?> klass) {
    if (isNullOrEmpty(klass)) {
        return Collections.emptyMap();
    }

    Map<String, Object> map = new LinkedHashMap<String, Object>();

    map.put("clz.getCanonicalName()", klass.getCanonicalName());//"com.feilong.core.date.DatePattern"
    map.put("clz.getName()", klass.getName());//"com.feilong.core.date.DatePattern"
    map.put("clz.getSimpleName()", klass.getSimpleName());//"DatePattern"

    map.put("clz.getComponentType()", klass.getComponentType());
    // ?"". ,voidboolean?byte?char?short?int?long?float  double?.
    map.put("clz.isPrimitive()", klass.isPrimitive());

    // ?"".,.
    map.put("clz.isLocalClass()", klass.isLocalClass());
    // ?"?".?,?,?"""??".
    map.put("clz.isMemberClass()", klass.isMemberClass());

    //isSynthetic()?Class?"??".java??false,?true.,JVM???,java??"??"?
    map.put("clz.isSynthetic()", klass.isSynthetic());
    map.put("clz.isArray()", klass.isArray());
    map.put("clz.isAnnotation()", klass.isAnnotation());

    //??true.
    map.put("clz.isAnonymousClass()", klass.isAnonymousClass());
    map.put("clz.isEnum()", klass.isEnum());

    return map;
}

---

From source file:org.jfree.chart.demo.SampleXYSymbolicDataset.java

/**
 * Returns a clone of the array./*from  w w  w.ja  v a 2  s.c om*/
 * 
 * @param arr
 *           the array.
 * @return a clone.
 */
private static Object cloneArray(final Object arr) {

    if (arr == null) {
        return arr;
    }

    final Class cls = arr.getClass();
    if (!cls.isArray()) {
        return arr;
    }

    final int length = Array.getLength(arr);
    final Object[] newarr = (Object[]) Array.newInstance(cls.getComponentType(), length);

    Object obj;

    for (int i = 0; i < length; i++) {
        obj = Array.get(arr, i);
        if (obj.getClass().isArray()) {
            newarr[i] = cloneArray(obj);
        } else {
            newarr[i] = obj;
        }
    }

    return newarr;
}

---

From source file:com.mtgi.analytics.aop.BehaviorTrackingAdvice.java

/**
 * marshal the given value to a String.  Only java builtin types,
 * and arrays of those types, are converted; everything else is
 * represented as "[qualified.type.name]" to avoid invoking
 * costly (or buggy) toString() methods.
 *//*w w  w .java  2 s .com*/
private static final void logValue(EventDataElement parent, String elementName, Class<?> expectedType,
        Object arg) {
    EventDataElement element = parent.addElement(elementName);
    if (arg == null)
        return;

    Class<?> type = arg.getClass();
    //log the concrete type of the argument if it differs from the expected type (i.e. is a subclass)
    //the primitive type checks avoid logging redundant type info for autoboxed values
    if (type != expectedType && !(expectedType.isPrimitive() || type.isPrimitive()))
        element.add("type", type.getName());

    //TODO: use annotations or some other configuration for custom
    //parameter logging?
    String value = "{object}";
    if (type.isArray()) {
        if (shouldLog(type.getComponentType()))
            value = toStringArray(arg);
    } else {
        if (shouldLog(type))
            value = arg.toString();
    }
    element.setText(value);
}

---

From source file:org.uimafit.factory.ConfigurationParameterFactory.java

/**
 * A factory method for creating a ConfigurationParameter object.
 *//*w ww  . j  a v  a 2 s .  com*/
public static ConfigurationParameter createPrimitiveParameter(String name, Class<?> parameterClass,
        String parameterDescription, boolean isMandatory) {
    String parameterClassName;
    if (parameterClass.isArray()) {
        parameterClassName = parameterClass.getComponentType().getName();
    } else {
        parameterClassName = parameterClass.getName();
    }

    String parameterType = javaUimaTypeMap.get(parameterClassName);
    if (parameterType == null) {
        // If we cannot map the type, we'll try to convert it to a String
        parameterType = ConfigurationParameter.TYPE_STRING;
    }
    return createPrimitiveParameter(name, parameterType, parameterDescription, parameterClass.isArray(),
            isMandatory);
}

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