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.evolveum.midpoint.util.ReflectionUtil.java

public static Object invokeMethod(Object object, String methodName, List<?> argList)
        throws NoSuchMethodException, IllegalAccessException, InvocationTargetException {
    Method method = findMethod(object, methodName, argList);
    if (method == null) {
        throw new NoSuchMethodException(
                "No method " + methodName + " for arguments " + debugDumpArgList(argList) + " in " + object);
    }//from  ww w.ja  v  a2  s. c  om
    Object[] args = argList.toArray();
    if (method.isVarArgs()) {
        Class<?> parameterTypeClass = method.getParameterTypes()[0];
        Object[] varArgs = (Object[]) Array.newInstance(parameterTypeClass.getComponentType(), args.length);
        for (int i = 0; i < args.length; i++) {
            varArgs[i] = args[i];
        }
        args = new Object[] { varArgs };
    }
    try {
        return method.invoke(object, args);
    } catch (IllegalArgumentException e) {
        throw new IllegalArgumentException(
                e.getMessage() + " for arguments " + debugDumpArgList(argList) + " in " + object, e);
    }
}

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From source file:Main.java

/**
 * Transform the class-relative resource name into a global name by appending
 * it to the classes package name. If the name is already a global name (the
 * name starts with a "/"), then the name is returned unchanged.
 * /* w  ww  .  ja v  a 2  s  . c o  m*/
 * @param name
 *          the resource name
 * @param c
 *          the class which the resource is relative to
 * @return the tranformed name.
 */
private static String convertName(final String name, Class c) {
    if (name.startsWith("/")) {
        // strip leading slash..
        return name.substring(1);
    }

    // we cant work on arrays, so remove them ...
    while (c.isArray()) {
        c = c.getComponentType();
    }
    // extract the package ...
    final String baseName = c.getName();
    final int index = baseName.lastIndexOf('.');
    if (index == -1) {
        return name;
    }

    final String pkgName = baseName.substring(0, index);
    return pkgName.replace('.', '/') + "/" + name;
}

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From source file:com.vk.sdk.api.model.ParseUtils.java

/**
 * Parses array from given JSONArray./*from w w w .jav  a2  s.co m*/
 * Supports parsing of primitive types and {@link com.vk.sdk.api.model.VKApiModel} instances.
 * @param array JSONArray to parse
 * @param arrayClass type of array field in class.
 * @return object to set to array field in class
 * @throws JSONException if given array have incompatible type with given field.
 */
private static Object parseArrayViaReflection(JSONArray array, Class arrayClass) throws JSONException {
    Object result = Array.newInstance(arrayClass.getComponentType(), array.length());
    Class<?> subType = arrayClass.getComponentType();
    for (int i = 0; i < array.length(); i++) {
        try {
            Object item = array.opt(i);
            if (VKApiModel.class.isAssignableFrom(subType) && item instanceof JSONObject) {
                VKApiModel model = (VKApiModel) subType.newInstance();
                item = model.parse((JSONObject) item);
            }
            Array.set(result, i, item);
        } catch (InstantiationException e) {
            throw new JSONException(e.getMessage());
        } catch (IllegalAccessException e) {
            throw new JSONException(e.getMessage());
        } catch (IllegalArgumentException e) {
            throw new JSONException(e.getMessage());
        }
    }
    return result;
}

---

From source file:org.assertj.assertions.generator.description.converter.ClassToClassDescriptionConverter.java

private static TypeDescription buildArrayTypeDescription(final Class<?> arrayType) {
    final TypeDescription typeDescription = new TypeDescription(new TypeName(arrayType));
    typeDescription.setElementTypeName(new TypeName(arrayType.getComponentType()));
    typeDescription.setArray(true);//from   w  ww . j  av  a 2  s .  c  om
    return typeDescription;
}

---

From source file:FlipPolygon.java

private static <T, U> T[] copyOf(U[] arr, int newSize, Class<? extends T[]> newType) {
    T[] copy = ((Object) newType == (Object) Object[].class) ? (T[]) new Object[newSize]
            : (T[]) Array.newInstance(newType.getComponentType(), newSize);
    System.arraycopy(arr, 0, copy, 0, Math.min(arr.length, newSize));
    return copy;//from  w ww . j  a va 2 s .c om
}

---

From source file:org.gerzog.jstataggr.core.templates.TemplateHelper.java

protected static String getTypeName(final Class<?> type) {
    if (type == null) {
        return null;
    }// w w  w. j a v a  2 s . c  o m

    if (type.isArray()) {
        return getTypeName(type.getComponentType()) + "[]";
    }
    return type.getName();
}

---

From source file:de.pribluda.android.jsonmarshaller.JSONUnmarshaller.java

/**
 * recursively retrieve base array class
 *
 * @param clazz// w w w  .  j  av  a  2s  .  c o m
 * @return
 */
@SuppressWarnings({ "unused", "rawtypes" })
private static Class retrieveArrayBase(Class clazz) {
    if (clazz.isArray())
        return retrieveArrayBase(clazz.getComponentType());
    return clazz;
}

---

From source file:io.fabric8.jolokia.support.JolokiaHelpers.java

public static Object convertJolokiaToJavaType(Class<?> clazz, Object value) throws IOException {
    if (clazz.isArray()) {
        if (value instanceof JSONArray) {
            JSONArray jsonArray = (JSONArray) value;
            Object[] javaArray = (Object[]) Array.newInstance(clazz.getComponentType(), jsonArray.size());
            int idx = 0;
            for (Object element : jsonArray) {
                Array.set(javaArray, idx++, convertJolokiaToJavaType(clazz.getComponentType(), element));
            }/*from  w  w  w .j  ava2s.com*/
            return javaArray;
        } else {
            return null;
        }
    } else if (String.class.equals(clazz)) {
        return (value != null) ? value.toString() : null;
    } else if (clazz.equals(Byte.class) || clazz.equals(byte.class)) {
        Number number = asNumber(value);
        return number != null ? number.byteValue() : null;
    } else if (clazz.equals(Short.class) || clazz.equals(short.class)) {
        Number number = asNumber(value);
        return number != null ? number.shortValue() : null;
    } else if (clazz.equals(Integer.class) || clazz.equals(int.class)) {
        Number number = asNumber(value);
        return number != null ? number.intValue() : null;
    } else if (clazz.equals(Long.class) || clazz.equals(long.class)) {
        Number number = asNumber(value);
        return number != null ? number.longValue() : null;
    } else if (clazz.equals(Float.class) || clazz.equals(float.class)) {
        Number number = asNumber(value);
        return number != null ? number.floatValue() : null;
    } else if (clazz.equals(Double.class) || clazz.equals(double.class)) {
        Number number = asNumber(value);
        return number != null ? number.doubleValue() : null;
    } else if (value instanceof JSONObject) {
        JSONObject jsonObject = (JSONObject) value;
        if (!JSONObject.class.isAssignableFrom(clazz)) {
            String json = jsonObject.toJSONString();
            return getObjectMapper().readerFor(clazz).readValue(json);
        }
    }
    return value;
}

---

From source file:kelly.util.BeanUtils.java

/**
 * Check if the given type represents a "simple" property:
 * a primitive, a String or other CharSequence, a Number, a Date,
 * a URI, a URL, a Locale, a Class, or a corresponding array.
 * <p>Used to determine properties to check for a "simple" dependency-check.
 * @param clazz the type to check/*from  w  w  w .j a va2  s . com*/
 * @return whether the given type represents a "simple" property
 * @see org.springframework.beans.factory.support.RootBeanDefinition#DEPENDENCY_CHECK_SIMPLE
 * @see org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory#checkDependencies
 */
public static boolean isSimpleProperty(Class<?> clazz) {
    Validate.notNull(clazz, "Class must not be null");
    return isSimpleValueType(clazz) || (clazz.isArray() && isSimpleValueType(clazz.getComponentType()));
}

---

From source file:Main.java

/**
 * Copies the specified range of the specified array into a new array.
 * The initial index of the range (<tt>from</tt>) must lie between zero
 * and <tt>original.length</tt>, inclusive.  The value at
 * <tt>original[from]</tt> is placed into the initial element of the copy
 * (unless <tt>from == original.length</tt> or <tt>from == to</tt>).
 * Values from subsequent elements in the original array are placed into
 * subsequent elements in the copy.  The final index of the range
 * (<tt>to</tt>), which must be greater than or equal to <tt>from</tt>,
 * may be greater than <tt>original.length</tt>, in which case
 * <tt>null</tt> is placed in all elements of the copy whose index is
 * greater than or equal to <tt>original.length - from</tt>.  The length
 * of the returned array will be <tt>to - from</tt>.
 * The resulting array is of the class <tt>newType</tt>.
 *
 * @param original the array from which a range is to be copied
 * @param from the initial index of the range to be copied, inclusive
 * @param to the final index of the range to be copied, exclusive.
 *     (This index may lie outside the array.)
 * @param newType the class of the copy to be returned
 * @return a new array containing the specified range from the original array,
 *     truncated or padded with nulls to obtain the required length
 * @throws ArrayIndexOutOfBoundsException if <tt>from &lt; 0</tt>
 *     or <tt>from &gt; original.length()</tt>
 * @throws IllegalArgumentException if <tt>from &gt; to</tt>
 * @throws NullPointerException if <tt>original</tt> is null
 * @throws ArrayStoreException if an element copied from
 *     <tt>original</tt> is not of a runtime type that can be stored in
 *     an array of class <tt>newType</tt>.
 * @since 1.6//from  w  w  w  .  j  a v  a2s  .c o  m
 */
@SuppressWarnings("unchecked")
public static <T, U> T[] copyOfRange(U[] original, int from, int to, Class<? extends T[]> newType) {
    int newLength = to - from;
    if (newLength < 0)
        throw new IllegalArgumentException(from + " > " + to);
    T[] copy = ((Object) newType == (Object) Object[].class) ? (T[]) new Object[newLength]
            : (T[]) Array.newInstance(newType.getComponentType(), newLength);
    System.arraycopy(original, from, copy, 0, Math.min(original.length - from, newLength));
    return copy;
}

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