Example usage for java.lang.reflect Array getLength

Introduction

In this page you can find the example usage for java.lang.reflect Array getLength.

Prototype

@HotSpotIntrinsicCandidate
public static native int getLength(Object array) throws IllegalArgumentException;

Source Link

Document

Returns the length of the specified array object, as an int .

Usage

From source file:edu.sdsc.scigraph.services.jersey.writers.BbopJsGraphWriter.java

static Collection<String> getCategories(Vertex vertex) {
    Collection<String> categories = new HashSet<>();
    if (vertex.getPropertyKeys().contains(Concept.CATEGORY)) {
        Object value = vertex.getProperty(Concept.CATEGORY);
        if (value.getClass().isArray()) {
            for (int i = 0; i < Array.getLength(value); i++) {
                categories.add((String) Array.get(value, i));
            }/*from  w  w w  .ja va  2s  . c o  m*/
        } else if (value instanceof Iterable) {
            categories.addAll(newArrayList((Iterable<String>) value));
        } else {
            categories.add((String) value);
        }
    }
    return categories;
}

---

From source file:org.atemsource.atem.impl.common.attribute.collection.ArrayAttributeImpl.java

@Override
public int getSize(Object entity) {
    return Array.getLength(getAccessor().getValue(entity));
}

---

From source file:br.msf.commons.util.ArrayUtils.java

/**
 * Indicates whether the given object is a non-empty array.
 *
 * @param array The array to test./*from  w  w w . ja  v  a  2  s . c om*/
 * @return {@code true} if the array is not null and not empty;
 */
public static boolean isNotEmpty(final Object array) {
    return ObjectUtils.isArray(array) && Array.getLength(array) > 0;
}

---

From source file:Main.java

/**
 * Gets the size of the collection/iterator specified.
 * <p>// w w  w . j  a  v a  2  s  .  c om
 * This method can handles objects as follows
 * <ul>
 * <li>Collection - the collection size
 * <li>Map - the map size
 * <li>Array - the array size
 * <li>Iterator - the number of elements remaining in the iterator
 * <li>Enumeration - the number of elements remaining in the enumeration
 * </ul>
 *
 * @param object  the object to get the size of, may be null
 * @return the size of the specified collection or 0 if the object was null
 * @throws IllegalArgumentException thrown if object is not recognised
 * @since 3.1
 */
public static int size(final Object object) {
    if (object == null) {
        return 0;
    }
    int total = 0;
    if (object instanceof Map<?, ?>) {
        total = ((Map<?, ?>) object).size();
    } else if (object instanceof Collection<?>) {
        total = ((Collection<?>) object).size();
    } else if (object instanceof Object[]) {
        total = ((Object[]) object).length;
    } else if (object instanceof Iterator<?>) {
        final Iterator<?> it = (Iterator<?>) object;
        while (it.hasNext()) {
            total++;
            it.next();
        }
    } else if (object instanceof Enumeration<?>) {
        final Enumeration<?> it = (Enumeration<?>) object;
        while (it.hasMoreElements()) {
            total++;
            it.nextElement();
        }
    } else {
        try {
            total = Array.getLength(object);
        } catch (final IllegalArgumentException ex) {
            throw new IllegalArgumentException("Unsupported object type: " + object.getClass().getName());
        }
    }
    return total;
}

---

From source file:edu.sdsc.scigraph.neo4j.GraphUtil.java

static Object getNewPropertyValue(Object originalValue, Object newValue) {
    Class<?> clazz = checkNotNull(newValue).getClass();
    boolean reduceToString = false;
    if (null != originalValue && originalValue.getClass().isArray()) {
        Class<?> originalClazz = Array.get(originalValue, 0).getClass();
        if (!originalClazz.equals(clazz)) {
            reduceToString = true;//w ww  .jav a  2s  . co m
            clazz = String.class;
        }
        newValue = reduceToString ? newValue.toString() : newValue;
        Object newArray = Array.newInstance(clazz, Array.getLength(originalValue) + 1);
        for (int i = 0; i < Array.getLength(originalValue); i++) {
            Object val = Array.get(originalValue, i);
            if (newValue.equals(val)) {
                return originalValue;
            }
            Array.set(newArray, i, reduceToString ? val.toString() : val);
        }
        Array.set(newArray, Array.getLength(originalValue), newValue);
        return newArray;
    } else if (null != originalValue) {
        if (!clazz.equals(originalValue.getClass())) {
            reduceToString = true;
            clazz = String.class;
        }
        originalValue = reduceToString ? originalValue.toString() : originalValue;
        newValue = reduceToString ? newValue.toString() : newValue;
        if (!originalValue.equals(newValue)) {
            Object newArray = Array.newInstance(clazz, 2);
            Array.set(newArray, 0, originalValue);
            Array.set(newArray, 1, newValue);
            return newArray;
        } else {
            return originalValue;
        }
    } else {
        return newValue;
    }
}

---

From source file:Main.java

/**
 * Returns a copy of the given array of size 1 greater than the argument. 
 * The last value of the array is left to the default value.
 * /* w  w w .  j av  a2  s .  c  om*/
 * @param array The array to copy, must not be <code>null</code>.
 * @param newArrayComponentType If <code>array</code> is <code>null</code>, create a 
 * size 1 array of this type.
 * @return A new copy of the array of size 1 greater than the input.
 */
private static Object copyArrayGrow1(Object array, Class newArrayComponentType) {
    if (array != null) {
        int arrayLength = Array.getLength(array);
        Object newArray = Array.newInstance(array.getClass().getComponentType(), arrayLength + 1);
        System.arraycopy(array, 0, newArray, 0, arrayLength);
        return newArray;
    }
    return Array.newInstance(newArrayComponentType, 1);
}

---

From source file:com.scit.sling.test.MockValueMap.java

@SuppressWarnings("unchecked")
private <T> T convertType(Object o, Class<T> type) {
    if (o == null) {
        return null;
    }//  w w w  .  j a  v a  2 s .c om
    if (o.getClass().isArray() && type.isArray()) {
        if (type.getComponentType().isAssignableFrom(o.getClass().getComponentType())) {
            return (T) o;
        } else {
            // we need to convert the elements in the array
            Object array = Array.newInstance(type.getComponentType(), Array.getLength(o));
            for (int i = 0; i < Array.getLength(o); i++) {
                Array.set(array, i, convertType(Array.get(o, i), type.getComponentType()));
            }
            return (T) array;
        }
    }
    if (o.getClass().isAssignableFrom(type)) {
        return (T) o;
    }
    if (String.class.isAssignableFrom(type)) {
        // Format dates
        if (o instanceof Calendar) {
            return (T) formatDate((Calendar) o);
        } else if (o instanceof Date) {
            return (T) formatDate((Date) o);
        } else if (o instanceof DateTime) {
            return (T) formatDate((DateTime) o);
        }
        return (T) String.valueOf(o);
    } else if (o instanceof DateTime) {
        DateTime dt = (DateTime) o;
        if (Calendar.class.isAssignableFrom(type)) {
            return (T) dt.toCalendar(Locale.getDefault());
        } else if (Date.class.isAssignableFrom(type)) {
            return (T) dt.toDate();
        } else if (Number.class.isAssignableFrom(type)) {
            return convertType(dt.getMillis(), type);
        }
    } else if (o instanceof Number && Number.class.isAssignableFrom(type)) {
        if (Byte.class.isAssignableFrom(type)) {
            return (T) (Byte) ((Number) o).byteValue();
        } else if (Double.class.isAssignableFrom(type)) {
            return (T) (Double) ((Number) o).doubleValue();
        } else if (Float.class.isAssignableFrom(type)) {
            return (T) (Float) ((Number) o).floatValue();
        } else if (Integer.class.isAssignableFrom(type)) {
            return (T) (Integer) ((Number) o).intValue();
        } else if (Long.class.isAssignableFrom(type)) {
            return (T) (Long) ((Number) o).longValue();
        } else if (Short.class.isAssignableFrom(type)) {
            return (T) (Short) ((Number) o).shortValue();
        } else if (BigDecimal.class.isAssignableFrom(type)) {
            return (T) new BigDecimal(o.toString());
        }
    } else if (o instanceof Number && type.isPrimitive()) {
        final Number num = (Number) o;
        if (type == byte.class) {
            return (T) new Byte(num.byteValue());
        } else if (type == double.class) {
            return (T) new Double(num.doubleValue());
        } else if (type == float.class) {
            return (T) new Float(num.floatValue());
        } else if (type == int.class) {
            return (T) new Integer(num.intValue());
        } else if (type == long.class) {
            return (T) new Long(num.longValue());
        } else if (type == short.class) {
            return (T) new Short(num.shortValue());
        }
    } else if (o instanceof String && Number.class.isAssignableFrom(type)) {
        if (Byte.class.isAssignableFrom(type)) {
            return (T) new Byte((String) o);
        } else if (Double.class.isAssignableFrom(type)) {
            return (T) new Double((String) o);
        } else if (Float.class.isAssignableFrom(type)) {
            return (T) new Float((String) o);
        } else if (Integer.class.isAssignableFrom(type)) {
            return (T) new Integer((String) o);
        } else if (Long.class.isAssignableFrom(type)) {
            return (T) new Long((String) o);
        } else if (Short.class.isAssignableFrom(type)) {
            return (T) new Short((String) o);
        } else if (BigDecimal.class.isAssignableFrom(type)) {
            return (T) new BigDecimal((String) o);
        }
    }
    throw new NotImplementedException(
            "Can't handle conversion from " + o.getClass().getName() + " to " + type.getName());
}

---

From source file:cloudnet.util.Dumper.java

/**
 *
 * @param o/*from w w w .j a  v a  2 s . c  om*/
 * @param ctx
 * @return
 */
protected static String dump(Object o, DumpContext ctx) {
    if (o == null) {
        return "<null>";
    }

    ctx.callCount++;
    StringBuilder tabs = new StringBuilder();
    for (int k = 0; k < ctx.callCount; k++) {
        tabs.append("\t");
    }
    StringBuilder buffer = new StringBuilder();
    Class oClass = o.getClass();

    String oSimpleName = getSimpleNameWithoutArrayQualifier(oClass);

    if (ctx.ignoreList.get(oSimpleName + ":") != null) {
        return "<Ignored>";
    }

    if (oClass.isArray()) {
        buffer.append("\n");
        buffer.append(tabs.toString().substring(1));
        buffer.append("[\n");
        int rowCount = ctx.maxArrayElements == 0 ? Array.getLength(o)
                : FastMath.min(ctx.maxArrayElements, Array.getLength(o));
        for (int i = 0; i < rowCount; i++) {
            buffer.append(tabs.toString());
            try {
                Object value = Array.get(o, i);
                buffer.append(dumpValue(value, ctx));
            } catch (Exception e) {
                buffer.append(e.getMessage());
            }
            if (i < Array.getLength(o) - 1) {
                buffer.append(",");
            }
            buffer.append("\n");
        }
        if (rowCount < Array.getLength(o)) {
            buffer.append(tabs.toString());
            buffer.append(Array.getLength(o) - rowCount + " more array elements...");
            buffer.append("\n");
        }
        buffer.append(tabs.toString().substring(1));
        buffer.append("]");
    } else {
        buffer.append("\n");
        buffer.append(tabs.toString().substring(1));
        buffer.append("{\n");
        buffer.append(tabs.toString());
        buffer.append("hashCode: " + o.hashCode());
        buffer.append("\n");
        while (oClass != null && oClass != Object.class) {
            Field[] fields = oClass.getDeclaredFields();

            if (ctx.ignoreList.get(oClass.getSimpleName()) == null) {
                if (oClass != o.getClass()) {
                    buffer.append(tabs.toString().substring(1));
                    buffer.append("  Inherited from superclass " + oSimpleName + ":\n");
                }

                for (int i = 0; i < fields.length; i++) {

                    String fSimpleName = getSimpleNameWithoutArrayQualifier(fields[i].getType());
                    String fName = fields[i].getName();

                    fields[i].setAccessible(true);
                    buffer.append(tabs.toString());
                    buffer.append(fName + "(" + fSimpleName + ")");
                    buffer.append("=");

                    if (ctx.ignoreList.get(":" + fName) == null
                            && ctx.ignoreList.get(fSimpleName + ":" + fName) == null
                            && ctx.ignoreList.get(fSimpleName + ":") == null) {

                        try {
                            Object value = fields[i].get(o);
                            buffer.append(dumpValue(value, ctx));
                        } catch (Exception e) {
                            buffer.append(e.getMessage());
                        }
                        buffer.append("\n");
                    } else {
                        buffer.append("<Ignored>");
                        buffer.append("\n");
                    }
                }
                oClass = oClass.getSuperclass();
                oSimpleName = oClass.getSimpleName();
            } else {
                oClass = null;
                oSimpleName = "";
            }
        }
        buffer.append(tabs.toString().substring(1));
        buffer.append("}");
    }
    ctx.callCount--;
    return buffer.toString();
}

---

From source file:org.activiti.rest.builder.management.TableDataObjectBuilder.java

protected void putColumnValue(JSONObject json, String key, Object value) throws JSONException {
    if (value == null) {
        JSONUtil.putRetainNull(json, key, null);
    } else if (value instanceof List<?>) {
        json.put(key, ((List<?>) value).size());
    } else if (value.getClass().isArray()) {
        json.put(key, Array.getLength(value));
    } else if (value instanceof Date) {
        String date = JSONUtil.formatISO8601Date((Date) value);
        JSONUtil.putRetainNull(json, key, date);
    } else {//from w  ww  .  j  a  v  a 2  s .c  om
        // All other types can be handled by JSONObject
        JSONUtil.putRetainNull(json, key, value);
    }
}

---

From source file:org.apache.axis2.jaxws.message.OccurrenceArray.java

/**
 * Get the List or array as a Object[]//ww  w.j  a v a  2s. co  m
 * @return Object[] 
 */
public Object[] getAsArray() {
    Object[] objects = null;
    if (value == null) {
        return new Object[0];
    } else if (value instanceof List) {
        List l = (List) value;
        objects = new Object[l.size()];
        for (int i = 0; i < l.size(); i++) {
            objects[i] = l.get(i);
        }
    } else {
        objects = new Object[Array.getLength(value)];
        for (int i = 0; i < objects.length; i++) {
            objects[i] = Array.get(value, i);
        }
    }
    return objects;
}

---

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