Example usage for java.lang.reflect Array get

Introduction

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

Prototype

public static native Object get(Object array, int index)
        throws IllegalArgumentException, ArrayIndexOutOfBoundsException;

Source Link

Document

Returns the value of the indexed component in the specified array object.

Usage

From source file:com.darkstar.beanCartography.utils.finder.Finder.java

/**
 * Process the bean context stack.//from  w ww  . ja  va  2  s.  c o  m
 *
 * @param stack stack of objects left to search
 * @param visited set of objects already searched
 */
protected void visit(Deque<BeanContext> stack, Set<BeanContext> visited) {
    BeanContext target = stack.pop();
    if (target == null)
        return;

    if (visited.contains(target))
        return;
    visited.add(target);

    // process this object and check the filters.  if passed filter then run interceptors...
    filtersInterceptors.entrySet().stream().filter(entry -> entry.getKey().accept(target.getSource()))
            .forEach(entry -> entry.getValue().intercept(target.getSource()));

    // process this object's contained objects (i.e. see what we need to add to the stack)...
    if (NameUtils.isImmutable(target.getSource().getClass()))
        return;
    Object fieldValue = null;
    try {
        while (target.hasNextFieldValue()) {
            fieldValue = target.nextFieldValue();

            // skip nulls...
            if (fieldValue == null)
                continue;

            // add pojo or container or whatever this is...
            if (!visited.contains(fieldValue) && !stack.contains(fieldValue))
                stack.add(new BeanContext(fieldValue));

            // arrays...
            if (fieldValue.getClass().isArray()) {
                if (!processArrays)
                    continue;
                final Object arrayFieldValue = fieldValue;
                IntStream.range(0, Array.getLength(arrayFieldValue)).forEach(i -> {
                    Object element = Array.get(arrayFieldValue, i);
                    if (element != null && !visited.contains(element) && !stack.contains(element))
                        stack.add(new BeanContext(element));
                });

                // collections...
            } else if (fieldValue instanceof Collection<?>) {
                if (!processCollections)
                    continue;
                ((Collection<?>) fieldValue).stream().filter(
                        element -> element != null && !visited.contains(element) && !stack.contains(element))
                        .forEach(element -> stack.add(new BeanContext(element)));

                // maps...
            } else if (fieldValue instanceof Map<?, ?>) {
                if (!processMaps)
                    continue;
                ((Map<?, ?>) fieldValue).entrySet().stream().forEach(entry -> {
                    if (entry.getKey() != null && !visited.contains(entry.getKey())
                            && !stack.contains(entry.getKey()))
                        stack.add(new BeanContext(entry.getKey()));
                    if (entry.getValue() != null && !visited.contains(entry.getValue())
                            && !stack.contains(entry.getValue()))
                        stack.add(new BeanContext(entry.getValue()));
                });
            }
        }

    } catch (Exception e) {
        e.printStackTrace();
    }
}

---

From source file:org.compass.gps.device.jdbc.AbstractJdbcGpsDevice.java

/**
 * Called for each row in the <code>ResultSet</code> which maps to an
 * {@link org.compass.gps.device.jdbc.AbstractJdbcGpsDevice.IndexExecution}. Can be override by derived classes, if not
 * override, than calls//from ww  w . ja  va 2  s. com
 * {@link #processRowValue(Object, java.sql.ResultSet, org.compass.core.CompassSession)} and uses it's
 * return value to save it in the <code>CompassSession</code>. The return
 * value can be an OSEM enables object, a <code>Resource</code>, or an
 * array of one of them.
 */
protected void processRow(Object description, ResultSet rs, CompassSession session)
        throws SQLException, CompassException {
    if (!isRunning()) {
        return;
    }
    Object value = processRowValue(description, rs, session);
    if (value != null) {
        if (value instanceof Object[]) {
            int length = Array.getLength(value);
            for (int i = 0; i < length; i++) {
                Object value1 = Array.get(value, i);
                session.create(value1);
            }
        } else {
            session.create(value);
        }
    }
}

---

From source file:Main.java

/**
 * Returns the <code>index</code>-th value in <code>object</code>, throwing
 * <code>IndexOutOfBoundsException</code> if there is no such element or
 * <code>IllegalArgumentException</code> if <code>object</code> is not an
 * instance of one of the supported types.
 * <p>/*from ww w  .  ja  v  a2  s.  c  om*/
 * The supported types, and associated semantics are:
 * <ul>
 * <li>Map -- the value returned is the <code>Map.Entry</code> in position
 * <code>index</code> in the map's <code>entrySet</code> iterator, if there
 * is such an entry.</li>
 * <li>List -- this method is equivalent to the list's get method.</li>
 * <li>Array -- the <code>index</code>-th array entry is returned, if there
 * is such an entry; otherwise an <code>IndexOutOfBoundsException</code> is
 * thrown.</li>
 * <li>Collection -- the value returned is the <code>index</code>-th object
 * returned by the collection's default iterator, if there is such an
 * element.</li>
 * <li>Iterator or Enumeration -- the value returned is the
 * <code>index</code>-th object in the Iterator/Enumeration, if there is
 * such an element. The Iterator/Enumeration is advanced to
 * <code>index</code> (or to the end, if <code>index</code> exceeds the
 * number of entries) as a side effect of this method.</li>
 * </ul>
 * 
 * @param object
 *            the object to get a value from
 * @param index
 *            the index to get
 * @return the object at the specified index
 * @throws IndexOutOfBoundsException
 *             if the index is invalid
 * @throws IllegalArgumentException
 *             if the object type is invalid
 */
public static Object get(Object object, int index) {
    if (index < 0) {
        throw new IndexOutOfBoundsException("Index cannot be negative: " + index);
    }
    if (object instanceof Map) {
        Map<?, ?> map = (Map<?, ?>) object;
        Iterator<?> iterator = map.entrySet().iterator();
        return get(iterator, index);
    } else if (object instanceof List) {
        return ((List<?>) object).get(index);
    } else if (object instanceof Object[]) {
        return ((Object[]) object)[index];
    } else if (object instanceof Iterator) {
        Iterator<?> it = (Iterator<?>) object;
        while (it.hasNext()) {
            index--;
            if (index == -1) {
                return it.next();
            } else {
                it.next();
            }
        }
        throw new IndexOutOfBoundsException("Entry does not exist: " + index);
    } else if (object instanceof Collection) {
        Iterator<?> iterator = ((Collection<?>) object).iterator();
        return get(iterator, index);
    } else if (object instanceof Enumeration) {
        Enumeration<?> it = (Enumeration<?>) object;
        while (it.hasMoreElements()) {
            index--;
            if (index == -1) {
                return it.nextElement();
            } else {
                it.nextElement();
            }
        }
        throw new IndexOutOfBoundsException("Entry does not exist: " + index);
    } else if (object == null) {
        throw new IllegalArgumentException("Unsupported object type: null");
    } else {
        try {
            return Array.get(object, index);
        } catch (IllegalArgumentException ex) {
            throw new IllegalArgumentException("Unsupported object type: " + object.getClass().getName());
        }
    }
}

---

From source file:org.ebayopensource.common.util.DataUtil.java

public static String[] getStringArray(Object object, String[] defValue) {
    if (object == null) {
        return defValue;
    }/*from www. j a  v  a2 s . com*/

    String[] result;
    if (object instanceof String[]) {
        result = (String[]) object;
    } else if (object instanceof String) {
        String str = (String) object;
        str = str.trim();

        result = StringUtils.split(str, ',');
    } else if (object instanceof Object[]) {
        Object[] array = (Object[]) object;
        result = new String[array.length];
        for (int i = 0; i < array.length; i++) {
            result[i] = getString(array[i], null);
        }
    } else if (object instanceof List) {
        List list = (List) object;
        result = new String[list.size()];
        for (int i = 0; i < list.size(); i++) {
            result[i] = getString(list.get(i), null);
        }
    } else if (object.getClass().isArray()) {
        int len = Array.getLength(object);
        result = new String[len];
        for (int i = 0; i < len; i++) {
            result[i] = getString(Array.get(object, i), null);
        }
    } else if (object instanceof Number || object instanceof Boolean || object instanceof Character) {
        result = new String[] { object.toString() };
    } else {
        result = defValue;
    }
    return result;
}

---

From source file:org.jbpm.formModeler.core.processing.fieldHandlers.CreateDynamicObjectFieldFormatter.java

protected void editItemInPosition(Form parentForm, String currentNamespace, int position, Field field,
        Object value, String fieldName) {
    if (value != null) {
        if (value.getClass().isArray()) {
            CreateDynamicObjectFieldHandler fieldHandler = (CreateDynamicObjectFieldHandler) getFieldHandlersManager()
                    .getHandler(field.getFieldType());
            Form formToEdit = fieldHandler.getEditForm(field, currentNamespace);
            Map valueToEdit = (Map) Array.get(value, position);
            if (formToEdit != null) {
                setAttribute("valueToEdit", valueToEdit);
                setAttribute("name", fieldName);
                setAttribute("form", formToEdit);
                setAttribute("uid", fieldUID);
                setAttribute("index", position);
                setAttribute("parentFormId", parentForm.getId());
                setAttribute("namespace", fieldNS);
                setAttribute("parentNamespace", currentNamespace);
                setAttribute("field", field.getFieldName());
                // Override the field's own disabled and readonly values with the ones coming from a parent formatter
                // that contains it if they're set to true.
                if (isReadonly)
                    setAttribute("readonly", isReadonly);

                String rowNamespace = fieldNS + FormProcessor.CUSTOM_NAMESPACE_SEPARATOR + position;

                getFormProcessor().clear(formToEdit, rowNamespace);
                getFormProcessor().read(formToEdit, rowNamespace, valueToEdit);

                renderFragment("editItem");
            }/*  w  w w.  j  a  va  2 s  .  c o m*/
        }
    }
}

---

From source file:com.ctriposs.rest4j.client.Request.java

/**
 * Returns a read only version of {@code value}
 * @param value the object we want to get a read only version of
 * @return a read only version of {@code value}
 *///from  w w w  .  j ava2  s  .c  o  m
private Object getReadOnly(Object value) {
    if (value == null) {
        return null;
    }

    if (value instanceof Object[]) {
        // array of non-primitives
        Object[] arr = (Object[]) value;
        List<Object> list = new ArrayList<Object>(arr.length);
        for (Object o : arr) {
            list.add(getReadOnly(o));
        }
        return Collections.unmodifiableList(list);
    } else if (value.getClass().isArray()) {
        // array of primitives
        int length = Array.getLength(value);
        List<Object> list = new ArrayList<Object>();
        for (int i = 0; i < length; i++) {
            list.add(Array.get(value, i));
        }
        return Collections.unmodifiableList(list);
    } else if (value instanceof ComplexResourceKey) {
        ((ComplexResourceKey) value).makeReadOnly();
        return value;
    } else if (value instanceof CompoundKey) {
        ((CompoundKey) value).makeReadOnly();
        return value;
    } else if (value instanceof DataTemplate) {
        Object data = ((DataTemplate) value).data();
        if (data instanceof DataComplex) {
            ((DataComplex) data).makeReadOnly();
        }
        // we don't try to make other types of data read only.
        return value;
    } else if (value instanceof Iterable) {
        List<Object> list = new ArrayList<Object>();
        for (Object o : (Iterable) value) {
            list.add(getReadOnly(o));
        }
        return Collections.unmodifiableList(list);
    }

    return value;
}

---

From source file:org.apache.commons.httpclient.contrib.proxy.PluginProxyUtil.java

/**
 * Returns the proxy information for the specified sampleURL using JRE 1.4+
 * specific plugin classes./*  w  w  w.j ava  2  s . c o m*/
 *
 * Notes:
 *     Plugin 1.4+ Final added
 *     com.sun.java.browser.net.* classes ProxyInfo & ProxyService...
 *     Use those with JREs => 1.4+
 *
 * @param sampleURL the URL to check proxy settings for
 * @return ProxyHost the host and port of the proxy that should be used
 */
private static HttpHost detectProxySettingsJDK14_JDK15_JDK16(URL sampleURL) {
    HttpHost result = null;
    try {
        // Look around for the 1.4+ plugin proxy detection class...
        // Without it, cannot autodetect...
        Class<?> ProxyServiceClass = Class.forName("com.sun.java.browser.net.ProxyService");
        Method getProxyInfoMethod = ProxyServiceClass.getDeclaredMethod("getProxyInfo",
                new Class[] { URL.class });
        Object proxyInfoArrayObj = getProxyInfoMethod.invoke(null, new Object[] { sampleURL });

        if (proxyInfoArrayObj == null || Array.getLength(proxyInfoArrayObj) == 0) {
            if (LOG.isDebugEnabled()) {
                LOG.debug("1.4+ reported NULL proxy (no proxy assumed)");
            }
            result = NO_PROXY_HOST;
        } else {
            Object proxyInfoObject = Array.get(proxyInfoArrayObj, 0);
            Class<?> proxyInfoClass = proxyInfoObject.getClass();
            Method getHostMethod = proxyInfoClass.getDeclaredMethod("getHost", (Class[]) null);
            String proxyIP = (String) getHostMethod.invoke(proxyInfoObject, (Object[]) null);
            Method getPortMethod = proxyInfoClass.getDeclaredMethod("getPort", (Class[]) null);
            Integer portInteger = (Integer) getPortMethod.invoke(proxyInfoObject, (Object[]) null);
            int proxyPort = portInteger.intValue();
            if (LOG.isDebugEnabled()) {
                LOG.debug("1.4+ Proxy info get Proxy:" + proxyIP + " get Port:" + proxyPort);
            }
            result = new HttpHost(proxyIP, proxyPort);
        }
    } catch (RuntimeException e) {
        throw e;
    } catch (Exception e) {
        LOG.debug("Sun Plugin 1.4+ proxy detection class not found, " + "will try failover detection" /*, e*/);
    }
    return result;
}

---

From source file:com.krawler.br.exp.Variable.java

private void setIndexedElement(Object cont, int index, Object val, boolean insert)
        throws IllegalAccessException, IllegalArgumentException, InvocationTargetException,
        NoSuchMethodException, ProcessException {
    if (cont == null) {
        throw new ProcessException("container not found for variable: " + this);
    } else {/* www  .  j a  v a2s .co m*/
        if (indices != null && indices.containsKey(index)) {
            Iterator<Expression> itr = indices.get(index).iterator();
            Object container = null;
            while (cont != null && itr.hasNext()) {
                container = cont;
                int idx = ((Number) itr.next().getValue()).intValue();
                if (itr.hasNext()) {
                    if (cont instanceof JSONArray) {
                        cont = ((JSONArray) cont).opt(idx);
                    } else if (cont instanceof java.util.List) {
                        cont = ((java.util.List) cont).get(idx);
                    } else if (cont.getClass().isArray()) {
                        cont = Array.get(cont, idx);
                    } else
                        throw new ProcessException("Unsuported container type found in variable: " + this);
                } else {
                    if (container == null)
                        throw new ProcessException("container not found for variable: " + this);
                    else if (container instanceof JSONArray) {
                        try {
                            JSONArray jArr = (JSONArray) container;
                            int last = jArr.length();
                            if (insert) {
                                jArr.put(val);
                            }

                            if (insert && last > idx) {
                                jArr.put(last, jArr.get(last - 1));
                                last--;
                            }

                            jArr.put(idx, val);
                        } catch (JSONException ex) {
                            throw new ProcessException(ex);
                        }
                    } else if (container instanceof java.util.List) {
                        java.util.List list = (java.util.List) container;
                        if (idx == list.size()) {
                            list.add(val);
                        } else if (insert) {
                            list.add(idx, val);
                        } else {
                            list.set(idx, val);
                        }
                    } else if (container.getClass().isArray()) {
                        Array.set(container, idx, val);
                    }
                    break;
                }
            }
        }
    }
}

---

From source file:me.code4fun.roboq.Request.java

protected HttpUriRequest createHttpRequest(int method, String url, Options opts) {
    String url1 = makeUrl(url, opts);

    // Create HTTP request
    HttpUriRequest httpReq;//from  w  w  w . j a va  2 s  . c  o m
    if (GET == method) {
        httpReq = new HttpGet(url1);
    } else if (POST == method) {
        httpReq = new HttpPost(url1);
    } else if (PUT == method) {
        httpReq = new HttpPut(url1);
    } else if (DELETE == method) {
        httpReq = new HttpDelete(url1);
    } else if (TRACE == method) {
        httpReq = new HttpTrace(url1);
    } else if (HEAD == method) {
        httpReq = new HttpHead(url1);
    } else if (OPTIONS == method) {
        httpReq = new HttpOptions(url1);
    } else {
        throw new IllegalStateException("Illegal HTTP method " + method);
    }

    // Set headers
    Map<String, Object> headers = opts.getHeaders();
    for (Map.Entry<String, Object> entry : headers.entrySet()) {
        String k = entry.getKey();
        Object v = entry.getValue();
        if (v != null && v.getClass().isArray()) {
            int len = Array.getLength(v);
            for (int i = 0; i < len; i++) {
                Object v0 = Array.get(v, i);
                httpReq.addHeader(k, o2s(v0, ""));
            }
        } else if (v instanceof List) {
            for (Object v0 : (List) v)
                httpReq.addHeader(k, o2s(v0, ""));
        } else {
            httpReq.addHeader(k, o2s(v, ""));
        }
    }

    // set body
    if (httpReq instanceof HttpEntityEnclosingRequestBase) {
        ((HttpEntityEnclosingRequestBase) httpReq).setEntity(createRequestBody(method, url, opts));
    }

    return httpReq;
}

---

From source file:com.espertech.esper.epl.annotation.AnnotationUtil.java

private static Object getFinalValue(Class annotationClass, AnnotationAttribute annotationAttribute,
        Object value, EngineImportService engineImportService) throws AnnotationException {
    if (value == null) {
        if (annotationAttribute.getDefaultValue() == null) {
            throw new AnnotationException("Annotation '" + annotationClass.getSimpleName()
                    + "' requires a value for attribute '" + annotationAttribute.getName() + "'");
        }/*w w w  .  j  a  v a 2  s . c  o  m*/
        return annotationAttribute.getDefaultValue();
    }

    // handle non-array
    if (!annotationAttribute.getType().isArray()) {
        // handle primitive value
        if (!annotationAttribute.getType().isAnnotation()) {
            SimpleTypeCaster caster = SimpleTypeCasterFactory.getCaster(value.getClass(),
                    annotationAttribute.getType());
            Object finalValue = caster.cast(value);
            if (finalValue == null) {
                throw new AnnotationException("Annotation '" + annotationClass.getSimpleName() + "' requires a "
                        + annotationAttribute.getType().getSimpleName() + "-typed value for attribute '"
                        + annotationAttribute.getName() + "' but received " + "a "
                        + value.getClass().getSimpleName() + "-typed value");
            }
            return finalValue;
        } else {
            // nested annotation
            if (!(value instanceof AnnotationDesc)) {
                throw new AnnotationException("Annotation '" + annotationClass.getSimpleName() + "' requires a "
                        + annotationAttribute.getType().getSimpleName() + "-typed value for attribute '"
                        + annotationAttribute.getName() + "' but received " + "a "
                        + value.getClass().getSimpleName() + "-typed value");
            }
            return createProxy((AnnotationDesc) value, engineImportService);
        }
    }

    if (!value.getClass().isArray()) {
        throw new AnnotationException("Annotation '" + annotationClass.getSimpleName() + "' requires a "
                + annotationAttribute.getType().getSimpleName() + "-typed value for attribute '"
                + annotationAttribute.getName() + "' but received " + "a " + value.getClass().getSimpleName()
                + "-typed value");
    }

    Object array = Array.newInstance(annotationAttribute.getType().getComponentType(), Array.getLength(value));
    for (int i = 0; i < Array.getLength(value); i++) {
        Object arrayValue = Array.get(value, i);
        if (arrayValue == null) {
            throw new AnnotationException("Annotation '" + annotationClass.getSimpleName() + "' requires a "
                    + "non-null value for array elements for attribute '" + annotationAttribute.getName()
                    + "'");
        }
        SimpleTypeCaster caster = SimpleTypeCasterFactory.getCaster(arrayValue.getClass(),
                annotationAttribute.getType().getComponentType());
        Object finalValue = caster.cast(arrayValue);
        if (finalValue == null) {
            throw new AnnotationException("Annotation '" + annotationClass.getSimpleName() + "' requires a "
                    + annotationAttribute.getType().getComponentType().getSimpleName()
                    + "-typed value for array elements for attribute '" + annotationAttribute.getName()
                    + "' but received " + "a " + arrayValue.getClass().getSimpleName() + "-typed value");
        }
        Array.set(array, i, finalValue);
    }
    return array;
}

---

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