Example usage for java.lang.reflect Modifier FINAL

Introduction

In this page you can find the example usage for java.lang.reflect Modifier FINAL.

Prototype

int FINAL

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Document

The int value representing the final modifier.

Usage

From source file:hu.bme.mit.sette.common.model.snippet.SnippetContainer.java

/**
 * Validates the fields of the class./*w  ww .  ja  va  2  s.  co m*/
 *
 * @param validator
 *            a validator
 */
private void validateFields(final AbstractValidator<?> validator) {
    // check: only constant ("public static final") or synthetic fields
    for (Field field : javaClass.getDeclaredFields()) {
        if (field.isSynthetic()) {
            // skip for synthetic fields (e.g. switch for enum generates
            // synthetic methods and fields)
            continue;
        }

        FieldValidator v = new FieldValidator(field);
        v.withModifiers(Modifier.PUBLIC | Modifier.STATIC | Modifier.FINAL);
        v.withoutModifiers(Modifier.SYNCHRONIZED | Modifier.TRANSIENT | Modifier.VOLATILE);

        validator.addChildIfInvalid(v);
    }
}

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From source file:hu.bme.mit.sette.common.model.snippet.SnippetInputFactoryContainer.java

/**
 * Validates methods of the class.//from  w w  w . jav a 2  s.com
 *
 * @param validator
 *            a validator
 * @return a map containing the input factory methods by their name
 */
private Map<String, Method> validateMethods(final AbstractValidator<?> validator) {
    // check: only "public static" or synthetic methods
    Map<String, Method> factoryMethods = new HashMap<String, Method>();

    for (Method method : javaClass.getDeclaredMethods()) {
        if (method.isSynthetic()) {
            // skip synthetic methods
            continue;
        }

        MethodValidator v = new MethodValidator(method);

        if (factoryMethods.get(method.getName()) != null) {
            v.addException("The method must have a unique name");
        }

        v.withModifiers(Modifier.PUBLIC | Modifier.STATIC);
        v.withoutModifiers(Modifier.ABSTRACT | Modifier.FINAL | Modifier.NATIVE | Modifier.SYNCHRONIZED);

        factoryMethods.put(method.getName(), method);

        validator.addChildIfInvalid(v);
    }

    return factoryMethods;
}

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From source file:org.apache.hadoop.hbase.fs.HFileSystem.java

/**
 * Add an interceptor on the calls to the namenode#getBlockLocations from the DFSClient
 * linked to this FileSystem. See HBASE-6435 for the background.
 * <p/>/*  w ww.  j  a v a2  s.c  o  m*/
 * There should be no reason, except testing, to create a specific ReorderBlocks.
 *
 * @return true if the interceptor was added, false otherwise.
 */
static boolean addLocationsOrderInterceptor(Configuration conf, final ReorderBlocks lrb) {
    if (!conf.getBoolean("hbase.filesystem.reorder.blocks", true)) { // activated by default
        LOG.debug("addLocationsOrderInterceptor configured to false");
        return false;
    }

    FileSystem fs;
    try {
        fs = FileSystem.get(conf);
    } catch (IOException e) {
        LOG.warn("Can't get the file system from the conf.", e);
        return false;
    }

    if (!(fs instanceof DistributedFileSystem)) {
        LOG.debug("The file system is not a DistributedFileSystem. " + "Skipping on block location reordering");
        return false;
    }

    DistributedFileSystem dfs = (DistributedFileSystem) fs;
    DFSClient dfsc = dfs.getClient();
    if (dfsc == null) {
        LOG.warn("The DistributedFileSystem does not contain a DFSClient. Can't add the location "
                + "block reordering interceptor. Continuing, but this is unexpected.");
        return false;
    }

    try {
        Field nf = DFSClient.class.getDeclaredField("namenode");
        nf.setAccessible(true);
        Field modifiersField = Field.class.getDeclaredField("modifiers");
        modifiersField.setAccessible(true);
        modifiersField.setInt(nf, nf.getModifiers() & ~Modifier.FINAL);

        ClientProtocol namenode = (ClientProtocol) nf.get(dfsc);
        if (namenode == null) {
            LOG.warn("The DFSClient is not linked to a namenode. Can't add the location block"
                    + " reordering interceptor. Continuing, but this is unexpected.");
            return false;
        }

        ClientProtocol cp1 = createReorderingProxy(namenode, lrb, conf);
        nf.set(dfsc, cp1);
        LOG.info("Added intercepting call to namenode#getBlockLocations so can do block reordering"
                + " using class " + lrb.getClass());
    } catch (NoSuchFieldException e) {
        LOG.warn("Can't modify the DFSClient#namenode field to add the location reorder.", e);
        return false;
    } catch (IllegalAccessException e) {
        LOG.warn("Can't modify the DFSClient#namenode field to add the location reorder.", e);
        return false;
    }

    return true;
}

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From source file:edu.illinois.ncsa.springdata.SpringData.java

/**
 * Check each field in object to see if it is already seen. This will modify
 * collections, lists and arrays as well as the fields in an object.
 * //  ww  w.  ja  v  a 2s.c  o  m
 * @param obj
 *            the object to be checked for duplicates.
 * @param seen
 *            objects that have already been checked.
 * @return the object with all duplicates removed
 */
private static <T> T removeDuplicate(T obj, Map<String, Object> seen) {
    if (obj == null) {
        return null;
    }
    if (obj instanceof AbstractBean) {
        String id = ((AbstractBean) obj).getId();
        if (seen.containsKey(id)) {
            return (T) seen.get(id);
        }
        seen.put(id, obj);

        // check all subfields
        for (Field field : obj.getClass().getDeclaredFields()) {
            if ((field.getModifiers() & Modifier.FINAL) == 0) {
                try {
                    field.setAccessible(true);
                    field.set(obj, removeDuplicate(field.get(obj), seen));
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        }

    } else if (obj instanceof Collection<?>) {
        Collection col = (Collection) obj;
        ArrayList arr = new ArrayList(col);
        col.clear();
        for (int i = 0; i < arr.size(); i++) {
            Object x = removeDuplicate(arr.get(i), seen);
            col.add(x);
        }
    } else if (obj instanceof Map<?, ?>) {
        Map map = (Map) obj;
        ArrayList<Entry> arr = new ArrayList(map.entrySet());
        map.clear();
        for (int i = 0; i < arr.size(); i++) {
            Object k = removeDuplicate(arr.get(i).getKey(), seen);
            Object v = removeDuplicate(arr.get(i).getValue(), seen);
            map.put(k, v);
        }
    } else if (obj.getClass().isArray()) {
        Object[] arr = (Object[]) obj;
        for (int i = 0; i < arr.length; i++) {
            arr[i] = removeDuplicate(arr[i], seen);
        }
    }

    return obj;
}

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From source file:org.jboss.pnc.causeway.ctl.ImportControllerTest.java

static void setFinalField(Object obj, Field field, Object newValue) throws ReflectiveOperationException {
    field.setAccessible(true);/*  ww w . j ava 2  s  .  c  o  m*/

    Field modifiersField = Field.class.getDeclaredField("modifiers");
    modifiersField.setAccessible(true);
    modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);

    field.set(obj, newValue);
}

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From source file:org.apache.hadoop.net.TestDNS.java

/**
 * Change DNS#cachedHostName to something which cannot be a real
 * host name. Uses reflection since it is a 'private final' field.
 *///from   ww w.ja v a2s  . c  om
private String changeDnsCachedHostname(final String newHostname) throws Exception {
    final String oldCachedHostname = DNS.getDefaultHost(DEFAULT);
    Field field = DNS.class.getDeclaredField("cachedHostname");
    field.setAccessible(true);
    Field modifiersField = Field.class.getDeclaredField("modifiers");
    modifiersField.setAccessible(true);
    modifiersField.set(field, field.getModifiers() & ~Modifier.FINAL);
    field.set(null, newHostname);
    return oldCachedHostname;
}

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From source file:net.minecraftforge.common.util.EnumHelper.java

public static void setFailsafeFieldValue(Field field, @Nullable Object target, @Nullable Object value)
        throws Exception {
    field.setAccessible(true);//from  ww  w  . j  av  a 2s.  c  o  m
    Field modifiersField = Field.class.getDeclaredField("modifiers");
    modifiersField.setAccessible(true);
    modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
    Object fieldAccessor = newFieldAccessor.invoke(reflectionFactory, field, false);
    fieldAccessorSet.invoke(fieldAccessor, target, value);
}

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From source file:com.viadee.acceptancetests.roo.addon.AcceptanceTestGroupMetadata.java

private static DefaultMethodMetadata newAcceptanceTestGroupMethod(String identifier, JavaType returnType,
        String methodName, List<AnnotatedJavaType> parameters, List<JavaSymbolName> parameterNames,
        String body) {/*ww  w  .  j  av a  2s .c  o m*/
    return new DefaultMethodMetadata(identifier, Modifier.FINAL, new JavaSymbolName(methodName), returnType,
            parameters, parameterNames, null, null, body);
}

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From source file:hd3gtv.mydmam.db.orm.CassandraOrm.java

private ArrayList<Field> getOrmobjectUsableFields() {
    ArrayList<Field> result = new ArrayList<Field>();

    Field[] fields = this.reference.getFields();
    Field field;/*from  ww  w  .  j  av  a2 s  .  c  o  m*/
    int mod;
    for (int pos_df = 0; pos_df < fields.length; pos_df++) {
        field = fields[pos_df];
        if (field.isAnnotationPresent(Transient.class)) {
            /**
             * Is transient ?
             */
            continue;
        }
        if (field.getName().equals("key")) {
            /**
             * Not this (primary key)
             */
            continue;
        }
        mod = field.getModifiers();

        if ((mod & Modifier.PROTECTED) != 0)
            continue;
        if ((mod & Modifier.PRIVATE) != 0)
            continue;
        if ((mod & Modifier.ABSTRACT) != 0)
            continue;
        if ((mod & Modifier.STATIC) != 0)
            continue;
        if ((mod & Modifier.FINAL) != 0)
            continue;
        if ((mod & Modifier.TRANSIENT) != 0)
            continue;
        if ((mod & Modifier.INTERFACE) != 0)
            continue;

        try {
            result.add(field);
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (SecurityException e) {
            e.printStackTrace();
        }
    }

    return result;
}

---

From source file:com.github.mbenson.privileged.weaver.PrivilegedMethodWeaver.java

private CtClass createAction(CtClass type, CtMethod impl, Class<?> iface)
        throws NotFoundException, CannotCompileException, IOException {
    final boolean exc = impl.getExceptionTypes().length > 0;

    final CtClass actionType = classPool.get(iface.getName());

    final String simpleName = generateActionClassname(impl);
    debug("Creating action type %s for method %s", simpleName, toString(impl));
    final CtClass result = type.makeNestedClass(simpleName, true);
    result.addInterface(actionType);//from  w  w w .  j  a  va 2s .  c  o  m

    final CtField owner;
    if (Modifier.isStatic(impl.getModifiers())) {
        owner = null;
    } else {
        owner = new CtField(type, generateName("owner"), result);
        owner.setModifiers(Modifier.PRIVATE | Modifier.FINAL);
        debug("Adding owner field %s to %s", owner.getName(), simpleName);
        result.addField(owner);
    }

    final List<String> propagatedParameters = new ArrayList<String>();
    int index = -1;
    for (final CtClass param : impl.getParameterTypes()) {
        final String f = String.format("arg%s", Integer.valueOf(++index));
        final CtField fld = new CtField(param, f, result);
        fld.setModifiers(Modifier.PRIVATE | Modifier.FINAL);
        debug("Copying parameter %s from %s to %s.%s", index, toString(impl), simpleName, f);
        result.addField(fld);
        propagatedParameters.add(f);
    }
    {
        final StrBuilder constructor = new StrBuilder(simpleName).append('(');
        boolean sep = false;
        final Body body = new Body();

        for (final CtField fld : result.getDeclaredFields()) {
            if (sep) {
                constructor.append(", ");
            } else {
                sep = true;
            }
            constructor.append(fld.getType().getName()).append(' ').append(fld.getName());
            body.appendLine("this.%1$s = %1$s;", fld.getName());
        }
        constructor.append(") ").append(body.complete());

        final String c = constructor.toString();
        debug("Creating action constructor:");
        debug(c);
        result.addConstructor(CtNewConstructor.make(c, result));
    }
    {
        final StrBuilder run = new StrBuilder("public Object run() ");
        if (exc) {
            run.append("throws Exception ");
        }
        final Body body = new Body();
        final CtClass rt = impl.getReturnType();
        final boolean isVoid = rt.equals(CtClass.voidType);
        if (!isVoid) {
            body.append("return ");
        }
        final String deref = Modifier.isStatic(impl.getModifiers()) ? type.getName() : owner.getName();
        final String call = String.format("%s.%s(%s)", deref, impl.getName(),
                StringUtils.join(propagatedParameters, ", "));

        if (!isVoid && rt.isPrimitive()) {
            body.appendLine("%2$s.valueOf(%1$s);", call, ((CtPrimitiveType) rt).getWrapperName());
        } else {
            body.append(call).append(';').appendNewLine();

            if (isVoid) {
                body.appendLine("return null;");
            }
        }

        run.append(body.complete());

        final String r = run.toString();
        debug("Creating run method:");
        debug(r);
        result.addMethod(CtNewMethod.make(r, result));
    }
    getClassFileWriter().write(result);
    debug("Returning action type %s", result);
    return result;
}

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