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:com.google.dexmaker.ProxyBuilder.java

private void getMethodsToProxy(Set<MethodSetEntry> sink, Set<MethodSetEntry> seenFinalMethods, Class<?> c) {
    for (Method method : c.getDeclaredMethods()) {
        for (Class<? extends Annotation> annotation : Constants.annotation) {
            if (method.getAnnotation(annotation) != null) {
                MethodSetEntry entry = new MethodSetEntry(method);
                if (seenFinalMethods.contains(entry)) {
                    continue;
                }/*from www  .  j a va  2  s .c o m*/
                if (sink.add(entry)) {
                    MethodEntity entity = new MethodEntity();
                    entity.clazz = c;
                    entity.name = method.getName();
                    entity.params = method.getParameterTypes();
                    entity.method = method;
                    methods.add(entity);
                }
            }
        }

        if (!Constants.method.contains(method.getName())) {
            // ??
            continue;
        }
        if ((method.getModifiers() & Modifier.FINAL) != 0) {
            // Skip final methods, we can't override them. We
            // also need to remember them, in case the same
            // method exists in a parent class.
            seenFinalMethods.add(new MethodSetEntry(method));
            continue;
        }

        if ((method.getModifiers() & STATIC) != 0) {
            // Skip static methods, overriding them has no effect.
            continue;
        }
        if ((method.getModifiers() & PRIVATE) != 0) {
            // Skip static methods, overriding them has no effect.
            continue;
        }
        //         if ((method.getModifiers() & Modifier.PROTECTED) != 0) {
        //            // Skip static methods, overriding them has no effect.
        //            continue;
        //         }
        if (method.getName().equals("finalize") && method.getParameterTypes().length == 0) {
            // Skip finalize method, it's likely important that it execute as normal.
            continue;
        }
        MethodSetEntry entry = new MethodSetEntry(method);
        if (seenFinalMethods.contains(entry)) {
            // This method is final in a child class.
            // We can't override it.
            continue;
        }
        if (sink.add(entry)) {
            MethodEntity entity = new MethodEntity();
            entity.clazz = c;
            entity.name = method.getName();
            entity.params = method.getParameterTypes();
            entity.method = method;
            methods.add(entity);
        }
    }

    for (Class<?> i : c.getInterfaces()) {
        getMethodsToProxy(sink, seenFinalMethods, i);
    }
}

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From source file:org.wso2.carbon.identity.openidconnect.DefaultOIDCClaimsCallbackHandlerTest.java

private void setStaticField(Class classname, String fieldName, Object value)
        throws NoSuchFieldException, IllegalAccessException {

    Field declaredField = classname.getDeclaredField(fieldName);
    declaredField.setAccessible(true);//from w  w w  .jav a 2 s. co m

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

    declaredField.set(null, value);
}

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From source file:org.apache.hadoop.hbase.client.TestHCM.java

private int setNumTries(HConnectionImplementation hci, int newVal) throws Exception {
    Field numTries = hci.getClass().getDeclaredField("numTries");
    numTries.setAccessible(true);/*from   w ww.  j a v a  2 s. c  om*/
    Field modifiersField = Field.class.getDeclaredField("modifiers");
    modifiersField.setAccessible(true);
    modifiersField.setInt(numTries, numTries.getModifiers() & ~Modifier.FINAL);
    final int prevNumRetriesVal = (Integer) numTries.get(hci);
    numTries.set(hci, newVal);

    return prevNumRetriesVal;
}

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From source file:org.jgentleframework.utils.ReflectUtils.java

/**
 * Sets new value to static final field.
 * <p>//from  w w w.  j a v  a2 s. co m
 * <b>Note</b>: this method only run on Sun JDK
 * 
 * @param field
 *            the field
 * @param value
 *            the new value
 * @throws NoSuchFieldException
 *             the no such field exception
 * @throws IllegalAccessException
 *             the illegal access exception
 */
public static void setStaticFinalField(Field field, Object value)
        throws NoSuchFieldException, IllegalAccessException {

    field.setAccessible(true);
    Field modifiersField = Field.class.getDeclaredField(MODIFIERS_FIELD);
    modifiersField.setAccessible(true);
    int modifiers = modifiersField.getInt(field);
    modifiers &= ~Modifier.FINAL;
    modifiersField.setInt(field, modifiers);
    FieldAccessor fa = reflection.newFieldAccessor(field, false);
    fa.set(null, value);
}

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From source file:org.apache.hive.jdbc.TestJdbcWithMiniHS2.java

private void setReflectionUtilCache() {
    Field constructorCacheField;//from   ww  w  . ja v a  2  s.  c o m
    Cache<Class<?>, Constructor<?>> tmp;
    try {
        constructorCacheField = ReflectionUtil.class.getDeclaredField("CONSTRUCTOR_CACHE");
        if (constructorCacheField != null) {
            constructorCacheField.setAccessible(true);
            Field modifiersField = Field.class.getDeclaredField("modifiers");
            modifiersField.setAccessible(true);
            modifiersField.setInt(constructorCacheField,
                    constructorCacheField.getModifiers() & ~Modifier.FINAL);
            tmp = CacheBuilder.newBuilder().expireAfterAccess(5, TimeUnit.SECONDS).concurrencyLevel(64)
                    .weakKeys().weakValues().build();
            constructorCacheField.set(tmp.getClass(), tmp);
        }
    } catch (Exception e) {
        System.out.println("Error when setting the CONSTRUCTOR_CACHE to expire: " + e);
    }
}

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From source file:org.wso2.carbon.identity.oauth.endpoint.authz.OAuth2AuthzEndpointTest.java

@Test(dataProvider = "providePathExistsData")
public void testGetFormPostRedirectPage(String carbonHome, boolean fileExists) throws Exception {
    spy(CarbonUtils.class);
    doReturn(carbonHome).when(CarbonUtils.class, "getCarbonHome");

    Method getFormPostRedirectPage = authzEndpointObject.getClass()
            .getDeclaredMethod("getFormPostRedirectPage");
    getFormPostRedirectPage.setAccessible(true);
    String value = (String) getFormPostRedirectPage.invoke(authzEndpointObject);
    assertEquals((value != null), fileExists, "FormPostRedirectPage value is incorrect");

    Field formPostRedirectPage = authzEndpointObject.getClass().getDeclaredField("formPostRedirectPage");

    Field modifiersField = Field.class.getDeclaredField("modifiers");
    modifiersField.setAccessible(true);/*from   w  ww.j av  a 2 s .c  o m*/
    modifiersField.setInt(formPostRedirectPage, formPostRedirectPage.getModifiers() & ~Modifier.FINAL);
    formPostRedirectPage.setAccessible(true);
    formPostRedirectPage.set(authzEndpointObject, value);

    Method createFormPage = authzEndpointObject.getClass().getDeclaredMethod("createFormPage", String.class,
            String.class, String.class, String.class);
    createFormPage.setAccessible(true);
    value = (String) createFormPage.invoke(authzEndpointObject, APP_REDIRECT_URL_JSON, APP_REDIRECT_URL,
            StringUtils.EMPTY, "sessionDataValue");
    assertNotNull(value, "Form post page is null");
}

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From source file:org.apache.bookkeeper.mledger.impl.ManagedLedgerTest.java

@Test
public void testBacklogCursor() throws Exception {
    ManagedLedgerImpl ledger = (ManagedLedgerImpl) factory.open("cache_backlog_ledger");

    final long maxMessageCacheRetentionTimeMillis = 100;
    Field field = ManagedLedgerImpl.class.getDeclaredField("maxMessageCacheRetentionTimeMillis");
    field.setAccessible(true);/*from w  w  w.  j  av a 2s .c  om*/
    Field modifiersField = Field.class.getDeclaredField("modifiers");
    modifiersField.setAccessible(true);
    modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
    field.set(ledger, maxMessageCacheRetentionTimeMillis);
    Field backlogThresholdField = ManagedLedgerImpl.class.getDeclaredField("maxActiveCursorBacklogEntries");
    backlogThresholdField.setAccessible(true);
    final long maxActiveCursorBacklogEntries = (long) backlogThresholdField.get(ledger);

    // Open Cursor also adds cursor into activeCursor-container
    ManagedCursor cursor1 = ledger.openCursor("c1");
    ManagedCursor cursor2 = ledger.openCursor("c2");

    final int totalBacklogSizeEntries = (int) maxActiveCursorBacklogEntries;
    CountDownLatch latch = new CountDownLatch(totalBacklogSizeEntries);
    for (int i = 0; i < totalBacklogSizeEntries + 1; i++) {
        String content = "entry"; // 5 bytes
        ByteBuf entry = getMessageWithMetadata(content.getBytes());
        ledger.asyncAddEntry(entry, new AddEntryCallback() {
            @Override
            public void addComplete(Position position, Object ctx) {
                latch.countDown();
                entry.release();
            }

            @Override
            public void addFailed(ManagedLedgerException exception, Object ctx) {
                latch.countDown();
                entry.release();
            }

        }, null);
    }
    latch.await();

    // Verify: cursors are active as :haven't started deactivateBacklogCursor scan
    assertTrue(cursor1.isActive());
    assertTrue(cursor2.isActive());

    // it allows message to be older enough to be considered in backlog
    Thread.sleep(maxMessageCacheRetentionTimeMillis * 2);

    // deactivate backlog cursors
    ledger.checkBackloggedCursors();
    Thread.sleep(100);

    // both cursors have to be inactive
    assertFalse(cursor1.isActive());
    assertFalse(cursor2.isActive());

    // read entries so, cursor1 reaches maxBacklog threshold again to be active again
    List<Entry> entries1 = cursor1.readEntries(50);
    for (Entry entry : entries1) {
        log.info("Read entry. Position={} Content='{}'", entry.getPosition(), new String(entry.getData()));
        entry.release();
    }

    // activate cursors which caught up maxbacklog threshold
    ledger.checkBackloggedCursors();

    // verify: cursor1 has consumed messages so, under maxBacklog threshold => active
    assertTrue(cursor1.isActive());

    // verify: cursor2 has not consumed messages so, above maxBacklog threshold => inactive
    assertFalse(cursor2.isActive());

    ledger.close();
}

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From source file:org.apache.hadoop.hbase.HBaseTestingUtility.java

/**
 * Tasktracker has a bug where changing the hadoop.log.dir system property
 * will not change its internal static LOG_DIR variable.
 *//* w w w .java2  s.c  om*/
private void forceChangeTaskLogDir() {
    Field logDirField;
    try {
        logDirField = TaskLog.class.getDeclaredField("LOG_DIR");
        logDirField.setAccessible(true);

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

        logDirField.set(null, new File(hadoopLogDir, "userlogs"));
    } catch (SecurityException e) {
        throw new RuntimeException(e);
    } catch (NoSuchFieldException e) {
        // TODO Auto-generated catch block
        throw new RuntimeException(e);
    } catch (IllegalArgumentException e) {
        throw new RuntimeException(e);
    } catch (IllegalAccessException e) {
        throw new RuntimeException(e);
    }
}

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From source file:org.wso2.carbon.apimgt.impl.AbstractAPIManagerTestCase.java

private static void setFinalStatic(Field field, Object newValue) throws Exception {
    field.setAccessible(true);//w  w  w.  j  a  v a2 s. c  o  m
    Field modifiersField = Field.class.getDeclaredField("modifiers");
    modifiersField.setAccessible(true);
    modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
    field.set(null, newValue);
}

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From source file:com.codename1.impl.android.AndroidImplementation.java

private static void allowPatch(HttpURLConnection connection) {
    if (enabledPatch) {
        return;/*from  w  ww .  j  a v a 2s .c  o m*/
    }
    if (patchFailed) {
        connection.setRequestProperty("X-HTTP-Method-Override", "PATCH");
        return;
    }
    try {
        Field methodsField = HttpURLConnection.class.getDeclaredField("methods");

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

        methodsField.setAccessible(true);

        String[] oldMethods = (String[]) methodsField.get(null);
        Set<String> methodsSet = new LinkedHashSet<String>(Arrays.asList(oldMethods));
        methodsSet.addAll(Arrays.asList("PATCH"));
        String[] newMethods = methodsSet.toArray(new String[0]);

        methodsField.set(null/*static field*/, newMethods);
        enabledPatch = true;
    } catch (NoSuchFieldException e) {
        patchFailed = true;
        connection.setRequestProperty("X-HTTP-Method-Override", "PATCH");
    } catch (IllegalAccessException ee) {
        patchFailed = true;
        connection.setRequestProperty("X-HTTP-Method-Override", "PATCH");
    }
}

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