Example usage for java.util ArrayDeque clear

Introduction

In this page you can find the example usage for java.util ArrayDeque clear.

Prototype

public void clear() 

Source Link

Document

Removes all of the elements from this deque.

Usage

From source file:com.google.gwt.emultest.java.util.ArrayDequeTest.java

public void testPeekFirst() {
    Object o1 = new Object();
    Object o2 = new Object();
    Object o3 = new Object();

    ArrayDeque<Object> deque = new ArrayDeque<>();
    assertNull(deque.peekFirst());/*  www .j  a  v  a2  s.  c  o m*/

    deque.add(o1);
    assertEquals(o1, deque.peekFirst());
    checkDequeSizeAndContent(deque, o1);

    deque.add(o2);
    assertEquals(o1, deque.peekFirst());
    checkDequeSizeAndContent(deque, o1, o2);

    deque.addFirst(o3);
    assertEquals(o3, deque.peekFirst());
    checkDequeSizeAndContent(deque, o3, o1, o2);

    deque.clear();
    assertTrue(deque.isEmpty());
    assertNull(deque.peekFirst());
}

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From source file:com.google.gwt.emultest.java.util.ArrayDequeTest.java

public void testFailFastIterator() {
    ArrayDeque<Object> deque = new ArrayDeque<>(asList(getFullNonNullElements()));
    Iterator<Object> it = deque.iterator();
    it.next();/* w ww. java 2  s  .c om*/
    deque.removeFirst();
    try {
        it.next();
    } catch (ConcurrentModificationException e) {
        fail();
    }
    deque.removeLast();
    try {
        it.next();
        fail();
    } catch (ConcurrentModificationException expected) {
    }

    deque = new ArrayDeque<>(asList(getFullNonNullElements()));
    it = deque.iterator();
    it.next();
    deque.clear();
    try {
        it.next();
        fail();
    } catch (ConcurrentModificationException expected) {
    }

    deque = new ArrayDeque<>(asList(getFullNonNullElements()));
    it = deque.iterator();
    it.next();
    deque.addFirst(new Object());
    try {
        it.next();
    } catch (ConcurrentModificationException e) {
        fail();
    }
    deque.addLast(new Object());
    try {
        it.next();
        fail();
    } catch (ConcurrentModificationException expected) {
    }

    deque = new ArrayDeque<>(asList(getFullNonNullElements()));
    it = deque.iterator();
    it.next();
    it.next();
    deque.removeFirst();
    try {
        it.remove();
    } catch (ConcurrentModificationException e) {
        fail();
    }

    deque = new ArrayDeque<>(asList(getFullNonNullElements()));
    it = deque.iterator();
    it.next();
    it.next();
    deque.removeFirst();
    deque.removeFirst();
    try {
        it.remove();
        fail();
    } catch (ConcurrentModificationException expected) {
    }
}

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From source file:com.google.gwt.emultest.java.util.ArrayDequeTest.java

public void testFailFastDescendingIterator() {
    ArrayDeque<Object> deque = new ArrayDeque<>(asList(getFullNonNullElements()));
    Iterator<Object> it = deque.descendingIterator();
    it.next();// w  w w  .j a va 2  s . c o  m
    deque.removeLast();
    try {
        it.next();
    } catch (ConcurrentModificationException e) {
        fail();
    }
    deque.removeFirst();
    try {
        it.next();
        fail();
    } catch (ConcurrentModificationException expected) {
    }

    deque = new ArrayDeque<>(asList(getFullNonNullElements()));
    it = deque.descendingIterator();
    it.next();
    deque.clear();
    try {
        it.next();
        fail();
    } catch (ConcurrentModificationException expected) {
    }

    deque = new ArrayDeque<>(asList(getFullNonNullElements()));
    it = deque.descendingIterator();
    it.next();
    deque.addLast(new Object());
    try {
        it.next();
    } catch (ConcurrentModificationException e) {
        fail();
    }
    deque.addFirst(new Object());
    try {
        it.next();
        fail();
    } catch (ConcurrentModificationException expected) {
    }

    deque = new ArrayDeque<>(asList(getFullNonNullElements()));
    it = deque.descendingIterator();
    it.next();
    it.next();
    deque.removeLast();
    try {
        it.remove();
    } catch (ConcurrentModificationException e) {
        fail();
    }

    deque = new ArrayDeque<>(asList(getFullNonNullElements()));
    it = deque.descendingIterator();
    it.next();
    it.next();
    deque.removeLast();
    deque.removeLast();
    try {
        it.remove();
        fail();
    } catch (ConcurrentModificationException expected) {
    }
}

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From source file:com.espertech.esper.core.EPRuntimeImpl.java

/**
 * Processing multiple filter matches for a statement.
 * @param handle statement handle/*from w  w w.j  a va2s. co m*/
 * @param callbackList object containing callbacks
 * @param event to process
 * @param version filter version
 */
public void processStatementFilterMultiple(EPStatementHandle handle,
        ArrayDeque<FilterHandleCallback> callbackList, EventBean event, long version) {
    handle.getStatementLock().acquireWriteLock(services.getStatementLockFactory());
    try {
        if (handle.isHasVariables()) {
            services.getVariableService().setLocalVersion();
        }
        if (!handle.isCurrentFilter(version)) {
            callbackList.clear();
            ArrayDeque<FilterHandle> callbackListNew = getCallbackList(event, handle.getStatementId());
            for (FilterHandle callback : callbackListNew) {
                EPStatementHandleCallback handleCallbackFilter = (EPStatementHandleCallback) callback;
                callbackList.add(handleCallbackFilter.getFilterCallback());
            }
        }

        if (isSubselectPreeval) {
            // sub-selects always go first
            for (FilterHandleCallback callback : callbackList) {
                if (callback.isSubSelect()) {
                    callback.matchFound(event, callbackList);
                }
            }

            for (FilterHandleCallback callback : callbackList) {
                if (!callback.isSubSelect()) {
                    callback.matchFound(event, callbackList);
                }
            }
        } else {
            // sub-selects always go last
            for (FilterHandleCallback callback : callbackList) {
                if (!callback.isSubSelect()) {
                    callback.matchFound(event, callbackList);
                }
            }

            for (FilterHandleCallback callback : callbackList) {
                if (callback.isSubSelect()) {
                    callback.matchFound(event, callbackList);
                }
            }
        }

        // internal join processing, if applicable
        handle.internalDispatch(this.engineFilterAndDispatchTimeContext);
    } catch (RuntimeException ex) {
        services.getExceptionHandlingService().handleException(ex, handle);
    } finally {
        handle.getStatementLock().releaseWriteLock(services.getStatementLockFactory());
    }
}

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