Examples of java.beans.beancontext.BeanContextChild

java.beans.beancontext.BeanContextChild

JavaBeans wishing to be nested within, and obtain a reference to their execution environment, or context, as defined by the BeanContext sub-interface shall implement this interface.

Conformant BeanContexts shall as a side effect of adding a BeanContextChild object shall pass a reference to itself via the setBeanContext() method of this interface.

Note that a BeanContextChild may refuse a change in state by throwing PropertyVetoedException in response.

In order for persistence mechanisms to function properly on BeanContextChild instances across a broad variety of scenarios, implementing classes of this interface are required to define as transient, any or all fields, or instance variables, that may contain, or represent, references to the nesting BeanContext instance or other resources obtained from the BeanContext via any unspecified mechanisms.
@author Laurence P. G. Cable @version 1.21, 11/17/05 @since 1.2 @see java.beans.beancontext.BeanContext @see java.beans.PropertyChangeEvent @see java.beans.PropertyChangeListener @see java.beans.PropertyVetoEvent @see java.beans.PropertyVetoListener @see java.beans.PropertyVetoException

    private boolean internalRemove(Object o, boolean publicApi) {


        if (!contains(o)) return false;


        // todo: for multithreaded usage this block needs to be synchronized
        BeanContextChild bcc = null;
        if (o instanceof BeanContextProxy) {
            bcc = ((BeanContextProxy) o).getBeanContextProxy();
        }
        else if (o instanceof BeanContextChild) {
            bcc = (BeanContextChild) o;
        }


        if (bcc != null) {


            /*
             If remove invoked as a result of the BeanContext receiving an unexpected PropertyChangeEvent
             notification as a result of a 3rd party invoking setBeanContext() then the remove implementation
             shall not invoke setBeanContext(null) on that child as part of the remove() semantics, since
             doing so would overwrite the value previously set by the 3rd party.
            */
            if (publicApi) {


                // remove the property/veto listeners -- we know we want to remove the bean
                // and don't need to be notified if we have initiated the removal
                bcc.removePropertyChangeListener("beanContext", _childPcl);
                bcc.removeVetoableChangeListener("beanContext", _childVcl);


                try {
                    bcc.setBeanContext(null);
                }
                catch (PropertyVetoException e) {
                    // rewire the listeners we removed above then except
                    bcc.addPropertyChangeListener("beanContext", _childPcl);
                    bcc.addVetoableChangeListener("beanContext", _childVcl);
                    throw new IllegalStateException(e);
                }
            }
        }

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    /*
     * Class under test for void
     * BeanContextChildSupport(java.beans.beancontext.BeanContextChild)
     */
    public void testBeanContextChildSupportBeanContextChild() {
        BeanContextChild c = new MockBeanContextChild();
        BeanContextChildSupport support = new MockBeanContextChildSupport(c);
        assertSame(c, support.getBeanContextChildPeer());
        assertSame(c, support.beanContextChildPeer);
    }

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    public void testGetBeanContextChildPeer() throws Exception {
        BeanContextChildSupport support = new MockBeanContextChildSupport();
        assertSame(support, support.beanContextChildPeer);
        assertSame(support, support.getBeanContextChildPeer());


        BeanContextChild mockChild = new MockBeanContextChild();
        support = new MockBeanContextChildSupport(mockChild);
        assertSame(mockChild, support.beanContextChildPeer);
        assertSame(mockChild, support.getBeanContextChildPeer());


        BeanContextChildSupport sup = new BeanContextChildSupport();

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    public void testIsDelegated() throws Exception {
        BeanContextChildSupport support = new MockBeanContextChildSupport();
        assertFalse(support.isDelegated());


        BeanContextChild mockChild = new MockBeanContextChild();
        support = new MockBeanContextChildSupport(mockChild);
        assertTrue(support.isDelegated());


        support.beanContextChildPeer = support;
        assertFalse(support.isDelegated());

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        BeanContextChildSupport support = new MockBeanContextChildSupport();
        support.serviceRevoked(null);
    }


    public void testSetBeanContext() throws PropertyVetoException {
        BeanContextChild peer = new MockBeanContextChild();
        MockBeanContextChildSupport support = new MockBeanContextChildSupport(
                peer);
        MockPropertyChangeListener l1 = new MockPropertyChangeListener();
        MockVetoableChangeListener l2 = new MockVetoableChangeListener();
        support.addPropertyChangeListener("beanContext", l1);

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        MockVetoableChangeListener l3 = new MockVetoableChangeListener();
        support.addBeanContextMembershipListener(l1);
        support.addPropertyChangeListener("children", l2);
        support.addVetoableChangeListener("children", l3);


        BeanContextChild child = new MockBeanContextChild();
        support.add(child);
        support.records.assertRecord("initialize", null);
        support.records.assertRecord("validatePendingAdd", child, Boolean.TRUE);
        support.records.assertRecord("createBCSChild", child, null, support
                .children().get(child));
        support.records.assertRecord("childJustAddedHook", child, support
                .children().get(child), null);
        support.records.assertEndOfRecords();
        assertTrue(l1.lastEventAdd);
        assertMembershipEvent(l1.lastEvent, support, null, child);
        assertNull(l2.lastEvent);
        assertNull(l3.lastEvent);


        assertSame(support, child.getBeanContext());
    }

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        MockVetoableChangeListener l3 = new MockVetoableChangeListener();
        support.addBeanContextMembershipListener(l1);
        support.addPropertyChangeListener("children", l2);
        support.addVetoableChangeListener("children", l3);


        BeanContextChild childPeer = new MockBeanContextChild();
        BeanContextProxy child = new MockBeanContextProxy(childPeer);
        support.add(child);
        support.records.assertRecord("initialize", null);
        support.records.assertRecord("validatePendingAdd", child, Boolean.TRUE);
        support.records.assertRecord("createBCSChild", child, childPeer,
                support.children().get(child));
        support.records.assertRecord("createBCSChild", childPeer, child,
                support.children().get(childPeer));
        support.records.assertRecord("childJustAddedHook", child, support
                .children().get(child), null);
        support.records.assertRecord("childJustAddedHook", childPeer, support
                .children().get(childPeer), null);
        support.records.assertEndOfRecords();
        assertTrue(l1.lastEventAdd);
        assertMembershipEvent(l1.lastEvent, support, null, Arrays
                .asList(new Object[] { child, childPeer }));
        assertNull(l2.lastEvent);
        assertNull(l3.lastEvent);


        assertSame(support, childPeer.getBeanContext());
        assertEquals(2, support.size());
    }

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        support.addBeanContextMembershipListener(l1);
        support.addPropertyChangeListener("children", l2);
        support.addVetoableChangeListener("children", l3);


        support.vetoAddRemove = true;
        BeanContextChild child = new MockBeanContextChild();
        try {
            support.add(child);
            fail();
        } catch (IllegalStateException e) {
            // expected
        }
        support.records.assertRecord("initialize", null);
        support.records
                .assertRecord("validatePendingAdd", child, Boolean.FALSE);
        support.records.assertEndOfRecords();
        assertNull(l1.lastEvent);
        assertNull(l2.lastEvent);
        assertNull(l3.lastEvent);


        assertNull(child.getBeanContext());
    }

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    public void testGetBeanContextPeer() {
        // covered by testConstructor
    }


    public void testGetChildBeanContextChild_NullParam() {
        BeanContextChild result = MockBeanContextSupport
                .publicGetChildBeanContextChild(null);
        assertNull(result);
    }

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        assertNull(result);
    }


    public void testGetChildBeanContextChild_BeanContextChild() {
        MockBeanContextChild child = new MockBeanContextChild();
        BeanContextChild result = MockBeanContextSupport
                .publicGetChildBeanContextChild(child);
        assertSame(child, result);


        // Regression for HARMONY-1393
        class TestBeanException extends BeanContextChildSupport implements

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