[news.eclipse.platform] Re: treeviewer databinding error

[Tom Schindl <tom.schindl@xxxxxxxxxxxxxxx>]

Could you provide a complete snippet I can runn out of the box?

Tom

hao schrieb:
> I tried a treeviewer jface databinding but got some error. Could someone 
> tell me what causes the error. Here are the error I got:
> org.eclipse.core.databinding - 4 - cannot get value
> java.lang.IllegalArgumentException
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) 
>
>     at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
>
>     at java.lang.reflect.Method.invoke(Method.java:615)
>     at 
> org.eclipse.core.internal.databinding.beans.JavaBeanObservableMap.doGet(JavaBeanObservableMap.java:105) 
>
>     at 
> org.eclipse.core.databinding.observable.map.ComputedObservableMap$1.handleSetChange(ComputedObservableMap.java:52) 
>
>     at 
> org.eclipse.core.databinding.observable.set.SetChangeEvent.dispatch(SetChangeEvent.java:61) 
>
>     at 
> org.eclipse.core.databinding.observable.ChangeManager.fireEvent(ChangeManager.java:129) 
>
>     at 
> org.eclipse.core.databinding.observable.set.ObservableSet.fireSetChange(ObservableSet.java:67) 
>
>     at 
> org.eclipse.core.internal.databinding.observable.UnmodifiableObservableSet.access$0(UnmodifiableObservableSet.java:1) 
>
>     at 
> org.eclipse.core.internal.databinding.observable.UnmodifiableObservableSet$1.handleSetChange(UnmodifiableObservableSet.java:30) 
>
>     at 
> org.eclipse.core.databinding.observable.set.SetChangeEvent.dispatch(SetChangeEvent.java:61) 
>
>     at 
> org.eclipse.core.databinding.observable.ChangeManager.fireEvent(ChangeManager.java:129) 
>
>     at 
> org.eclipse.core.databinding.observable.set.ObservableSet.fireSetChange(ObservableSet.java:67) 
>
>     at 
> org.eclipse.core.internal.databinding.observable.masterdetail.DetailObservableSet.access$1(DetailObservableSet.java:1) 
>
>     at 
> org.eclipse.core.internal.databinding.observable.masterdetail.DetailObservableSet$1.handleSetChange(DetailObservableSet.java:42) 
>
>     at 
> org.eclipse.core.databinding.observable.set.SetChangeEvent.dispatch(SetChangeEvent.java:61) 
>
>     at 
> org.eclipse.core.databinding.observable.ChangeManager.fireEvent(ChangeManager.java:129) 
>
>     at 
> org.eclipse.core.databinding.observable.set.ObservableSet.fireSetChange(ObservableSet.java:67) 
>
>     at 
> org.eclipse.core.databinding.observable.set.WritableSet.add(WritableSet.java:90) 
>
>     at 
> org.eclipse.core.internal.databinding.observable.masterdetail.DetailObservableSet.add(DetailObservableSet.java:106) 
>
>     at 
> org.eclipse.jface.internal.databinding.viewers.ObservableCollectionTreeContentProvider$TreeNode.<init>(ObservableCollectionTreeContentProvider.java:284) 
>
>     at 
> org.eclipse.jface.internal.databinding.viewers.ObservableCollectionTreeContentProvider.getOrCreateNode(ObservableCollectionTreeContentProvider.java:181) 
>
>     at 
> org.eclipse.jface.internal.databinding.viewers.ObservableCollectionTreeContentProvider.getChildren(ObservableCollectionTreeContentProvider.java:162) 
>
>     at 
> org.eclipse.jface.internal.databinding.viewers.ObservableCollectionTreeContentProvider.getElements(ObservableCollectionTreeContentProvider.java:158) 
>
>     at 
> org.eclipse.jface.databinding.viewers.ObservableListTreeContentProvider.getElements(ObservableListTreeContentProvider.java:155) 
>
>     at 
> org.eclipse.jface.viewers.StructuredViewer.getRawChildren(StructuredViewer.java:937) 
>
>     at 
> org.eclipse.jface.viewers.ColumnViewer.getRawChildren(ColumnViewer.java:703) 
>
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer.getRawChildren(AbstractTreeViewer.java:1330) 
>
>     at 
> org.eclipse.jface.viewers.TreeViewer.getRawChildren(TreeViewer.java:385)
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer.getFilteredChildren(AbstractTreeViewer.java:636) 
>
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer.getSortedChildren(AbstractTreeViewer.java:602) 
>
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractTreeViewer.java:799) 
>
>     at 
> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:776) 
>
>     at 
> org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:634)
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer.internalInitializeTree(AbstractTreeViewer.java:1490) 
>
>     at 
> org.eclipse.jface.viewers.TreeViewer.internalInitializeTree(TreeViewer.java:823) 
>
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer$5.run(AbstractTreeViewer.java:1474) 
>
>     at 
> org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1365) 
>
>     at 
> org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:397) 
>
>     at 
> org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1328) 
>
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(AbstractTreeViewer.java:1467) 
>
>     at 
> org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:251)
>     at 
> org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1603) 
>
>     at 
> com.discover.plugin.phonebook.treeviewer.v34.PhoneBookUsingTreeViewer.initDataBindings(PhoneBookUsingTreeViewer.java:313) 
>
>     at 
> com.discover.plugin.phonebook.treeviewer.v34.PhoneBookUsingTreeViewer.createContents(PhoneBookUsingTreeViewer.java:283) 
>
>     at 
> com.discover.plugin.phonebook.treeviewer.v34.PhoneBookUsingTreeViewer.open(PhoneBookUsingTreeViewer.java:161) 
>
>     at 
> com.discover.plugin.phonebook.treeviewer.v34.PhoneBookUsingTreeViewer$1.run(PhoneBookUsingTreeViewer.java:147) 
>
>     at 
> org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288) 
>
>     at 
> com.discover.plugin.phonebook.treeviewer.v34.PhoneBookUsingTreeViewer.main(PhoneBookUsingTreeViewer.java:142) 
>
> java.lang.RuntimeException: java.lang.IllegalArgumentException
>     at 
> org.eclipse.core.internal.databinding.beans.JavaBeanObservableMap.doGet(JavaBeanObservableMap.java:110) 
>
>     at 
> org.eclipse.core.databinding.observable.map.ComputedObservableMap$1.handleSetChange(ComputedObservableMap.java:52) 
>
>     at 
> org.eclipse.core.databinding.observable.set.SetChangeEvent.dispatch(SetChangeEvent.java:61) 
>
>     at 
> org.eclipse.core.databinding.observable.ChangeManager.fireEvent(ChangeManager.java:129) 
>
>     at 
> org.eclipse.core.databinding.observable.set.ObservableSet.fireSetChange(ObservableSet.java:67) 
>
>     at 
> org.eclipse.core.internal.databinding.observable.UnmodifiableObservableSet.access$0(UnmodifiableObservableSet.java:1) 
>
>     at 
> org.eclipse.core.internal.databinding.observable.UnmodifiableObservableSet$1.handleSetChange(UnmodifiableObservableSet.java:30) 
>
>     at 
> org.eclipse.core.databinding.observable.set.SetChangeEvent.dispatch(SetChangeEvent.java:61) 
>
>     at 
> org.eclipse.core.databinding.observable.ChangeManager.fireEvent(ChangeManager.java:129) 
>
>     at 
> org.eclipse.core.databinding.observable.set.ObservableSet.fireSetChange(ObservableSet.java:67) 
>
>     at 
> org.eclipse.core.internal.databinding.observable.masterdetail.DetailObservableSet.access$1(DetailObservableSet.java:1) 
>
>     at 
> org.eclipse.core.internal.databinding.observable.masterdetail.DetailObservableSet$1.handleSetChange(DetailObservableSet.java:42) 
>
>     at 
> org.eclipse.core.databinding.observable.set.SetChangeEvent.dispatch(SetChangeEvent.java:61) 
>
>     at 
> org.eclipse.core.databinding.observable.ChangeManager.fireEvent(ChangeManager.java:129) 
>
>     at 
> org.eclipse.core.databinding.observable.set.ObservableSet.fireSetChange(ObservableSet.java:67) 
>
>     at 
> org.eclipse.core.databinding.observable.set.WritableSet.add(WritableSet.java:90) 
>
>     at 
> org.eclipse.core.internal.databinding.observable.masterdetail.DetailObservableSet.add(DetailObservableSet.java:106) 
>
>     at 
> org.eclipse.jface.internal.databinding.viewers.ObservableCollectionTreeContentProvider$TreeNode.<init>(ObservableCollectionTreeContentProvider.java:284) 
>
>     at 
> org.eclipse.jface.internal.databinding.viewers.ObservableCollectionTreeContentProvider.getOrCreateNode(ObservableCollectionTreeContentProvider.java:181) 
>
>     at 
> org.eclipse.jface.internal.databinding.viewers.ObservableCollectionTreeContentProvider.getChildren(ObservableCollectionTreeContentProvider.java:162) 
>
>     at 
> org.eclipse.jface.internal.databinding.viewers.ObservableCollectionTreeContentProvider.getElements(ObservableCollectionTreeContentProvider.java:158) 
>
>     at 
> org.eclipse.jface.databinding.viewers.ObservableListTreeContentProvider.getElements(ObservableListTreeContentProvider.java:155) 
>
>     at 
> org.eclipse.jface.viewers.StructuredViewer.getRawChildren(StructuredViewer.java:937) 
>
>     at 
> org.eclipse.jface.viewers.ColumnViewer.getRawChildren(ColumnViewer.java:703) 
>
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer.getRawChildren(AbstractTreeViewer.java:1330) 
>
>     at 
> org.eclipse.jface.viewers.TreeViewer.getRawChildren(TreeViewer.java:385)
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer.getFilteredChildren(AbstractTreeViewer.java:636) 
>
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer.getSortedChildren(AbstractTreeViewer.java:602) 
>
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer$1.run(AbstractTreeViewer.java:799) 
>
>     at 
> org.eclipse.swt.custom.BusyIndicator.showWhile(BusyIndicator.java:67)
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer.createChildren(AbstractTreeViewer.java:776) 
>
>     at 
> org.eclipse.jface.viewers.TreeViewer.createChildren(TreeViewer.java:634)
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer.internalInitializeTree(AbstractTreeViewer.java:1490) 
>
>     at 
> org.eclipse.jface.viewers.TreeViewer.internalInitializeTree(TreeViewer.java:823) 
>
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer$5.run(AbstractTreeViewer.java:1474) 
>
>     at 
> org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1365) 
>
>     at 
> org.eclipse.jface.viewers.TreeViewer.preservingSelection(TreeViewer.java:397) 
>
>     at 
> org.eclipse.jface.viewers.StructuredViewer.preservingSelection(StructuredViewer.java:1328) 
>
>     at 
> org.eclipse.jface.viewers.AbstractTreeViewer.inputChanged(AbstractTreeViewer.java:1467) 
>
>     at 
> org.eclipse.jface.viewers.ContentViewer.setInput(ContentViewer.java:251)
>     at 
> org.eclipse.jface.viewers.StructuredViewer.setInput(StructuredViewer.java:1603) 
>
>     at 
> com.discover.plugin.phonebook.treeviewer.v34.PhoneBookUsingTreeViewer.initDataBindings(PhoneBookUsingTreeViewer.java:313) 
>
>     at 
> com.discover.plugin.phonebook.treeviewer.v34.PhoneBookUsingTreeViewer.createContents(PhoneBookUsingTreeViewer.java:283) 
>
>     at 
> com.discover.plugin.phonebook.treeviewer.v34.PhoneBookUsingTreeViewer.open(PhoneBookUsingTreeViewer.java:161) 
>
>     at 
> com.discover.plugin.phonebook.treeviewer.v34.PhoneBookUsingTreeViewer$1.run(PhoneBookUsingTreeViewer.java:147) 
>
>     at 
> org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:288) 
>
>     at 
> com.discover.plugin.phonebook.treeviewer.v34.PhoneBookUsingTreeViewer.main(PhoneBookUsingTreeViewer.java:142) 
>
> Caused by: java.lang.IllegalArgumentException
>     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
>     at 
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) 
>
>     at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
>
>     at java.lang.reflect.Method.invoke(Method.java:615)
>     at 
> org.eclipse.core.internal.databinding.beans.JavaBeanObservableMap.doGet(JavaBeanObservableMap.java:105) 
>
>     ... 46 more
>
> Here's the binding code
>     private PersonGroups m_groups = new PersonGroups();
>     private TreeViewer m_personViewer;
>
>         ObservableListTreeContentProvider contentProvider =             
> new ObservableListTreeContentProvider(
>                 BeansObservables.listFactory(Realm.getDefault(), "groups",
>                         PersonGroups.class), null);
>         m_personViewer.setContentProvider(contentProvider);
>        
>         IObservableMap[] m_personViewerLabelProviderMaps = 
> BeansObservables.observeMaps(contentProvider.getKnownElements(),
>                 PersonGroup.class, new String[]{"persons"});
>         m_personViewer.setLabelProvider(new 
> ObservableMapLabelProvider(m_personViewerLabelProviderMaps));
>
>         //IObservableList m_groupsGroupsObserveList =             
> //BeansObservables.observeList(Realm.getDefault(), m_groups, "groups");
>                
>         m_personViewer.setInput(m_groups);
> ..
> public class PersonGroups extends AbstractModelObject {
>     private final List/* <PersonGroup> */m_groups = new ArrayList();
>
>     public void addGroup(PersonGroup group) {
>         m_groups.add(group);
>         firePropertyChange("groups", null, m_groups);
>     }
>
>     public void removeGroup(PersonGroup group) {
>         m_groups.remove(group);
>         firePropertyChange("groups", null, m_groups);
>     }
>
>     public List getGroups() {
>         return m_groups;
>     }
>
>     @Override
>     public String toString() {
>         String RL = System.getProperty("line.separator");
>         StringBuilder strBuf = new StringBuilder();
>         strBuf.append("Person Groups");
>         strBuf.append(RL);
>         for(Iterator it= m_groups.iterator(); it.hasNext();  ){
>             strBuf.append(it.next());
>             strBuf.append(RL);
>         }
>         return strBuf.toString();
>     }
>     
> }
>
> public class PersonGroup extends AbstractModelObject {
>     private final List/* <Person> */m_persons = new ArrayList();
>     private String m_name;
>
>     public PersonGroup() {
>     }
>
>     public PersonGroup(String name) {
>         m_name = name;
>     }
>
>     public String getName() {
>         return m_name;
>     }
>
>     public void setName(String name) {
>         String oldValue = m_name;
>         m_name = name;
>         firePropertyChange("name", oldValue, m_name);
>     }
>
>     public void addPerson(Person person) {
>         m_persons.add(person);
>         firePropertyChange("persons", null, m_persons);
>     }
>
>     public void removePerson(Person person) {
>         m_persons.remove(person);
>         firePropertyChange("persons", null, m_persons);
>     }
>
>     public List getPersons() {
>         return m_persons;
>     }
>
>     public String getEmail() {
>         return "";
>     }
>
>     public void setEmail(String email) {
>     }
>
>     public String getPhone() {
>         return "";
>     }
>
>     public void setPhone(String phone) {
>     }
>
>     public String getMobilePhone1() {
>         return "";
>     }
>
>     public void setMobilePhone1(String phone1) {
>     }
>
>     public String getMobilePhone2() {
>         return "";
>     }
>
>     public void setMobilePhone2(String phone2) {
>     }
>
>     
>     @Override
>     public String toString() {
>         String RL = System.getProperty("line.separator");
>         StringBuilder strBuf = new StringBuilder();
>         strBuf.append("Person Group - ");
>         strBuf.append(m_name);
>         strBuf.append(RL);
>         for(Iterator it= m_persons.iterator(); it.hasNext();  ){
>             strBuf.append(it.next());
>             strBuf.append(RL);
>         }
>         return strBuf.toString();
>     }
>     
> }
>
> public class Person extends AbstractModelObject {
>     private String m_name = "";
>     private String m_email = "";
>     private String m_phone = "";
>     private String m_mobilePhone1 = "";
>     private String m_mobilePhone2 = "";
>
>     public Person() {
>     }
>
>     public Person(String name, String email, String phone, String phone1,
>             String phone2) {
>         m_name = name;
>         m_email = email;
>         m_phone = phone;
>         m_mobilePhone1 = phone1;
>         m_mobilePhone2 = phone2;
>     }
>
>     public String getName() {
>         return m_name;
>     }
>
>     public void setName(String name) {
>         String oldValue = m_name;
>         m_name = name;
>         firePropertyChange("name", oldValue, m_name);
>     }
>
>     public String getEmail() {
>         return m_email;
>     }
>
>     public void setEmail(String email) {
>         String oldValue = m_email;
>         m_email = email;
>         firePropertyChange("email", oldValue, m_email);
>     }
>
>     public String getPhone() {
>         return m_phone;
>     }
>
>     public void setPhone(String phone) {
>         String oldValue = m_phone;
>         m_phone = phone;
>         firePropertyChange("phone", oldValue, m_phone);
>     }
>
>     public String getMobilePhone1() {
>         return m_mobilePhone1;
>     }
>
>     public void setMobilePhone1(String phone1) {
>         String oldValue = m_mobilePhone1;
>         m_mobilePhone1 = phone1;
>         firePropertyChange("mobilePhone1", oldValue, m_mobilePhone1);
>     }
>
>     public String getMobilePhone2() {
>         return m_mobilePhone2;
>     }
>
>     public void setMobilePhone2(String phone2) {
>         String oldValue = m_mobilePhone2;
>         m_mobilePhone2 = phone2;
>         firePropertyChange("mobilePhone2", oldValue, m_mobilePhone2);
>     }
>
>     @Override
>     public String toString() {
>         StringBuilder strBuf = new StringBuilder();
>         strBuf.append("name=");
>         strBuf.append(m_name);
>         strBuf.append(";");
>         strBuf.append("email=");
>         strBuf.append(m_email);
>         strBuf.append(";");
>         strBuf.append("phone=");
>         strBuf.append(m_phone);
>         strBuf.append(";");
>         strBuf.append("mobilePhone1=");
>         strBuf.append(m_mobilePhone1);
>         strBuf.append(";");
>         strBuf.append("mobilePhone2=");
>         strBuf.append(m_mobilePhone2);
>         return strBuf.toString();
>     }
>     
> }


--
B e s t S o l u t i o n . at
--------------------------------------------------------------------
Tom Schindl                                          JFace-Committer
--------------------------------------------------------------------