Could anyone explain me one thing? Is it possible to use Vaadin TreeTable with LazyQueryContainer? I've alredy tried but it doesn't work. Actually, there is no any lazy loading. The method loadItems of org.vaadin.addons.lazyquerycontainer.Query is called until all data are loaded. For instanse, if batch size for the container = 100 and I have 500 rows then this method will be called 5 times. Here is my code:
public class LazyHierarchicalQueryContainer extends LazyQueryContainer implements Container.Hierarchical {
private String parentProperty = "parent";
public LazyHierarchicalQueryContainer(QueryFactory queryFactory, Object idPropertyId, int batchSize,
boolean compositeItems) {
super(queryFactory, idPropertyId, batchSize, compositeItems);
}
public LazyHierarchicalQueryContainer(QueryDefinition queryDefinition, QueryFactory queryFactory) {
super(queryDefinition, queryFactory);
}
public LazyHierarchicalQueryContainer(QueryView queryView) {
super(queryView);
}
public String getParentProperty() {
return parentProperty;
}
public void setParentProperty(String parentProperty) {
this.parentProperty = parentProperty;
}
#Override
public Collection<?> getChildren(Object itemId) {
return Collections.emptyList();
}
#Override
public Object getParent(Object itemId) {
return null;
}
#Override
public Collection<?> rootItemIds() {
ArrayList arrayList = new ArrayList();
for (Object workItem : getItemIds()) {
if (isRoot(workItem)) {
arrayList.add(workItem);
}
}
return arrayList;
}
#Override
public boolean setParent(Object itemId, Object newParentId) throws UnsupportedOperationException {
if (getItem(newParentId) != null) {
getItem(itemId).getItemProperty(getParentProperty()).setValue(newParentId);
} else {
getItem(itemId).getItemProperty(getParentProperty()).setValue(null);
}
return true;
}
#Override
public boolean areChildrenAllowed(Object itemId) {
return true;
}
#Override
public boolean setChildrenAllowed(Object itemId, boolean areChildrenAllowed) throws UnsupportedOperationException {
return false;
}
#Override
public boolean isRoot(Object itemId) {
return getItem(itemId).getItemProperty(parentProperty).getValue() == null;
}
#Override
public boolean hasChildren(Object itemId) {
return false;
}
}
Thanks in advance.
It seems your implementation of rootItemIds() loads all items to filter out the root items. This may cause the whole container to be read in the first go.
Related
My search view is working properly but I am trying to do a search such that all the "visible" search letters should be highlighted. I used the filter interface in my adapter for filtering data.
here is my adapter Class
public class myAdapter extends RecyclerView.Adapter<myAdapter.viewHolder> implements Filterable {
private List<Model> model;
// for search filtering
private ArrayList<Model> modelFull;
Context context;
public myAdapter(ArrayList<Model> model, Context context) {
this.model = model;
modelFull =new ArrayList<>(model);
this.context = context;
}
#NonNull
#Override
public viewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.template, parent, false);
return new viewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull viewHolder holder, int position) {
Model forPosition = model.get(position);
holder.image.setImageResource(forPosition.getImage());
holder.intro.setText(forPosition.getIntro());
}
#Override
public int getItemCount() {
return model.size();
}
public class viewHolder extends RecyclerView.ViewHolder {
TextView intro;
ImageView image;
public viewHolder(#NonNull View itemView) {
super(itemView);
intro= itemView.findViewById(R.id.introTxt);
image = itemView.findViewById(R.id.image);
}
}
#Override
public Filter getFilter() {
return generalFilter;
}
private Filter generalFilter =new Filter() {
#Override
protected FilterResults performFiltering(CharSequence constraint) {
List<Model> filteredModel =new ArrayList<>();
if(constraint ==null || constraint.length()==0) {
filteredModel.addAll(modelFull);
}
else {
String searchQuery= constraint.toString().toLowerCase().trim();
for(blogBigModel item : modelFull){
if(item.getBlogIntro().toLowerCase().contains(searchQuery)){
filteredModel.add(item);
}
}
}
FilterResults results =new FilterResults();
results.values = filteredModel;
return results;
}
#Override
protected void publishResults(CharSequence constraint, FilterResults results) {
model.clear();
model.addAll((List)results.values);
notifyDataSetChanged();
}
};
}
that's my class / Fragment where i used the above adapter
[what should i add to get the desired highlighted query when i search in the search bar like Whatsapp][1]
[1]: https://i.stack.imgur.com/Fdu2r.jpg
toolbar.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener() {
#Override
public boolean onMenuItemClick(MenuItem item) {
switch (item.getItemId()) {
case R.id.ic_home_search:enter code here
SearchView searchView = (SearchView) item.getActionView();
searchView.setQueryHint("Search....");
searchView.setImeOptions(EditorInfo.IME_ACTION_DONE);
searchView.setBackground(getResources().getDrawable(R.drawable.searchview_bg));
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
return false;
}
#Override
public boolean onQueryTextChange(String newText) {
adapter.getFilter().filter(newText);
return false;
}
});
}
}
return true;
});
I have a AutoCompleteTextView that I give it 2 different adapters depending on the amount of text that is being present at the textview - if it has 0 characters I want it to display a list of "recently searched" strings adapter, while if it has more than 1 characters I want it to display auto completion list.
My getRecentlySearchedQueries method along with the RecentSearchedViewModel-
private List<String> recentlySearchedQueries = new ArrayList<>(); // pasted from the top of the class
#Override
public void getRecentlySearchedQueries() {
recentSearchViewModel.getAllQueries().observe(getActivity(), databaseRecentlySearchList -> {
if (databaseRecentlySearchList == null) {
return;
}
for (int i = 0; i < databaseRecentlySearchList.size(); i++) {
Log.d("localDBValue", "Added value - " + databaseRecentlySearchList.get(i).toString() + "\n");
String query = databaseRecentlySearchList.get(i).getQuery();
recentlySearchedQueries.add(query);
}
//Log.d("localDBValue", "recent search list value - " + recentlySearchedQueries);
});
}
public class RecentSearchViewModel extends AndroidViewModel {
private RecentSearchRepository recentSearchRepository;
private LiveData<List<RecentSearchModel>> allRecentlySearched;
public RecentSearchViewModel(#NonNull Application application) {
super(application);
recentSearchRepository = new RecentSearchRepository(application);
allRecentlySearched = recentSearchRepository.getAllRecentSearches();
}
public void insert(RecentSearchModel model) {
recentSearchRepository.insert(model);
}
public void update(RecentSearchModel model) {
// add implementation in the future if needed
}
public void delete(RecentSearchModel model) {
// add implementation in the future if needed
}
public LiveData<List<RecentSearchModel>> getAllQueries() {
return allRecentlySearched;
}
}
public class RecentSearchRepository {
private RecentSearchDao recentSearchDao;
private LiveData<List<RecentSearchModel>> allRecentSearches;
public RecentSearchRepository(Application application) {
MarketplaceDatabase database = MarketplaceDatabase.getRecentSearchInstance(application);
recentSearchDao = database.recentSearchDao();
allRecentSearches = recentSearchDao.getRecentSearchList();
}
public void insert(RecentSearchModel model) {
new RecentSearchRepository.InsertRecentSearchAsyncTask(recentSearchDao).execute(model);
}
public void update (RecentSearchModel model) {
//TODO - implement in future if needed
}
public void delete(RecentSearchModel model) {
//TODO - implement in future if needed
}
public LiveData<List<RecentSearchModel>> getAllRecentSearches() {
return allRecentSearches;
}
private static class InsertRecentSearchAsyncTask extends AsyncTask<RecentSearchModel, Void, Void> {
private RecentSearchDao recentSearchDao;
public InsertRecentSearchAsyncTask(RecentSearchDao recentSearchDao) {
this.recentSearchDao = recentSearchDao;
}
#Override
protected Void doInBackground(RecentSearchModel... recentSearchModels) {
recentSearchDao.insert(recentSearchModels[0]);
return null;
}
}
private static class UpdateRecentSearchAsyncTask extends AsyncTask<RecentSearchModel, Void, Void> {
private RecentSearchDao recentSearchDao;
public UpdateRecentSearchAsyncTask(RecentSearchDao recentSearchDao) {
this.recentSearchDao = recentSearchDao;
}
#Override
protected Void doInBackground(RecentSearchModel... recentSearchModels) {
recentSearchDao.update(recentSearchModels[0]);
return null;
}
}
}
#Dao
public interface RecentSearchDao {
#Insert()
void insert(RecentSearchModel model);
#Update
void update(RecentSearchModel model);
#Delete
void delete(RecentSearchModel model);
#Query("select * from recent_search_table")
LiveData<List<RecentSearchModel>> getRecentSearchList();
}
#Entity(tableName = "recent_search_table")
public class RecentSearchModel {
#PrimaryKey(autoGenerate = true)
private int ID;
private String query;
public RecentSearchModel(){
}
public RecentSearchModel(String query) {
this.query = query;
}
public void setID(int ID) {
this.ID = ID;
}
public int getID() {
return ID;
}
public String getQuery() {
return query;
}
public void setQuery(String query) {
this.query = query;
}
#Override
public String toString() {
return "RecentSearchModel{" +
"query='" + query + '\'' +
'}';
}
#Override
public boolean equals(#Nullable Object obj) {
if (obj instanceof RecentSearchModel)
return this.query.equalsIgnoreCase(((RecentSearchModel) obj).query);
return false;
}
}
So, what I am doing here is for start getting all values inside my local DB and adding them to my String list that is part of the adapter. So far so good.
The issue I am facing is that the adapter won't show the amount of strings available in the list that populates it. In fact, it sometimes shows a view half-cut with wierd information, sometimes does not show anything and sometimes shows part of the corrent information. What am I missing?
Another thing I am facing is that the "recently searched" adapter won't work when clicking on the AutoCompleteTextView - it only works when typing and deleting values so the char length is 0. How can I make it work from start of focus?
Here is the way I am populating the information to the ViewModel -
/**
* Shows the searched products following
*/
#Override
public void getSearchedProducts(String searchedQuery) {
MarketplaceUtils.getSearchedProducts(searchedQuery, marketApiCalls, false, initialSearchTake, initialMarketplacePage, new MarketplaceUtils.OnProductsFetchCompleteListener() {
#Override
public void onSuccess(List<MiniProductModel> list) {
if (!searchedQuery.equals(currentSearchedText))
return;
if (list == null) {
//reaching here means we do not have a result to show to the UI so we empty the list.
currentProductList.clear();
productsAdapter.notifyDataSetChanged();
return;
}
if (searchedQuery.length() > 3 && searchAutoCompleteStrings.contains(searchedQuery)) {
Log.d("localDBValue", "searchedValue - " + searchedQuery);
recentSearchViewModel.insert(new RecentSearchModel(searchedQuery));
}
mPresenter.setDiscoverProductsLayoutVisibility(View.GONE);
currentProductList.clear();
currentProductList.addAll(list);
productsAdapter.notifyDataSetChanged();
}
#Override
public void onError(Throwable throwable) {
Log.d("searchedProducts", throwable.getMessage());
}
});
}
The default behaviour for #Insert method of Room is OnConflictStrategy.ABORT - so what I did is to implement equals() method to verify that the RecentSearchModels that are being compared are compared by their string value. Still does seems to effect anything.
i'm using spring-boot-starter-data-elasticsearch (1.4.0.M3).
I'm unable to get the version (_version in elasticsearch query result) of a document using the annoation "version".
Any idea why the annotation isn't working ?
f.e.:
#GwtCompatible
#Document(indexName = "myIndexName")
public class Catalog implements Serializable {
private List<GroupProduct> groups;
#Id
private String uuid;
#Version
private Long version;
#Field(type = FieldType.Nested)
private List<Product> products;
private String label;
#NotEmpty
private String organizationUuid;
private List<String> organizationUnitUuids;
private Date updateDate;
private List<VAT> vats;
public Catalog() {
}
public List<GroupProduct> getGroups() {
return groups;
}
public List<Product> getProducts() {
return products;
}
public Date getUpdateDate() {
return updateDate;
}
public void setGroups(List<GroupProduct> groups) {
this.groups = groups;
}
public void setProducts(List<Product> products) {
this.products = products;
}
public void setUpdateDate(Date updateDate) {
this.updateDate = updateDate;
}
public List<VAT> getVats() {
return vats;
}
public void setVats(List<VAT> vats) {
this.vats = vats;
}
public String getUuid() {
return uuid;
}
public void setUuid(String uuid) {
this.uuid = uuid;
}
public String getOrganizationUuid() {
return organizationUuid;
}
public void setOrganizationUuid(String organizationUuid) {
this.organizationUuid = organizationUuid;
}
public String getLabel() {
return label;
}
public void setLabel(String label) {
this.label = label;
}
public List<String> getOrganizationUnitUuids() {
return organizationUnitUuids;
}
public void setOrganizationUnitUuids(List<String> organizationUnitUuids) {
this.organizationUnitUuids = organizationUnitUuids;
}
public Long getVersion() {
return version;
}
public void setVersion(Long version) {
this.version = version;
}
}
Spring Data Elasticsearch (as of version 2.0.2) seems to have only partial support for the #Version annotation. If you annotate a document with a version field, it will be used when indexing a document. It will tell Elasticsearch that the document being saved is that specified version. If the new version is less than or equal to the version of the current document, Elasticsearch will throw a VersionConflictEngineException.
Unfortunately, Spring does not appear to populate this version field when a document is retrieved. As far as I can tell, this makes the version annotation useless. Perhaps the project will add this support in the near future. In the meantime, I have found a workaround by extending the default ResultMapper that Spring uses:
public class ExtendedResultMapper extends DefaultResultMapper {
protected MappingContext<? extends ElasticsearchPersistentEntity<?>, ElasticsearchPersistentProperty> mappingContext;
public ExtendedResultMapper(MappingContext<? extends ElasticsearchPersistentEntity<?>, ElasticsearchPersistentProperty> mappingContext) {
super(mappingContext);
this.mappingContext = mappingContext;
}
#Override
public <T> T mapResult(GetResponse response, Class<T> clazz) {
T result = super.mapResult(response, clazz);
if (result != null) {
setPersistentEntityVersion(result, response.getVersion(), clazz);
}
return result;
}
#Override
public <T> LinkedList<T> mapResults(MultiGetResponse responses, Class<T> clazz) {
LinkedList<T> results = super.mapResults(responses, clazz);
if (results != null) {
for (int i = 0; i < results.size(); i++) {
setPersistentEntityVersion(results.get(i), responses.getResponses()[i].getResponse().getVersion(), clazz);
}
}
return results;
}
private <T> void setPersistentEntityVersion(T result, Long version, Class<T> clazz) {
if (mappingContext != null && clazz.isAnnotationPresent(Document.class)) {
PersistentProperty<ElasticsearchPersistentProperty> versionProperty = mappingContext.getPersistentEntity(clazz).getVersionProperty();
if (versionProperty != null && versionProperty.getType().isAssignableFrom(Long.class)) {
Method setter = versionProperty.getSetter();
if (setter != null) {
try {
setter.invoke(result, version);
} catch (Throwable t) {
t.printStackTrace();
}
}
}
}
}
}
You can tell Spring to use this version instead of the default mapper as follows:
#Autowired
private Client client;
#Bean
public ElasticsearchTemplate elasticsearchTemplate() {
MappingElasticsearchConverter converter = new MappingElasticsearchConverter(new SimpleElasticsearchMappingContext());
ExtendedResultMapper mapper = new ExtendedResultMapper(converter.getMappingContext());
return new ElasticsearchTemplate(client, converter, mapper);
}
Note that the version is only populated for Get or Multi-Get requests. Search results do not include version information.
You could also use this same approach to extract other information from the GetResponse objects.
Using this code, if you get a document and then try to save it back, it will fail unless you increment the version.
I was trying to map ResultSet data to an object and returning it. Here is how i'm mapping data to an object. Now i'm having only 7 columns in resultset so this is working fine but what if i'm having 20 or 30 columns. How can i map dynamically those columns.
public class ProductsWrapperMapper implements ResultSetMapper<ProductsWrapper> {
public ProductsWrapper map(int i, ResultSet resultSet,
StatementContext statementContext) throws SQLException {
ProductsWrapper product = new ProductsWrapper();
if ((isColumnPresent(resultSet,"a_productid"))) {
product.setId(resultSet.getInt("a_productid"));
}
if ((isColumnPresent(resultSet,"a_productname"))) {
product.setProductName(resultSet.getString("a_productname"));
}
if ((isColumnPresent(resultSet,"a_productlink"))) {
product.setLink(resultSet.getString("a_productlink"));
}
if ((isColumnPresent(resultSet,"a_productimagelink"))) {
product.setImageLink(resultSet.getString("a_productimagelink"));
}
if ((isColumnPresent(resultSet,"a_websiteid"))) {
product.setWebsiteId(resultSet.getInt("a_websiteid"));
}
if ((isColumnPresent(resultSet,"a_productidentification"))) {
product.setProductIdentification(resultSet
.getString("a_productidentification"));
}
if ((isColumnPresent(resultSet,"a_adddate"))) {
product.setAddDate(resultSet.getString("a_adddate"));
}
return product;
}
public boolean isColumnPresent(ResultSet resultSet,String column) {
try {
#SuppressWarnings("unused")
int index = resultSet.findColumn(column);
return true;
} catch (SQLException e) {
// TODO Auto-generated catch block
return false;
}
}
}
Below one is my class which i was returning the object from mapper class above.
#JsonInclude(Include.NON_NULL)
public class ProductsWrapper {
private int id;
private String productName;
private String link;
private String imageLink;
private int websiteId;
private String productIdentification;
private String addDate;
int getWebsiteId() {
return websiteId;
}
public void setWebsiteId(int websiteId) {
this.websiteId = websiteId;
}
public String getProductIdentification() {
return productIdentification;
}
public void setProductIdentification(String productIdentification) {
this.productIdentification = productIdentification;
}
public String getAddDate() {
return addDate;
}
public void setAddDate(String addDate) {
this.addDate = addDate;
}`enter code here`
public ProductsWrapper(int id) {
this.setId(id);
}
public String getProductName() {
return productName;
}
public void setProductName(String productName) {
this.productName = productName;
}
public String getLink() {
return link;
}
public void setLink(String link) {
this.link = link;
}
public String getImageLink() {
return imageLink;
}
public void setImageLink(String imageLink) {
this.imageLink = imageLink;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
}
You can also try Jdbi-folder. It automatically takes care of dynamic bynding and also it provides one to many mapping relationship.
You can add Rosetta as a mapper for your JDBI result sets (it also works for bindings). Have a look at the advanced features to map column names with underscores to snake snake case java names.
Beware that there is no warning message if Rosetta is unable to map a value: any missed property in the target bean will just be empty. I found that my database returned column names in capital letters, therefore the LowerCaseWithUnderscoresStrategy in the example didn't work for me. I created a UpperCaseWithUnderscoresStrategy.
To skip writing getters and setters in ProductsWrapper have a look at Lombok's #Data annotation.
#FacesValidator("uniqueValidator")
public class UniqueValidator implements Validator
{
#Override
public void validate(FacesContext context, UIComponent component, Object value) throws ValidatorException
{
if(context == null)
{
throw new NullPointerException();
}
if(component == null)
{
throw new NullPointerException();
}
ValueExpression valueExpression = component.getValueExpression("value");
if(valueExpression == null)
{
return;
}
ValueReference valueReference = valueExpression.getValueReference(context.getELContext());
if(valueReference == null)
{
return;
}
Object base = valueReference.getBase();
Object property = valueReference.getProperty();
Tracer.out(base, property);
.....
}
}
and ValueReference is always null.
what's wrong?
thank you BeanValidator :)
public class ValueExpressionAnalyzer
{
public static ValueReference getReference(ELContext elContext, ValueExpression expression)
{
InterceptingResolver resolver = new InterceptingResolver(elContext.getELResolver());
try
{
expression.setValue(new InterceptingContext(elContext, resolver), null);
}
catch(ELException ele)
{
return null;
}
ValueReference reference = resolver.getValueReference();
if(reference != null)
{
Object base = reference.getBase();
if(base instanceof CompositeComponentExpressionHolder)
{
ValueExpression ve = ((CompositeComponentExpressionHolder) base).getExpression((String) reference.getProperty());
if(ve != null)
{
reference = getReference(elContext, ve);
}
}
}
return reference;
}
private static class InterceptingContext extends ELContext
{
private final ELContext context;
private final ELResolver resolver;
public InterceptingContext(ELContext context, ELResolver resolver)
{
this.context = context;
this.resolver = resolver;
}
// punch in our new ELResolver
#Override
public ELResolver getELResolver()
{
return resolver;
}
// The rest of the methods simply delegate to the existing context
#Override
public Object getContext(Class key)
{
return context.getContext(key);
}
#Override
public Locale getLocale()
{
return context.getLocale();
}
#Override
public boolean isPropertyResolved()
{
return context.isPropertyResolved();
}
#Override
public void putContext(Class key, Object contextObject)
{
context.putContext(key, contextObject);
}
#Override
public void setLocale(Locale locale)
{
context.setLocale(locale);
}
#Override
public void setPropertyResolved(boolean resolved)
{
context.setPropertyResolved(resolved);
}
#Override
public FunctionMapper getFunctionMapper()
{
return context.getFunctionMapper();
}
#Override
public VariableMapper getVariableMapper()
{
return context.getVariableMapper();
}
}
private static class InterceptingResolver extends ELResolver
{
private final ELResolver delegate;
private ValueReference valueReference;
public InterceptingResolver(ELResolver delegate)
{
this.delegate = delegate;
}
public ValueReference getValueReference()
{
return valueReference;
}
// Capture the base and property rather than write the value
#Override
public void setValue(ELContext context, Object base, Object property, Object value)
{
if(base != null && property != null)
{
context.setPropertyResolved(true);
valueReference = new ValueReference(base, property.toString());
}
}
// The rest of the methods simply delegate to the existing context
#Override
public Object getValue(ELContext context, Object base, Object property)
{
return delegate.getValue(context, base, property);
}
#Override
public Class<?> getType(ELContext context, Object base, Object property)
{
return delegate.getType(context, base, property);
}
#Override
public boolean isReadOnly(ELContext context, Object base, Object property)
{
return delegate.isReadOnly(context, base, property);
}
#Override
public Iterator<FeatureDescriptor> getFeatureDescriptors(ELContext context, Object base)
{
return delegate.getFeatureDescriptors(context, base);
}
#Override
public Class<?> getCommonPropertyType(ELContext context, Object base)
{
return delegate.getCommonPropertyType(context, base);
}
}
}
Have a look at Omnifaces ExpressionInspector. Seems in JSF 2.x its not implemented and always returns null.
https://showcase.omnifaces.org/el/ExpressionInspector