Java IDataProvider类代码示例

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
public Workbook generate(IDataProvider<? extends User> dataProvider) {
	Sheet sheet = createSheet(localize(SHEET_NAME_RESOURCE_KEY));
	
	int rowIndex = 0;
	
	// Headers
	addHeadersToSheet(sheet, rowIndex, columns);
	++rowIndex;
	
	// Rows
	Iterator<? extends User> iterator = dataProvider.iterator(0, Integer.MAX_VALUE);
	while (iterator.hasNext()) {
		Row currentRow = sheet.createRow(rowIndex);
		
		populateRow(currentRow, HibernateUtils.unwrap(iterator.next()));
		
		++rowIndex;
	}
	
	finalizeSheet(sheet, columns);
	
	return workbook;
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
private IDataProvider<T> getMetaDataProvider(final Class<T> clazz) {
    return new IDataProvider<T>() {

        @Override
        public Iterator<T> iterator(long first, long count) {
            return service.
                    getAllAscendingByName(clazz, first, count).iterator();
        }

        @Override
        public long size() {
            return service.countAll(clazz);
        }

        @Override
        public IModel<T> model(T object) {
            return Model.of(object);
        }

        @Override
        public void detach() {

        }
    };
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
private IDataProvider<TeamMembership> getMembershipProvider(final Team team) {
	return new IDataProvider<TeamMembership>() {

		@Override
		public Iterator<? extends TeamMembership> iterator(long first, long count) {
			// TODO take into account first and count
			return team.getMembers().iterator();
		}

		@Override
		public long size() {
			return team.getMembers().size();
		}

		@Override
		public IModel<TeamMembership> model(TeamMembership object) {
			return Model.of(object);
		}

		@Override
		public void detach() {

		}
	};
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
private IDataProvider<TeamMembership> getMembershipProvider(final Team team) {
	return new IDataProvider<TeamMembership>() {

		@Override
		public Iterator<? extends TeamMembership> iterator(long first, long count) {
			return team.getMembers().iterator();
		}

		@Override
		public long size() {
			return team.getMembers().size();
		}

		@Override
		public IModel<TeamMembership> model(TeamMembership object) {
			return Model.of(object);
		}

		@Override
		public void detach() {

		}
	};
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
private IDataProvider<ProductInfo> productsProvider() {
    return new IDataProvider<ProductInfo>() {
        @Override
        public Iterator<ProductInfo> iterator(long first, long count) {
            return productListModel.getObject().iterator();
        }

        @Override
        public long size() {
            return productListModel.getObject().size();
        }

        @Override
        public IModel<ProductInfo> model(ProductInfo product) {
            return Model.of(product);
        }

        @Override
        public void detach() {
        }
    };
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
private IDataProvider<ProductInfo> productDataProvider(IModel<List<ProductInfo>> model) {
    return new IDataProvider<ProductInfo>() {
        @Override
        public Iterator<ProductInfo> iterator(long first, long count) {
            return model.getObject().iterator();
        }

        @Override
        public long size() {
            return model.getObject().size();
        }

        @Override
        public IModel<ProductInfo> model(ProductInfo object) {
            return Model.of(object);
        }

        @Override
        public void detach() {
        }
    };
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
private void addDataView(String id, final String className, IDataProvider<ArtifactBean> dataProvider) {
	// Data view
	final DataView<ArtifactBean> artifactDataView = new ArtifactBeanDataView("dataView", dataProvider);
	dataViews.add(artifactDataView);
	
	// Fragment
	Fragment fragment = new Fragment(id, "dataViewFragment", this) {
		private static final long serialVersionUID = 1L;

		@Override
		protected void onConfigure() {
			super.onConfigure();
			setVisible(artifactDataView.getDataProvider().size() != 0);
		}
	};
	fragment.add(new Label("title", new ResourceModel("artifact.follow.pom." + id)),
				artifactDataView);
	add(fragment);
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
public ArtifactSearchResultsPanel(String id, final IDataProvider<ArtifactBean> dataProvider) {
	super(id);
	
	add(new Label("title", new ResourceModel("artifact.follow.search.results.title")));
	
	dataView = new ArtifactBeanDataView("artifacts", dataProvider, configurer.getArtifactSearchItemsPerPage());
	add(
			dataView,
			new HideablePagingNavigator("pager", dataView)
					.add(new EnclosureContainer("pager"))
	);
	
	add(new WebMarkupContainer("emptyList") {
		private static final long serialVersionUID = 6700720373087584498L;

		@Override
		public boolean isVisible() {
			return dataProvider.size() == 0;
		}
	});
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
/**
 * This method is called after select all checkbox is clicked
 * @param target
 * @param selected
 * @param table
 */
protected void onUpdateHeader(AjaxRequestTarget target, boolean selected, DataTable table) {
    IDataProvider provider = table.getDataProvider();
    if (!(provider instanceof BaseSortableDataProvider)) {
        LOGGER.debug("Select all checkbox work only with {} provider type. Current provider is type of {}.",
                new Object[]{BaseSortableDataProvider.class.getName(), provider.getClass().getName()});
    }

    //update selected flag in model dto objects based on select all header state
    BaseSortableDataProvider baseProvider = (BaseSortableDataProvider) provider;
    List<T> objects = baseProvider.getAvailableData();
    for (T object : objects) {
        if (object instanceof Selectable) {
            Selectable selectable = (Selectable) object;
            selectable.setSelected(selected);
        }
    }

    //refresh rows with ajax
    ComponentHierarchyIterator iterator = table.visitChildren(SelectableDataTable.SelectableRowItem.class);
    while (iterator.hasNext()) {
        SelectableDataTable.SelectableRowItem row = (SelectableDataTable.SelectableRowItem) iterator.next();
        if (!row.getOutputMarkupId()) {
            //we skip rows that doesn't have outputMarkupId set to true (it would fail)
            continue;
        }
        target.add(row);
    }
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
public SearchResultsHeaderPanel(String id, IModel<QueryFacetsSelection> model, AbstractPageableView<SolrDocument> resultsView, IDataProvider<SolrDocument> solrDocumentProvider) {
    super(id, model);

    this.solrDocumentProvider = solrDocumentProvider;
    this.resultsView = resultsView;

    add(createSearchInfoLabel("searchInfo"));
    add(createQuerySelectionItems("querySelection"));

    // form to select number of results per page
    add(createResultPageSizeForm("resultPageSizeForm", resultsView));

    //For Ajax updating of search results
    setOutputMarkupId(true);
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
public FieldsTablePanel(String id, IDataProvider<DocumentField> fieldProvider) {
    super(id);
    add(new DataView<DocumentField>("documentField", fieldProvider) {

        @Override
        protected void populateItem(final Item<DocumentField> item) {
            final IModel<DocumentField> fieldModel = item.getModel();
            final PropertyModel<String> fieldNameModel = new PropertyModel<String>(fieldModel, "fieldName");
            final SolrFieldNameModel friendlyFieldNameModel = new SolrFieldNameModel(fieldNameModel);
            final Label fieldName = new Label("fieldName", friendlyFieldNameModel);
            item.add(fieldName);
            fieldName.add(new AttributeAppender("title", new SolrFieldDescriptionModel(fieldNameModel)));
            final PropertyModel<List> valuesModel = new PropertyModel<List>(fieldModel, "values");
            item.add(new ListView("values", valuesModel) {

                @Override
                protected void populateItem(final ListItem fieldValueItem) {
                    // add a label that holds the field value
                    fieldValueItem.add(createValueLabel("value", fieldNameModel, fieldValueItem.getModel()));
                    // add a link for selecting the value in the search
                    fieldValueItem.add(createFacetSelectLink("facetSelect", fieldNameModel, fieldValueItem.getModel()));
                }
            });

            // if field has multiple values, set 'multiple' class on markup element
            item.add(new AttributeModifier("class", new AbstractReadOnlyModel<String>() {

                @Override
                public String getObject() {
                    if (valuesModel.getObject().size() > 1) {
                        return "multiplevalues";
                    } else {
                        return null;
                    }
                }
            }));
        }
    });
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
public PageablePortfolioPanel(String id, IDataProvider<E> dataProvider, int itemsPerPage,
		String countResourceKey) {
	super(id, dataProvider, itemsPerPage);
	this.countResourceKey = countResourceKey;
	countModel = new PropertyModel<Integer>(dataProvider,
			CoreWicketMoreBindings.iBindableDataProvider().size().getPath());
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
public AbstractGenericItemListPanel(String id, IDataProvider<T> dataProvider, long itemsPerPage) {
	super(id);
	this.setOutputMarkupId(true);
	
	this.dataProvider = dataProvider;
	
	dataView = new OddEvenDataView<T>("item", dataProvider, itemsPerPage) {
		private static final long serialVersionUID = 8487422965167269031L;

		@Override
		protected void populateItem(final Item<T> item) {
			final IModel<T> itemModel = item.getModel();
			
			AbstractGenericItemListPanel.this.addItemColumns(item, itemModel);
			item.add(getActionButtonsPanel("actionButtons", itemModel));
		}
	};
	add(dataView);

	add(new WebMarkupContainer("emptyList") {
		private static final long serialVersionUID = 6700720373087584498L;

		@Override
		public boolean isVisible() {
			return dataView.getDataProvider().size() == 0;
		}
	});
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
private IDataProvider<Member> createDataProvider( List<String> members )
{
    ListDataProvider<Member> results;
    if ( CollectionUtils.isNotEmpty( members ) )
    {
        Collections.sort( members, new Comparator<String>()
        {
            @Override
            public int compare(String m1, String m2)
            {
                return m1.compareToIgnoreCase( m2 );
            }
        } );

        int ctr = 0;
        List<Member> tableMembers = new ArrayList<>();
        for ( String member : members )
        {
            Member tableMember = new Member();
            tableMember.setUserDn( member );
            tableMember.setIndex( ++ctr );
            tableMembers.add( tableMember );
        }
        results = new ListDataProvider<>( tableMembers );
    }
    else
    {
        results = new ListDataProvider<>( new ArrayList<Member>() );
    }
    return results;
}
 

import org.apache.wicket.markup.repeater.data.IDataProvider; //导入依赖的package包/类
private IDataProvider<RequestMod> createDataProvider( List<RequestMod> mods )
{
    ListDataProvider<RequestMod> results;
    if ( CollectionUtils.isNotEmpty( mods ) )
    {
        results = new ListDataProvider<>( mods );
    }
    else
    {
        results = new ListDataProvider<>( new ArrayList<RequestMod>() );
    }
    return results;
}