Examples of javax.faces.model.DataModel

javax.faces.model.DataModel

DataModel is an abstraction around arbitrary data binding technologies that can be used to adapt a variety of data sources for use by JavaServer Faces components that support per-row processing for their child components (such as {@link UIData}.

The data collection underlying a {@link DataModel} instance ismodeled as a collection of row objects that can be accessed by a zero-relative cursor (row index). The APIs provide mechanisms to position to a specified zero-relative row index, and to retrieve an object that represents the data that corresponds to the current row index.

A concrete {@link DataModel} instance is attached to a particularcollection of underlying data by calling the setWrappedData() method. It can be detached from that underlying data collection by passing a null parameter to this method.

Concrete {@link DataModel} implementations must provide a publiczero-arguments constructor that calls setWrappedData(null). A convenience constructor that takes a wrapped object of the appropriate type (and passes it on via a call to setWrappedData(), should also be provided.

Event listeners may be registered to receive notifications of when a new row index is selected.

        //_expandedNodes = (Map) values[4];
    }


    public _SerializableDataModel getSerializableDataModel()
    {
        DataModel dm = getDataModel();
        if (dm instanceof _SerializableDataModel)
        {
            return (_SerializableDataModel) dm;
        }
        return createSerializableDataModel();

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    assert page.size() > 0 : "There is some data in here";
    
    System.out.println("paginator 1"  + paginator);
    
    petClinicLeadCrud.clear();
    DataModel model = petClinicLeadCrud.getModel();
    assert model != null : "The model is not null";
    List<Row> list = (List<Row>) model.getWrappedData();
    assert list.size() > 0 : "There is some data in here";
    Row row = list.get(0);
    PetClinicInquiry pci = (PetClinicInquiry) row.get("inquiry");
    assert pci.getAnotherProp().startsWith("testInquiry") : "Data seems correct";

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            }
        }


        _rowIndex = rowIndex;


        DataModel dataModel = getDataModel();
        dataModel.setRowIndex(rowIndex);


        String var = (String) getStateHelper().get(PropertyKeys.var);
        if (rowIndex == -1)
        {
            if (var != null)
            {
                facesContext.getExternalContext().getRequestMap().remove(var);
            }
        }
        else
        {
            if (var != null)
            {
                if (isRowAvailable())
                {
                    Object rowData = dataModel.getRowData();
                    facesContext.getExternalContext().getRequestMap().put(var, rowData);
                }
                else
                {
                    facesContext.getExternalContext().getRequestMap().remove(var);

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            }
        }


        _rowIndex = rowIndex;


        DataModel dataModel = getDataModel();
        dataModel.setRowIndex(rowIndex);


        String var = (String) getStateHelper().get(PropertyKeys.var);
        if (rowIndex == -1)
        {
            if (var != null)
            {
                facesContext.getExternalContext().getRequestMap().remove(var);
            }
        }
        else
        {
            if (var != null)
            {
                if (isRowAvailable())
                {
                    Object rowData = dataModel.getRowData();
                    facesContext.getExternalContext().getRequestMap().put(var, rowData);
                }
                else
                {
                    facesContext.getExternalContext().getRequestMap().remove(var);

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     * component is therefore used to cache the datamodel for each row of the table. In the normal case where this table
     * is not nested inside a component that changes its id (like a table does) then this map only ever has one entry.
     */
    protected DataModel getDataModel()
    {
        DataModel dataModel;
        String clientID = "";


        UIComponent parent = getParent();
        if (parent != null)
        {

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            }
        }


        _rowIndex = rowIndex;


        DataModel dataModel = getDataModel();
        dataModel.setRowIndex(rowIndex);


        String var = (String) getStateHelper().get(PropertyKeys.var);
        if (rowIndex == -1)
        {
            if (var != null)
            {
                facesContext.getExternalContext().getRequestMap().remove(var);
            }
        }
        else
        {
            if (var != null)
            {
                if (isRowAvailable())
                {
                    Object rowData = dataModel.getRowData();
                    facesContext.getExternalContext().getRequestMap().put(var, rowData);
                }
                else
                {
                    facesContext.getExternalContext().getRequestMap().remove(var);

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     * component is therefore used to cache the datamodel for each row of the table. In the normal case where this table
     * is not nested inside a component that changes its id (like a table does) then this map only ever has one entry.
     */
    protected DataModel getDataModel()
    {
        DataModel dataModel;
        String clientID = "";


        UIComponent parent = getParent();
        if (parent != null)
        {

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    private void updateModelFromPreservedDataModel(FacesContext context)
    {
        ValueExpression vb = getValueExpression("value");
        if (vb != null && !vb.isReadOnly(context.getELContext()))
        {
            DataModel qdm = getDataModel();
            if (qdm instanceof _SerializableDataModel)
            {
                _SerializableDataModel dm = (_SerializableDataModel) qdm;
                Class type = (getValueType() == null) ? 
                        vb.getType(context.getELContext()) :

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    /**
     * @see org.apache.myfaces.component.html.ext.HtmlDataTableHack#createDataModel()
     */
    protected DataModel createDataModel()
    {
        DataModel dataModel = super.createDataModel();


        boolean isSortable = isSortable();


        if (!(dataModel instanceof SortableModel))
        {

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        _expandedNodes = (Map) values[4];
    }


    public _SerializableDataModel getSerializableDataModel()
    {
        DataModel dm = getDataModel();
        if (dm instanceof _SerializableDataModel)
        {
            return (_SerializableDataModel) dm;
        }
        return createSerializableDataModel();

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