Example usage for javax.el ValueExpression setValue

List of usage examples for javax.el ValueExpression setValue

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Introduction

In this page you can find the example usage for javax.el ValueExpression setValue.

Prototype

public abstract void setValue(ELContext context, Object value);

Source Link

Usage

From source file:org.apache.myfaces.component.html.ext.AbstractHtmlDataTable.java

public void setForceIdIndexFormula(String forceIdIndexFormula) {
    getStateHelper().put(PropertyKeys.forceIdIndexFormula, forceIdIndexFormula);
    ValueExpression vb = getValueExpression("forceIdIndexFormula");
    if (vb != null) {
        vb.setValue(getFacesContext().getELContext(), forceIdIndexFormula);
        getStateHelper().put(PropertyKeys.forceIdIndexFormula, null);
    }//w ww  .  j a v a  2s  .  co m
}

From source file:org.apache.myfaces.component.html.ext.AbstractHtmlDataTable.java

public void restoreState(FacesContext context, Object state) {
    if (state == null) {
        return;// w ww .j  a va  2 s. c o m
    }

    Object[] values = (Object[]) state;
    super.restoreState(context, values[0]);
    if (isPreserveDataModel()) {
        _preservedDataModel = (_SerializableDataModel) restoreAttachedState(context, values[1]);
    } else {
        _preservedDataModel = null;
    }

    if (isPreserveSort()) {
        String sortColumn = (String) values[2];
        Boolean sortAscending = (Boolean) values[3];
        if (sortColumn != null && sortAscending != null) {
            ValueExpression vb = getValueExpression("sortColumn");
            if (vb != null && !vb.isReadOnly(context.getELContext())) {
                vb.setValue(context.getELContext(), sortColumn);
            }

            vb = getValueExpression("sortAscending");
            if (vb != null && !vb.isReadOnly(context.getELContext())) {
                vb.setValue(context.getELContext(), sortAscending);
            }
        }
    }

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

From source file:org.apache.myfaces.component.html.ext.AbstractHtmlDataTable.java

private void updateModelFromPreservedDataModel(FacesContext context) {
    ValueExpression vb = getValueExpression("value");
    if (vb != null && !vb.isReadOnly(context.getELContext())) {
        DataModel qdm = getDataModel();/*w ww . ja v  a  2  s.c o  m*/
        if (qdm instanceof _SerializableDataModel) {
            _SerializableDataModel dm = (_SerializableDataModel) qdm;
            Class type = (getValueType() == null) ? vb.getType(context.getELContext())
                    : ClassUtils.simpleClassForName(getValueType());
            Class dmType = dm.getClass();
            if (DataModel.class.isAssignableFrom(type)) {
                vb.setValue(context.getELContext(), dm);
            } else if (List.class.isAssignableFrom(type)
                    || _SerializableListDataModel.class.isAssignableFrom(dmType)) {
                vb.setValue(context.getELContext(), dm.getWrappedData());
            } else if (OBJECT_ARRAY_CLASS.isAssignableFrom(type)) {
                List lst = (List) dm.getWrappedData();
                vb.setValue(context.getELContext(), lst.toArray(new Object[lst.size()]));
            } else if (ResultSet.class.isAssignableFrom(type)) {
                throw new UnsupportedOperationException(
                        this.getClass().getName() + " UnsupportedOperationException");
            } else {
                //Assume scalar data model
                List lst = (List) dm.getWrappedData();
                if (lst != null && lst.size() > 0) {
                    vb.setValue(context.getELContext(), lst.get(0));
                } else {
                    vb.setValue(context.getELContext(), null);
                }
            }
        }
    }
    _preservedDataModel = null;
}

From source file:org.apache.myfaces.application.ApplicationImpl.java

@Override
public final UIComponent createComponent(final ValueExpression componentExpression,
        final FacesContext facesContext, final String componentType)
        throws FacesException, NullPointerException {

    /*/*from  www . j a  va 2  s . co m*/
     * Before the component instance is returned, it must be inspected for the presence of a ListenerFor (or
     * ListenersFor) or ResourceDependency (or ResourceDependencies) annotation. If any of these annotations are
     * present, the action listed in ListenerFor or ResourceDependency must be taken on the component, 
     * before it is
     * returned from this method. This variant of createComponent must not inspect the Renderer for the 
     * component to
     * be returned for any of the afore mentioned annotations. Such inspection is the province of
     */

    checkNull(componentExpression, "componentExpression");
    checkNull(facesContext, "facesContext");
    checkNull(componentType, "componentType");

    ELContext elContext = facesContext.getELContext();

    try {
        Object retVal = componentExpression.getValue(elContext);

        UIComponent createdComponent;

        if (retVal instanceof UIComponent) {
            createdComponent = (UIComponent) retVal;
            _handleAnnotations(facesContext, createdComponent, createdComponent);
        } else {
            createdComponent = createComponent(facesContext, componentType);
            componentExpression.setValue(elContext, createdComponent);
        }

        return createdComponent;
    } catch (FacesException e) {
        throw e;
    } catch (Exception e) {
        throw new FacesException(e);
    }
}