Example usage for javax.el ExpressionFactory createMethodExpression

List of usage examples for javax.el ExpressionFactory createMethodExpression

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Introduction

In this page you can find the example usage for javax.el ExpressionFactory createMethodExpression.

Prototype

public abstract MethodExpression createMethodExpression(ELContext context, String expression,
        Class<?> expectedReturnType, Class<?>[] expectedParamTypes);

Source Link

Document

Create a new method expression instance.

Usage

From source file:py.una.pol.karaku.util.ELHelper.java

public MethodExpression makeMethodExpression(final String expression, final Class<?> expectedReturnType,
        final Class<?>... expectedParamTypes) {

    MethodExpression methodExpression = null;
    try {//from   www.j  av  a2s.co m
        FacesContext fc = getContext();
        ExpressionFactory factory = getExpressionFactory();
        methodExpression = factory.createMethodExpression(fc.getELContext(), expression, expectedReturnType,
                expectedParamTypes);

        return methodExpression;
    } catch (Exception e) {
        throw new FacesException("Method expression '" + expression + "' no se puede crear.", e);
    }
}

From source file:com.googlecode.jsfFlex.taglib.AbstractFlexUIInputTagBase.java

protected void setProperties(UIComponent component) {
    super.setProperties(component);

    FacesContext context = FacesContext.getCurrentInstance();
    ExpressionFactory expressionFactory = context.getApplication().getExpressionFactory();

    setBooleanProperty(context, component, IMMEDIATE_ATTR, _immediate);
    setBooleanProperty(context, component, REQUIRED_ATTR, _required);

    if (_validator != null) {
        if (!(component instanceof EditableValueHolder)) {
            throw new IllegalArgumentException(
                    "Component " + component.getClientId(context) + " is no EditableValueHolder");
        }//from ww w.ja va  2 s.com

        MethodExpression me = expressionFactory.createMethodExpression(context.getELContext(), _validator,
                Object.class, VALIDATOR_ARGS);
        if (me != null) {
            ((EditableValueHolder) component).addValidator(new MethodExpressionValidator(me));
        } else {
            _log.error("Component " + component.getClientId(context) + " has invalid validation expression "
                    + _validator);
        }
    }

    if (_valueChangeListener != null) {
        if (!(component instanceof EditableValueHolder)) {
            throw new IllegalArgumentException(
                    "Component " + component.getClientId(context) + " is no EditableValueHolder");
        }

        MethodExpression me = expressionFactory.createMethodExpression(context.getELContext(),
                _valueChangeListener, Object.class, VALUE_LISTENER_ARGS);
        if (me != null) {
            ((EditableValueHolder) component)
                    .addValueChangeListener(new MethodExpressionValueChangeListener(me));
        } else {
            _log.error("Component " + component.getClientId(context)
                    + " has invalid valueChangedListener expression " + _valueChangeListener);
        }
    }

}

From source file:com.egt.core.aplicacion.web.GestorPaginaActualizacionConArbol.java

protected MethodExpression getExpresionAccionEscogerNodo() {
    if (expresionAccionZum == null) {
        ExpressionFactory factory = FacesContext.getCurrentInstance().getApplication().getExpressionFactory();
        ELContext context = FacesContext.getCurrentInstance().getELContext();
        String expression = "#{" + this.getPaginaAbstracta().getClass().getSimpleName() + ".accionEscogerNodo}";
        expresionAccionZum = factory.createMethodExpression(context, expression, String.class, new Class[] {});
        this.track("getExpresionAccionEscogerNodo", expression);
    }/*from   ww w  .java 2 s. com*/
    return expresionAccionZum;
}

From source file:ips1ap101.lib.core.web.app.GestorPaginaActualizacionConArbol.java

protected MethodExpression getExpresionAccionEscogerNodo() {
    if (expresionAccionZum == null) {
        ExpressionFactory factory = FacesContext.getCurrentInstance().getApplication().getExpressionFactory();
        ELContext context = FacesContext.getCurrentInstance().getELContext();
        String expression = "#{" + getPaginaBasica().getManagedBeanName() + ".accionEscogerNodo}";
        expresionAccionZum = factory.createMethodExpression(context, expression, String.class, new Class[] {});
        track("getExpresionAccionEscogerNodo", expression);
    }//from ww w .j a  v a 2 s .  c  o  m
    return expresionAccionZum;
}

From source file:py.una.pol.karaku.util.ControllerHelper.java

/**
 * Retorna una EL expression correspondiente a un metodo.
 * /* w w  w  .  j a v a2 s . c  om*/
 * @param valueExpression
 *            cadena que representa la expresion.
 * @param expectedReturnType
 *            clase del tipo que se espera que retorna la expresion
 * @param expectedParamTypes
 *            clase de los parametros esperados que reciba el metodo
 * 
 * @return {@link MethodExpression} correspondiente
 */
public MethodExpression createMethodExpression(final String valueExpression, final Class<?> expectedReturnType,
        final Class<?>... expectedParamTypes) {

    MethodExpression methodExpression = null;
    try {
        FacesContext fc = getContext();
        ExpressionFactory factory = fc.getApplication().getExpressionFactory();
        methodExpression = factory.createMethodExpression(fc.getELContext(), valueExpression,
                expectedReturnType, expectedParamTypes);
    } catch (Exception e) {
        throw new FacesException("Method expression '" + valueExpression + "' could not be created.", e);
    }

    return methodExpression;
}

From source file:eu.planets_project.tb.gui.backing.ExperimentBean.java

/**
 * Creates the JSF Elements to render a given fileRef as CommandLink within the given UIComponent
 * @param panel/*from  w  w w  .  j  ava  2s  .c om*/
 * @param fileRef
 * @param key
 */
public void helperCreateRemoveFileElement(UIComponent panel, String fileRef, String key) {
    log.info("Looking for fileRef: " + fileRef + " w/ key: " + key);
    try {
        FacesContext facesContext = FacesContext.getCurrentInstance();
        DataHandler dh = new DataHandlerImpl();
        //file ref
        HtmlOutputText outputText = (HtmlOutputText) facesContext.getApplication()
                .createComponent(HtmlOutputText.COMPONENT_TYPE);
        DigitalObjectRefBean dobr = dh.get(fileRef);
        outputText.setValue(" " + dobr.getName());
        outputText.setId("fileName" + key);
        //file name
        HtmlOutputLink link_src = (HtmlOutputLink) facesContext.getApplication()
                .createComponent(HtmlOutputLink.COMPONENT_TYPE);
        link_src.setId("fileRef" + key);
        URI URIFileRef = dobr.getDownloadUri();
        link_src.setValue(URIFileRef);
        link_src.setTarget("_new");

        //CommandLink+Icon allowing to delete this entry
        HtmlCommandLink link_remove = (HtmlCommandLink) facesContext.getApplication()
                .createComponent(HtmlCommandLink.COMPONENT_TYPE);
        //set the ActionMethod to the method: "commandRemoveAddedFileRef(ActionEvent e)"
        Class<?>[] parms = new Class<?>[] { ActionEvent.class };
        ExpressionFactory ef = FacesContext.getCurrentInstance().getApplication().getExpressionFactory();
        MethodExpression mb = ef.createMethodExpression(FacesContext.getCurrentInstance().getELContext(),
                "#{NewExp_Controller.commandRemoveAddedFileRef}", null, parms);
        link_remove.setActionExpression(mb);
        link_remove.setId("removeLink" + key);
        link_remove.setTitle("Remove this file."); // FIXME Localise this!
        //send along an helper attribute to identify which component triggered the event
        link_remove.getAttributes().put("IDint", key);
        HtmlGraphicImage image = (HtmlGraphicImage) facesContext.getApplication()
                .createComponent(HtmlGraphicImage.COMPONENT_TYPE);
        image.setUrl("../graphics/user_trash.png");
        image.setAlt("delete-image");
        image.setId("graphicRemove" + key);
        link_remove.getChildren().add(image);

        //add all three components
        panel.getChildren().add(link_remove);
        link_src.getChildren().add(outputText);
        panel.getChildren().add(link_src);

    } catch (Exception e) {
        log.error("error building components for file removal " + e.toString());
    }
}

From source file:org.ajax4jsf.bean.TemplateBean.java

/**
 * Invokes reset method of appropriate backing bean
 * //from  ww w .  ja v  a 2s  .  c  om
 * @param actionEvent
 */
public void reset(ActionEvent actionEvent) {
    FacesContext context = FacesContext.getCurrentInstance();
    if (context != null) {
        if (methodName != null && methodName.trim().length() > 0 && !"null".equals(methodName)) {
            ExpressionFactory factory = context.getApplication().getExpressionFactory();
            if (factory != null) {
                MethodExpression methodExpression = factory.createMethodExpression(context.getELContext(),
                        methodName, Void.class, new Class[] {});
                methodExpression.invoke(context.getELContext(), new Object[] {});
            }
        }
    }

}

From source file:org.nuxeo.ecm.platform.ui.web.binding.MetaMethodExpression.java

@Override
public Object invoke(ELContext context, Object[] params) {
    Object res = null;// w w w.jav a  2 s  .c o m
    if (originalMethodExpression != null) {
        res = originalMethodExpression.invoke(context, params);
        if (res instanceof String) {
            String expression = (String) res;
            if (ComponentTagUtils.isValueReference(expression)) {
                FacesContext faces = FacesContext.getCurrentInstance();
                Application app = faces.getApplication();
                ExpressionFactory factory = app.getExpressionFactory();
                MethodExpression newMeth = factory.createMethodExpression(context, expression, Object.class,
                        new Class[0]);
                try {
                    res = newMeth.invoke(context, null);
                } catch (Throwable t) {
                    if (t instanceof InvocationTargetException) {
                        // respect the javadoc contract of the overridden
                        // method
                        throw new ELException(t.getCause());
                    } else {
                        throw new ELException(t);
                    }
                }
            } else {
                res = expression;
            }
        }
    }
    return res;
}

From source file:org.nuxeo.ecm.platform.ui.web.rest.RestfulPhaseListener.java

/**
 * Hack trigger of a Seam component that will trigger reset of most Seam components caches, only if dev mode is
 * enabled/*from ww  w. j  av a2s  .c o  m*/
 * <p>
 * This is handled here to be done very early, before response is constructed.
 *
 * @since 5.6
 * @see Framework#isDevModeSet()
 */
protected void resetHotReloadContext(FacesContext facesContext) {
    if (Framework.isDevModeSet()) {
        try {
            ExpressionFactory ef = facesContext.getApplication().getExpressionFactory();
            ELContext context = facesContext.getELContext();
            String actionBinding = SEAM_HOTRELOAD_TRIGGER_ACTION;
            MethodExpression action = ef.createMethodExpression(context, actionBinding, String.class,
                    new Class[] { DocumentView.class });
            action.invoke(context, new Object[0]);
        } catch (ELException | NullPointerException e) {
            String msg = "Error while trying to flush seam context after a reload, executing method expression '"
                    + SEAM_HOTRELOAD_TRIGGER_ACTION + "'";
            log.error(msg, e);
        }
    }
}

From source file:org.nuxeo.ecm.platform.ui.web.rest.services.URLPolicyServiceImpl.java

@Override
public String navigate(FacesContext facesContext) {
    HttpServletRequest httpRequest = (HttpServletRequest) facesContext.getExternalContext().getRequest();

    URLPatternDescriptor pattern = getURLPatternDescriptor(httpRequest);
    if (pattern == null) {
        return null;
    }/*ww  w  .j a  v  a 2s. c o  m*/

    DocumentView docView = getDocumentViewFromRequest(pattern.getName(), httpRequest);
    ExpressionFactory ef = facesContext.getApplication().getExpressionFactory();
    ELContext context = facesContext.getELContext();
    String actionBinding = pattern.getActionBinding();

    if (actionBinding != null && !"".equals(actionBinding)
            && httpRequest.getAttribute(URLPolicyService.DISABLE_ACTION_BINDING_KEY) == null) {
        MethodExpression action = ef.createMethodExpression(context, actionBinding, String.class,
                new Class[] { DocumentView.class });
        return (String) action.invoke(context, new Object[] { docView });
    }
    return null;
}