Example usage for javax.el ValueExpression getValue

List of usage examples for javax.el ValueExpression getValue

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Introduction

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

Prototype

public abstract Object getValue(ELContext context);

Source Link

Usage

From source file:org.directwebremoting.faces.Jsf2Creator.java

@Override
public Object getInstance() throws InstantiationException {
    FacesContext facesContext = FacesContext.getCurrentInstance();
    if (facesContext == null) {
        log.error("Object " + getManagedBeanName() + " cannot be created since the faces context is null");
        return null;
    }// w ww .  ja  va  2s . co m
    Object resolvedObject = null;
    if (isVBExpression(getManagedBeanName())) {
        ValueExpression ve = facesContext.getApplication().getExpressionFactory().createValueExpression(
                facesContext.getELContext(), "#{" + getManagedBeanName() + "}", Object.class);
        if (null != ve) {
            resolvedObject = ve.getValue(facesContext.getELContext());
        }
    } else {
        resolvedObject = facesContext.getELContext().getELResolver().getValue(facesContext.getELContext(), null,
                getManagedBeanName());
    }
    return resolvedObject;
}

From source file:biz.netcentric.cq.tools.actool.configreader.YamlMacroElEvaluator.java

public <T> T evaluateEl(String el, Class<T> expectedResultType,
        Map<? extends Object, ? extends Object> variables) {

    vars = variables;//from ww  w .jav  a2s .  c  o  m

    ValueExpression expression = expressionFactory.createValueExpression(context, el, expectedResultType);
    T value = (T) expression.getValue(context);
    return value;
}

From source file:org.nuxeo.ecm.platform.ui.web.component.editor.UIHtmlEditor.java

public String getEditorSelector() {
    if (editorSelector != null) {
        return editorSelector;
    }/* ww  w  . j  av  a 2 s.c  o m*/
    ValueExpression ve = getValueExpression("editorSelector");
    if (ve != null) {
        try {
            return (String) ve.getValue(getFacesContext().getELContext());
        } catch (ELException e) {
            throw new FacesException(e);
        }
    } else {
        // default value
        return "mceEditor";
    }
}

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

@Override
public Object getValue(ELContext context) {
    ELContext nxcontext = getLocalContext(context);
    Object res = null;//from w w w .j ava2s.  co m
    if (originalValueExpression != null) {
        res = originalValueExpression.getValue(nxcontext);
        if (res instanceof String) {
            String expression = (String) res;
            if (ComponentTagUtils.isValueReference(expression)) {
                FacesContext faces = FacesContext.getCurrentInstance();
                Application app = faces.getApplication();
                ExpressionFactory factory = app.getExpressionFactory();
                ValueExpression newExpr = factory.createValueExpression(nxcontext, expression, expectedType);
                try {
                    res = newExpr.getValue(nxcontext);
                } catch (ELException err) {
                    log.error("Error processing expression " + expression + ": " + err);
                    res = null;
                }
            } else {
                res = expression;
            }
        }
    }
    return res;
}

From source file:velo.uiComponents.XMLManager.java

public String getXmlContent() {
    if (this.xmlContent != null) {
        return this.xmlContent;
    }/*from   w  w  w .j ava 2 s.  co m*/

    ValueExpression ve = getValueExpression("xmlContent");
    if (ve != null) {
        try {
            return (String) ve.getValue(getFacesContext().getELContext());
        } catch (ELException e) {
            throw new FacesException(e);
        }
    } else {
        return null;
    }
}

From source file:gwap.game.quiz.PlayNCommunicationResource.java

/**
 * Sets up a new Quiz Game Session//from   w ww  . j a  v a2 s  .  c  o  m
 * 
 * @return gameArray Array for JSON
 */
private JSONObject createJSONObjectForNewGame() {

    try {
        /*
         * setting up dummy JSF FacesContext
         */
        if (Transaction.instance().getStatus() == Status.STATUS_NO_TRANSACTION) {
            Transaction.instance().begin();
        }
        // Conversation.instance().begin();
        FacesContext facesContext = new FacesContextBuilder().getFacesContext(request, response,
                request.getSession());
        this.elc = facesContext.getELContext();

        this.elFactory = facesContext.getApplication().getExpressionFactory();

        ValueExpression mexp = elFactory.createValueExpression(elc, "#{quizSession}", QuizSessionBean.class);
        this.quizSessionBean = (QuizSessionBean) mexp.getValue(elc);
        ses.setAttribute("quizSession", quizSessionBean);

        JSONObject jsonResult = quizSessionBean.getJSONResult();

        facesContext.release();
        Transaction.instance().commit();

        return jsonResult;
    } catch (Exception e) {
        e.printStackTrace();
    }

    return null;
}

From source file:com.flexive.faces.components.content.Jsf2FxValueHandler.java

@Override
public void apply(FaceletContext ctx, UIComponent parent) throws IOException, FacesException {
    final String var;
    try {//from w  w w.  j a  v  a 2 s  . c  om
        if (this.getAttribute("var") == null) {
            // no variable name specified, use enclosing content view
            if (!(parent instanceof FxContentView)) {
                throw new FacesException(
                        "Facelet parent is no FxContentView instance and \"var\" attribute not specified.");
            }
            var = ((FxContentView) parent).getVar();
        } else {
            // use a custom variable name
            var = this.getAttribute("var").getValue(ctx);
        }
    } catch (FxRuntimeException e) {
        throw new FacesException("The fx:value component must be embedded in a fx:content instance.");
    }
    final boolean isNewValue = this.getAttribute("new") != null
            && Boolean.valueOf(this.getAttribute("new").getValue(ctx));
    final VariableMapper origMapper = ctx.getVariableMapper();
    final VariableMapperWrapper mapper = new VariableMapperWrapper(origMapper);
    try {
        ctx.setVariableMapper(mapper);

        // get property attribute
        final String property;
        final TagAttribute propertyAttribute = this.getAttribute("property");
        if (propertyAttribute != null) {
            final ValueExpression propertyExpression = propertyAttribute.getValueExpression(ctx, String.class);
            property = (String) propertyExpression.getValue(ctx);
        } else {
            property = null;
        }
        FxJsfComponentUtils.requireAttribute("fx:value", "property", property);

        // assign id, label/labelKey and value based on the enclosing FxContentView instance
        final ExpressionFactory expressionFactory = ctx.getExpressionFactory();
        mapper.setVariable("id",
                expressionFactory.createValueExpression(StringUtils.replace(property, "/", "_"), String.class));
        if (this.getAttribute("labelKey") == null) {
            // use property label
            mapper.setVariable("label", expressionFactory.createValueExpression(ctx,
                    FxContentView.getExpression(var, property, "label"), FxString.class));
        } else {
            // use provided message key
            assignAttribute(ctx, mapper, "labelKey", String.class);
        }
        // retrieve content from content view
        mapper.setVariable("value", expressionFactory.createValueExpression(ctx,
                FxContentView.getExpression(var, property, isNewValue ? "new" : null), FxValue.class));

        // passthrough other template attributes
        assignAttribute(ctx, mapper, "inputMapper", InputMapper.class);
        assignAttribute(ctx, mapper, "onchange", String.class);
        assignAttribute(ctx, mapper, "readOnly", Boolean.class);
        assignAttribute(ctx, mapper, "decorate", Boolean.class);
        assignAttribute(ctx, mapper, "filter", Boolean.class);
        assignAttribute(ctx, mapper, "forceLineInput", Boolean.class);
        assignAttribute(ctx, mapper, "valueFormatter", FxValueFormatter.class);
        assignAttribute(ctx, mapper, "containerDivClass", String.class);
        assignAttribute(ctx, mapper, "autocompleteHandler", String.class);
        assignAttribute(ctx, mapper, "disableMultiLanguage", Boolean.class);
        assignAttribute(ctx, mapper, "disableLytebox", Boolean.class);
        assignAttribute(ctx, mapper, "tooltip", String.class);
        assignAttribute(ctx, mapper, "tooltipKey", String.class);

        // TODO: cache templates/use a facelet ResourceResolver to encapsulate this
        ctx.includeFacelet(parent,
                Thread.currentThread().getContextClassLoader().getResource(TEMPLATE_ROOT + template));
    } finally {
        ctx.setVariableMapper(origMapper);
    }
}

From source file:com.flexive.faces.components.content.FxValueHandler.java

@Override
public void apply(FaceletContext ctx, UIComponent parent) throws IOException, FacesException, ELException {
    final String var;
    try {/*from   www .j a va 2s .c om*/
        if (this.getAttribute("var") == null) {
            // no variable name specified, use enclosing content view
            if (!(parent instanceof FxContentView)) {
                throw new FacesException(
                        "Facelet parent is no FxContentView instance and \"var\" attribute not specified.");
            }
            var = ((FxContentView) parent).getVar();
        } else {
            // use a custom variable name
            var = this.getAttribute("var").getValue(ctx);
        }
    } catch (FxRuntimeException e) {
        throw new FacesException("The fx:value component must be embedded in a fx:content instance.");
    }
    final boolean isNewValue = this.getAttribute("new") != null
            && Boolean.valueOf(this.getAttribute("new").getValue(ctx));
    final VariableMapper origMapper = ctx.getVariableMapper();
    final VariableMapperWrapper mapper = new VariableMapperWrapper(origMapper);
    try {
        ctx.setVariableMapper(mapper);

        // get property attribute
        final String property;
        final TagAttribute propertyAttribute = this.getAttribute("property");
        if (propertyAttribute != null) {
            final ValueExpression propertyExpression = propertyAttribute.getValueExpression(ctx, String.class);
            property = (String) propertyExpression.getValue(ctx);
        } else {
            property = null;
        }
        FxJsfComponentUtils.requireAttribute("fx:value", "property", property);

        // assign id, label/labelKey and value based on the enclosing FxContentView instance
        final ExpressionFactory expressionFactory = ctx.getExpressionFactory();
        mapper.setVariable("id",
                expressionFactory.createValueExpression(StringUtils.replace(property, "/", "_"), String.class));
        if (this.getAttribute("labelKey") == null) {
            // use property label
            mapper.setVariable("label", expressionFactory.createValueExpression(ctx,
                    FxContentView.getExpression(var, property, "label"), FxString.class));
        } else {
            // use provided message key
            assignAttribute(ctx, mapper, "labelKey", String.class);
        }
        // retrieve content from content view
        mapper.setVariable("value", expressionFactory.createValueExpression(ctx,
                FxContentView.getExpression(var, property, isNewValue ? "new" : null), FxValue.class));

        // passthrough other template attributes
        assignAttribute(ctx, mapper, "inputMapper", InputMapper.class);
        assignAttribute(ctx, mapper, "onchange", String.class);
        assignAttribute(ctx, mapper, "readOnly", Boolean.class);
        assignAttribute(ctx, mapper, "decorate", Boolean.class);
        assignAttribute(ctx, mapper, "filter", Boolean.class);
        assignAttribute(ctx, mapper, "forceLineInput", Boolean.class);
        assignAttribute(ctx, mapper, "newLine", Boolean.class);
        assignAttribute(ctx, mapper, "valueFormatter", FxValueFormatter.class);
        assignAttribute(ctx, mapper, "containerDivClass", String.class);
        assignAttribute(ctx, mapper, "autocompleteHandler", String.class);
        assignAttribute(ctx, mapper, "disableMultiLanguage", Boolean.class);
        assignAttribute(ctx, mapper, "disableLytebox", Boolean.class);
        assignAttribute(ctx, mapper, "tooltip", String.class);
        assignAttribute(ctx, mapper, "tooltipKey", String.class);

        // TODO: cache templates/use a facelet ResourceResolver to encapsulate this
        ctx.includeFacelet(parent,
                Thread.currentThread().getContextClassLoader().getResource(TEMPLATE_ROOT + template));
    } finally {
        ctx.setVariableMapper(origMapper);
    }
}

From source file:org.nuxeo.ecm.platform.ui.web.component.date.UIInputDateTime.java

protected String getStringValue(String name, String defaultValue) {
    ValueExpression ve = getValueExpression(name);
    if (ve != null) {
        try {/*  w w  w.ja  va  2  s . c o  m*/
            return (String) ve.getValue(getFacesContext().getELContext());
        } catch (ELException e) {
            throw new FacesException(e);
        }
    } else {
        return defaultValue;
    }
}

From source file:org.nuxeo.ecm.platform.ui.web.component.date.UIInputDateTime.java

public String getLocale() {
    if (locale != null) {
        return locale;
    }/* www  . j ava2  s.  c o m*/
    ValueExpression ve = getValueExpression("locale");
    if (ve != null) {
        try {
            return (String) ve.getValue(getFacesContext().getELContext());
        } catch (ELException e) {
            throw new FacesException(e);
        }
    } else {
        return null;
    }
}