Example usage for javax.el ValueExpression getValue

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.n52.geolabel.component.GeoLabelComponent.java

/**
 * Check whether a specific GEO label service is known to be broken for the
 * current request/*w ww. j a va2  s . c o  m*/
 * 
 * @param context
 * @return
 */
private static boolean isServiceFailed(String endpoint, FacesContext context) {
    ValueExpression expression = context.getApplication().getExpressionFactory().createValueExpression(
            context.getELContext(), "#{geoLabelResourcesBean}", GeoLabelResourcesBean.class);
    GeoLabelResourcesBean resourcesBean = (GeoLabelResourcesBean) expression.getValue(context.getELContext());
    return resourcesBean.isGeoLabelServiceFailed(endpoint);
}

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From source file:com.flexive.faces.FxJsfComponentUtils.java

public static Object getValue(UIComponent component, String attributeName) {
    ValueExpression ve = component.getValueExpression(attributeName);
    if (ve != null) {
        return ve.getValue(FacesContext.getCurrentInstance().getELContext());
    }/*from   w  ww. j ava  2  s  .  c  o  m*/
    return null;
}

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From source file:ec.edu.chyc.manejopersonal.managebean.GestorTesis.java

public static GestorTesis getInstance() {
    FacesContext facesContext = FacesContext.getCurrentInstance();
    ELContext context = facesContext.getELContext();
    ValueExpression ex = facesContext.getApplication().getExpressionFactory().createValueExpression(context,
            "#{gestorTesis}", GestorTesis.class);
    return (GestorTesis) ex.getValue(context);
}

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From source file:org.ajax4jsf.context.ViewResources.java

private static String evaluate(FacesContext context, Object parameterValue) {
    if (parameterValue == NULL || parameterValue == null) {
        return null;
    } else if (parameterValue instanceof ValueExpression) {
        ValueExpression expression = (ValueExpression) parameterValue;

        return (String) expression.getValue(context.getELContext());
    } else {/*from  w w w . j  a  v a  2s .c  o m*/
        return parameterValue.toString();
    }
}

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From source file:ec.edu.chyc.manejopersonal.managebean.GestorPersona.java

public static GestorPersona getInstance() {
    javax.faces.context.FacesContext facesContext = javax.faces.context.FacesContext.getCurrentInstance();
    javax.el.ELContext context = facesContext.getELContext();
    javax.el.ValueExpression ex = facesContext.getApplication().getExpressionFactory()
            .createValueExpression(context, "#{gestorPersona}", GestorPersona.class);
    return (GestorPersona) ex.getValue(context);
}

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From source file:org.nuxeo.ecm.platform.ui.web.util.ComponentUtils.java

public static Object getAttributeOrExpressionValue(FacesContext context, UIComponent component,
        String attributeName, Object defaultValue) {
    Object value = component.getAttributes().get(attributeName);
    if (value == null) {
        ValueExpression schemaExpr = component.getValueExpression(attributeName);
        value = schemaExpr.getValue(context.getELContext());
    }/*from   ww  w .  jav a2 s.  c  o m*/
    if (value == null) {
        value = defaultValue;
    }
    return value;
}

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From source file:org.nuxeo.ecm.platform.forms.layout.facelets.FaceletHandlerHelper.java

/**
 * @since 6.0/*from  w  w w  .j  a  v a 2  s  .  co m*/
 */
public static boolean isDevModeEnabled(FaceletContext ctx) {
    // avoid stack overflow when using layout tags within the dev
    // handler
    if (Framework.isDevModeSet()) {
        NuxeoLayoutManagerBean bean = lookupBean(ctx.getFacesContext());
        if (bean.isDevModeSet()) {
            ExpressionFactory eFactory = ctx.getExpressionFactory();
            ValueExpression disableDevAttr = eFactory.createValueExpression(ctx,
                    "#{" + DEV_MODE_DISABLED_VARIABLE + "}", Boolean.class);
            if (!Boolean.TRUE.equals(disableDevAttr.getValue(ctx))) {
                return true;
            }
        }
    }
    return false;
}

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From source file:org.nuxeo.ecm.platform.ui.web.util.ComponentUtils.java

/**
 * Evaluates parameters to pass to translation methods if they are value expressions.
 *
 * @since 5.7//from  w w  w.  ja va 2  s. c  o m
 */
protected static Object[] evaluateParams(FacesContext context, Object[] params) {
    if (params == null) {
        return null;
    }
    Object[] res = new Object[params.length];
    for (int i = 0; i < params.length; i++) {
        Object val = params[i];
        if (val instanceof String && ComponentTagUtils.isValueReference((String) val)) {
            ValueExpression ve = context.getApplication().getExpressionFactory()
                    .createValueExpression(context.getELContext(), (String) val, Object.class);
            res[i] = ve.getValue(context.getELContext());
        } else {
            res[i] = val;
        }
    }
    return res;
}

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From source file:ec.edu.chyc.manejopersonal.managebean.GestorArticulo.java

public static GestorArticulo getInstance() {
    FacesContext facesContext = FacesContext.getCurrentInstance();
    ELContext context = facesContext.getELContext();
    ValueExpression ex = facesContext.getApplication().getExpressionFactory().createValueExpression(context,
            "#{gestorArticulo}", GestorArticulo.class);
    return (GestorArticulo) ex.getValue(context);
}

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From source file:org.tinygroup.jspengine.runtime.PageContextImpl.java

/**
 * Evaluates an EL expression/*from w ww.  ja v  a  2s.c o  m*/
 *
 * @param expression The expression to be evaluated
 * @param expectedType The expected resulting type
 * @param pageContext The page context
 * @param functionMap Maps prefix and name to Method
 * @return The result of the evaluation
 */
public static Object evaluateExpression(final String expression, final Class expectedType,
        final PageContext pageContext, final ProtectedFunctionMapper functionMap) throws ELException {
    Object retValue;
    if (SecurityUtil.isPackageProtectionEnabled()) {
        try {
            retValue = AccessController.doPrivileged(new PrivilegedExceptionAction() {

                public Object run() throws Exception {
                    ELContextImpl elContext = (ELContextImpl) pageContext.getELContext();
                    elContext.setFunctionMapper(functionMap);
                    ExpressionFactory expFactory = getExpressionFactory(pageContext);
                    ValueExpression expr = expFactory.createValueExpression(elContext, expression,
                            expectedType);
                    return expr.getValue(elContext);
                }
            });
        } catch (PrivilegedActionException ex) {
            Exception realEx = ex.getException();
            if (realEx instanceof ELException) {
                throw (ELException) realEx;
            } else {
                throw new ELException(realEx);
            }
        }
    } else {
        ELContextImpl elContext = (ELContextImpl) pageContext.getELContext();
        elContext.setFunctionMapper(functionMap);
        ExpressionFactory expFactory = getExpressionFactory(pageContext);
        ValueExpression expr = expFactory.createValueExpression(elContext, expression, expectedType);
        retValue = expr.getValue(elContext);
    }
    return retValue;
}

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