Example usage for org.springframework.expression.spel.support StandardEvaluationContext StandardEvaluationContext

Introduction

In this page you can find the example usage for org.springframework.expression.spel.support StandardEvaluationContext StandardEvaluationContext.

Prototype

public StandardEvaluationContext(Object rootObject) 

Source Link

Document

Create a StandardEvaluationContext with the given root object.

Usage

From source file:com.vedri.mtp.frontend.support.stomp.DefaultSubscriptionRegistry.java

private MultiValueMap<String, String> filterSubscriptions(MultiValueMap<String, String> allMatches,
        Message<?> message) {//from  w ww. j a  va2 s . c om

    if (!this.selectorHeaderInUse) {
        return allMatches;
    }
    EvaluationContext context = null;
    MultiValueMap<String, String> result = new LinkedMultiValueMap<String, String>(allMatches.size());
    for (String sessionId : allMatches.keySet()) {
        for (String subId : allMatches.get(sessionId)) {
            SessionSubscriptionInfo info = this.subscriptionRegistry.getSubscriptions(sessionId);
            if (info == null) {
                continue;
            }
            Subscription sub = info.getSubscription(subId);
            if (sub == null) {
                continue;
            }
            Expression expression = sub.getSelectorExpression();
            if (expression == null) {
                result.add(sessionId, subId);
                continue;
            }
            if (context == null) {
                context = new StandardEvaluationContext(message);
                context.getPropertyAccessors().add(new SimpMessageHeaderPropertyAccessor());
            }
            try {
                if (expression.getValue(context, boolean.class)) {
                    result.add(sessionId, subId);
                }
            } catch (SpelEvaluationException ex) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Failed to evaluate selector: " + ex.getMessage());
                }
            } catch (Throwable ex) {
                logger.debug("Failed to evaluate selector", ex);
            }
        }
    }
    return result;
}

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From source file:org.synyx.hera.si.PluginRegistryAwareMessageHandler.java

/**
 * Returns the actual arguments to be used for the plugin method invocation. Will apply the configured invocation
 * argument expression to the given {@link Message}.
 * /*from   ww w .j  a  va  2 s . c o m*/
 * @param message
 * @return
 */
private Object[] getInvocationArguments(Message<?> message) {

    if (invocationArgumentsExpression == null) {
        return new Object[] { message };
    }

    StandardEvaluationContext context = new StandardEvaluationContext(message);
    Object result = delimiterExpression.getValue(context);

    return ObjectUtils.isArray(result) ? ObjectUtils.toObjectArray(result) : new Object[] { result };
}

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From source file:es.logongas.ix3.security.model.ACE.java

/**
 * Evalua una expresin de un ACE//from ww w.  j a va 2 s  . c om
 *
 * @param ace El ACE a evaluar
 * @param identity El usuario que est haciando la peticin
 * @param secureResourceName El recurso
 * @param arguments Los argumentos de la peticin
 * @param mg Los MathcherGroups de la "secureResourceName" si el "secureResourceName" era una expresin regular.
 * @return El resultado de evaluarlo
 */
private boolean evaluateConditionalExpression(ACE ace, Identity identity, String secureResourceName,
        Object arguments, List<String> mg) {
    try {
        Object result;

        //Si no hay Script retornamos 'null'
        if ((ace.getConditionalExpression() == null) || (ace.getConditionalExpression().trim().length() == 0)) {
            throw new RuntimeException("No podemos evaluar una expresion vacia del ACE:" + ace.getIdACE());
        }

        EvaluationContext context = new StandardEvaluationContext(
                new ConditionalExpressionSpelContext(ace, identity, secureResourceName, arguments, mg));
        result = expressionParser.parseExpression(ace.getConditionalExpression()).getValue(context,
                Object.class);
        if (result == null) {
            throw new RuntimeException("La expresion no puede retornar null en el ACE:" + ace.getIdACE());
        }
        if (!(result instanceof Boolean)) {
            throw new RuntimeException("La expresion no es un boolean en el ACE:" + ace.getIdACE());
        }

        return (Boolean) result;
    } catch (Exception ex) {
        throw new RuntimeException("ACE:" + ace.toString(), ex);
    }
}

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From source file:gov.nih.nci.calims2.ui.generic.crud.CRUDTableDecorator.java

/**
 * Compute the datastore and the column lengths.
 *///from w  w w  .ja  v  a2 s .c om
private void computeDataStore() {
    List<Column> columns = getDisplayableColumns();
    lengths = new HashMap<String, ColumnLength>();
    for (Column column : columns) {
        String header = messageSource.getMessage(config.getViewPrefix() + "list." + column.getName(), null,
                locale);
        ColumnLength length = new ColumnLength(header.length());
        lengths.put(column.getName(), length);
    }
    Map<String, Expression> expressions = getColumnExpressions(columns);
    dataStore = new TreeMap<String, Object>();
    dataStore.put("identifier", "id");
    List<Map<String, Object>> items = new ArrayList<Map<String, Object>>();
    for (T row : rows) {
        EvaluationContext context = new StandardEvaluationContext(row);
        Map<String, Object> item = new TreeMap<String, Object>();
        List<Boolean> flags = getItemCommandFlags(securityFlags, row);
        item.put("id", row.getId().toString() + convertItemCommandFlags(flags));
        for (Column column : columns) {
            Expression expression = expressions.get(column.getName());
            Object value = evaluateExpression(expression, context);
            String displayedValue = getValue(row, column, value);
            item.put(column.getName(), displayedValue);
            ColumnLength length = lengths.get(column.getName());
            length.adjustLength(displayedValue);
        }
        items.add(item);
    }
    dataStore.put("items", items);
}

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From source file:gov.nih.nci.calims2.taglib.form.SingleSelectTag.java

@SuppressWarnings("unchecked")
private List<Option> getOptionsFromEntities(Collection<?> entities) {
    List<Option> result = new ArrayList<Option>();
    if (optionCreatorCallback != null) {
        OptionCreatorCallback<Object> callback = (OptionCreatorCallback<Object>) optionCreatorCallback;
        for (Object entity : entities) {
            result.add(new Option(callback.getId(entity), callback.getLabel(entity)));
        }// w  w  w  .  j a  v a 2 s  . co m
    } else {
        Expression idProperty = propertyMap.get("id");
        if (idProperty == null) {
            throw new IllegalArgumentException("Missing id property");
        }
        Expression labelProperty = propertyMap.get("label");
        if (labelProperty == null) {
            throw new IllegalArgumentException("Missing label property");
        }
        for (Object entity : entities) {
            EvaluationContext context = new StandardEvaluationContext(entity);
            result.add(new Option(SingleSelectHelper.evaluateExpression(idProperty, context),
                    SingleSelectHelper.evaluateExpression(labelProperty, context)));
        }
    }
    return result;
}

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From source file:com.springinpractice.ch11.web.sitemap.Sitemap.java

public String resolve(String exprStr, Map<String, Object> context) {
    log.debug("Resolving expression: {}", exprStr);
    Expression expr = exprParser.parseExpression(exprStr);
    EvaluationContext evalContext = new StandardEvaluationContext(context);
    return (String) expr.getValue(evalContext);
}

---

From source file:net.abhinavsarkar.spelhelper.SpelHelper.java

private EvaluationContext getEvaluationContext(final Object rootObject) {
    StandardEvaluationContext newContext = new StandardEvaluationContext(rootObject);
    newContext.getMethodResolvers().add(new ImplicitMethodResolver());
    newContext.getPropertyAccessors().add(new ImplicitPropertyAccessor());
    newContext.setConstructorResolvers(asList((ConstructorResolver) new ImplicitConstructorResolver()));
    for (Method method : registeredFunctions) {
        newContext.setVariable(method.getName(), method);
    }//  ww  w. jav a  2s . com
    newContext.setVariable(CONTEXT_LOOKUP_KEY, this);
    return newContext;
}

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From source file:org.apereo.portal.portlet.PortletSpELServiceImpl.java

/**
 * Return a SpEL evaluation context for the supplied portlet request.
 *
 * @param request PortletRequest//from   w  w w. j a va 2  s .c  o  m
 * @return SpEL evaluation context for the supplied portlet request
 */
protected EvaluationContext getEvaluationContext(PortletRequest request) {
    Map<String, String> userInfo = (Map<String, String>) request.getAttribute(PortletRequest.USER_INFO);
    final SpELEnvironmentRoot root = new SpELEnvironmentRoot(new PortletWebRequest(request), userInfo);
    final StandardEvaluationContext context = new StandardEvaluationContext(root);
    // Allows for @myBeanName replacements
    context.setBeanResolver(this.beanResolver);
    return context;
}

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From source file:org.apereo.portal.spring.spel.PortalSpELServiceImpl.java

@Override
public String getValue(String expressionString, Object spelEnvironment) {
    final StandardEvaluationContext context = new StandardEvaluationContext(spelEnvironment);
    context.setBeanResolver(this.beanResolver);
    final Expression expression = this.parseCachedExpression(expressionString, TemplateParserContext.INSTANCE);
    return expression.getValue(context, String.class);
}

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From source file:org.apereo.portal.spring.spel.PortalSpELServiceImpl.java

/**
 * Return a SpEL evaluation context for the supplied web request.
 * //from   ww  w  .j  a va 2s  . com
 * @param request
 * @return
 */
protected EvaluationContext getEvaluationContext(WebRequest request) {
    final HttpServletRequest httpRequest = this.portalRequestUtils.getOriginalPortalRequest(request);
    final IUserInstance userInstance = this.userInstanceManager.getUserInstance(httpRequest);
    final IPerson person = userInstance.getPerson();

    final SpELEnvironmentRoot root = new SpELEnvironmentRoot(request, person);
    final StandardEvaluationContext context = new StandardEvaluationContext(root);
    context.setBeanResolver(this.beanResolver);
    return context;
}

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