List of usage examples for org.springframework.expression EvaluationContext setVariable
void setVariable(String name, @Nullable Object value);
From source file:org.snaker.engine.spring.SpelExpression.java
public <T> T eval(Class<T> T, String expr, Map<String, Object> args) { EvaluationContext context = new StandardEvaluationContext(); for (Entry<String, Object> entry : args.entrySet()) { context.setVariable(entry.getKey(), entry.getValue()); }//from www . ja v a2s. c o m return parser.parseExpression(expr).getValue(context, T); }
From source file:com.github.sebhoss.contract.verifier.SpELBasedContractContextFactory.java
@Override public ContractContext createContext(final Object instance, final Object[] arguments, final String[] parameterNames) { final ExpressionParser parser = new SpelExpressionParser(); final EvaluationContext context = new StandardEvaluationContext(instance); for (int index = 0; index < arguments.length; index++) { context.setVariable(parameterNames[index], arguments[index]); }//from w w w. ja va 2 s. c o m return new SpELContractContext(parser, context); }
From source file:org.jmingo.el.springexp.SpringELEngine.java
/** * {@inheritDoc}/*from ww w. ja va 2s. c o m*/ */ @Override public synchronized boolean evaluate(String expression, Map<String, Object> parameters) { Validate.notBlank(expression, "expression cannot be empty"); Expression exp = parser.parseExpression(expression); EvaluationContext context = new StandardEvaluationContext(); if (MapUtils.isNotEmpty(parameters)) { for (Map.Entry<String, Object> parameter : parameters.entrySet()) { context.setVariable(parameter.getKey(), parameter.getValue()); } } return exp.getValue(context, Boolean.class); }
From source file:io.dyn.core.handler.GuardedHandlerMethodInvoker.java
@Override public Object invoke(HandlerMethod method, Object handler, EvaluationContext evalCtx, Object... args) throws Exception { if (null == evalCtx) { StandardEvaluationContext ec = new StandardEvaluationContext(); if (null != applicationContext) { ec.setBeanResolver(new BeanFactoryResolver(applicationContext)); }/*from w w w. j a v a 2s . co m*/ evalCtx = ec; } HandlerMethodArgument[] handlerMethodArguments = method.arguments(); int argc = handlerMethodArguments.length; Object[] argv = new Object[argc]; for (int i = 0; i < argc; i++) { HandlerMethodArgument handlerArg = handlerMethodArguments[i]; if (ClassUtils.isAssignable(EvaluationContext.class, handlerArg.targetType())) { argv[i] = evalCtx; } else if (null != handlerArg.valueExpression()) { try { argv[i] = handlerArg.valueExpression().getValue(evalCtx, handlerArg.targetType()); } catch (SpelEvaluationException e) { argv[i] = null; } } else { try { Object o = args[handlerArg.index()]; if (ClassUtils.isAssignable(handlerArg.targetType(), o.getClass())) { argv[i] = o; } else if (null != customConversionService && customConversionService.canConvert(o.getClass(), handlerArg.targetType())) { argv[i] = customConversionService.convert(o, handlerArg.targetType()); } else { argv[i] = Sys.DEFAULT_CONVERSION_SERVICE.convert(o, handlerArg.targetType()); } } catch (IndexOutOfBoundsException e) { } } evalCtx.setVariable(handlerArg.name(), argv[i]); } InvocationHandler invoker = method.invocationHandler(); Method m = method.methodToInvoke(); if (null != method.guard()) { if (method.guard().checkGuard(null, evalCtx)) { if (null != invoker) { try { invoker.invoke(handler, m, argv); } catch (Throwable throwable) { throw new IllegalStateException(throwable); } } else { return m.invoke(handler, argv); } } else { //LOG.debug("Guard expression %s failed", method.guard().expression().getExpressionString()); } } else { if (null != invoker) { try { return invoker.invoke(handler, m, argv); } catch (Throwable throwable) { throw new IllegalStateException(throwable); } } else { return m.invoke(handler, argv); } } return null; }
From source file:com.qcadoo.model.internal.ExpressionServiceImpl.java
@Override public String getValue(final Entity entity, final String expression, final Locale locale) { if (StringUtils.isEmpty(expression) || "null".equals(expression)) { LOG.warn("Calculating empty expressions"); return null; }/*from w ww . jav a 2 s . co m*/ ExpressionParser parser = new SpelExpressionParser(); Expression exp = parser.parseExpression(expression); EvaluationContext context = new StandardEvaluationContext(); if (entity != null) { Map<String, Object> values = getValuesForEntity(entity, locale, 2); for (Map.Entry<String, Object> entry : values.entrySet()) { context.setVariable(entry.getKey(), entry.getValue()); } } String value = null; try { value = String.valueOf(exp.getValue(context)); if (LOG.isDebugEnabled()) { LOG.debug("Calculating value of expression \"" + expression + "\" for " + entity + " : " + value); } } catch (SpelEvaluationException e) { if (SpelMessage.CANNOT_INDEX_INTO_NULL_VALUE.equals(e.getMessageCode())) { return ""; } else { LOG.error("Error while calculating value of expression \"" + expression + "\" for " + entity, e); value = "!!!"; } } if (StringUtils.isEmpty(value) || "null".equals(value)) { return null; } else { return translate(value, locale); } }
From source file:org.apache.rave.synchronization.SynchronizingAspect.java
private EvaluationContext getEvaluationContext(Class<?> targetClass, Method method, Object[] args) { EvaluationContext context = new StandardEvaluationContext(); if (ArrayUtils.isEmpty(args)) { return context; }//from w w w.ja va2 s . c o m Method targetMethod = getTargetMethod(targetClass, method); for (int i = 0; i < args.length; i++) { context.setVariable("p" + i, args[i]); } String[] parameterNames = paramNameDiscoverer.getParameterNames(targetMethod); if (parameterNames != null) { for (int i = 0; i < parameterNames.length; i++) { context.setVariable(parameterNames[i], args[i]); } } return context; }
From source file:org.finra.dm.app.security.SecurityHelper.java
/** * Checks whether security is enabled based on SpEL expression defined in environment. * //from ww w . j a v a 2s . com * @param request {@link HttpServletRequest} to determine whether security is enabled. * @return true if security is enabled, false if disabled. */ public boolean isSecurityEnabled(HttpServletRequest request) { Boolean isSecurityEnabled = true; String enableSecuritySpelExpression = configurationHelper .getProperty(ConfigurationValue.SECURITY_ENABLED_SPEL_EXPRESSION); if (StringUtils.isNotBlank(enableSecuritySpelExpression)) { EvaluationContext evaluationContext = new StandardEvaluationContext(); evaluationContext.setVariable("request", request); Expression expression = expressionParser.parseExpression(enableSecuritySpelExpression); isSecurityEnabled = expression.getValue(evaluationContext, Boolean.class); } return isSecurityEnabled; }
From source file:org.springframework.integration.handler.ExpressionEvaluatingMessageProcessorTests.java
@SuppressWarnings({ "rawtypes", "unchecked" })
@Test//from w w w.ja v a 2 s . c o m
public void testProcessMessageWithParameterCoercion() throws Exception {
@SuppressWarnings("unused")
class TestTarget {
public String stringify(int number) {
return number + "";
}
}
Expression expression = expressionParser.parseExpression("#target.stringify(payload)");
ExpressionEvaluatingMessageProcessor processor = new ExpressionEvaluatingMessageProcessor(expression);
processor.setBeanFactory(mock(BeanFactory.class));
processor.afterPropertiesSet();
EvaluationContext evaluationContext = TestUtils.getPropertyValue(processor, "evaluationContext",
EvaluationContext.class);
evaluationContext.setVariable("target", new TestTarget());
assertEquals("2", processor.processMessage(new GenericMessage<String>("2")));
}
From source file:org.springframework.integration.handler.ExpressionEvaluatingMessageProcessorTests.java
@SuppressWarnings({ "rawtypes", "unchecked" })
@Test//from w w w .ja v a2s . com
public void testProcessMessageWithVoidResult() throws Exception {
@SuppressWarnings("unused")
class TestTarget {
public void ping(String input) {
}
}
Expression expression = expressionParser.parseExpression("#target.ping(payload)");
ExpressionEvaluatingMessageProcessor processor = new ExpressionEvaluatingMessageProcessor(expression);
processor.setBeanFactory(mock(BeanFactory.class));
processor.afterPropertiesSet();
EvaluationContext evaluationContext = TestUtils.getPropertyValue(processor, "evaluationContext",
EvaluationContext.class);
evaluationContext.setVariable("target", new TestTarget());
assertEquals(null, processor.processMessage(new GenericMessage<String>("2")));
}
From source file:org.springframework.integration.handler.ExpressionEvaluatingMessageProcessorTests.java
@SuppressWarnings({ "rawtypes", "unchecked" })
@Test/*from w w w .ja v a2 s.c o m*/
public void testProcessMessageWithParameterCoercionToNonPrimitive() throws Exception {
class TestTarget {
@SuppressWarnings("unused")
public String find(Resource[] resources) {
return Arrays.asList(resources).toString();
}
}
Expression expression = expressionParser.parseExpression("#target.find(payload)");
ExpressionEvaluatingMessageProcessor processor = new ExpressionEvaluatingMessageProcessor(expression);
ConfigurableListableBeanFactory beanFactory = new GenericApplicationContext().getBeanFactory();
processor.setBeanFactory(beanFactory);
IntegrationEvaluationContextFactoryBean factoryBean = new IntegrationEvaluationContextFactoryBean();
factoryBean.setBeanFactory(beanFactory);
beanFactory.registerSingleton(IntegrationContextUtils.INTEGRATION_EVALUATION_CONTEXT_BEAN_NAME,
factoryBean.getObject());
processor.afterPropertiesSet();
EvaluationContext evaluationContext = TestUtils.getPropertyValue(processor, "evaluationContext",
EvaluationContext.class);
evaluationContext.setVariable("target", new TestTarget());
String result = (String) processor.processMessage(new GenericMessage<String>("classpath*:*.properties"));
assertTrue("Wrong result: " + result, result.contains("log4j.properties"));
}