Examples with EvaluationContext org.springframework.expression.EvaluationContext used on opensource projects

Example 66 with EvaluationContext

use of org.springframework.expression.EvaluationContext in project spring-framework by spring-projects.

the class SelectionAndProjectionTests method selectFirstItemInList.

@Test
public void selectFirstItemInList() throws Exception {
    Expression expression = new SpelExpressionParser().parseRaw("integers.^[#this<5]");
    EvaluationContext context = new StandardEvaluationContext(new ListTestBean());
    Object value = expression.getValue(context);
    assertTrue(value instanceof Integer);
    assertEquals(0, value);
}

Example 67 with EvaluationContext

use of org.springframework.expression.EvaluationContext in project spring-framework by spring-projects.

the class SelectionAndProjectionTests method selectionWithPrimitiveArray.

@Test
public void selectionWithPrimitiveArray() throws Exception {
    Expression expression = new SpelExpressionParser().parseRaw("ints.?[#this<5]");
    EvaluationContext context = new StandardEvaluationContext(new ArrayTestBean());
    Object value = expression.getValue(context);
    assertTrue(value.getClass().isArray());
    TypedValue typedValue = new TypedValue(value);
    assertEquals(Integer.class, typedValue.getTypeDescriptor().getElementTypeDescriptor().getType());
    Integer[] array = (Integer[]) value;
    assertEquals(5, array.length);
    assertEquals(new Integer(0), array[0]);
    assertEquals(new Integer(1), array[1]);
    assertEquals(new Integer(2), array[2]);
    assertEquals(new Integer(3), array[3]);
    assertEquals(new Integer(4), array[4]);
}

Example 68 with EvaluationContext

use of org.springframework.expression.EvaluationContext in project spring-framework by spring-projects.

the class SelectionAndProjectionTests method selectFirstItemInSet.

@Test
public void selectFirstItemInSet() throws Exception {
    Expression expression = new SpelExpressionParser().parseRaw("integers.^[#this<5]");
    EvaluationContext context = new StandardEvaluationContext(new SetTestBean());
    Object value = expression.getValue(context);
    assertTrue(value instanceof Integer);
    assertEquals(0, value);
}

Example 69 with EvaluationContext

use of org.springframework.expression.EvaluationContext in project spring-framework by spring-projects.

the class SelectionAndProjectionTests method selectFirstItemInMap.

@Test
@SuppressWarnings("unchecked")
public void selectFirstItemInMap() {
    EvaluationContext context = new StandardEvaluationContext(new MapTestBean());
    ExpressionParser parser = new SpelExpressionParser();
    Expression exp = parser.parseExpression("colors.^[key.startsWith('b')]");
    Map<String, String> colorsMap = (Map<String, String>) exp.getValue(context);
    assertEquals(1, colorsMap.size());
    assertEquals("beige", colorsMap.keySet().iterator().next());
}

Example 70 with EvaluationContext

use of org.springframework.expression.EvaluationContext in project spring-framework by spring-projects.

the class DefaultSubscriptionRegistry method filterSubscriptions.

private MultiValueMap<String, String> filterSubscriptions(MultiValueMap<String, String> allMatches, Message<?> message) {
    if (!this.selectorHeaderInUse) {
        return allMatches;
    }
    EvaluationContext context = null;
    MultiValueMap<String, String> result = new LinkedMultiValueMap<>(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;
}