Examples with StandardEvaluationContext org.springframework.expression.spel.support.StandardEvaluationContext used on opensource projects

Example 36 with StandardEvaluationContext

use of org.springframework.expression.spel.support.StandardEvaluationContext in project spring-framework by spring-projects.

the class SelectionAndProjectionTests method selectionWithSet.

@Test
public void selectionWithSet() throws Exception {
    Expression expression = new SpelExpressionParser().parseRaw("integers.?[#this<5]");
    EvaluationContext context = new StandardEvaluationContext(new SetTestBean());
    Object value = expression.getValue(context);
    assertTrue(value instanceof List);
    List<?> list = (List<?>) value;
    assertEquals(5, list.size());
    assertEquals(0, list.get(0));
    assertEquals(1, list.get(1));
    assertEquals(2, list.get(2));
    assertEquals(3, list.get(3));
    assertEquals(4, list.get(4));
}

Example 37 with StandardEvaluationContext

use of org.springframework.expression.spel.support.StandardEvaluationContext in project spring-framework by spring-projects.

the class SelectionAndProjectionTests method selectFirstItemInPrimitiveArray.

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

Example 38 with StandardEvaluationContext

use of org.springframework.expression.spel.support.StandardEvaluationContext in project spring-framework by spring-projects.

the class SelectionAndProjectionTests method projectionWithSet.

@Test
public void projectionWithSet() throws Exception {
    Expression expression = new SpelExpressionParser().parseRaw("#testList.![wrapper.value]");
    EvaluationContext context = new StandardEvaluationContext();
    context.setVariable("testList", IntegerTestBean.createSet());
    Object value = expression.getValue(context);
    assertTrue(value instanceof List);
    List<?> list = (List<?>) value;
    assertEquals(3, list.size());
    assertEquals(5, list.get(0));
    assertEquals(6, list.get(1));
    assertEquals(7, list.get(2));
}

Example 39 with StandardEvaluationContext

use of org.springframework.expression.spel.support.StandardEvaluationContext in project spring-framework by spring-projects.

the class SelectionAndProjectionTests method selectionWithList.

@Test
public void selectionWithList() throws Exception {
    Expression expression = new SpelExpressionParser().parseRaw("integers.?[#this<5]");
    EvaluationContext context = new StandardEvaluationContext(new ListTestBean());
    Object value = expression.getValue(context);
    assertTrue(value instanceof List);
    List<?> list = (List<?>) value;
    assertEquals(5, list.size());
    assertEquals(0, list.get(0));
    assertEquals(1, list.get(1));
    assertEquals(2, list.get(2));
    assertEquals(3, list.get(3));
    assertEquals(4, list.get(4));
}

Example 40 with StandardEvaluationContext

use of org.springframework.expression.spel.support.StandardEvaluationContext in project spring-framework by spring-projects.

the class ExpressionLanguageScenarioTests method testScenario_RegisteringJavaMethodsAsFunctionsAndCallingThem.

/**
	 * Scenario: using your own java methods and calling them from the expression
	 */
@Test
public void testScenario_RegisteringJavaMethodsAsFunctionsAndCallingThem() throws SecurityException, NoSuchMethodException {
    try {
        // Create a parser
        SpelExpressionParser parser = new SpelExpressionParser();
        // Use the standard evaluation context
        StandardEvaluationContext ctx = new StandardEvaluationContext();
        ctx.registerFunction("repeat", ExpressionLanguageScenarioTests.class.getDeclaredMethod("repeat", String.class));
        Expression expr = parser.parseRaw("#repeat('hello')");
        Object value = expr.getValue(ctx);
        assertEquals("hellohello", value);
    } catch (EvaluationException ee) {
        ee.printStackTrace();
        fail("Unexpected Exception: " + ee.getMessage());
    } catch (ParseException pe) {
        pe.printStackTrace();
        fail("Unexpected Exception: " + pe.getMessage());
    }
}