Examples with SpelExpressionParser org.springframework.expression.spel.standard.SpelExpressionParser used on opensource projects

Example 26 with SpelExpressionParser

use of org.springframework.expression.spel.standard.SpelExpressionParser 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());
    }
}

Example 27 with SpelExpressionParser

use of org.springframework.expression.spel.standard.SpelExpressionParser in project spring-framework by spring-projects.

the class IndexingTests method indexIntoGenericPropertyContainingMapObject.

@Test
public void indexIntoGenericPropertyContainingMapObject() {
    Map<String, Map<String, String>> property = new HashMap<>();
    Map<String, String> map = new HashMap<>();
    map.put("foo", "bar");
    property.put("property", map);
    SpelExpressionParser parser = new SpelExpressionParser();
    StandardEvaluationContext context = new StandardEvaluationContext();
    context.addPropertyAccessor(new MapAccessor());
    context.setRootObject(property);
    Expression expression = parser.parseExpression("property");
    assertEquals("java.util.HashMap<?, ?>", expression.getValueTypeDescriptor(context).toString());
    assertEquals(map, expression.getValue(context));
    assertEquals(map, expression.getValue(context, Map.class));
    expression = parser.parseExpression("property['foo']");
    assertEquals("bar", expression.getValue(context));
}

Example 28 with SpelExpressionParser

use of org.springframework.expression.spel.standard.SpelExpressionParser in project spring-framework by spring-projects.

the class IndexingTests method setPropertyContainingList.

@Test
public void setPropertyContainingList() {
    List<Integer> property = new ArrayList<>();
    property.add(3);
    this.parameterizedList = property;
    SpelExpressionParser parser = new SpelExpressionParser();
    Expression expression = parser.parseExpression("parameterizedList");
    assertEquals("java.util.ArrayList<java.lang.Integer>", expression.getValueTypeDescriptor(this).toString());
    assertEquals(property, expression.getValue(this));
    expression = parser.parseExpression("parameterizedList[0]");
    assertEquals(3, expression.getValue(this));
    expression.setValue(this, "4");
    assertEquals(4, expression.getValue(this));
}

Example 29 with SpelExpressionParser

use of org.springframework.expression.spel.standard.SpelExpressionParser in project spring-framework by spring-projects.

the class MethodInvocationTests method testMethodThrowingException_SPR6941.

/**
	 * Check on first usage (when the cachedExecutor in MethodReference is null) that the exception is not wrapped.
	 */
@Test
public void testMethodThrowingException_SPR6941() {
    // Test method on inventor: throwException()
    // On 1 it will throw an IllegalArgumentException
    // On 2 it will throw a RuntimeException
    // On 3 it will exit normally
    // In each case it increments the Inventor field 'counter' when invoked
    SpelExpressionParser parser = new SpelExpressionParser();
    Expression expr = parser.parseExpression("throwException(#bar)");
    eContext.setVariable("bar", 2);
    try {
        expr.getValue(eContext);
        fail();
    } catch (Exception ex) {
        if (ex instanceof SpelEvaluationException) {
            fail("Should not be a SpelEvaluationException: " + ex);
        }
    // normal
    }
}

Example 30 with SpelExpressionParser

use of org.springframework.expression.spel.standard.SpelExpressionParser in project spring-framework by spring-projects.

the class MethodInvocationTests method testMethodFiltering_SPR6764.

@Test
public void testMethodFiltering_SPR6764() {
    SpelExpressionParser parser = new SpelExpressionParser();
    StandardEvaluationContext context = new StandardEvaluationContext();
    context.setRootObject(new TestObject());
    LocalFilter filter = new LocalFilter();
    context.registerMethodFilter(TestObject.class, filter);
    // Filter will be called but not do anything, so first doit() will be invoked
    SpelExpression expr = (SpelExpression) parser.parseExpression("doit(1)");
    String result = expr.getValue(context, String.class);
    assertEquals("1", result);
    assertTrue(filter.filterCalled);
    // Filter will now remove non @Anno annotated methods
    filter.removeIfNotAnnotated = true;
    filter.filterCalled = false;
    expr = (SpelExpression) parser.parseExpression("doit(1)");
    result = expr.getValue(context, String.class);
    assertEquals("double 1.0", result);
    assertTrue(filter.filterCalled);
    // check not called for other types
    filter.filterCalled = false;
    context.setRootObject(new String("abc"));
    expr = (SpelExpression) parser.parseExpression("charAt(0)");
    result = expr.getValue(context, String.class);
    assertEquals("a", result);
    assertFalse(filter.filterCalled);
    // check de-registration works
    filter.filterCalled = false;
    //clear filter
    context.registerMethodFilter(TestObject.class, null);
    context.setRootObject(new TestObject());
    expr = (SpelExpression) parser.parseExpression("doit(1)");
    result = expr.getValue(context, String.class);
    assertEquals("1", result);
    assertFalse(filter.filterCalled);
}