Examples with MethodResolver cn.taketoday.expression.MethodResolver used on opensource projects

Example 1 with MethodResolver

use of cn.taketoday.expression.MethodResolver in project today-infrastructure by TAKETODAY.

the class MethodInvocationTests method testAddingMethodResolvers.

@Test
public void testAddingMethodResolvers() {
    StandardEvaluationContext ctx = new StandardEvaluationContext();
    // reflective method accessor is the only one by default
    List<MethodResolver> methodResolvers = ctx.getMethodResolvers();
    assertThat(methodResolvers.size()).isEqualTo(1);
    MethodResolver dummy = new DummyMethodResolver();
    ctx.addMethodResolver(dummy);
    assertThat(ctx.getMethodResolvers().size()).isEqualTo(2);
    List<MethodResolver> copy = new ArrayList<>(ctx.getMethodResolvers());
    assertThat(ctx.removeMethodResolver(dummy)).isTrue();
    assertThat(ctx.removeMethodResolver(dummy)).isFalse();
    assertThat(ctx.getMethodResolvers().size()).isEqualTo(1);
    ctx.setMethodResolvers(copy);
    assertThat(ctx.getMethodResolvers().size()).isEqualTo(2);
}

Example 2 with MethodResolver

use of cn.taketoday.expression.MethodResolver in project today-framework by TAKETODAY.

the class MethodInvocationTests method testAddingMethodResolvers.

@Test
public void testAddingMethodResolvers() {
    StandardEvaluationContext ctx = new StandardEvaluationContext();
    // reflective method accessor is the only one by default
    List<MethodResolver> methodResolvers = ctx.getMethodResolvers();
    assertThat(methodResolvers.size()).isEqualTo(1);
    MethodResolver dummy = new DummyMethodResolver();
    ctx.addMethodResolver(dummy);
    assertThat(ctx.getMethodResolvers().size()).isEqualTo(2);
    List<MethodResolver> copy = new ArrayList<>(ctx.getMethodResolvers());
    assertThat(ctx.removeMethodResolver(dummy)).isTrue();
    assertThat(ctx.removeMethodResolver(dummy)).isFalse();
    assertThat(ctx.getMethodResolvers().size()).isEqualTo(1);
    ctx.setMethodResolvers(copy);
    assertThat(ctx.getMethodResolvers().size()).isEqualTo(2);
}

Example 3 with MethodResolver

use of cn.taketoday.expression.MethodResolver in project today-framework by TAKETODAY.

the class SpelReproTests method SPR9495.

@Test
void SPR9495() {
    SpelParserConfiguration configuration = new SpelParserConfiguration(false, false);
    ExpressionParser parser = new SpelExpressionParser(configuration);
    StandardEvaluationContext context = new StandardEvaluationContext();
    Expression spel = parser.parseExpression("#enumType.values()");
    context.setVariable("enumType", ABC.class);
    Object result = spel.getValue(context);
    assertThat(result).isNotNull();
    assertThat(result.getClass().isArray()).isTrue();
    assertThat(Array.get(result, 0)).isEqualTo(ABC.A);
    assertThat(Array.get(result, 1)).isEqualTo(ABC.B);
    assertThat(Array.get(result, 2)).isEqualTo(ABC.C);
    context.addMethodResolver(new MethodResolver() {

        @Override
        public MethodExecutor resolve(EvaluationContext context, Object targetObject, String name, List<TypeDescriptor> argumentTypes) throws AccessException {
            return (context1, target, arguments) -> {
                try {
                    Method method = XYZ.class.getMethod("values");
                    Object value = method.invoke(target, arguments);
                    return new TypedValue(value, new TypeDescriptor(new MethodParameter(method, -1)).narrow(value));
                } catch (Exception ex) {
                    throw new AccessException(ex.getMessage(), ex);
                }
            };
        }
    });
    result = spel.getValue(context);
    assertThat(result).isNotNull();
    assertThat(result.getClass().isArray()).isTrue();
    assertThat(Array.get(result, 0)).isEqualTo(XYZ.X);
    assertThat(Array.get(result, 1)).isEqualTo(XYZ.Y);
    assertThat(Array.get(result, 2)).isEqualTo(XYZ.Z);
}

Example 4 with MethodResolver

use of cn.taketoday.expression.MethodResolver in project today-framework by TAKETODAY.

the class SpelReproTests method customStaticFunctions_SPR9038.

/**
 * Test the ability to subclass the ReflectiveMethodResolver and change how it
 * determines the set of methods for a type.
 */
@Test
void customStaticFunctions_SPR9038() {
    ExpressionParser parser = new SpelExpressionParser();
    StandardEvaluationContext context = new StandardEvaluationContext();
    List<MethodResolver> methodResolvers = new ArrayList<>();
    methodResolvers.add(new ReflectiveMethodResolver() {

        @Override
        protected Method[] getMethods(Class<?> type) {
            try {
                return new Method[] { Integer.class.getDeclaredMethod("parseInt", String.class, Integer.TYPE) };
            } catch (NoSuchMethodException ex) {
                return new Method[0];
            }
        }
    });
    context.setMethodResolvers(methodResolvers);
    Expression expression = parser.parseExpression("parseInt('-FF', 16)");
    Integer result = expression.getValue(context, "", Integer.class);
    assertThat(result.intValue()).isEqualTo(-255);
}

Example 5 with MethodResolver

use of cn.taketoday.expression.MethodResolver in project today-infrastructure by TAKETODAY.

the class SpelReproTests method customStaticFunctions_SPR9038.

/**
 * Test the ability to subclass the ReflectiveMethodResolver and change how it
 * determines the set of methods for a type.
 */
@Test
void customStaticFunctions_SPR9038() {
    ExpressionParser parser = new SpelExpressionParser();
    StandardEvaluationContext context = new StandardEvaluationContext();
    List<MethodResolver> methodResolvers = new ArrayList<>();
    methodResolvers.add(new ReflectiveMethodResolver() {

        @Override
        protected Method[] getMethods(Class<?> type) {
            try {
                return new Method[] { Integer.class.getDeclaredMethod("parseInt", String.class, Integer.TYPE) };
            } catch (NoSuchMethodException ex) {
                return new Method[0];
            }
        }
    });
    context.setMethodResolvers(methodResolvers);
    Expression expression = parser.parseExpression("parseInt('-FF', 16)");
    Integer result = expression.getValue(context, "", Integer.class);
    assertThat(result.intValue()).isEqualTo(-255);
}