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

Example 36 with EvaluationContext

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

the class SpelReproTests method SPR10417.

@Test
@SuppressWarnings({ "unchecked", "rawtypes" })
public void SPR10417() {
    List list1 = new ArrayList();
    list1.add("a");
    list1.add("b");
    list1.add("x");
    List list2 = new ArrayList();
    list2.add("c");
    list2.add("x");
    EvaluationContext context = new StandardEvaluationContext();
    context.setVariable("list1", list1);
    context.setVariable("list2", list2);
    // #this should be the element from list1
    Expression ex = parser.parseExpression("#list1.?[#list2.contains(#this)]");
    Object result = ex.getValue(context);
    assertEquals("[x]", result.toString());
    // toString() should be called on the element from list1
    ex = parser.parseExpression("#list1.?[#list2.contains(toString())]");
    result = ex.getValue(context);
    assertEquals("[x]", result.toString());
    List list3 = new ArrayList();
    list3.add(1);
    list3.add(2);
    list3.add(3);
    list3.add(4);
    context = new StandardEvaluationContext();
    context.setVariable("list3", list3);
    ex = parser.parseExpression("#list3.?[#this > 2]");
    result = ex.getValue(context);
    assertEquals("[3, 4]", result.toString());
    ex = parser.parseExpression("#list3.?[#this >= T(java.lang.Math).abs(T(java.lang.Math).abs(#this))]");
    result = ex.getValue(context);
    assertEquals("[1, 2, 3, 4]", result.toString());
}

Example 37 with EvaluationContext

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

the class SpelParserTests method valueType.

@Test
public void valueType() {
    SpelExpressionParser parser = new SpelExpressionParser();
    EvaluationContext ctx = new StandardEvaluationContext();
    Class<?> c = parser.parseRaw("2").getValueType();
    assertEquals(Integer.class, c);
    c = parser.parseRaw("12").getValueType(ctx);
    assertEquals(Integer.class, c);
    c = parser.parseRaw("null").getValueType();
    assertNull(c);
    c = parser.parseRaw("null").getValueType(ctx);
    assertNull(c);
    Object o = parser.parseRaw("null").getValue(ctx, Integer.class);
    assertNull(o);
}

Example 38 with EvaluationContext

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

the class ReflectionHelperTests method testOptimalReflectivePropertyResolver.

@Test
public void testOptimalReflectivePropertyResolver() throws Exception {
    ReflectivePropertyAccessor rpr = new ReflectivePropertyAccessor();
    Tester t = new Tester();
    t.setProperty("hello");
    EvaluationContext ctx = new StandardEvaluationContext(t);
    //		assertTrue(rpr.canRead(ctx, t, "property"));
    //		assertEquals("hello",rpr.read(ctx, t, "property").getValue());
    //		assertEquals("hello",rpr.read(ctx, t, "property").getValue()); // cached accessor used
    PropertyAccessor optA = rpr.createOptimalAccessor(ctx, t, "property");
    assertTrue(optA.canRead(ctx, t, "property"));
    assertFalse(optA.canRead(ctx, t, "property2"));
    try {
        optA.canWrite(ctx, t, "property");
        fail();
    } catch (UnsupportedOperationException uoe) {
    // success
    }
    try {
        optA.canWrite(ctx, t, "property2");
        fail();
    } catch (UnsupportedOperationException uoe) {
    // success
    }
    assertEquals("hello", optA.read(ctx, t, "property").getValue());
    // cached accessor used
    assertEquals("hello", optA.read(ctx, t, "property").getValue());
    try {
        optA.getSpecificTargetClasses();
        fail();
    } catch (UnsupportedOperationException uoe) {
    // success
    }
    try {
        optA.write(ctx, t, "property", null);
        fail();
    } catch (UnsupportedOperationException uoe) {
    // success
    }
    optA = rpr.createOptimalAccessor(ctx, t, "field");
    assertTrue(optA.canRead(ctx, t, "field"));
    assertFalse(optA.canRead(ctx, t, "field2"));
    try {
        optA.canWrite(ctx, t, "field");
        fail();
    } catch (UnsupportedOperationException uoe) {
    // success
    }
    try {
        optA.canWrite(ctx, t, "field2");
        fail();
    } catch (UnsupportedOperationException uoe) {
    // success
    }
    assertEquals(3, optA.read(ctx, t, "field").getValue());
    // cached accessor used
    assertEquals(3, optA.read(ctx, t, "field").getValue());
    try {
        optA.getSpecificTargetClasses();
        fail();
    } catch (UnsupportedOperationException uoe) {
    // success
    }
    try {
        optA.write(ctx, t, "field", null);
        fail();
    } catch (UnsupportedOperationException uoe) {
    // success
    }
}

Example 39 with EvaluationContext

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

the class ReflectionHelperTests method testReflectivePropertyResolver.

@Test
public void testReflectivePropertyResolver() throws Exception {
    ReflectivePropertyAccessor rpr = new ReflectivePropertyAccessor();
    Tester t = new Tester();
    t.setProperty("hello");
    EvaluationContext ctx = new StandardEvaluationContext(t);
    assertTrue(rpr.canRead(ctx, t, "property"));
    assertEquals("hello", rpr.read(ctx, t, "property").getValue());
    // cached accessor used
    assertEquals("hello", rpr.read(ctx, t, "property").getValue());
    assertTrue(rpr.canRead(ctx, t, "field"));
    assertEquals(3, rpr.read(ctx, t, "field").getValue());
    // cached accessor used
    assertEquals(3, rpr.read(ctx, t, "field").getValue());
    assertTrue(rpr.canWrite(ctx, t, "property"));
    rpr.write(ctx, t, "property", "goodbye");
    // cached accessor used
    rpr.write(ctx, t, "property", "goodbye");
    assertTrue(rpr.canWrite(ctx, t, "field"));
    rpr.write(ctx, t, "field", 12);
    rpr.write(ctx, t, "field", 12);
    // Attempted write as first activity on this field and property to drive testing
    // of populating type descriptor cache
    rpr.write(ctx, t, "field2", 3);
    rpr.write(ctx, t, "property2", "doodoo");
    assertEquals(3, rpr.read(ctx, t, "field2").getValue());
    // Attempted read as first activity on this field and property (no canRead before them)
    assertEquals(0, rpr.read(ctx, t, "field3").getValue());
    assertEquals("doodoo", rpr.read(ctx, t, "property3").getValue());
    // Access through is method
    //		assertEquals(0,rpr.read(ctx,t,"field3").getValue());
    assertEquals(false, rpr.read(ctx, t, "property4").getValue());
    assertTrue(rpr.canRead(ctx, t, "property4"));
    // repro SPR-9123, ReflectivePropertyAccessor JavaBean property names compliance tests
    assertEquals("iD", rpr.read(ctx, t, "iD").getValue());
    assertTrue(rpr.canRead(ctx, t, "iD"));
    assertEquals("id", rpr.read(ctx, t, "id").getValue());
    assertTrue(rpr.canRead(ctx, t, "id"));
    assertEquals("ID", rpr.read(ctx, t, "ID").getValue());
    assertTrue(rpr.canRead(ctx, t, "ID"));
    // note: "Id" is not a valid JavaBean name, nevertheless it is treated as "id"
    assertEquals("id", rpr.read(ctx, t, "Id").getValue());
    assertTrue(rpr.canRead(ctx, t, "Id"));
    // repro SPR-10994
    assertEquals("xyZ", rpr.read(ctx, t, "xyZ").getValue());
    assertTrue(rpr.canRead(ctx, t, "xyZ"));
    assertEquals("xY", rpr.read(ctx, t, "xY").getValue());
    assertTrue(rpr.canRead(ctx, t, "xY"));
    // SPR-10122, ReflectivePropertyAccessor JavaBean property names compliance tests - setters
    rpr.write(ctx, t, "pEBS", "Test String");
    assertEquals("Test String", rpr.read(ctx, t, "pEBS").getValue());
}

Example 40 with EvaluationContext

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

the class SpelReproTests method SPR9495.

@Test
public void SPR9495() throws Exception {
    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);
    assertNotNull(result);
    assertTrue(result.getClass().isArray());
    assertEquals(ABC.A, Array.get(result, 0));
    assertEquals(ABC.B, Array.get(result, 1));
    assertEquals(ABC.C, Array.get(result, 2));
    context.addMethodResolver(new MethodResolver() {

        @Override
        public MethodExecutor resolve(EvaluationContext context, Object targetObject, String name, List<TypeDescriptor> argumentTypes) throws AccessException {
            return new MethodExecutor() {

                @Override
                public TypedValue execute(EvaluationContext context, Object target, Object... arguments) throws AccessException {
                    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);
    assertNotNull(result);
    assertTrue(result.getClass().isArray());
    assertEquals(XYZ.X, Array.get(result, 0));
    assertEquals(XYZ.Y, Array.get(result, 1));
    assertEquals(XYZ.Z, Array.get(result, 2));
}