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

Example 16 with Expression

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

the class PropertyAccessTests method propertyAccessWithArrayIndexOutOfBounds.

@Test
void propertyAccessWithArrayIndexOutOfBounds() {
    EvaluationContext context = SimpleEvaluationContext.forReadOnlyDataBinding().build();
    Expression expression = parser.parseExpression("stringArrayOfThreeItems[3]");
    assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() -> expression.getValue(context, new Inventor())).extracting(SpelEvaluationException::getMessageCode).isEqualTo(SpelMessage.ARRAY_INDEX_OUT_OF_BOUNDS);
}

Example 17 with Expression

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

the class PropertyAccessTests method propertyReadOnlyWithRecordStyle.

@Test
void propertyReadOnlyWithRecordStyle() {
    EvaluationContext context = SimpleEvaluationContext.forReadOnlyDataBinding().build();
    Expression expr = parser.parseExpression("name");
    RecordPerson target1 = new RecordPerson("p1");
    assertThat(expr.getValue(context, target1)).isEqualTo("p1");
    RecordPerson target2 = new RecordPerson("p2");
    assertThat(expr.getValue(context, target2)).isEqualTo("p2");
    assertThatExceptionOfType(SpelEvaluationException.class).isThrownBy(() -> parser.parseExpression("name='p3'").getValue(context, target2));
}

Example 18 with Expression

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

the class PropertyAccessTests method shouldAlwaysUsePropertyAccessorFromEvaluationContext.

@Test
void shouldAlwaysUsePropertyAccessorFromEvaluationContext() {
    SpelExpressionParser parser = new SpelExpressionParser();
    Expression expression = parser.parseExpression("name");
    StandardEvaluationContext context = new StandardEvaluationContext();
    context.addPropertyAccessor(new ConfigurablePropertyAccessor(Collections.singletonMap("name", "Ollie")));
    assertThat(expression.getValue(context)).isEqualTo("Ollie");
    context = new StandardEvaluationContext();
    context.addPropertyAccessor(new ConfigurablePropertyAccessor(Collections.singletonMap("name", "Jens")));
    assertThat(expression.getValue(context)).isEqualTo("Jens");
}

Example 19 with Expression

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

the class SelectionAndProjectionTests method selectLastItemInArray.

@Test
void selectLastItemInArray() throws Exception {
    Expression expression = new SpelExpressionParser().parseRaw("integers.$[#this<5]");
    EvaluationContext context = new StandardEvaluationContext(new ArrayTestBean());
    Object value = expression.getValue(context);
    assertThat(value).isInstanceOf(Integer.class);
    assertThat(value).isEqualTo(4);
}

Example 20 with Expression

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

the class SelectionAndProjectionTests method selectFirstItemInMap.

@Test
@SuppressWarnings("unchecked")
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);
    assertThat(colorsMap.size()).isEqualTo(1);
    assertThat(colorsMap.keySet().iterator().next()).isEqualTo("beige");
}