How to use

FilteredFacetExpression

in

io.sphere.sdk.search

@Test
public void throwsExceptionOnAccessingWrongExpression() throws Exception {
  final FilteredFacetExpression<Object> facet = FilteredFacetExpression.of("some wrong facet");
  assertThat(facet.expression()).isEqualTo("some wrong facet");
  assertThatThrownBy(() -> facet.attributePath()).isInstanceOf(IllegalArgumentException.class);
  assertThatThrownBy(() -> facet.value()).isInstanceOf(IllegalArgumentException.class);
  assertThatThrownBy(() -> facet.alias()).isInstanceOf(IllegalArgumentException.class);
  assertThatThrownBy(() -> facet.resultPath()).isInstanceOf(IllegalArgumentException.class);
}

  public FilteredFacetExpression<T, V> only(final Iterable<V> values) {
    return new FilteredFacetExpression<>(this, typeSerializer, values, alias);
  }
}

  @Override
  public boolean equals(Object o) {
    return o != null && o instanceof FacetExpression && toSphereFacet().equals(((FacetExpression) o).toSphereFacet());
  }
}

  public Optional<FilteredFacetResult> getFilteredFacetResult(final FilteredFacetExpression<T, ?> facetExpression) {
    return getFacetResult(facetExpression.resultPath()).map(facetResult -> {
      if (facetResult instanceof FilteredFacetResult) {
        return (FilteredFacetResult) facetResult;
      } else {
        // TODO Use another type of exception once exception task is finished
        throw new RuntimeException("Facet result is not of type FilterFacetResult: " + facetResult);
      }
    });
  }
}

@Test
public void usesAlias() throws Exception {
  final RangeTermFacetSearchModel<ProductProjection, BigDecimal> path = FACET_ATTR.ofNumber("size");
  assertThat(path.withAlias("my-facet").allTerms().expression()).isEqualTo("variants.attributes.size as my-facet");
  assertThat(path.withAlias("my-facet").onlyTerm(valueOf(38)).expression()).isEqualTo("variants.attributes.size:38 as my-facet");
  assertThat(path.withAlias("my-facet").onlyLessThan(valueOf(38)).expression()).isEqualTo("variants.attributes.size:range(* to 38) as my-facet");
}

public FilteredFacetResult getFacetResult(final FilteredFacetExpression<T> facetExpression) {
  return getFilteredFacetResult(facetExpression.resultPath());
}

@Test
public void buildsFilteredFacetExpressionWithAlias() throws Exception {
  final FilteredFacetExpression<Object> facet = FilteredFacetExpression.of(ATTRIBUTE_PATH + TERM_VALUE + AS_ALIAS);
  assertThat(facet.expression()).isEqualTo(ATTRIBUTE_PATH + TERM_VALUE + AS_ALIAS);
  assertThat(facet.attributePath()).isEqualTo(ATTRIBUTE_PATH);
  assertThat(facet.value()).isEqualTo(TERM_VALUE);
  assertThat(facet.alias()).isEqualTo(ALIAS);
  assertThat(facet.resultPath()).isEqualTo(ALIAS);
}

private <T> void testPagedSearchResult(final Consumer<PagedSearchResult<T>> test) {
  final Map<String, FacetResult> facets = new HashMap<>();
  facets.put(TERM_FACET_EXPR.resultPath(), TERM_FACET_RESULT);
  facets.put(RANGE_FACET_EXPR.resultPath(), RANGE_FACET_RESULT);
  facets.put(FILTERED_FACET_EXPR.resultPath(), FILTERED_FACET_RESULT);
  final PagedSearchResult<T> result = pagedSearchResult(facets);
  test.accept(result);
}

@Test
public void buildsFilteredFacetExpression() throws Exception {
  final FilteredFacetExpression<Object> facet = FilteredFacetExpression.of(ATTRIBUTE_PATH + TERM_VALUE);
  assertThat(facet.expression()).isEqualTo(ATTRIBUTE_PATH + TERM_VALUE);
  assertThat(facet.attributePath()).isEqualTo(ATTRIBUTE_PATH);
  assertThat(facet.value()).isEqualTo(TERM_VALUE);
  assertThat(facet.alias()).isNull();
  assertThat(facet.resultPath()).isEqualTo(ATTRIBUTE_PATH);
}

@Test
public void termFacetResult() throws Exception {
  testPagedSearchResult(result -> {
    assertThat(result.getFacetResult(TERM_FACET_EXPR)).isEqualTo(TERM_FACET_RESULT);
    assertThat(result.getTermFacetResult("non-existent")).isNull();
    assertThatThrownBy(() -> result.getTermFacetResult(RANGE_FACET_EXPR.resultPath()))
        .isInstanceOf(IllegalArgumentException.class);
    assertThatThrownBy(() -> result.getTermFacetResult(FILTERED_FACET_EXPR.resultPath()))
        .isInstanceOf(IllegalArgumentException.class);
  });
}

@Test
public void buildsFilteredFacetExpression() throws Exception {
  final FilteredFacetExpression<Object> facet = TermFacetSearchModel.of(ATTRIBUTE_PATH, ofString()).onlyTerm(TERMS);
  assertThat(facet.expression()).isEqualTo(ATTRIBUTE_PATH + TERM_VALUE);
  assertThat(facet.attributePath()).isEqualTo(ATTRIBUTE_PATH);
  assertThat(facet.value()).isEqualTo(TERM_VALUE);
  assertThat(facet.alias()).isNull();
  assertThat(facet.resultPath()).isEqualTo(ATTRIBUTE_PATH);
}

@Test
public void rangeFacetResult() throws Exception {
  testPagedSearchResult(result -> {
    assertThat(result.getFacetResult(RANGE_FACET_EXPR)).isEqualTo(RANGE_FACET_RESULT);
    assertThat(result.getRangeFacetResult("non-existent")).isNull();
    assertThatThrownBy(() -> result.getRangeFacetResult(TERM_FACET_EXPR.resultPath()))
        .isInstanceOf(IllegalArgumentException.class);
    assertThatThrownBy(() -> result.getRangeFacetResult(FILTERED_FACET_EXPR.resultPath()))
        .isInstanceOf(IllegalArgumentException.class);
  });
}

@Test
public void buildsFilteredFacetExpressionWithAlias() throws Exception {
  final FilteredFacetExpression<Object> facet = TermFacetSearchModel.of(ATTRIBUTE_PATH, ofString()).withAlias(ALIAS).onlyTerm(TERMS);
  assertThat(facet.expression()).isEqualTo(ATTRIBUTE_PATH + TERM_VALUE + AS_ALIAS);
  assertThat(facet.attributePath()).isEqualTo(ATTRIBUTE_PATH);
  assertThat(facet.value()).isEqualTo(TERM_VALUE);
  assertThat(facet.alias()).isEqualTo(ALIAS);
  assertThat(facet.resultPath()).isEqualTo(ALIAS);
}

@Test
public void filteredFacetsSupportsAlias() throws Exception {
  final String alias = "my-facet";
  final FilteredFacetExpression<ProductProjection> facetExpr = PRODUCT_MODEL.allVariants().attribute().ofString(ATTR_NAME_COLOR).withAlias(alias).onlyTerm("blue");
  final ProductProjectionSearch search = ProductProjectionSearch.ofStaged().plusFacets(facetExpr);
  testResult(search, result -> {
    assertThat(facetExpr.resultPath()).isEqualTo(alias);
    assertThat(result.getFacetResult(facetExpr).getCount()).isEqualTo(2);
  });
}

@Test
public void termFacetsSupportsAlias() throws Exception {
  final String allFacetAlias = "my-facet";
  final String blueFacetAlias = "my-blue-facet";
  final TermFacetExpression<ProductProjection> allFacetExpr = PRODUCT_MODEL.allVariants().attribute().ofString(ATTR_NAME_COLOR).withAlias(allFacetAlias).allTerms();
  final FilteredFacetExpression<ProductProjection> blueFacetExpr = PRODUCT_MODEL.allVariants().attribute().ofString(ATTR_NAME_COLOR).withAlias(blueFacetAlias).onlyTerm("blue");
  final ProductProjectionSearch search = ProductProjectionSearch.ofStaged()
      .plusFacets(allFacetExpr)
      .plusFacets(blueFacetExpr);
  testResult(search, result -> {
    final TermFacetResult allFacetResult = result.getFacetResult(allFacetExpr);
    final FilteredFacetResult blueFacetResult = result.getFilteredFacetResult(blueFacetAlias);
    assertThat(allFacetExpr.resultPath()).isEqualTo(allFacetAlias);
    assertThat(blueFacetExpr.resultPath()).isEqualTo(blueFacetAlias);
    assertThat(allFacetResult.getTerms()).isEqualTo(asList(TermStats.of("blue", 2L), TermStats.of("red", 1L)));
    assertThat(blueFacetResult.getCount()).isEqualTo(2);
  });
}