/// <summary>
/// Materialize whether at least one result exists for a given ElasticResponse.
/// </summary>
/// <param name="response">ElasticResponse to obtain the existence of a result.</param>
/// <returns>The existence expressed as a boolean. If count is 0, false. Otherwise true</returns>
public object Materialize(ElasticResponse response)
{
if (response.hits.total < 0)
throw new ArgumentOutOfRangeException("response", "Contains a negative number of hits.");
return response.hits.total > 0;
}
public void CountMaterializerThrowsForNegativeCount()
{
var response = new ElasticResponse { hits = new Hits { hits = new List<Hit>(), total = -1 } };
var materializer = new CountElasticMaterializer(typeof(int));
Assert.Throws<ArgumentOutOfRangeException>(() => materializer.Materialize(response));
}
public void ThrowsWhenNegativeHits()
{
const int total = -1;
var response = new ElasticResponse { hits = new Hits { hits = new List<Hit>(), total = total } };
var materializer = new AnyElasticMaterializer();
Assert.Throws<ArgumentOutOfRangeException>(() => materializer.Materialize(response));
}
public void ReturnsTrueWhenOneOrMoreHits(int total)
{
var response = new ElasticResponse { hits = new Hits { hits = new List<Hit>(), total = total } };
var materializer = new AnyElasticMaterializer();
var actual = materializer.Materialize(response);
Assert.Equal(true, actual);
}
public void ReturnsFalseWhenNoHits()
{
const int total = 0;
var response = new ElasticResponse { hits = new Hits { hits = new List<Hit>(), total = total } };
var materializer = new AnyElasticMaterializer();
var actual = materializer.Materialize(response);
Assert.Equal(false, actual);
}
public void CountMaterializerReturnsIntCount()
{
const int expected = int.MaxValue;
var response = new ElasticResponse { hits = new Hits { hits = new List<Hit>(), total = expected } };
var materializer = new CountElasticMaterializer();
var actual = materializer.Materialize(response);
Assert.Equal(expected, actual);
}
public void SimpleSelectProducesValidMaterializer()
{
var translation = ElasticQueryTranslator.Translate(Mapping, "prefix", Robots.Expression);
var response = new ElasticResponse { hits = new Hits { hits = new List<Hit>() } };
Assert.NotNull(translation.Materializer);
var materialized = translation.Materializer.Materialize(response);
Assert.IsAssignableFrom<IEnumerable<Robot>>(materialized);
Assert.Empty((IEnumerable<Robot>)materialized);
}
public void MaterializeWithNoFacetsReturnsBlankList()
{
var materializer = new ListTermlessFacetsElasticMaterializer(r => r, typeof(SampleClass), typeof(string));
var response = new ElasticResponse { facets = new JObject() };
var actual = materializer.Materialize(response);
var actualList = Assert.IsType<List<SampleClass>>(actual);
Assert.Empty(actualList);
}
public void CountMaterializerReturnsLongCount()
{
const long expected = (long)int.MaxValue + 1;
var response = new ElasticResponse { hits = new Hits { hits = new List<Hit>(), total = expected } };
var materializer = new CountElasticMaterializer(typeof(long));
var actual = materializer.Materialize(response);
Assert.Equal(expected, actual);
}
public void MaterializeReturnsEmptyListWhenHitsHitsAreEmpty()
{
var materializer = new ListHitsElasticMaterializer(MaterializerTestHelper.ItemCreator, typeof(SampleClass));
var response = new ElasticResponse { hits = null };
var materialized = materializer.Materialize(response);
var materializedList = Assert.IsType<List<SampleClass>>(materialized);
Assert.Empty(materializedList);
}
/// <summary>
/// Add to response fields that needs to read highlighted info.
/// </summary>
/// <param name="response">ElasticResponse to obtain the existence of a result.</param>
/// <returns>Return result of next materializer</returns>
public override object Materialize(ElasticResponse response)
{
foreach (var hit in response.hits.hits)
{
if (hit.highlight == null) continue;
foreach (var prop in hit.highlight.Properties())
{
hit._source.Add(string.Format("{0}_highlight", prop.Name), prop.Value);
}
}
return base.Materialize(response);
}
static IEnumerable<string> GetResultSummary(ElasticResponse results)
{
if (results == null)
{
yield return "nothing";
}
else
{
if (results.hits != null && results.hits.hits != null && results.hits.hits.Count > 0)
yield return results.hits.hits.Count + " hits";
if (results.facets != null && results.facets.Count > 0)
yield return results.facets.Count + " facets";
}
}
/// <summary>
/// Materialize a single object from the response using the <see cref="projector"/>
/// or return null if there are no applicable facets.
/// </summary>
/// <param name="response">The <see cref="ElasticResponse"/> to materialize facets from.</param>
/// <returns>Object materialized from the response using the projector or null if no corresponding facets.</returns>
public object MaterializeSingle(ElasticResponse response)
{
Argument.EnsureNotNull("response", response);
var facets = response.facets;
if (facets == null || facets.Count <= 0) return null;
var facetsWithoutTerms = facets
.Values()
.Where(x => termlessFacetTypes.Contains(x["_type"].ToString()))
.ToList();
return facetsWithoutTerms.Any()
? projector(new AggregateStatisticalRow(key, facets))
: null;
}
public object Materialize(ElasticResponse response)
{
var enumerator = response.hits.hits.GetEnumerator();
if (!enumerator.MoveNext())
if (defaultIfNone)
return elementType.IsValueType ? Activator.CreateInstance(elementType) : null;
else
throw new InvalidOperationException("Sequence contains no elements");
var current = enumerator.Current;
if (throwIfMoreThanOne && enumerator.MoveNext())
throw new InvalidOperationException("Sequence contains more than one element");
return itemCreator(current);
}
public object Materialize(ElasticResponse response)
{
Argument.EnsureNotNull("response", response);
using (var enumerator = response.hits.hits.GetEnumerator())
{
if (!enumerator.MoveNext())
if (defaultIfNone)
return TypeHelper.CreateDefault(elementType);
else
throw new InvalidOperationException("Sequence contains no elements");
var current = enumerator.Current;
if (throwIfMoreThanOne && enumerator.MoveNext())
throw new InvalidOperationException("Sequence contains more than one element");
return projector(current);
}
}
/// <summary>
/// Process response, then translate it to next materializer.
/// </summary>
/// <param name="response">ElasticResponse to obtain the existence of a result.</param>
/// <returns>Return result of previous materializer, previously processed by self</returns>
public virtual object Materialize(ElasticResponse response)
{
Argument.EnsureNotNull("Next materializer must be setted.",Next);
return Next.Materialize(response);
}
/// <summary>
/// Materialize a single CLR object from the ElasticResponse using the projector or
/// return a default value based on the element type.
/// </summary>
/// <param name="response">ElasticResponse received from Elasticsearch.</param>
/// <returns>CLR object materialized from the response using the projector or default if no corresponding facets.</returns>
public virtual object Materialize(ElasticResponse response)
{
Argument.EnsureNotNull("response", response);
return MaterializeSingle(response) ?? TypeHelper.CreateDefault(elementType);
}
