Introduce Query.returnType attribute

This attribute will be used for aggregations and projections
immutables · Jun 10, 2019 · 14592b8 · 14592b8
1 parent 0e5a292
commit 14592b8
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Showing 3 changed files with 12 additions and 6 deletions.
diff --git a/criteria/common/src/org/immutables/criteria/internal/InternalReader.java b/criteria/common/src/org/immutables/criteria/internal/InternalReader.java
@@ -27,14 +27,14 @@
  */
 public class InternalReader<T> implements Repository.Reader<T> {
 
-  private final ImmutableQuery query;
+  private final ImmutableQuery<T> query;
   private final Backend backend;
 
-  public InternalReader(DocumentCriteria<T> criteria, Backend backend) {
+  public InternalReader(DocumentCriteria<T> criteria, Class<T> returnType, Backend backend) {
-    this(ImmutableQuery.of(criteria), backend);
+    this(ImmutableQuery.of(criteria, returnType), backend);
   }
 
-  private InternalReader(ImmutableQuery query, Backend backend) {
+  private InternalReader(ImmutableQuery<T> query, Backend backend) {
     this.query = Objects.requireNonNull(query, "query");
     this.backend = Objects.requireNonNull(backend, "backend");
   }

diff --git a/criteria/common/src/org/immutables/criteria/internal/Query.java b/criteria/common/src/org/immutables/criteria/internal/Query.java
@@ -28,10 +28,14 @@
 public interface Query<T> extends Backend.Operation<T> {
 
   @Value.Parameter
-  DocumentCriteria<T> criteria();
+  DocumentCriteria<?> criteria();
+
+  @Value.Parameter
+  Class<T> returnType();
 
   OptionalLong limit();
 
   OptionalLong offset();
 
+
 }
diff --git a/value-processor/src/org/immutables/value/processor/CriteriaRepository.generator b/value-processor/src/org/immutables/value/processor/CriteriaRepository.generator
@@ -57,6 +57,8 @@ import java.util.Objects;
 [/if]
 [type.typeDocument.access] class [type.name]Repository implements Repository.Readable<[type.name]> {
 
+  private static final Class<[type.name]> ENTITY_CLASS =  [type.name].class;
+
   private final Backend backend;
 
   public [type.name]Repository(Backend backend) {
@@ -65,7 +67,7 @@ import java.util.Objects;
 
   @Override
   public Repository.Reader<[type.name]> find(DocumentCriteria<[type.name]> criteria) {
-    return new InternalReader<>(criteria, backend);
+    return new InternalReader<>(criteria, ENTITY_CLASS, backend);
   }
 
   @Override