add feature #825

json-path/src/main/java/com/jayway/jsonpath/internal/JsonContext.java

@@ -29,8 +29,10 @@ import com.jayway.jsonpath.spi.cache.CacheProvider;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
+import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
+import java.util.stream.Stream;
 
 import static com.jayway.jsonpath.JsonPath.compile;
 import static com.jayway.jsonpath.internal.Utils.notEmpty;
@@ -79,6 +81,9 @@ public class JsonContext implements DocumentContext {
 
     @Override
     public <T> T read(String path, Class<T> type, Predicate... filters) {
+        if (type == Stream.class) {
+            return (T) convert(read(path, filters), List.class, configuration).stream();
+        }
         return convert(read(path, filters), type, configuration);
     }
 
@@ -90,6 +95,9 @@ public class JsonContext implements DocumentContext {
 
     @Override
     public <T> T read(JsonPath path, Class<T> type) {
+        if (type == Stream.class) {
+            return (T) convert(read(path), List.class, configuration).stream();
+        }
         return convert(read(path), type, configuration);
     }
 

json-path/src/test/java/com/jayway/jsonpath/Issue_825.java

@@ -0,0 +1,21 @@
+package com.jayway.jsonpath;
+
+import org.junit.Test;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+import static java.util.Arrays.asList;
+import static org.assertj.core.api.Assertions.assertThat;
+
+public class Issue_825 extends BaseTest {
+    @Test
+    public void double_stream_test() {
+        Stream<Double> stream = JsonPath.parse(JSON_DOCUMENT).read("store.book[?(@.display-price <= $.max-price)].display-price", Stream.class);
+        assertThat(stream.collect(Collectors.toList())).containsAll(asList(8.95D, 8.99D));
+    }
+
+    @Test
+    public void string_stream_test() {
+        Stream<String> stream = JsonPath.parse(JSON_DOCUMENT).read("$.store.book.[*].title", Stream.class);
+        assertThat(stream.collect(Collectors.toList())).containsAll(asList("Sayings of the Century", "Sword of Honour", "Moby Dick", "The Lord of the Rings"));
+    }
+}