From d5ed89b946297270ec28abf44bef2371a06f1f4f Mon Sep 17 00:00:00 2001
From: Hilko Bengen <bengen@debian.org>
Date: Sat, 7 Jun 2014 12:02:12 +0200
Subject: Imported Upstream version 1.0.3

---
 .../query-dsl/queries/has-parent-query.asciidoc    | 57 ++++++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 docs/reference/query-dsl/queries/has-parent-query.asciidoc

(limited to 'docs/reference/query-dsl/queries/has-parent-query.asciidoc')

diff --git a/docs/reference/query-dsl/queries/has-parent-query.asciidoc b/docs/reference/query-dsl/queries/has-parent-query.asciidoc
new file mode 100644
index 0000000..8ef1f4e
--- /dev/null
+++ b/docs/reference/query-dsl/queries/has-parent-query.asciidoc
@@ -0,0 +1,57 @@
+[[query-dsl-has-parent-query]]
+=== Has Parent Query
+
+The `has_parent` query works the same as the
+<<query-dsl-has-parent-filter,has_parent>>
+filter, by automatically wrapping the filter with a constant_score (when
+using the default score type). It has the same syntax as the
+<<query-dsl-has-parent-filter,has_parent>>
+filter. 
+
+[source,js]
+--------------------------------------------------
+{
+    "has_parent" : {
+        "parent_type" : "blog",
+        "query" : {
+            "term" : {
+                "tag" : "something"
+            }
+        }
+    }
+}
+--------------------------------------------------
+
+[float]
+==== Scoring capabilities
+
+The `has_parent` also has scoring support. The
+supported score types are `score` or `none`. The default is `none` and
+this ignores the score from the parent document. The score is in this
+case equal to the boost on the `has_parent` query (Defaults to 1). If
+the score type is set to `score`, then the score of the matching parent
+document is aggregated into the child documents belonging to the
+matching parent document. The score type can be specified with the
+`score_type` field inside the `has_parent` query:
+
+[source,js]
+--------------------------------------------------
+{
+    "has_parent" : {
+        "parent_type" : "blog",
+        "score_type" : "score",
+        "query" : {
+            "term" : {
+                "tag" : "something"
+            }
+        }
+    }
+}
+--------------------------------------------------
+
+[float]
+==== Memory Considerations
+
+With the current implementation, all `_id` values are loaded to memory
+(heap) in order to support fast lookups, so make sure there is enough
+memory for it.
-- 
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