{"action":"created","comment":{"url":"https://api.github.com/repos/apache/spark/pulls/comments/34856606","id":34856606,"diff_hunk":"@@ -0,0 +1,113 @@\n+/*\n+ * Licensed to the Apache Software Foundation (ASF) under one or more\n+ * contributor license agreements.  See the NOTICE file distributed with\n+ * this work for additional information regarding copyright ownership.\n+ * The ASF licenses this file to You under the Apache License, Version 2.0\n+ * (the \"License\"); you may not use this file except in compliance with\n+ * the License.  You may obtain a copy of the License at\n+ *\n+ *    http://www.apache.org/licenses/LICENSE-2.0\n+ *\n+ * Unless required by applicable law or agreed to in writing, software\n+ * distributed under the License is distributed on an \"AS IS\" BASIS,\n+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\n+ * See the License for the specific language governing permissions and\n+ * limitations under the License.\n+ */\n+\n+package org.apache.spark.sql.catalyst.expressions.codegen\n+\n+import org.apache.spark.sql.catalyst.expressions._\n+import org.apache.spark.sql.types.{BinaryType, StringType}\n+\n+\n+/**\n+ * Generates a [[Projection]] that returns an [[UnsafeRow]].\n+ *\n+ * Note: The returned UnsafeRow will be pointed to a scratch buffer inside the projection.\n+ */\n+object GenerateUnsafeProjection extends CodeGenerator[Seq[Expression], UnsafeProjection] {\n+\n+  protected def canonicalize(in: Seq[Expression]): Seq[Expression] =\n+    in.map(ExpressionCanonicalizer.execute)\n+\n+  protected def bind(in: Seq[Expression], inputSchema: Seq[Attribute]): Seq[Expression] =\n+    in.map(BindReferences.bindReference(_, inputSchema))\n+\n+  protected def create(expressions: Seq[Expression]): UnsafeProjection = {\n+    val ctx = newCodeGenContext()\n+    val codes = expressions.map(_.gen(ctx))","path":"sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/codegen/GenerateUnsafeProjection.scala","position":39,"original_position":39,"commit_id":"70e231c565ed2f626fbfe6f69a27ee42672e186e","original_commit_id":"70e231c565ed2f626fbfe6f69a27ee42672e186e","user":{"login":"JoshRosen","id":50748,"avatar_url":"https://avatars.githubusercontent.com/u/50748?v=3","gravatar_id":"","url":"https://api.github.com/users/JoshRosen","html_url":"https://github.com/JoshRosen","followers_url":"https://api.github.com/users/JoshRosen/followers","following_url":"https://api.github.com/users/JoshRosen/following{/other_user}","gists_url":"https://api.github.com/users/JoshRosen/gists{/gist_id}","starred_url":"https://api.github.com/users/JoshRosen/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/JoshRosen/subscriptions","organizations_url":"https://api.github.com/users/JoshRosen/orgs","repos_url":"https://api.github.com/users/JoshRosen/repos","events_url":"https://api.github.com/users/JoshRosen/events{/privacy}","received_events_url":"https://api.github.com/users/JoshRosen/received_events","type":"User","site_admin":false},"body":"This is a confusing variable name.","created_at":"2015-07-17T01:51:48Z","updated_at":"2015-07-17T01:51:48Z","html_url":"https://github.com/apache/spark/pull/7437#discussion_r34856606","pull_request_url":"https://api.github.com/repos/apache/spark/pulls/7437","_links":{"self":{"href":"https://api.github.com/repos/apache/spark/pulls/comments/34856606"},"html":{"href":"https://github.com/apache/spark/pull/7437#discussion_r34856606"},"pull_request":{"href":"https://api.github.com/repos/apache/spark/pulls/7437"}}},"pull_request":{"url":"https://api.github.com/repos/apache/spark/pulls/7437","id":40091834,"html_url":"https://github.com/apache/spark/pull/7437","diff_url":"https://github.com/apache/spark/pull/7437.diff","patch_url":"https://github.com/apache/spark/pull/7437.patch","issue_url":"https://api.github.com/repos/apache/spark/issues/7437","number":7437,"state":"open","locked":false,"title":"[SPARK-9022] [SQL] Generated projections for UnsafeRow","user":{"login":"davies","id":40902,"avatar_url":"https://avatars.githubusercontent.com/u/40902?v=3","gravatar_id":"","url":"https://api.github.com/users/davies","html_url":"https://github.com/davies","followers_url":"https://api.github.com/users/davies/followers","following_url":"https://api.github.com/users/davies/following{/other_user}","gists_url":"https://api.github.com/users/davies/gists{/gist_id}","starred_url":"https://api.github.com/users/davies/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/davies/subscriptions","organizations_url":"https://api.github.com/users/davies/orgs","repos_url":"https://api.github.com/users/davies/repos","events_url":"https://api.github.com/users/davies/events{/privacy}","received_events_url":"https://api.github.com/users/davies/received_events","type":"User","site_admin":false},"body":"Added two projections: GenerateUnsafeProjection and FromUnsafeProjection, which could be used to convert UnsafeRow from/to GenericInternalRow.\r\n\r\nThey will re-use the buffer during projection, similar to MutableProjection (without all the interface MutableProjection has).\r\n\r\ncc @rxin @JoshRosen","created_at":"2015-07-16T03:33:41Z","updated_at":"2015-07-17T01:51:48Z","closed_at":null,"merged_at":null,"merge_commit_sha":"f04b69486c2a1c6bc707e4801be3027e54ac8456","assignee":null,"milestone":null,"commits_url":"https://api.github.com/repos/apache/spark/pulls/7437/commits","review_comments_url":"https://api.github.com/repos/apache/spark/pulls/7437/comments","review_comment_url":"https://api.github.com/repos/apache/spark/pulls/comments{/number}","comments_url":"https://api.github.com/repos/apache/spark/issues/7437/comments","statuses_url":"https://api.github.com/repos/apache/spark/statuses/70e231c565ed2f626fbfe6f69a27ee42672e186e","head":{"label":"davies:unsafe_proj2","ref":"unsafe_proj2","sha":"70e231c565ed2f626fbfe6f69a27ee42672e186e","user":{"login":"davies","id":40902,"avatar_url":"https://avatars.githubusercontent.com/u/40902?v=3","gravatar_id":"","url":"https://api.github.com/users/davies","html_url":"https://github.com/davies","followers_url":"https://api.github.com/users/davies/followers","following_url":"https://api.github.com/users/davies/following{/other_user}","gists_url":"https://api.github.com/users/davies/gists{/gist_id}","starred_url":"https://api.github.com/users/davies/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/davies/subscriptions","organizations_url":"https://api.github.com/users/davies/orgs","repos_url":"https://api.github.com/users/davies/repos","events_url":"https://api.github.com/users/davies/events{/privacy}","received_events_url":"https://api.github.com/users/davies/received_events","type":"User","site_admin":false},"repo":{"id":21724875,"name":"spark","full_name":"davies/spark","owner":{"login":"davies","id":40902,"avatar_url":"https://avatars.githubusercontent.com/u/40902?v=3","gravatar_id":"","url":"https://api.github.com/users/davies","html_url":"https://github.com/davies","followers_url":"https://api.github.com/users/davies/followers","following_url":"https://api.github.com/users/davies/following{/other_user}","gists_url":"https://api.github.com/users/davies/gists{/gist_id}","starred_url":"https://api.github.com/users/davies/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/davies/subscriptions","organizations_url":"https://api.github.com/users/davies/orgs","repos_url":"https://api.github.com/users/davies/repos","events_url":"https://api.github.com/users/davies/events{/privacy}","received_events_url":"https://api.github.com/users/davies/received_events","type":"User","site_admin":false},"private":false,"html_url":"https://github.com/davies/spark","description":"Mirror 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