{"action":"created","comment":{"url":"https://api.github.com/repos/spring-projects/spring-integration/pulls/comments/90886902","pull_request_review_id":11400228,"id":90886902,"diff_hunk":"@@ -122,7 +124,7 @@ private static boolean isLambda(Object o) {\n \t * @return the router spec.\n \t */\n \tpublic RecipientListRouterSpec recipient(MessageChannel channel) {\n-\t\treturn recipient(channel, (String) null);\n+\t\treturn recipient(channel, new ValueExpression<Boolean>(Boolean.TRUE));","path":"spring-integration-core/src/main/java/org/springframework/integration/dsl/RecipientListRouterSpec.java","position":21,"original_position":21,"commit_id":"e05b2e4ef11fedaaccc7014359e0da9aa50c7d6e","original_commit_id":"e05b2e4ef11fedaaccc7014359e0da9aa50c7d6e","user":{"login":"artembilan","id":1071590,"avatar_url":"https://avatars.githubusercontent.com/u/1071590?v=3","gravatar_id":"","url":"https://api.github.com/users/artembilan","html_url":"https://github.com/artembilan","followers_url":"https://api.github.com/users/artembilan/followers","following_url":"https://api.github.com/users/artembilan/following{/other_user}","gists_url":"https://api.github.com/users/artembilan/gists{/gist_id}","starred_url":"https://api.github.com/users/artembilan/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/artembilan/subscriptions","organizations_url":"https://api.github.com/users/artembilan/orgs","repos_url":"https://api.github.com/users/artembilan/repos","events_url":"https://api.github.com/users/artembilan/events{/privacy}","received_events_url":"https://api.github.com/users/artembilan/received_events","type":"User","site_admin":false},"body":"I think would be better to rework the target method as:\r\n```\r\npublic RecipientListRouterSpec recipient(MessageChannel channel, Expression expression) {\r\n        if (expression != null) {\r\n              ExpressionEvaluatingSelector selector = new ExpressionEvaluatingSelector(expression);\r\n              this.target.addRecipient(channel, selector);\r\n              this.componentsToRegister.add(selector);\r\n        }\r\n        else {\r\n              this.target.addRecipient(channel);\r\n        }\r\n\treturn _this();\r\n}\r\n```\r\n\r\nto save some memory.\r\n\r\nLet me know and I'll fix on merge","created_at":"2016-12-05T15:29:03Z","updated_at":"2016-12-05T15:29:03Z","html_url":"https://github.com/spring-projects/spring-integration/pull/1995#discussion_r90886902","pull_request_url":"https://api.github.com/repos/spring-projects/spring-integration/pulls/1995","_links":{"self":{"href":"https://api.github.com/repos/spring-projects/spring-integration/pulls/comments/90886902"},"html":{"href":"https://github.com/spring-projects/spring-integration/pull/1995#discussion_r90886902"},"pull_request":{"href":"https://api.github.com/repos/spring-projects/spring-integration/pulls/1995"}}},"pull_request":{"url":"https://api.github.com/repos/spring-projects/spring-integration/pulls/1995","id":96409288,"html_url":"https://github.com/spring-projects/spring-integration/pull/1995","diff_url":"https://github.com/spring-projects/spring-integration/pull/1995.diff","patch_url":"https://github.com/spring-projects/spring-integration/pull/1995.patch","issue_url":"https://api.github.com/repos/spring-projects/spring-integration/issues/1995","number":1995,"state":"open","locked":false,"title":"INT-4180: RecipientListRouterSpec Fix","user":{"login":"garyrussell","id":483832,"avatar_url":"https://avatars.githubusercontent.com/u/483832?v=3","gravatar_id":"","url":"https://api.github.com/users/garyrussell","html_url":"https://github.com/garyrussell","followers_url":"https://api.github.com/users/garyrussell/followers","following_url":"https://api.github.com/users/garyrussell/following{/other_user}","gists_url":"https://api.github.com/users/garyrussell/gists{/gist_id}","starred_url":"https://api.github.com/users/garyrussell/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/garyrussell/subscriptions","organizations_url":"https://api.github.com/users/garyrussell/orgs","repos_url":"https://api.github.com/users/garyrussell/repos","events_url":"https://api.github.com/users/garyrussell/events{/privacy}","received_events_url":"https://api.github.com/users/garyrussell/received_events","type":"User","site_admin":false},"body":"JIRA: https://jira.spring.io/browse/INT-4180\r\n\r\nUse true `ValueExpression` for recipient() without selector.\r\n\r\nAssert selector epresion string is not null or empty.\r\n\r\nAdd 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