Clojure/seeseaw.core/table lazy seq检索失败
我的“(列表项目)”方法从SQLITE数据库中查询出一个映射Clojure/seeseaw.core/table lazy seq检索失败,clojure,jtable,lazy-sequences,seesaw,Clojure,Jtable,Lazy Sequences,Seesaw,我的“(列表项目)”方法从SQLITE数据库中查询出一个映射 (doall (apply prn (pm.models.db/list-projects))) pm.core==>{:id 1, :name "MyTestProj", :owner "mbc", :date "2017-12-19 13:12:45"} {:id 2, :name "newproject1", :owner "mbc", :date "2017-12-19 13:12:45"} {:id
(doall (apply prn (pm.models.db/list-projects)))
pm.core==>{:id 1, :name "MyTestProj", :owner "mbc", :date "2017-12-19 13:12:45"} {:id 2, :name "newproject1", :owner "mbc", :date "2017-12-19 13:12:45"} {:id 3, :name "newproject1", :owner "mbc", :date "2017-12-19 13:12:45"} {:id 4, :name "abc", :owner "def", :date "2017-12-19 13:12:45"} {:id 5, :name "abc", :owner "def", :date "2017-12-19 13:12:45"} {:id 6, :name "abc", :owner "def", :date "2017-12-19 13:12:45"} {:id 7, :name "newproject1", :owner "mbc", :date "2017-12-19 13:12:45"} {:id 8, :name "", :owner "", :date strong text"2017-12-19 13:12:45"}
在构造seesaw.core/frame/mig-panel/table(JFrame/JPanel/JTable)时,我希望使用:row属性将这些结果填充到seesaw.core/table(Java JTable)
如果我插入映射{:id 1,:name“MyTestProj”,:owner“mbc”,:date“2017-12-19 13:12:45”}{:id……。}{{{}{}{}
直接来说,它工作正常,表中的行被正确填充,所以(doall(apply prn(pm.models.db/list projects))的输出格式就是我所需要的
如何在seesaw.core/mig-panel的上下文中检索(我假定)惰性seq?
谢谢
莫蒂默
(pm.models.db/list projects)生成的列表可以直接用作:rows键(无括号)的值。
:行(pm.models.db/列表项目)
感谢Carcigenicate的建议。您不需要
doall
。面板需要实现列表才能使用它(虽然这里不是问题)。如果您希望(应用prn
对行列表求值),那么您可能不应该将:行
包装在向量中。我不希望这会导致错误,但如果我认为是错误的。如果应该只是:行(应用prn(pm.models.db/list projects))
。感谢您的提示。解决方案是:行(pm.models.db/list projects)mig面板需要矢量或地图,我可以直接使用查询出来的矢量。
(def main-panel
(mig-panel
:constraints ["fill, ins 0"]
:items [[(seesaw.core/table
:id :tbl1
:size [640 :by 480]
:model [:columns [:id :name :owner :date]
:rows [(doall (apply prn (pm.models.db/list-projects)))]
]) "grow"]
]))
2. Unhandled clojure.lang.Compiler$CompilerException
Error compiling form-init4108264894568019320.clj at (44:16)
ang.Thread/run
1. Caused by java.lang.IllegalArgumentException
row must be a map or vector, got null
pm.core> (pm.models.db/list-projects)
({:id 1, :name "MyTestProj", :owner "mbc", :date "2017-12-19 13:12:45"} {:id 2, :name "newproject1", :owner "mbc", :date "2017-12-19 13:12:45"} {:id 3, :name "newproject1", :owner "mbc", :date "2017-12-19 13:12:45"} {:id 4, :name "abc", :owner "def", :date "2017-12-19 13:12:45"} {:id 5, :name "abc", :owner "def", :date "2017-12-19 13:12:45"} )
pm.core>