我遇到了Progress READ-JSON的问题,它不接受WRITE-JSON输出的JSON。我们正在使用具有嵌套数据关系的数据集进行跟踪更改。
stack
此示例生成以下输出:
OUTPUT TO "debug.txt".
DEFINE VARIABLE lcString AS LONGCHAR NO-UNDO.
DEFINE VARIABLE hdsBox AS HANDLE NO-UNDO.
DEFINE VARIABLE lOk AS LOGICAL NO-UNDO.
DEFINE TEMP-TABLE ttEmployee NO-UNDO
BEFORE-TABLE ttEmployeeBefore
FIELD eid AS INTEGER
FIELD empname AS CHAR.
DEFINE TEMP-TABLE ttBox NO-UNDO
BEFORE-TABLE ttBoxBefore
FIELD eid AS INTEGER SERIALIZE-HIDDEN
FIELD boxid AS INTEGER
FIELD boxdesc AS CHAR.
DEFINE DATASET dsBox FOR ttEmployee, ttBox
DATA-RELATION relat1 FOR ttEmployee, ttBox RELATION-FIELDS (ttEmployee.eid, ttBox.eid) NESTED.
CREATE ttEmployee.
CREATE ttBox.
ASSIGN ttEmployee.eid = 1
ttEmployee.empname = "Ian"
ttBox.eid = 1
ttBox.boxid = 10
ttBox.boxdesc = "Ians box".
hdsBox = DATASET dsBox:HANDLE.
ASSIGN TEMP-TABLE ttEmployee:TRACKING-CHANGES = YES
TEMP-TABLE ttBox:TRACKING-CHANGES = YES.
CREATE ttBox.
ASSIGN ttBox.eid = 1
ttBox.boxid = 11
ttBox.boxdesc = "Stewarts box"
/*ttEmployee.empname = "Stewart"*/ .
ASSIGN lOk = hdsBox:WRITE-JSON("LONGCHAR", lcString,FALSE , "UTF-8", FALSE, FALSE, TRUE).
ASSIGN TEMP-TABLE ttEmployee:TRACKING-CHANGES = NO
TEMP-TABLE ttBox:TRACKING-CHANGES = NO.
MESSAGE lOk ERROR-STATUS:GET-MESSAGE(1) SKIP.
MESSAGE STRING(lcString) SKIP.
ASSIGN lOk = hdsBox:READ-JSON("LONGCHAR":U, lcString, "EMPTY":U) NO-ERROR.
MESSAGE lOk ERROR-STATUS:GET-MESSAGE(1) SKIP.
如果我在第35行发表评论,那么它会起作用,这让我相信这是一个进步错误。
我正在使用OpenEdge 11.4。
答案 0 :(得分:1)
这是一个进步错误。要修复,我需要在JSON的before-table中插入一个无意义的字段。
"prods:before":{"Progress11.4bug":"Need this string or Progress will barf"}
由于某种原因,进度不喜欢前表是空的。