自己构造了个超级简单的本体，就一个class，下面有5个属性。
从网上找了个查询出单个对象的所有数据，机器上运行的很正常，能够把对象C-000301的所有列提取出来，语法如下：
String prefix = "PREFIX owl: <http://www.w3.org/2002/07/owl#>"+
"PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>"+
"PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> " +
"PREFIX base:<http://www.owl-ontologies.com/Ontology1310193754.owl#> ";
String k="base:C-000301 ";
//String select = "SELECT ?dormitory ?major ?sex ?age ?attend ";
String select = "SELECT * ";
String where = "WHERE { "+
"OPTIONAL { "+ k +
" base:caseName ?caseName ."+
" }"+
"OPTIONAL { "+ k +
" base:caseDescription ?caseDescription ."+
" }"+
"OPTIONAL { "+ k +
" base:caseConsignor ?caseConsignor ."+
" }"+
"OPTIONAL { "+ k +
" base:caseTime ?caseTime ."+
" }"+
"OPTIONAL { "+ k +
" base:caseDetail ?caseDetail ."+
" }"+
" }";
现在我的owl里面有5个对象，全部提取出来的语法怎么写呢，类似sql里面select * from case的语句？
谢谢各位了！！
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W3CHINA.ORG讨论区 - Web新技术讨论 → 『 Semantic Web(语义Web)/描述逻辑/本体 』 → 请教一个jena的查询出所有数据的语法
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2011/7/9 17:08:00
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请教一个jena的查询出所有数据的语法
