本文整理汇总了Java中org.apache.jena.sparql.engine.QueryIterator.close方法的典型用法代码示例。如果您正苦于以下问题：Java QueryIterator.close方法的具体用法？Java QueryIterator.close怎么用？Java QueryIterator.close使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类org.apache.jena.sparql.engine.QueryIterator的用法示例。
在下文中一共展示了QueryIterator.close方法的3个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: main
import org.apache.jena.sparql.engine.QueryIterator; //导入方法依赖的package包/类
public static void main(String []args)
{
String s = "SELECT DISTINCT ?s { ?s ?p ?o }";
// Parse
Query query = QueryFactory.create(s) ;
System.out.println(query) ;
// Generate algebra
Op op = Algebra.compile(query) ;
op = Algebra.optimize(op) ;
System.out.println(op) ;
// Execute it.
QueryIterator qIter = Algebra.exec(op, ExQuerySelect1.createModel()) ;
// Results
for ( ; qIter.hasNext() ; )
{
Binding b = qIter.nextBinding() ;
System.out.println(b) ;
}
qIter.close() ;
}
示例2: testMultipleParallelIterators
import org.apache.jena.sparql.engine.QueryIterator; //导入方法依赖的package包/类
@Test
public void testMultipleParallelIterators() throws IOException {
CSVOptions options = new CSVOptions();
options.setColumnNamesInFirstRow(false);
CSVTable table = new CSVTable(InputStreamSource.fromString("Alice,Smith\nBob,Cook"), options);
List<Var> vars = vars("a", "b", "ROWNUM");
Binding row1 = binding(vars, "\"Alice\"", "\"Smith\"", "1");
Binding row2 = binding(vars, "\"Bob\"", "\"Cook\"", "2");
QueryIterator it1 = table.iterator(null);
assertEquals(row1, it1.next());
QueryIterator it2 = table.iterator(null);
QueryIterator it3 = table.iterator(null);
assertEquals(row1, it2.next());
assertEquals(row2, it1.next());
it2.close();
assertEquals(row1, it3.next());
assertEquals(row2, it3.next());
}
示例3: main
import org.apache.jena.sparql.engine.QueryIterator; //导入方法依赖的package包/类
public static void main (String[] argv)
{
String BASE = "http://example/" ;
BasicPattern bp = new BasicPattern() ;
Var var_x = Var.alloc("x") ;
Var var_z = Var.alloc("z") ;
// ---- Build expression
bp.add(new Triple(var_x, NodeFactory.createURI(BASE+"p"), var_z)) ;
Op op = new OpBGP(bp) ;
//Expr expr = ExprUtils.parse("?z < 2 ") ;
Expr expr = new E_LessThan(new ExprVar(var_z), NodeValue.makeNodeInteger(2)) ;
op = OpFilter.filter(expr, op) ;
// ---- Example setup
Model m = makeModel() ;
m.write(System.out, "TTL") ;
System.out.println("--------------") ;
System.out.print(op) ;
System.out.println("--------------") ;
// ---- Execute expression
QueryIterator qIter = Algebra.exec(op, m.getGraph()) ;
// -------- Either read the query iterator directly ...
if ( false )
{
for ( ; qIter.hasNext() ; )
{
Binding b = qIter.nextBinding() ;
Node n = b.get(var_x) ;
System.out.println(NodeFmtLib.displayStr(n)) ;
System.out.println(b) ;
}
qIter.close() ;
}
else
{
// -------- Or make ResultSet from it (but not both - reading an
// iterator consumes the current solution)
List<String> varNames = new ArrayList<String>() ;
varNames.add("x") ;
varNames.add("z") ;
ResultSet rs = new ResultSetStream(varNames, m, qIter);
ResultSetFormatter.out(rs) ;
qIter.close() ;
}
System.exit(0) ;
}