本文整理了Java中org.apache.jena.sparql.algebra.Algebra.toQuadForm()方法的一些代码示例，展示了Algebra.toQuadForm()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Algebra.toQuadForm()方法的具体详情如下：
包路径：org.apache.jena.sparql.algebra.Algebra
类名称：Algebra
方法名：toQuadForm

Algebra.toQuadForm介绍

[英]Turn an algebra expression into quadpattern form
[中]将代数表达式转换为四元模式形式

代码示例

代码示例来源：origin: apache/jena

@Override
protected Op modifyOp(Op op)
{ 
  op = super.modifyOp(op) ;
  op = Algebra.toQuadForm(op) ;
  return op ;
}

代码示例来源：origin: apache/jena

@Override
protected Op modifyOp(Op op)
{ 
  op = super.modifyOp(op) ;
  op = Algebra.toQuadForm(op) ;
  return op ;
}

代码示例来源：origin: apache/jena

private static void outputAlgebraQuads(ServletOutputStream outStream, final Query query, boolean lineNumbers) throws IOException
{
  outStream.println("<p>Quad structure:</p>") ;
  final Op op = Algebra.toQuadForm(Algebra.compile(query)) ;
  outputQueryOp(outStream, query, op, lineNumbers) ;
}

代码示例来源：origin: org.apache.jena/jena-fuseki-core

private static void outputAlgebraQuads(ServletOutputStream outStream, final Query query, boolean lineNumbers) throws IOException
{
  outStream.println("<p>Quad structure:</p>") ;
  final Op op = Algebra.toQuadForm(Algebra.compile(query)) ;
  outputQueryOp(outStream, query, op, lineNumbers) ;
}

代码示例来源：origin: SmartDataAnalytics/jena-sparql-api

public static SparqlView create(String name, QuadPattern quadPattern, Element element) {
  Op tmp = Algebra.compile(element);
  Op op = Algebra.toQuadForm(tmp);
  SparqlView result = create(name, quadPattern, op);
  return result;
}

代码示例来源：origin: org.aksw.jena-sparql-api/jena-sparql-api-algebra

public static ProjectedQuadFilterPattern transform(Element element) {
  Op op = Algebra.compile(element);
  op = Algebra.toQuadForm(op);
  ProjectedQuadFilterPattern result = transform(op);
  return result;
}

代码示例来源：origin: SmartDataAnalytics/jena-sparql-api

public static ProjectedQuadFilterPattern transform(Element element) {
  Op op = Algebra.compile(element);
  op = Algebra.toQuadForm(op);
  ProjectedQuadFilterPattern result = transform(op);
  return result;
}

代码示例来源：origin: apache/jena

private static void outputAlgebraOptQuads(ServletOutputStream outStream, final Query query, boolean lineNumbers) throws IOException
{
  outStream.println("<p>Alebgra, with general quads optimizations:</p>") ;
  final Op op = Algebra.optimize(Algebra.toQuadForm(Algebra.compile(query))) ;
  outputQueryOp(outStream, query, op, lineNumbers) ;
}

代码示例来源：origin: org.apache.jena/jena-fuseki-core

private static void outputAlgebraOptQuads(ServletOutputStream outStream, final Query query, boolean lineNumbers) throws IOException
{
  outStream.println("<p>Alebgra, with general quads optimizations:</p>") ;
  final Op op = Algebra.optimize(Algebra.toQuadForm(Algebra.compile(query))) ;
  outputQueryOp(outStream, query, op, lineNumbers) ;
}

代码示例来源：origin: org.aksw.jena-sparql-api/jena-sparql-api-algebra

public static ProjectedQuadFilterPattern transform(Query query) {
  Op op = Algebra.compile(query);
  op = Algebra.toQuadForm(op);
  op = TransformReplaceConstants.transform(op);
  ProjectedQuadFilterPattern result = transform(op);
  return result;
}

代码示例来源：origin: org.aksw.jena-sparql-api/jena-sparql-api-algebra

public static Graph queryToGraph(Query query) {
  Op op = Algebra.toQuadForm(Algebra.compile(query));
  Op nop = normalizeOp(op, false);
  Graph result = queryToGraph(nop);
  return result;
}

代码示例来源：origin: apache/jena

private static void algebraQuads(JsonBuilder obj, Query query) {
  Op op = Algebra.compile(query) ;
  op = Algebra.toQuadForm(op) ;
  obj.key(jAlgebraQuads).value(string(query, op)) ;
}

代码示例来源：origin: apache/jena

public static void printQuad(IndentedWriter out, Query query, boolean printOptimized)
  {
    Op op = Algebra.compile(query) ;
    if ( printOptimized )
      op =  Algebra.optimize(op) ;
    op = Algebra.toQuadForm(op) ;
    WriterSSE.out(out, op, query) ;
//        SerializationContext sCxt = new SerializationContext(query) ;
//        op.output(out, sCxt) ;
    out.flush() ;
  }
}

代码示例来源：origin: apache/jena

private static void algebraOptQuads(JsonBuilder obj, Query query) {
  Op op = Algebra.compile(query) ;
  op = Algebra.toQuadForm(op) ;
  op = Algebra.optimize(op) ;
  obj.key(jAlgebraOptQuads).value(string(query, op)) ;
}

代码示例来源：origin: apache/jena

@Override
protected Op modifyOp(Op op)
{
  op = Substitute.substitute(op, getStartBinding()) ;
  // Optimize (high-level)
  op = super.modifyOp(op) ;
  // Quadification
  // Only apply if not a rewritten DynamicDataset
  if ( ! isDynamicDataset() )
    op = Algebra.toQuadForm(op) ;
  
  // Record it.
  setOp(op) ;
  return op ;
}

代码示例来源：origin: apache/jena

protected Op op(String pattern, Mode mode) {
    Op op = SSE.parseOp(pattern) ;
    if ( mode == Mode.QUADS )
      op = Algebra.toQuadForm(op) ;
    else if ( mode == Mode.QUADBLOCKS )
      op = Algebra.toQuadBlockForm(op) ;
    return op ;
  }
}

代码示例来源：origin: apache/jena

@Override
protected Op modifyOp(Op op)
{
  op = Substitute.substitute(op, getStartBinding()) ;
  // Optimize (high-level)
  op = super.modifyOp(op) ;
  // Quadification
  // Only apply if not a rewritten DynamicDataset
  if ( ! isDynamicDataset() )
    op = Algebra.toQuadForm(op) ;
  
  // Record it.
  setOp(op) ;
  return op ;
}

代码示例来源：origin: apache/jena

/** query->algebra/quads->OpAsQuery->query */
private static Query[] roundTripQueryQuad(String query) {
  Query orig = QueryFactory.create(query, Syntax.syntaxSPARQL_11);
  Op toReconstruct = Algebra.compile(orig);
  toReconstruct = Algebra.toQuadForm(toReconstruct);
  Query got = OpAsQuery.asQuery(toReconstruct);
  Query[] r = { orig, got };
  return r;
}

代码示例来源：origin: apache/jena

private static void test4(String pattern, String... joinForm)
{
  Query q = QueryFactory.create("PREFIX : <http://example/> SELECT * "+pattern) ;
  Op op = Algebra.compile(q.getQueryPattern()) ;
  op = Algebra.toQuadForm(op) ;
  test(op, joinForm) ;
}

代码示例来源：origin: apache/jena

private static void test(String patternString, boolean optimize, String... strExpected)
  {
    Query q = QueryFactory.create("SELECT * WHERE "+patternString) ;
    Op op = Algebra.compile(q) ;
    if ( optimize )
      op = Algebra.optimize(op) ;
    op = Algebra.toQuadForm(op) ;
    Op op2 = SSE.parseOp(StrUtils.strjoinNL(strExpected)) ;
    assertEquals(op2, op) ;
  }
}