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Java OpVars类代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了Java中com.hp.hpl.jena.sparql.algebra.OpVars的典型用法代码示例。如果您正苦于以下问题:Java OpVars类的具体用法?Java OpVars怎么用?Java OpVars使用的例子?那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。



OpVars类属于com.hp.hpl.jena.sparql.algebra包,在下文中一共展示了OpVars类的9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,您的评价将有助于我们的系统推荐出更棒的Java代码示例。

示例1: transform

import com.hp.hpl.jena.sparql.algebra.OpVars; //导入依赖的package包/类
@Override
public Op transform(OpFilter opFilter, Op subOp) {
    if ( ! (subOp instanceof OpBGP) )
        return super.transform(opFilter, subOp);

    ExprList exprs = opFilter.getExprs();
    Op op = subOp;
    // Variables set
    Set<Var> patternVars = OpVars.visibleVars(op);

    // Any assignments must go inside filters so the filters see the assignments.
    ExprList exprs2 = new ExprList();

    for (  Expr e : exprs.getList() ) {
        Op op2 = processFilterWorker(e, op, patternVars);
        if ( op2 == null )
            exprs2.add(e);
        else
            op = op2;
    }

    // Place any filter expressions around the processed sub op.
    if ( exprs2.size() > 0 )
        op = OpFilter.filter(exprs2, op);
    return op;
}
 
开发者ID:aschaetzle,项目名称:S2RDF,代码行数:27,代码来源:TransformFilterVarEquality.java


示例2: transform

import com.hp.hpl.jena.sparql.algebra.OpVars; //导入依赖的package包/类
@Override
public Op transform(OpFilter opFilter, Op subOp) {
	if ( ! (subOp instanceof OpBGP) )
		return super.transform(opFilter, subOp);

	ExprList exprs = opFilter.getExprs();
	Op op = subOp;
	// Variables set
	Set<Var> patternVars = OpVars.visibleVars(op);

	// Any assignments must go inside filters so the filters see the assignments.
	ExprList exprs2 = new ExprList();

	for (  Expr e : exprs.getList() ) {
		Op op2 = processFilterWorker(e, op, patternVars);
		if ( op2 == null )
			exprs2.add(e);
		else
			op = op2;
	}

	// Place any filter expressions around the processed sub op.
	if ( exprs2.size() > 0 )
		op = OpFilter.filter(exprs2, op);
	return op;
}
 
开发者ID:aschaetzle,项目名称:Sempala,代码行数:27,代码来源:TransformFilterVarEquality.java


示例3: visit

import com.hp.hpl.jena.sparql.algebra.OpVars; //导入依赖的package包/类
@Override
public void visit(OpService opService) {
	Table input = pop();
	if (!input.isEmpty()) {
		
    	TableFactory tableFactory = new TableFactory();
    	ArrayList<Var>  vars= new ArrayList<Var>( OpVars.mentionedVars(opService));
    	//Table inputVars = TableFactory.create(input,vars);
    	Table inputVars = new TableFiltered(input,vars);
		
		Op op1 = OpSequence.create(opService.getSubOp(),
				OpTable.create(inputVars));
		opService = new OpService(opService.getService(), op1,
				opService.getSilent());
	}
	QueryIterator qIter = Service.exec(opService, ARQ.getContext());
	Table table = TableFactory.create(qIter);
	push(table);
}
 
开发者ID:peterjohnlawrence,项目名称:com.inova8.remediator,代码行数:20,代码来源:EvaluatorDispatch.java


示例4: processFilterWorker

import com.hp.hpl.jena.sparql.algebra.OpVars; //导入依赖的package包/类
private Op processFilterWorker(Expr e, Op subOp, Set<Var> patternVars) {
    if ( patternVars == null )
        patternVars = OpVars.visibleVars(subOp);
    // Rewrites:
    // FILTER ( ?x = ?y )

    if ( !(e instanceof E_Equals) )
        return null;

    // Corner case: sameTerm is false for string/plain literal,
    // but true in the graph for graphs with

    ExprFunction2 eq = (ExprFunction2)e;
    Expr left = eq.getArg1();
    Expr right = eq.getArg2();

    if ( left.isVariable() && right.isVariable() ) {
        // Both must be used or else.
        if ( patternVars.contains(left.asVar()) &&
             patternVars.contains(right.asVar()) ) {
            if (visitor.projectVars != null && !visitor.projectVars.contains(right.asVar()))
                return subst(subOp, left.getExprVar(), right.getExprVar());
            if (visitor.projectVars != null && !visitor.projectVars.contains(left.asVar()))
                return subst(subOp, right.getExprVar(), left.getExprVar());
        }
    }

    return null;
}
 
开发者ID:aschaetzle,项目名称:S2RDF,代码行数:30,代码来源:TransformFilterVarEquality.java


示例5: processFilterWorker

import com.hp.hpl.jena.sparql.algebra.OpVars; //导入依赖的package包/类
private Op processFilterWorker(Expr e, Op subOp, Set<Var> patternVars) {
	if ( patternVars == null )
		patternVars = OpVars.visibleVars(subOp);
	// Rewrites:
	// FILTER ( ?x = ?y )

	if ( !(e instanceof E_Equals) )
		return null;

	// Corner case: sameTerm is false for string/plain literal,
	// but true in the graph for graphs with

	ExprFunction2 eq = (ExprFunction2)e;
	Expr left = eq.getArg1();
	Expr right = eq.getArg2();

	if ( left.isVariable() && right.isVariable() ) {
		// Both must be used or else.
		if ( patternVars.contains(left.asVar()) &&
			 patternVars.contains(right.asVar()) ) {
			if (visitor.projectVars != null && !visitor.projectVars.contains(right.asVar()))
				return subst(subOp, left.getExprVar(), right.getExprVar());
			if (visitor.projectVars != null && !visitor.projectVars.contains(left.asVar()))
				return subst(subOp, right.getExprVar(), left.getExprVar());
		}
	}

	return null;
}
 
开发者ID:aschaetzle,项目名称:Sempala,代码行数:30,代码来源:TransformFilterVarEquality.java


示例6: BGPToTerm

import com.hp.hpl.jena.sparql.algebra.OpVars; //导入依赖的package包/类
private Term BGPToTerm(OpBGP opBGP) {
	new OpVars();
	Set<Var> variables = OpVars.visibleVars(opBGP);
	Term[] vAtom = new Term[variables.size()];
	int index = 0;
	for (Var variable : variables) {
		vAtom[index] = termFactory.getVariable(globalQueryVars.indexOf(variable));
		index++;
	}
	return termFactory.getFunctionalTerm(FUNCTIONALTERM_PREFIX, vAtom);
}
 
开发者ID:peterjohnlawrence,项目名称:com.inova8.remediator,代码行数:12,代码来源:RemediatorFederatedQuery.java


示例7: RemediatorQuery

import com.hp.hpl.jena.sparql.algebra.OpVars; //导入依赖的package包/类
public RemediatorQuery(String queryString) {
	super();
	this.queryString = queryString;
	this.originalQuery = QueryFactory.create(this.queryString);
	this.originalOperations = Algebra.compile(this.originalQuery);
	queryVars = new QueryVars(
			OpVars.mentionedVars(this.originalOperations));
	Simplifier  simplifier = new Simplifier();
	this.simplifiedOperations = Transformer.transform(simplifier, this.originalOperations);
	//Create lookup for simplified operations
	for(Triple triple:((OpBGP)this.simplifiedOperations).getPattern().getList()){
		//TODO Should only put in relevant operations for this dataset.
		simplifiedTriples.put(triple.hashCode(), triple);
	}
}
 
开发者ID:peterjohnlawrence,项目名称:com.inova8.remediator,代码行数:16,代码来源:RemediatorQuery.java


示例8: runPlan

import com.hp.hpl.jena.sparql.algebra.OpVars; //导入依赖的package包/类
private static void runPlan(Plan plan) {
    //QueryExecUtils.execute(op, dsg)
    List<String> vars = null ;
    ResultsFormat outputFormat = ResultsFormat.FMT_TEXT ;
    
    Op op = plan.getOp();
    if ( op instanceof OpProject )
        vars = Var.varNames(((OpProject)op).getVars()) ;
    else
        vars = Var.varNames(OpVars.visibleVars(op)) ;

    ResultSet results = ResultSetFactory.create(plan.iterator(), vars) ;
    QueryExecUtils.outputResultSet(results, null, outputFormat) ;
}
 
开发者ID:afs,项目名称:quack,代码行数:15,代码来源:RefactorQueryExecution.java


示例9: exec

import com.hp.hpl.jena.sparql.algebra.OpVars; //导入依赖的package包/类
private ResultSetRewindable exec(DatasetGraph ds, Op op) {
    QueryIterator qIter = Algebra.exec(op, ds) ;
    List<String> vars = Var.varNames(OpVars.visibleVars(op)) ;
    ResultSetRewindable rs = ResultSetFactory.makeRewindable(new ResultSetStream(vars, null, qIter)) ;
    return rs ; 
}
 
开发者ID:afs,项目名称:quack,代码行数:7,代码来源:TestEngine.java



注:本文中的com.hp.hpl.jena.sparql.algebra.OpVars类示例整理自Github/MSDocs等源码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。


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