Java MapStep类的典型用法和代码示例

本文整理汇总了Java中org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep类的典型用法代码示例。如果您正苦于以下问题：Java MapStep类的具体用法？Java MapStep怎么用？Java MapStep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。

MapStep类属于org.apache.tinkerpop.gremlin.process.traversal.step.map包，在下文中一共展示了MapStep类的1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: apply

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import org.apache.tinkerpop.gremlin.process.traversal.step.map.MapStep; //导入依赖的package包/类
@Override
public void apply(final Traversal.Admin<?, ?> traversal) {
    if (!(traversal.getParent() instanceof EmptyStep) || TraversalHelper.onGraphComputer(traversal))
        return;
    final List<Step> steps = traversal.getSteps();
    if (steps.size() < 2 ||
            !(steps.get(0) instanceof GraphStep) ||
            0 != ((GraphStep) steps.get(0)).getIds().length ||
            !(steps.get(steps.size() - 1) instanceof CountGlobalStep))
        return;
    for (int i = 1; i < steps.size() - 1; i++) {
        final Step current = steps.get(i);
        if (!(current instanceof MapStep ||
                current instanceof IdentityStep ||
                current instanceof NoOpBarrierStep ||
                current instanceof CollectingBarrierStep) ||
                (current instanceof TraversalParent &&
                        TraversalHelper.anyStepRecursively(s -> (s instanceof SideEffectStep || s instanceof AggregateStep), (TraversalParent) current)))
            return;
    }
    final Class<? extends Element> elementClass = ((GraphStep<?, ?>) steps.get(0)).getReturnClass();
    TraversalHelper.removeAllSteps(traversal);
    traversal.addStep(new TinkerCountGlobalStep<>(traversal, elementClass));
}
 

开发者ID:ShiftLeftSecurity，
项目名称:tinkergraph-gremlin，
代码行数:25，
代码来源:TinkerGraphCountStrategy.java