本文整理汇总了Java中org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper.insertTraversal方法的典型用法代码示例。如果您正苦于以下问题：Java TraversalHelper.insertTraversal方法的具体用法？Java TraversalHelper.insertTraversal怎么用？Java TraversalHelper.insertTraversal使用的例子？那么, 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.tinkerpop.gremlin.process.traversal.util.TraversalHelper的用法示例。
在下文中一共展示了TraversalHelper.insertTraversal方法的4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: processTraversalFilterStep
import org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper; //导入方法依赖的package包/类
private static final boolean processTraversalFilterStep(final TraversalFilterStep<?> step, final Traversal.Admin<?, ?> traversal) {
final Traversal.Admin<?, ?> childTraversal = step.getLocalChildren().get(0);
if (TraversalHelper.hasAllStepsOfClass(childTraversal, FilterStep.class) &&
!TraversalHelper.hasStepOfClass(childTraversal,
DropStep.class,
RangeGlobalStep.class,
DedupGlobalStep.class,
LambdaHolder.class)) {
TraversalHelper.applySingleLevelStrategies(traversal, childTraversal, InlineFilterStrategy.class);
final Step<?, ?> finalStep = childTraversal.getEndStep();
TraversalHelper.insertTraversal((Step) step, childTraversal, traversal);
TraversalHelper.copyLabels(step, finalStep, false);
traversal.removeStep(step);
return true;
}
return false;
}
示例2: apply
import org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper; //导入方法依赖的package包/类
@Override
public void apply(final Traversal.Admin<?, ?> traversal) {
if (TraversalHelper.onGraphComputer(traversal))
return;
for (int i = 0; i < traversal.getSteps().size(); i++) {
if (traversal.getSteps().get(i) instanceof RepeatStep) {
final RepeatStep<?> repeatStep = (RepeatStep) traversal.getSteps().get(i);
if (null == repeatStep.getEmitTraversal() && repeatStep.getUntilTraversal() instanceof LoopTraversal && ((LoopTraversal) repeatStep.getUntilTraversal()).getMaxLoops() > 0) {
final Traversal.Admin<?, ?> repeatTraversal = repeatStep.getGlobalChildren().get(0);
final int repeatLength = repeatTraversal.getSteps().size() - 1;
repeatTraversal.removeStep(repeatLength); // removes the RepeatEndStep
int insertIndex = i;
final int loops = (int) ((LoopTraversal) repeatStep.getUntilTraversal()).getMaxLoops();
for (int j = 0; j < loops; j++) {
TraversalHelper.insertTraversal(insertIndex, repeatTraversal.clone(), traversal);
insertIndex = insertIndex + repeatLength;
if (j != (loops - 1) || !(traversal.getSteps().get(insertIndex).getNextStep() instanceof Barrier)) // only add a final NoOpBarrier is subsequent step is not a barrier
traversal.addStep(++insertIndex, new NoOpBarrierStep<>(traversal, 5000));
}
// label last step if repeat() was labeled
if (!repeatStep.getLabels().isEmpty()) {
final Step<?, ?> lastStep = traversal.getSteps().get(insertIndex);
repeatStep.getLabels().forEach(lastStep::addLabel);
}
traversal.removeStep(i); // remove the RepeatStep
}
}
}
}
示例3: processMatchStep
import org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper; //导入方法依赖的package包/类
private static final boolean processMatchStep(final MatchStep<?, ?> step, final Traversal.Admin<?, ?> traversal) {
if (step.getPreviousStep() instanceof EmptyStep)
return false;
boolean changed = false;
final String startLabel = MatchStep.Helper.computeStartLabel(step.getGlobalChildren());
for (final Traversal.Admin<?, ?> matchTraversal : new ArrayList<>(step.getGlobalChildren())) {
if (TraversalHelper.hasAllStepsOfClass(matchTraversal,
HasStep.class,
MatchStep.MatchStartStep.class,
MatchStep.MatchEndStep.class) &&
matchTraversal.getStartStep() instanceof MatchStep.MatchStartStep &&
startLabel.equals(((MatchStep.MatchStartStep) matchTraversal.getStartStep()).getSelectKey().orElse(null))) {
changed = true;
step.removeGlobalChild(matchTraversal);
final String endLabel = ((MatchStep.MatchEndStep) matchTraversal.getEndStep()).getMatchKey().orElse(null); // why would this exist? but just in case
matchTraversal.removeStep(0); // remove MatchStartStep
matchTraversal.removeStep(matchTraversal.getSteps().size() - 1); // remove MatchEndStep
TraversalHelper.applySingleLevelStrategies(traversal, matchTraversal, InlineFilterStrategy.class);
matchTraversal.getEndStep().addLabel(startLabel);
if (null != endLabel) matchTraversal.getEndStep().addLabel(endLabel);
TraversalHelper.insertTraversal((Step) step.getPreviousStep(), matchTraversal, traversal);
}
}
if (step.getGlobalChildren().isEmpty())
traversal.removeStep(step);
return changed;
}
示例4: apply
import org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper; //导入方法依赖的package包/类
@Override
public void apply(final Traversal.Admin<?, ?> traversal) {
if (TraversalHelper.onGraphComputer(traversal))
return;
for (int i = 0; i < traversal.getSteps().size(); i++) {
if (traversal.getSteps().get(i) instanceof RepeatStep) {
final RepeatStep<?> repeatStep = (RepeatStep) traversal.getSteps().get(i);
if (null == repeatStep.getEmitTraversal() && null != repeatStep.getRepeatTraversal() &&
repeatStep.getUntilTraversal() instanceof LoopTraversal && ((LoopTraversal) repeatStep.getUntilTraversal()).getMaxLoops() > 0 &&
!TraversalHelper.hasStepOfAssignableClassRecursively(Scope.global, DedupGlobalStep.class, repeatStep.getRepeatTraversal()) &&
!TraversalHelper.hasStepOfAssignableClassRecursively(INVALIDATING_STEPS, repeatStep.getRepeatTraversal())) {
final Traversal.Admin<?, ?> repeatTraversal = repeatStep.getGlobalChildren().get(0);
repeatTraversal.removeStep(repeatTraversal.getSteps().size() - 1); // removes the RepeatEndStep
TraversalHelper.applySingleLevelStrategies(traversal, repeatTraversal, RepeatUnrollStrategy.class);
final int repeatLength = repeatTraversal.getSteps().size();
int insertIndex = i;
final int loops = (int) ((LoopTraversal) repeatStep.getUntilTraversal()).getMaxLoops();
for (int j = 0; j < loops; j++) {
TraversalHelper.insertTraversal(insertIndex, repeatTraversal.clone(), traversal);
insertIndex = insertIndex + repeatLength;
if (j != (loops - 1) || !(traversal.getSteps().get(insertIndex).getNextStep() instanceof Barrier)) // only add a final NoOpBarrier is subsequent step is not a barrier
traversal.addStep(++insertIndex, new NoOpBarrierStep<>(traversal, MAX_BARRIER_SIZE));
}
// label last step if repeat() was labeled
if (!repeatStep.getLabels().isEmpty())
TraversalHelper.copyLabels(repeatStep, traversal.getSteps().get(insertIndex), false);
traversal.removeStep(i); // remove the RepeatStep
}
}
}
}