本文整理汇总了Java中org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper.getStepsOfClass方法的典型用法代码示例。如果您正苦于以下问题：Java TraversalHelper.getStepsOfClass方法的具体用法？Java TraversalHelper.getStepsOfClass怎么用？Java TraversalHelper.getStepsOfClass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.getStepsOfClass方法的11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: 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 (final GraphStep originalGraphStep : TraversalHelper.getStepsOfClass(GraphStep.class, traversal)) {
final TinkerGraphStep<?, ?> tinkerGraphStep = new TinkerGraphStep<>(originalGraphStep);
TraversalHelper.replaceStep(originalGraphStep, tinkerGraphStep, traversal);
Step<?, ?> currentStep = tinkerGraphStep.getNextStep();
while (currentStep instanceof HasStep || currentStep instanceof NoOpBarrierStep) {
if (currentStep instanceof HasStep) {
for (final HasContainer hasContainer : ((HasContainerHolder) currentStep).getHasContainers()) {
if (!GraphStep.processHasContainerIds(tinkerGraphStep, hasContainer))
tinkerGraphStep.addHasContainer(hasContainer);
}
TraversalHelper.copyLabels(currentStep, currentStep.getPreviousStep(), false);
traversal.removeStep(currentStep);
}
currentStep = currentStep.getNextStep();
}
}
}
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) {
for (final GraphStep originalGraphStep : TraversalHelper.getStepsOfClass(GraphStep.class, traversal)) {
final BitsyGraphStep<?, ?> bitsyGraphStep = new BitsyGraphStep<>(originalGraphStep);
TraversalHelper.replaceStep(originalGraphStep, bitsyGraphStep, traversal);
Step<?, ?> currentStep = bitsyGraphStep.getNextStep();
while (currentStep instanceof HasStep || currentStep instanceof NoOpBarrierStep) {
if (currentStep instanceof HasStep) {
for (final HasContainer hasContainer : ((HasContainerHolder) currentStep).getHasContainers()) {
if (!GraphStep.processHasContainerIds(bitsyGraphStep, hasContainer))
bitsyGraphStep.addHasContainer(hasContainer);
}
TraversalHelper.copyLabels(currentStep, currentStep.getPreviousStep(), false);
traversal.removeStep(currentStep);
}
currentStep = currentStep.getNextStep();
}
}
}
示例3: apply
import org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper; //导入方法依赖的package包/类
@SuppressWarnings("unchecked")
@Override
public void apply(final Traversal.Admin<?, ?> traversal) {
for (final VertexStep originalVertexStep : TraversalHelper.getStepsOfClass(VertexStep.class, traversal)) {
final HBaseVertexStep<?> hbaseVertexStep = new HBaseVertexStep<>(originalVertexStep);
TraversalHelper.replaceStep(originalVertexStep, hbaseVertexStep, traversal);
Step<?, ?> currentStep = hbaseVertexStep.getNextStep();
while (currentStep instanceof HasStep || currentStep instanceof NoOpBarrierStep) {
if (currentStep instanceof HasStep) {
for (final HasContainer hasContainer : ((HasContainerHolder) currentStep).getHasContainers()) {
hbaseVertexStep.addHasContainer(hasContainer);
}
TraversalHelper.copyLabels(currentStep, currentStep.getPreviousStep(), false);
traversal.removeStep(currentStep);
}
currentStep = currentStep.getNextStep();
}
}
}
示例4: apply
import org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper; //导入方法依赖的package包/类
@SuppressWarnings("unchecked")
@Override
public void apply(final Traversal.Admin<?, ?> traversal) {
for (final GraphStep originalGraphStep : TraversalHelper.getStepsOfClass(GraphStep.class, traversal)) {
final HBaseGraphStep<?, ?> hbaseGraphStep = new HBaseGraphStep<>(originalGraphStep);
TraversalHelper.replaceStep(originalGraphStep, hbaseGraphStep, traversal);
Step<?, ?> currentStep = hbaseGraphStep.getNextStep();
while (currentStep instanceof HasStep || currentStep instanceof NoOpBarrierStep) {
if (currentStep instanceof HasStep) {
for (final HasContainer hasContainer : ((HasContainerHolder) currentStep).getHasContainers()) {
if (!GraphStep.processHasContainerIds(hbaseGraphStep, hasContainer))
hbaseGraphStep.addHasContainer(hasContainer);
}
TraversalHelper.copyLabels(currentStep, currentStep.getPreviousStep(), false);
traversal.removeStep(currentStep);
}
currentStep = currentStep.getNextStep();
}
}
}
示例5: 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.getStepsOfAssignableClass(VertexProgramStep.class, traversal).size() > 1) // do not do if there is an OLAP chain
return;
final Graph graph = traversal.getGraph().orElse(EmptyGraph.instance()); // given that this strategy only works for single OLAP jobs, the graph is the traversal graph
for (final TraversalVertexProgramStep step : TraversalHelper.getStepsOfClass(TraversalVertexProgramStep.class, traversal)) { // will be zero or one step
final Traversal.Admin<?, ?> computerTraversal = step.generateProgram(graph, EmptyMemory.instance()).getTraversal().get().clone();
if (!computerTraversal.isLocked())
computerTraversal.applyStrategies();
final Computer computer = step.getComputer();
if (null == computer.getEdges() && !GraphComputer.Persist.EDGES.equals(computer.getPersist())) { // if edges() already set, use it
final Traversal.Admin<Vertex, Edge> edgeFilter = getEdgeFilter(computerTraversal);
if (null != edgeFilter) // if no edges can be filtered, then don't set edges()
step.setComputer(computer.edges(edgeFilter));
}
}
}
示例6: 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) {
final Graph graph = traversal.getGraph().orElse(EmptyGraph.instance()); // best guess at what the graph will be as its dynamically determined
for (final TraversalVertexProgramStep step : TraversalHelper.getStepsOfClass(TraversalVertexProgramStep.class, traversal)) {
final Traversal.Admin<?, ?> computerTraversal = step.generateProgram(graph, EmptyMemory.instance()).getTraversal().get().clone();
if (!computerTraversal.isLocked())
computerTraversal.applyStrategies();
boolean doesMessagePass = TraversalHelper.hasStepOfAssignableClassRecursively(Scope.global, MULTI_ITERATION_CLASSES, computerTraversal);
if (!doesMessagePass) {
for (final VertexStep vertexStep : TraversalHelper.getStepsOfAssignableClassRecursively(Scope.global, VertexStep.class, computerTraversal)) {
if (vertexStep.returnsVertex() || !vertexStep.getDirection().equals(Direction.OUT)) { // in-edges require message pass in OLAP
doesMessagePass = true;
break;
}
}
}
if (!doesMessagePass) {
step.setComputer(step.getComputer()
// if no message passing, don't partition the loaded graph
.configure(Constants.GREMLIN_SPARK_SKIP_PARTITIONER, true)
// if no message passing, don't cache the loaded graph
.configure(Constants.GREMLIN_SPARK_SKIP_GRAPH_CACHE, true));
}
}
}
示例7: 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) {
for (final GraphStep originalGraphStep : TraversalHelper.getStepsOfClass(GraphStep.class, traversal)) {
final Neo4jGraphStep<?, ?> neo4jGraphStep = new Neo4jGraphStep<>(originalGraphStep);
TraversalHelper.replaceStep(originalGraphStep, neo4jGraphStep, traversal);
Step<?, ?> currentStep = neo4jGraphStep.getNextStep();
while (currentStep instanceof HasStep || currentStep instanceof NoOpBarrierStep) {
if (currentStep instanceof HasStep) {
for (final HasContainer hasContainer : ((HasContainerHolder) currentStep).getHasContainers()) {
if (!GraphStep.processHasContainerIds(neo4jGraphStep, hasContainer))
neo4jGraphStep.addHasContainer(hasContainer);
}
TraversalHelper.copyLabels(currentStep, currentStep.getPreviousStep(), false);
traversal.removeStep(currentStep);
}
currentStep = currentStep.getNextStep();
}
}
}
示例8: shouldSubgraph
import org.apache.tinkerpop.gremlin.process.traversal.util.TraversalHelper; //导入方法依赖的package包/类
@Test
public void shouldSubgraph() {
final SubgraphStrategy strategy = SubgraphStrategy.build().edgeCriterion(__.identity()).vertexCriterion(__.identity()).create();
strategy.apply(traversal.asAdmin());
final List<TraversalFilterStep> steps = TraversalHelper.getStepsOfClass(TraversalFilterStep.class, traversal.asAdmin());
assertEquals(expectedInsertedSteps, steps.size());
}
示例9: 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) {
final Graph graph = traversal.getGraph().orElse(EmptyGraph.instance()); // best guess at what the graph will be as its dynamically determined
for (final TraversalVertexProgramStep step : TraversalHelper.getStepsOfClass(TraversalVertexProgramStep.class, traversal)) {
final Traversal.Admin<?, ?> computerTraversal = step.generateProgram(graph, EmptyMemory.instance()).getTraversal().get().clone();
if (!computerTraversal.isLocked())
computerTraversal.applyStrategies();
if (SparkStarBarrierInterceptor.isLegal(computerTraversal)) {
step.setComputer(step.getComputer()
.configure(Constants.GREMLIN_SPARK_SKIP_PARTITIONER, true)
.configure(Constants.GREMLIN_SPARK_SKIP_GRAPH_CACHE, true)
.configure(Constants.GREMLIN_HADOOP_VERTEX_PROGRAM_INTERCEPTOR, SparkStarBarrierInterceptor.class.getCanonicalName()));
}
}
}
示例10: 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 (traversal.getSteps().size() <= 1)
return;
for (final IdentityStep<?> identityStep : TraversalHelper.getStepsOfClass(IdentityStep.class, traversal)) {
if (identityStep.getLabels().isEmpty() || !(identityStep.getPreviousStep() instanceof EmptyStep)) {
TraversalHelper.copyLabels(identityStep, identityStep.getPreviousStep(), false);
traversal.removeStep(identityStep);
}
}
}
示例11: 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) {
final Graph graph = traversal.getGraph().orElse(EmptyGraph.instance()); // best guess at what the graph will be as its dynamically determined
for (final TraversalVertexProgramStep step : TraversalHelper.getStepsOfClass(TraversalVertexProgramStep.class, traversal)) {
final Traversal.Admin<?, ?> computerTraversal = step.generateProgram(graph, EmptyMemory.instance()).getTraversal().get().clone();
if (!computerTraversal.isLocked())
computerTraversal.applyStrategies();
///
boolean doesMessagePass = TraversalHelper.hasStepOfAssignableClassRecursively(Scope.global, MULTI_ITERATION_CLASSES, computerTraversal);
if (!doesMessagePass) {
for (final VertexStep vertexStep : TraversalHelper.getStepsOfAssignableClassRecursively(Scope.global, VertexStep.class, computerTraversal)) {
if (vertexStep.returnsVertex() || !vertexStep.getDirection().equals(Direction.OUT)) { // in-edges require message pass in OLAP
doesMessagePass = true;
break;
}
}
}
if (!doesMessagePass &&
!MessagePassingReductionStrategy.endsWithElement(computerTraversal.getEndStep()) &&
!(computerTraversal.getTraverserRequirements().contains(TraverserRequirement.LABELED_PATH) || // TODO: remove this when dynamic detachment is available in 3.3.0
computerTraversal.getTraverserRequirements().contains(TraverserRequirement.PATH))) { // TODO: remove this when dynamic detachment is available in 3.3.0
step.setComputer(step.getComputer()
// if no message passing, don't partition the loaded graph
.configure(Constants.GREMLIN_SPARK_SKIP_PARTITIONER, true)
// if no message passing, don't cache the loaded graph
.configure(Constants.GREMLIN_SPARK_SKIP_GRAPH_CACHE, true));
}
}
}