public final class LambdaRestrictionStrategy extends AbstractTraversalStrategy<TraversalStrategy.VerificationStrategy> implements TraversalStrategy.VerificationStrategy
LambdaRestrictionStrategy does not allow lambdas to be used in a Traversal. The contents of a lambda
cannot be analyzed/optimized and thus, reduces the ability of other TraversalStrategy instances to reason
about the traversal. This strategy is not activated by default. However, graph system vendors may choose to make
this a default strategy in order to ensure their respective strategies are better able to operate.
__.out().map(v -> v.get().value("name")) // throws an IllegalStateException
__.out().filter(v -> v.bulk() > 2) // throws an IllegalStateException
__.choose(v -> v.sack() == 1,out(),in()) // throws an IllegalStateException
__.select().by(v -> v.get().id()) // throws an IllegalStateException
__.order().by(a,b -> a > b) // throws an IllegalStateException
TraversalStrategy.DecorationStrategy, TraversalStrategy.FinalizationStrategy, TraversalStrategy.OptimizationStrategy, TraversalStrategy.ProviderOptimizationStrategy, TraversalStrategy.VerificationStrategy| Modifier and Type | Method and Description |
|---|---|
void |
apply(Traversal.Admin<?,?> traversal) |
static LambdaRestrictionStrategy |
instance() |
equals, hashCode, toStringclone, finalize, getClass, notify, notifyAll, wait, wait, waitcompareTo, getTraversalCategoryapplyPost, applyPriorpublic void apply(Traversal.Admin<?,?> traversal)
apply in interface TraversalStrategy<TraversalStrategy.VerificationStrategy>public static LambdaRestrictionStrategy instance()
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