Package org.apache.tinkerpop.gremlin.process.traversal.util

Class ReadOnlyChildValidator

java.lang.Object

org.apache.tinkerpop.gremlin.process.traversal.util.ReadOnlyChildValidator

public final class ReadOnlyChildValidator
extends Object

Validates that child traversals do not contain mutating steps. Child traversals used as arguments to filter predicates (has(), is(), etc.), lookup steps (V(traversal), E(traversal)), and mutation steps (property(traversal)) must be read-only - their purpose is to compute values, not produce side effects.

Method Summary

Modifier and Type	Method	Description
static void	validate(Traversal.Admin<?,?> child)	Validates that a child traversal contains no Mutating steps at any nesting depth.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Details

validate

public static void validate(Traversal.Admin<?,?> child)

Validates that a child traversal contains no Mutating steps at any nesting depth. Throws IllegalArgumentException if one is found.