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Posted to commits@tinkerpop.apache.org by sp...@apache.org on 2018/04/20 20:56:42 UTC
tinkerpop git commit: TINKERPOP-1950 Cached global strategy lookups
during traversal construction
Repository: tinkerpop
Updated Branches:
refs/heads/TINKERPOP-1950 [created] b8c44bf12
TINKERPOP-1950 Cached global strategy lookups during traversal construction
This change leads to a 1.5x to 2x speed improvement in traversal construction. It is especially effective when processing traversals that have many child traversals within them as this method is called for not only the parent traversal but all the children as well.
Project: http://git-wip-us.apache.org/repos/asf/tinkerpop/repo
Commit: http://git-wip-us.apache.org/repos/asf/tinkerpop/commit/b8c44bf1
Tree: http://git-wip-us.apache.org/repos/asf/tinkerpop/tree/b8c44bf1
Diff: http://git-wip-us.apache.org/repos/asf/tinkerpop/diff/b8c44bf1
Branch: refs/heads/TINKERPOP-1950
Commit: b8c44bf126986031cf168f5c78b9ff04b779c652
Parents: b99c56a
Author: Stephen Mallette <sp...@genoprime.com>
Authored: Fri Apr 20 16:18:13 2018 -0400
Committer: Stephen Mallette <sp...@genoprime.com>
Committed: Fri Apr 20 16:18:13 2018 -0400
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.../process/traversal/TraversalStrategies.java | 29 ++++++++++++++------
1 file changed, 21 insertions(+), 8 deletions(-)
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http://git-wip-us.apache.org/repos/asf/tinkerpop/blob/b8c44bf1/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/TraversalStrategies.java
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diff --git a/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/TraversalStrategies.java b/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/TraversalStrategies.java
index c7ee5bf..7ca5b61 100644
--- a/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/TraversalStrategies.java
+++ b/gremlin-core/src/main/java/org/apache/tinkerpop/gremlin/process/traversal/TraversalStrategies.java
@@ -63,6 +63,8 @@ import java.util.stream.Collectors;
*/
public interface TraversalStrategies extends Serializable, Cloneable {
+ static Set<Class> LOADED = new HashSet<>();
+
static List<Class<? extends TraversalStrategy>> STRATEGY_CATEGORIES = Collections.unmodifiableList(Arrays.asList(TraversalStrategy.DecorationStrategy.class, TraversalStrategy.OptimizationStrategy.class, TraversalStrategy.ProviderOptimizationStrategy.class, TraversalStrategy.FinalizationStrategy.class, TraversalStrategy.VerificationStrategy.class));
/**
@@ -244,20 +246,31 @@ public interface TraversalStrategies extends Serializable, Cloneable {
public static TraversalStrategies getStrategies(final Class graphOrGraphComputerClass) {
try {
// be sure to load the class so that its static{} traversal strategy registration component is loaded.
- // this is more important for GraphComputer classes as they are typically not instantiated prior to strategy usage like Graph classes.
- final String graphComputerClassName = null != graphOrGraphComputerClass.getDeclaringClass() ?
+ // this is more important for GraphComputer classes as they are typically not instantiated prior to
+ // strategy usage like Graph classes.
+ if (!LOADED.contains(graphOrGraphComputerClass)) {
+ final String graphComputerClassName = null != graphOrGraphComputerClass.getDeclaringClass() ?
graphOrGraphComputerClass.getCanonicalName().replace("." + graphOrGraphComputerClass.getSimpleName(), "$" + graphOrGraphComputerClass.getSimpleName()) :
graphOrGraphComputerClass.getCanonicalName();
- Class.forName(graphComputerClassName);
+ Class.forName(graphComputerClassName);
+
+ // keep track of stuff we already loaded once - stuff in this if/statement isn't cheap and this
+ // method gets called a lot, basically every time a new traversal gets spun up (that includes
+ // child traversals.
+ LOADED.add(graphOrGraphComputerClass);
+ }
} catch (final ClassNotFoundException e) {
throw new IllegalStateException(e.getMessage(), e);
}
- if (Graph.class.isAssignableFrom(graphOrGraphComputerClass)) {
- final TraversalStrategies traversalStrategies = GRAPH_CACHE.get(graphOrGraphComputerClass);
- return null == traversalStrategies ? GRAPH_CACHE.get(Graph.class) : traversalStrategies;
+
+ if (GRAPH_CACHE.containsKey(graphOrGraphComputerClass)) {
+ return GRAPH_CACHE.get(graphOrGraphComputerClass);
+ } else if (Graph.class.isAssignableFrom(graphOrGraphComputerClass)) {
+ return GRAPH_CACHE.get(Graph.class);
+ } else if (GRAPH_COMPUTER_CACHE.containsKey(graphOrGraphComputerClass)) {
+ return GRAPH_COMPUTER_CACHE.get(graphOrGraphComputerClass);
} else if (GraphComputer.class.isAssignableFrom(graphOrGraphComputerClass)) {
- final TraversalStrategies traversalStrategies = GRAPH_COMPUTER_CACHE.get(graphOrGraphComputerClass);
- return null == traversalStrategies ? GRAPH_COMPUTER_CACHE.get(GraphComputer.class) : traversalStrategies;
+ return GRAPH_COMPUTER_CACHE.get(GraphComputer.class);
} else {
throw new IllegalArgumentException("The TraversalStrategies.GlobalCache only supports Graph and GraphComputer strategy caching: " + graphOrGraphComputerClass.getCanonicalName());
}