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https://issues.apache.org/jira/browse/BEAM-4613?focusedWorklogId=116186&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-116186
]
ASF GitHub Bot logged work on BEAM-4613:
----------------------------------------
Author: ASF GitHub Bot
Created on: 26/Jun/18 23:06
Start Date: 26/Jun/18 23:06
Worklog Time Spent: 10m
Work Description: reuvenlax commented on a change in pull request #5723:
[BEAM-4613] Use ByteBuddy to generate a coder class for a specific Schema.
URL: https://github.com/apache/beam/pull/5723#discussion_r198252739
##########
File path:
sdks/java/core/src/main/java/org/apache/beam/sdk/coders/GeneratedRowCoder.java
##########
@@ -0,0 +1,316 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package org.apache.beam.sdk.coders;
+
+import com.google.common.collect.Lists;
+import com.google.common.collect.Maps;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.lang.reflect.InvocationTargetException;
+import java.util.BitSet;
+import java.util.List;
+import java.util.Map;
+import java.util.UUID;
+import net.bytebuddy.ByteBuddy;
+import net.bytebuddy.description.modifier.FieldManifestation;
+import net.bytebuddy.description.modifier.Ownership;
+import net.bytebuddy.description.modifier.Visibility;
+import net.bytebuddy.description.type.TypeDescription;
+import net.bytebuddy.description.type.TypeDescription.ForLoadedType;
+import net.bytebuddy.dynamic.DynamicType;
+import net.bytebuddy.dynamic.loading.ClassLoadingStrategy;
+import net.bytebuddy.dynamic.scaffold.InstrumentedType;
+import net.bytebuddy.implementation.FixedValue;
+import net.bytebuddy.implementation.Implementation;
+import net.bytebuddy.implementation.bytecode.ByteCodeAppender;
+import net.bytebuddy.implementation.bytecode.Duplication;
+import net.bytebuddy.implementation.bytecode.StackManipulation;
+import net.bytebuddy.implementation.bytecode.StackManipulation.Compound;
+import net.bytebuddy.implementation.bytecode.TypeCreation;
+import net.bytebuddy.implementation.bytecode.assign.TypeCasting;
+import net.bytebuddy.implementation.bytecode.collection.ArrayFactory;
+import net.bytebuddy.implementation.bytecode.member.FieldAccess;
+import net.bytebuddy.implementation.bytecode.member.MethodInvocation;
+import net.bytebuddy.implementation.bytecode.member.MethodReturn;
+import net.bytebuddy.implementation.bytecode.member.MethodVariableAccess;
+import net.bytebuddy.matcher.ElementMatchers;
+import org.apache.beam.sdk.schemas.Schema;
+import org.apache.beam.sdk.schemas.Schema.TypeName;
+import org.apache.beam.sdk.values.Row;
+import org.apache.beam.sdk.values.reflect.FieldValueGetter;
+
+/**
+ * A utility for automatically generating a {@link Coder} for {@link Row}
objects corresponding to
+ * a specific schema. The resulting coder is loaded into the default
ClassLoader and returned.
+ *
+ */
+public abstract class GeneratedRowCoder {
+ private static final ByteBuddy BYTE_BUDDY = new ByteBuddy();
+ private static final ForLoadedType CODER_TYPE = new
ForLoadedType(Coder.class);
+ private static final ForLoadedType LIST_CODER_TYPE = new
ForLoadedType(ListCoder.class);
+ private static final ForLoadedType MAP_CODER_TYPE = new
ForLoadedType(MapCoder.class);
+ private static final BitSetCoder NULL_LIST_CODER = BitSetCoder.of();
+
+ public static final String CODERS_FIELD_NAME = "FIELD_CODERS";
+
+ // A map of primitive types -> StackManipulations to create their coders.
+ private static final Map<TypeName, StackManipulation> CODER_MAP;
+
+ // Cache for Coder class that are already generated.
+ private static Map<UUID, Coder<Row>> generatedCoders = Maps.newHashMap();
+
+ static {
+ // Initialize the CODER_MAP with the StackManipulations to create the
primitive coders.
+ // Assumes that each class contains a static of() constructor method.
+ CODER_MAP = Maps.newHashMap();
+ for (Map.Entry<TypeName, Coder> entry : RowCoder.CODER_MAP.entrySet()) {
+ StackManipulation stackManipulation = MethodInvocation.invoke(
+ new ForLoadedType(entry.getValue().getClass()).getDeclaredMethods()
+ .filter(ElementMatchers.named(("of")))
+ .getOnly());
+ CODER_MAP.putIfAbsent(entry.getKey(), stackManipulation);
+ }
+ }
+
+ public static Coder<Row> of(Schema schema, UUID coderId) {
Review comment:
done
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Issue Time Tracking
-------------------
Worklog Id: (was: 116186)
Time Spent: 2h (was: 1h 50m)
> Improve performance of SchemaCoder
> ----------------------------------
>
> Key: BEAM-4613
> URL: https://issues.apache.org/jira/browse/BEAM-4613
> Project: Beam
> Issue Type: Sub-task
> Components: sdk-java-core
> Reporter: Reuven Lax
> Assignee: Reuven Lax
> Priority: Major
> Time Spent: 2h
> Remaining Estimate: 0h
>
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