#87 - Add benchmark for DefaultTypeMapper.

benchmark/commons/src/main/java/org/springframework/data/microbenchmark/commons/convert/DefaultTypeMapperBenchmark.java

@@ -0,0 +1,81 @@
+/*
+ * Copyright 2018 the original author or authors.
+ *
+ * Licensed 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.springframework.data.microbenchmark.commons.convert;
+
+import java.util.Collections;
+import java.util.Map;
+
+import org.openjdk.jmh.annotations.Benchmark;
+import org.springframework.data.convert.DefaultTypeMapper;
+import org.springframework.data.convert.TypeAliasAccessor;
+import org.springframework.data.mapping.Alias;
+import org.springframework.data.microbenchmark.common.AbstractMicrobenchmark;
+import org.springframework.data.util.ClassTypeInformation;
+import org.springframework.data.util.TypeInformation;
+
+/**
+ * Benchmark for {@link DefaultTypeMapper}.
+ * 
+ * @author Mark Paluch
+ */
+public class DefaultTypeMapperBenchmark extends AbstractMicrobenchmark {
+
+	private static final DefaultTypeMapper<Map<String, Object>> TYPE_MAPPER = new DefaultTypeMapper<>(
+			StringTypeAliasAccessor.INSTANCE);
+
+	private static final Map<String, Object> TYPED = Collections.singletonMap("_class", MySubType.class.getName());
+	private static final Map<String, Object> UNTYPED = Collections.emptyMap();
+	private static final TypeInformation<MyType> TYPE_INFORMATION = ClassTypeInformation.from(MyType.class);
+
+	@Benchmark
+	public Object readTyped() {
+		return TYPE_MAPPER.readType(TYPED);
+	}
+
+	@Benchmark
+	public Object readTypedWithBaseType() {
+		return TYPE_MAPPER.readType(TYPED, TYPE_INFORMATION);
+	}
+
+	@Benchmark
+	public Object readUntyped() {
+		return TYPE_MAPPER.readType(UNTYPED);
+	}
+
+	@Benchmark
+	public Object readUntypedWithBaseType() {
+		return TYPE_MAPPER.readType(UNTYPED, TYPE_INFORMATION);
+	}
+
+	static class MyType {}
+
+	static class MySubType extends MyType {}
+
+	enum StringTypeAliasAccessor implements TypeAliasAccessor<Map<String, Object>> {
+
+		INSTANCE;
+
+		@Override
+		public Alias readAliasFrom(Map<String, Object> source) {
+			return Alias.ofNullable(source.get("_class"));
+		}
+
+		@Override
+		public void writeTypeTo(Map<String, Object> sink, Object alias) {
+			sink.put("_class", alias);
+		}
+	}
+}