Define Spring Converter interface extension to convert from JSON into an Object (POJO).

spring-geode/src/main/java/org/springframework/geode/data/json/converter/JsonToObjectConverter.java

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+/*
+ * Copyright 2020 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
+ *
+ *     https://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.geode.data.json.converter;
+
+import org.springframework.core.convert.converter.Converter;
+import org.springframework.lang.NonNull;
+
+/**
+ * Spring {@link Converter} interface extension defining a contract to convert
+ * from {@link String JSON} to an {@link Object} (POJO).
+ *
+ * @author John Blum
+ * @see java.lang.Object
+ * @see java.lang.String
+ * @see org.springframework.core.convert.converter.Converter
+ * @since 1.3.0
+ */
+public interface JsonToObjectConverter extends Converter<String, Object> {
+
+	/**
+	 * Converts the array of {@link Byte#TYPE bytes} containing JSON into an {@link Object} (POJO).
+	 *
+	 * @param json array of {@link Byte#TYPE bytes} containing JSON to convert into an {@link Object} (POJO);
+	 * must not be {@literal null}.
+	 * @return an {@link Object} (POJO) converted from the array of {@link Byte#TYPE bytes} containing JSON.
+	 * @see #convert(Object)
+	 */
+	default @NonNull Object convert(@NonNull byte[] json) {
+		return convert(new String(json));
+	}
+}

spring-geode/src/test/java/org/springframework/geode/data/json/converter/JsonToObjectConverterUnitTests.java

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+/*
+ * Copyright 2020 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
+ *
+ *     https://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.geode.data.json.converter;
+
+import static org.mockito.ArgumentMatchers.any;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.doCallRealMethod;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.times;
+import static org.mockito.Mockito.verify;
+
+import org.junit.Test;
+
+/**
+ * Unit Tests for {@link JsonToObjectConverter}.
+ *
+ * @author John Blum
+ * @see org.junit.Test
+ * @see org.mockito.Mockito
+ * @see org.springframework.geode.data.json.converter.JsonToObjectConverter
+ * @since 1.3.0
+ */
+public class JsonToObjectConverterUnitTests {
+
+	@Test
+	public void convertByteArrayCallsConvertJsonString() {
+
+		JsonToObjectConverter converter = mock(JsonToObjectConverter.class);
+
+		doCallRealMethod().when(converter).convert(any(byte[].class));
+
+		String json = "{ \"name\": \"Jon Doe\"}";
+
+		converter.convert(json.getBytes());
+
+		verify(converter, times(1)).convert(eq(json));
+	}
+}