Merge pull request #12 from fabiojose/patch-2

Make the source compatible to java 1.8

api/pom.xml

@@ -61,8 +61,8 @@
 
     <properties>
         <jackson.version>2.9.6</jackson.version>
-        <maven.compiler.source>1.9</maven.compiler.source>
-        <maven.compiler.target>1.9</maven.compiler.target>
+        <maven.compiler.source>1.8</maven.compiler.source>
+        <maven.compiler.target>1.8</maven.compiler.target>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
 

api/src/main/java/io/cloudevents/impl/ZonedDateTimeSerializer.java

@@ -0,0 +1,46 @@
+/**
+ * Copyright 2018 The CloudEvents 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 io.cloudevents.impl;
+
+import java.io.IOException;
+import java.time.ZonedDateTime;
+import java.time.format.DateTimeFormatter;
+
+import com.fasterxml.jackson.core.JsonGenerator;
+import com.fasterxml.jackson.databind.SerializerProvider;
+import com.fasterxml.jackson.databind.ser.std.StdSerializer;
+
+public class ZonedDateTimeSerializer extends StdSerializer<ZonedDateTime> {
+
+	private static final long serialVersionUID = 6245182835980474796L;
+
+	public ZonedDateTimeSerializer() {
+		this(null, false);
+	}
+
+	protected ZonedDateTimeSerializer(Class<?> t, boolean dummy) {
+		super(t, dummy);
+	}
+
+	@Override
+	public void serialize(ZonedDateTime time, JsonGenerator generator,
+			SerializerProvider provider) throws IOException {
+
+		generator.writeString(time.format(DateTimeFormatter.ISO_OFFSET_DATE_TIME));
+
+	}
+
+}

api/src/test/java/io/cloudevents/CloudEventBuilderTest.java

@@ -20,6 +20,7 @@ import org.junit.Test;
 import java.net.URI;
 import java.time.ZonedDateTime;
 import java.util.Map;
+import java.util.HashMap;
 import java.util.UUID;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -30,7 +31,9 @@ public class CloudEventBuilderTest {
     public void testBuilderWithData() {
 
         // given
-        final Map<String, String> keyValueStore = Map.of("key1", "value1", "key2", "val2");
+        final Map<String, String> keyValueStore = new HashMap<>();
+        keyValueStore.put("key1", "value1");
+        keyValueStore.put("key2", "value2");
         final String eventId = UUID.randomUUID().toString();
         final URI src = URI.create("/trigger");
         final String eventType = "My.Cloud.Event.Type";
@@ -38,7 +41,8 @@ public class CloudEventBuilderTest {
         final ZonedDateTime eventTime = ZonedDateTime.now();
         final String contentType = "application/json";
         final URI schemaUri = URI.create("http://cloudevents.io/schema");
-        final Map<String, String> extensionData = Map.of("foo", "bar");
+        final Map<String, String> extensionData = new HashMap<>();
+        extensionData.put("foo", "bar");
 
         // when
         final CloudEvent<Map<String, String>> simpleKeyValueEvent = new CloudEventBuilder()