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From: sjcorbett <git@git.apache.org>
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Subject: [GitHub] brooklyn-server pull request #553: MultimapSerializer works with non-String ...
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Message-Id: <20170208153233.E301FDFBDB@git1-us-west.apache.org>
Date: Wed,  8 Feb 2017 15:32:33 +0000 (UTC)
archived-at: Wed, 08 Feb 2017 15:32:36 -0000

Github user sjcorbett commented on a diff in the pull request:

    https://github.com/apache/brooklyn-server/pull/553#discussion_r100091981
  
    --- Diff: core/src/test/java/org/apache/brooklyn/util/core/json/MultimapSerializerTest.java ---
    @@ -0,0 +1,72 @@
    +/*
    + * 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.brooklyn.util.core.json;
    +
    +import static org.testng.Assert.assertEquals;
    +
    +import org.apache.brooklyn.api.entity.Entity;
    +import org.apache.brooklyn.api.entity.EntitySpec;
    +import org.apache.brooklyn.core.test.BrooklynAppUnitTestSupport;
    +import org.apache.brooklyn.entity.stock.BasicEntity;
    +import org.testng.annotations.BeforeMethod;
    +import org.testng.annotations.Test;
    +
    +import com.fasterxml.jackson.core.Version;
    +import com.fasterxml.jackson.databind.ObjectMapper;
    +import com.fasterxml.jackson.databind.module.SimpleModule;
    +import com.google.common.collect.Multimap;
    +import com.google.common.collect.MultimapBuilder;
    +
    +public class MultimapSerializerTest extends BrooklynAppUnitTestSupport {
    +
    +    ObjectMapper mapper;
    +
    +    @Override
    +    @BeforeMethod(alwaysRun = true)
    +    public void setUp() throws Exception {
    +        super.setUp();
    +        mapper = new ObjectMapper();
    +        SimpleModule mapperModule = new SimpleModule("MultimapSerializerTest", new Version(0, 0, 0, "ignored", null, null));
    +        mapperModule.addSerializer(new MultimapSerializer());
    +        mapper.registerModule(mapperModule);
    +    }
    +
    +    @Test
    +    public void testSerializeStringKey() throws Exception {
    +        Multimap<String, Integer> map = MultimapBuilder.hashKeys().arrayListValues().build();
    +        map.put("a", 1);
    +        map.put("a", 2);
    +        map.put("a", 3);
    +        String json = mapper.writer().writeValueAsString(map);
    +        assertEquals(json, "{\"a\":[1,2,3]}");
    +    }
    +
    +    @Test
    +    public void testSerializeEntityKey() throws Exception {
    +        Entity entity = app.createAndManageChild(EntitySpec.create(BasicEntity.class));
    +        Multimap<Entity, Integer> map = MultimapBuilder.hashKeys().arrayListValues().build();
    +        map.put(entity, 1);
    +        map.put(entity, 2);
    +        map.put(entity, 3);
    +        String json = mapper.writer().writeValueAsString(map);
    +        assertEquals(json, "{\"BasicEntityImpl{id=" + entity.getId() + "}" + "\":[1,2,3]}");
    --- End diff --
    
    It should be the `toString` of that object. A SimpleBean would be something like `"SimpleBean@4e5cdbfd"`. A Multimap with an `ImmutableMap` key would look like: `{"{a=b}":[3]}`


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