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<span class="token keyword">import</span> <span class="token punctuation">{</span> InMemoryCache <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">&quot;apollo-cache-inmemory&quot;</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token punctuation">{</span> ApolloLink <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">&quot;apollo-link&quot;</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token punctuation">{</span> rxjs <span class="token keyword">as</span> rxJsLink <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">&quot;apollo-link-rxjs&quot;</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token punctuation">{</span> graphql <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">&quot;reactive-graphql&quot;</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> client <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">ApolloClient</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
<span class="token comment">// If addTypename:true, the query will fail due to __typename</span>
<span class="token comment">// being added to the schema. reactive-graphql does not</span>
<span class="token comment">// support __typename at this moment.</span>
cache<span class="token punctuation">:</span> <span class="token keyword">new</span> <span class="token class-name">InMemoryCache</span><span class="token punctuation">(</span><span class="token punctuation">{</span> addTypename<span class="token punctuation">:</span> <span class="token boolean">false</span> <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
link<span class="token punctuation">:</span> ApolloLink<span class="token punctuation">.</span><span class="token function">from</span><span class="token punctuation">(</span><span class="token punctuation">[</span>
<span class="token function">rxJsLink</span><span class="token punctuation">(</span><span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
<span class="token keyword">new</span> <span class="token class-name">ApolloLink</span><span class="token punctuation">(</span><span class="token parameter">operation</span> <span class="token operator">=&gt;</span> <span class="token function">graphql</span><span class="token punctuation">(</span>schema<span class="token punctuation">,</span> operation<span class="token punctuation">.</span>query<span class="token punctuation">)</span><span class="token punctuation">)</span>
<span class="token punctuation">]</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre> <div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br></div></div><h3 id="example"><a href="#example" aria-hidden="true" class="header-anchor">#</a> Example</h3> <div class="language-js line-numbers-mode"><div class="highlight-lines"><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><div class="highlighted"> </div><div class="highlighted"> </div><div class="highlighted"> </div><div class="highlighted"> </div><div class="highlighted"> </div><div class="highlighted"> </div><div class="highlighted"> </div><div class="highlighted"> </div><div class="highlighted"> </div><div class="highlighted"> </div><div class="highlighted"> </div></div><pre class="language-js"><code><span class="token keyword">import</span> <span class="token punctuation">{</span> ApolloClient <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">&quot;apollo-client&quot;</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token punctuation">{</span> InMemoryCache <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">&quot;apollo-cache-inmemory&quot;</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token punctuation">{</span> ApolloLink <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">&quot;apollo-link&quot;</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token punctuation">{</span> rxjs <span class="token keyword">as</span> rxJsLink <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">&quot;apollo-link-rxjs&quot;</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token punctuation">{</span> graphql <span class="token punctuation">}</span> <span class="token keyword">from</span> <span class="token string">&quot;reactive-graphql&quot;</span><span class="token punctuation">;</span>
<span class="token comment">// ...</span>
<span class="token comment">// Initialize Subspace</span>
<span class="token keyword">const</span> subspace <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">Subspace</span><span class="token punctuation">(</span>web3<span class="token punctuation">.</span>currentProvider<span class="token punctuation">)</span><span class="token punctuation">;</span> <span class="token comment">// Use a valid provider (geth, parity, infura...)</span>
<span class="token keyword">await</span> subspace<span class="token punctuation">.</span><span class="token function">init</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> MyContractInstance <span class="token operator">=</span> <span class="token operator">...</span><span class="token punctuation">;</span> <span class="token comment">// TODO: obtain a web3.eth.contract instance</span>
<span class="token keyword">const</span> typeDefs <span class="token operator">=</span> <span class="token template-string"><span class="token template-punctuation string">`</span><span class="token string">
type MyEvent {
someValue: Int
anotherValue: String
}
type Query {
myEvents: MyEvent!
}
</span><span class="token template-punctuation string">`</span></span><span class="token punctuation">;</span>
<span class="token keyword">const</span> resolvers <span class="token operator">=</span> <span class="token punctuation">{</span>
Query<span class="token punctuation">:</span> <span class="token punctuation">{</span>
<span class="token function-variable function">myEvents</span><span class="token punctuation">:</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=&gt;</span> <span class="token punctuation">{</span>
<span class="token keyword">return</span> subspace<span class="token punctuation">.</span><span class="token function">trackEvent</span><span class="token punctuation">(</span>MyContractInstance<span class="token punctuation">,</span> <span class="token string">'MyEvent'</span><span class="token punctuation">,</span> <span class="token punctuation">{</span>filter<span class="token punctuation">:</span> <span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">,</span> fromBlock<span class="token punctuation">:</span> <span class="token number">1</span><span class="token punctuation">}</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> schema <span class="token operator">=</span> <span class="token function">makeExecutableSchema</span><span class="token punctuation">(</span><span class="token punctuation">{</span> typeDefs<span class="token punctuation">,</span> resolvers <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">const</span> client <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">ApolloClient</span><span class="token punctuation">(</span><span class="token punctuation">{</span>
<span class="token comment">// If addTypename:true, the query will fail due to __typename</span>
<span class="token comment">// being added to the schema. reactive-graphql does not</span>
<span class="token comment">// support __typename at this moment.</span>
cache<span class="token punctuation">:</span> <span class="token keyword">new</span> <span class="token class-name">InMemoryCache</span><span class="token punctuation">(</span><span class="token punctuation">{</span> addTypename<span class="token punctuation">:</span> <span class="token boolean">false</span> <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
link<span class="token punctuation">:</span> ApolloLink<span class="token punctuation">.</span><span class="token function">from</span><span class="token punctuation">(</span><span class="token punctuation">[</span>
<span class="token function">rxJsLink</span><span class="token punctuation">(</span><span class="token punctuation">{</span><span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
<span class="token keyword">new</span> <span class="token class-name">ApolloLink</span><span class="token punctuation">(</span><span class="token parameter">operation</span> <span class="token operator">=&gt;</span> <span class="token function">graphql</span><span class="token punctuation">(</span>schema<span class="token punctuation">,</span> operation<span class="token punctuation">.</span>query<span class="token punctuation">)</span><span class="token punctuation">)</span>
<span class="token punctuation">]</span><span class="token punctuation">)</span>
<span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre><div class="line-numbers-wrapper"><span class="line-number">1</span><br><span class="line-number">2</span><br><span class="line-number">3</span><br><span class="line-number">4</span><br><span class="line-number">5</span><br><span class="line-number">6</span><br><span class="line-number">7</span><br><span class="line-number">8</span><br><span class="line-number">9</span><br><span class="line-number">10</span><br><span class="line-number">11</span><br><span class="line-number">12</span><br><span class="line-number">13</span><br><span class="line-number">14</span><br><span class="line-number">15</span><br><span class="line-number">16</span><br><span class="line-number">17</span><br><span class="line-number">18</span><br><span class="line-number">19</span><br><span class="line-number">20</span><br><span class="line-number">21</span><br><span class="line-number">22</span><br><span class="line-number">23</span><br><span class="line-number">24</span><br><span class="line-number">25</span><br><span class="line-number">26</span><br><span class="line-number">27</span><br><span class="line-number">28</span><br><span class="line-number">29</span><br><span class="line-number">30</span><br><span class="line-number">31</span><br><span class="line-number">32</span><br><span class="line-number">33</span><br><span class="line-number">34</span><br><span class="line-number">35</span><br><span class="line-number">36</span><br><span class="line-number">37</span><br><span class="line-number">38</span><br><span class="line-number">39</span><br><span class="line-number">40</span><br><span class="line-number">41</span><br><span class="line-number">42</span><br><span class="line-number">43</span><br><span class="line-number">44</span><br></div></div><div class="tip custom-block"><p class="custom-block-title">Using react-apollo</p> <p>A practical example can also be found in <code>examples/react-apollo</code>.</p></div></div> <footer class="page-edit"><!----> <!----></footer> <div class="page-nav"><p class="inner"><span class="prev">
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