Databases
StackOverflow2013
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    <p>For accessing the same tables of a service in different portlets, do not recreate the services in each one. Instead, create the service in one portlet and copy its <code>docroot/WEB-INF/lib/&lt;pluginmame&gt;-portlet-service.jar</code> to the <code>docroot/WEB-INF/lib/</code> directory of the other portlets. Let us see an example.</p> <p>Suppose you have the following <code>service.xml</code> in a portlet called <code>person-portlet</code>:</p> <pre><code>&lt;service-builder package-path="br.com.seatecnologia.stackoverflow.person"&gt; &lt;author&gt;brandizzi&lt;/author&gt; &lt;namespace&gt;StackOverflowPerson&lt;/namespace&gt; &lt;entity name="Person" local-service="true" remote-service="false"&gt; &lt;column name="personId" type="long" primary="true" /&gt; &lt;column name="name" type="String" /&gt; &lt;column name="age" type="int" /&gt; &lt;/entity&gt; &lt;/service-builder&gt; </code></pre> <p>You generate the services and use it in the original portlet, as usual. For example, you can create a JSP with a form for person registration and person listing:</p> <pre><code>&lt;%@page import="br.com.seatecnologia.stackoverflow.person.service.PersonLocalServiceUtil"%&gt; &lt;%@page import="br.com.seatecnologia.stackoverflow.person.model.Person"%&gt; &lt;%@ taglib uri="http://java.sun.com/portlet" prefix="portlet" %&gt; &lt;%@ taglib uri="http://liferay.com/tld/aui" prefix="aui" %&gt; &lt;portlet:actionURL name="addPerson" var="url" /&gt; &lt;aui:form action="&lt;%= url %&gt;" name="fm" method="POST"&gt; &lt;aui:fieldset&gt; &lt;aui:input name="name" /&gt; &lt;aui:input name="age" /&gt; &lt;aui:button type="submit" /&gt; &lt;/aui:fieldset&gt; &lt;/aui:form&gt; &lt;ul&gt; &lt;% for (Person person : PersonLocalServiceUtil.getPersons(-1, -1)) { %&gt; &lt;li&gt;&lt;%= person.getName() %&gt; : &lt;%= person.getAge() %&gt;&lt;/li&gt; &lt;% } %&gt; &lt;/ul&gt; </code></pre> <p>Now, suppose you need another portlet, some kind of Hello World which presents a greeting message to all registered persons. You create a new portlet plugin - called, let us say, <code>multiple-hello-portlet</code> - and then copies the file <code>person-portlet-service.jar</code> from the <code>person-portlet/docroot/WEB-INF/lib</code> directory to <code>multiple-hello-portlet/docroot/WEB-INF/lib</code>. <em>If you have both</em> portlets deployed in the same portal_, you can use the services created for <code>person-portlet</code> in the <code>multiple-hello-portlet</code> too. For example, your <code>multiple-hello-portlet</code> can have the following JSP <em>and there is no need of reimplementing services</em>:</p> <pre><code>&lt;%@page import="br.com.seatecnologia.stackoverflow.person.service.PersonLocalServiceUtil"%&gt; &lt;%@page import="br.com.seatecnologia.stackoverflow.person.model.Person"%&gt; &lt;%@ taglib uri="http://java.sun.com/portlet" prefix="portlet" %&gt; &lt;% for (Person person : PersonLocalServiceUtil.getPersons(-1, -1)) { %&gt; &lt;div class="portlet-msg-info"&gt; Hello, &lt;%= person.getName() %&gt;! You are &lt;%= person.getAge() %&gt; years old. &lt;/div&gt; &lt;% } %&gt; </code></pre> <p>I created two runnable portlets with these examples, that you can find in <a href="https://bitbucket.org/brandizzi/shared-service-builder-example/src">BitBucket</a>.</p>
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    1. POUsing Liferay's service builder to access existing tables in the database
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    1. COI had actually tried this with no success, the difference is I am accessing the methods from within a java class rather than the JSP.
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      1. USPaul Gilfedder
    2. CO@PaulGilfedder The effect would be the same with this approach if it was on JSP or Java so you may have an issue somewhere else. Are you using an IDE? If so does it give any errors?
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    3. CO@PaulGilfedder that is strange. What is version of the Liferay you are using? Liferay EE ou CE? Is there some SP on it?
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