I am trying to get eclipselink working with GWT's requestfactory. I
keep getting the following error:

Caused by: java.lang.RuntimeException: Server Error: No Persistence
provider for EntityManager named default

Reading around the web, it seems that persistence.xml must live in WEB-
INF/classes/META-INF/. I tried creating a folder under src/META-INF
and placing persistence.xml in it, but it does not get included in war/
WEB-INF/classes/ when I build the project in eclipse. Any suggestions?
I am using GWT 2.3, EclipseLink 2.3, and eclipse 3.7. How can I get
eclipse to include persistence.xml into the right location?

persistence.xml

<?xml version="1.0" encoding="UTF-8" ?> <persistence xmlns:xsi="http://
www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/persistence
http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd";
version="2.0" xmlns="http://java.sun.com/xml/ns/persistence";>

<persistence-unit name="default" transaction-type="RESOURCE_LOCAL">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>

    <class>com.manning.gwtia.ch08.v2.server.Contact</class>

    <properties>
        <property name="javax.persistence.jdbc.driver"
value="org.postgresql.Driver" />
        <property name="javax.persistence.jdbc.url"
value="jdbc:postgresql://localhost:5432/example" />
        <property name="javax.persistence.jdbc.user" value="" />
        <property name="javax.persistence.jdbc.password" value="" />

        <!-- EclipseLink should create the database schema
automatically -->
        <property name="eclipselink.ddl-generation" value="create-
tables" />
        <property name="eclipselink.ddl-generation.output-mode"
value="database" />
    </properties>

</persistence-unit>

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