<?xml version="1.0" encoding="UTF-8"?>
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    Copyright (c) 2018 Oracle and/or its affiliates. All rights reserved.

    This program and the accompanying materials are made available under the
    terms of the Eclipse Public License v. 2.0, which is available at
    http://www.eclipse.org/legal/epl-2.0.

    This Source Code may also be made available under the following Secondary
    Licenses when the conditions for such availability set forth in the
    Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
    version 2 with the GNU Classpath Exception, which is available at
    https://www.gnu.org/software/classpath/license.html.

    SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0

-->

<xsd:schema xmlns="http://www.w3.org/2001/XMLSchema"
            targetNamespace="http://xmlns.jcp.org/xml/ns/javaee"
            xmlns:javaee="http://xmlns.jcp.org/xml/ns/javaee"
            xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            elementFormDefault="qualified"
            attributeFormDefault="unqualified"
            version="4.0">

  <xsd:annotation>
    <xsd:documentation>
      <![CDATA[
      This is the XML Schema for the Servlet 4.0 deployment descriptor.
      The deployment descriptor must be named "META-INF/web-fragment.xml"
      in the web fragment's jar file.  All Servlet deployment descriptors
      must indicate the web application schema by using the Java EE
      namespace:
      
      http://xmlns.jcp.org/xml/ns/javaee
      
      and by indicating the version of the schema by
      using the version element as shown below:
      
      <web-fragment xmlns="http://xmlns.jcp.org/xml/ns/javaee"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      xsi:schemaLocation="..."
      version="4.0">
      ...
      </web-fragment>
      
      The instance documents may indicate the published version of
      the schema using the xsi:schemaLocation attribute for Java EE
      namespace with the following location:
      
      http://xmlns.jcp.org/xml/ns/javaee/web-fragment_4_0.xsd
      
      ]]>
    </xsd:documentation>
  </xsd:annotation>

  <xsd:annotation>
    <xsd:documentation>

      The following conventions apply to all Java EE
      deployment descriptor elements unless indicated otherwise.
      
      - In elements that specify a pathname to a file within the
      same JAR file, relative filenames (i.e., those not
      starting with "/") are considered relative to the root of
      the JAR file's namespace.  Absolute filenames (i.e., those
      starting with "/") also specify names in the root of the
      JAR file's namespace.  In general, relative names are
      preferred.  The exception is .war files where absolute
      names are preferred for consistency with the Servlet API.
      
    </xsd:documentation>
  </xsd:annotation>

  <xsd:include schemaLocation="web-common_4_0.xsd"/>


<!-- **************************************************** -->

  <xsd:element name="web-fragment"
               type="javaee:web-fragmentType">
    <xsd:annotation>
      <xsd:documentation>

        The web-fragment element is the root of the deployment
        descriptor for a web fragment.  Note that the sub-elements
        of this element can be in the arbitrary order. Because of
        that, the multiplicity of the elements of distributable,
        session-config, welcome-file-list, jsp-config, login-config,
        and locale-encoding-mapping-list was changed from "?" to "*"
        in this schema.  However, the deployment descriptor instance
        file must not contain multiple elements of session-config,
        jsp-config, and login-config. When there are multiple elements of
        welcome-file-list or locale-encoding-mapping-list, the container
        must concatenate the element contents.  The multiple occurence
        of the element distributable is redundant and the container
        treats that case exactly in the same way when there is only
        one distributable.
        
      </xsd:documentation>
    </xsd:annotation>
    <xsd:unique name="web-common-servlet-name-uniqueness">
      <xsd:annotation>
        <xsd:documentation>

          The servlet element contains the name of a servlet.
          The name must be unique within the web application.
          
        </xsd:documentation>
      </xsd:annotation>
      <xsd:selector xpath="javaee:servlet"/>
      <xsd:field xpath="javaee:servlet-name"/>
    </xsd:unique>
    <xsd:unique name="web-common-filter-name-uniqueness">
      <xsd:annotation>
        <xsd:documentation>

          The filter element contains the name of a filter.
          The name must be unique within the web application.
          
        </xsd:documentation>
      </xsd:annotation>
      <xsd:selector xpath="javaee:filter"/>
      <xsd:field xpath="javaee:filter-name"/>
    </xsd:unique>
    <xsd:unique name="web-common-ejb-local-ref-name-uniqueness">
      <xsd:annotation>
        <xsd:documentation>

          The ejb-local-ref-name element contains the name of an EJB
          reference. The EJB reference is an entry in the web
          application's environment and is relative to the
          java:comp/env context.  The name must be unique within
          the web application.
          
          It is recommended that name is prefixed with "ejb/".
          
        </xsd:documentation>
      </xsd:annotation>
      <xsd:selector xpath="javaee:ejb-local-ref"/>
      <xsd:field xpath="javaee:ejb-ref-name"/>
    </xsd:unique>
    <xsd:unique name="web-common-ejb-ref-name-uniqueness">
      <xsd:annotation>
        <xsd:documentation>

          The ejb-ref-name element contains the name of an EJB
          reference. The EJB reference is an entry in the web
          application's environment and is relative to the
          java:comp/env context.  The name must be unique within
          the web application.
          
          It is recommended that name is prefixed with "ejb/".
          
        </xsd:documentation>
      </xsd:annotation>
      <xsd:selector xpath="javaee:ejb-ref"/>
      <xsd:field xpath="javaee:ejb-ref-name"/>
    </xsd:unique>
    <xsd:unique name="web-common-resource-env-ref-uniqueness">
      <xsd:annotation>
        <xsd:documentation>

          The resource-env-ref-name element specifies the name of
          a resource environment reference; its value is the
          environment entry name used in the web application code.
          The name is a JNDI name relative to the java:comp/env
          context and must be unique within a web application.
          
        </xsd:documentation>
      </xsd:annotation>
      <xsd:selector xpath="javaee:resource-env-ref"/>
      <xsd:field xpath="javaee:resource-env-ref-name"/>
    </xsd:unique>
    <xsd:unique name="web-common-message-destination-ref-uniqueness">
      <xsd:annotation>
        <xsd:documentation>

          The message-destination-ref-name element specifies the name of
          a message destination reference; its value is the
          environment entry name used in the web application code.
          The name is a JNDI name relative to the java:comp/env
          context and must be unique within a web application.
          
        </xsd:documentation>
      </xsd:annotation>
      <xsd:selector xpath="javaee:message-destination-ref"/>
      <xsd:field xpath="javaee:message-destination-ref-name"/>
    </xsd:unique>
    <xsd:unique name="web-common-res-ref-name-uniqueness">
      <xsd:annotation>
        <xsd:documentation>

          The res-ref-name element specifies the name of a
          resource manager connection factory reference.  The name
          is a JNDI name relative to the java:comp/env context.
          The name must be unique within a web application.
          
        </xsd:documentation>
      </xsd:annotation>
      <xsd:selector xpath="javaee:resource-ref"/>
      <xsd:field xpath="javaee:res-ref-name"/>
    </xsd:unique>
    <xsd:unique name="web-common-env-entry-name-uniqueness">
      <xsd:annotation>
        <xsd:documentation>

          The env-entry-name element contains the name of a web
          application's environment entry.  The name is a JNDI
          name relative to the java:comp/env context.  The name
          must be unique within a web application.
          
        </xsd:documentation>
      </xsd:annotation>
      <xsd:selector xpath="javaee:env-entry"/>
      <xsd:field xpath="javaee:env-entry-name"/>
    </xsd:unique>
    <xsd:key name="web-common-role-name-key">
      <xsd:annotation>
        <xsd:documentation>

          A role-name-key is specified to allow the references
          from the security-role-refs.
          
        </xsd:documentation>
      </xsd:annotation>
      <xsd:selector xpath="javaee:security-role"/>
      <xsd:field xpath="javaee:role-name"/>
    </xsd:key>
    <xsd:keyref name="web-common-role-name-references"
                refer="javaee:web-common-role-name-key">
      <xsd:annotation>
        <xsd:documentation>

          The keyref indicates the references from
          security-role-ref to a specified role-name.
          
        </xsd:documentation>
      </xsd:annotation>
      <xsd:selector xpath="javaee:servlet/javaee:security-role-ref"/>
      <xsd:field xpath="javaee:role-link"/>
    </xsd:keyref>
  </xsd:element>


<!-- **************************************************** -->

  <xsd:complexType name="web-fragmentType">
    <xsd:choice minOccurs="0"
                maxOccurs="unbounded">
      <xsd:element name="name"
                   type="javaee:java-identifierType"/>
      <xsd:group ref="javaee:web-commonType"/>
      <xsd:element name="ordering"
                   type="javaee:orderingType"/>
    </xsd:choice>
    <xsd:attributeGroup ref="javaee:web-common-attributes"/>
  </xsd:complexType>


<!-- **************************************************** -->

  <xsd:complexType name="orderingType">
    <xsd:annotation>
      <xsd:documentation>

        Please see section 8.2.2 of the specification for details.
        
      </xsd:documentation>
    </xsd:annotation>
    <xsd:sequence>
      <xsd:element name="after"
                   type="javaee:ordering-orderingType"
                   minOccurs="0"
                   maxOccurs="1"/>
      <xsd:element name="before"
                   type="javaee:ordering-orderingType"
                   minOccurs="0"
                   maxOccurs="1"/>
    </xsd:sequence>
  </xsd:complexType>


<!-- **************************************************** -->

  <xsd:complexType name="ordering-orderingType">
    <xsd:annotation>
      <xsd:documentation>

        This element contains a sequence of "name" elements, each of
        which
        refers to an application configuration resource by the "name"
        declared on its web.xml fragment.  This element can also contain
        a single "others" element which specifies that this document
        comes
        before or after other documents within the application.
        See section 8.2.2 of the specification for details.
        
      </xsd:documentation>
    </xsd:annotation>
    <xsd:sequence>
      <xsd:element name="name"
                   type="javaee:java-identifierType"
                   minOccurs="0"
                   maxOccurs="unbounded"/>
      <xsd:element name="others"
                   type="javaee:ordering-othersType"
                   minOccurs="0"
                   maxOccurs="1"/>
    </xsd:sequence>
  </xsd:complexType>

</xsd:schema>
