<?xml version="1.0" encoding="UTF-8"?>

<!--
~ Copyright 2021, Red Hat, Inc., and individual contributors
~
~ Licensed 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.
-->

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
           xmlns:jakartaee="https://jakarta.ee/xml/ns/jakartaee"
           elementFormDefault="qualified"
           targetNamespace="https://jakarta.ee/xml/ns/jakartaee"
           version="4.1">

  <xs:annotation>
    <xs:documentation>
      <![CDATA[[
         Jakarta Contexts and Dependency Injection (CDI) defines
         a set of complementary services that help improve the structure
         of application code. beans.xml is used to enable CDI services
         for the current bean archive as well as to enable named
         interceptors, decorators and alternatives for the current bean
         archive.
         

         This is the XML Schema for the beans.xml deployment
         descriptor for CDI 4.1.  The deployment descriptor must be named
         "META-INF/beans.xml" or "WEB-INF/beans.xml" in a war file.
         All application deployment descriptors may indicate
         the application schema by using the Java EE namespace:

         https://jakarta.ee/xml/ns/jakartaee

         and may indicate the version of the schema by
         using the version element as shown below:

         <beans xmlns="https://jakarta.ee/xml/ns/jakartaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee
         https://jakarta.ee/xml/ns/jakartaee/beans_4_1.xsd"
         version="4.1">
            ...
         </beans>

        The deployment descriptor may indicate the published version of
        the schema using the xsi:schemaLocation attribute for the Java EE
        namespace with the following location:

        https://jakarta.ee/xml/ns/jakartaee/beans_4_1.xsd

     ]]>
    </xs:documentation>
  </xs:annotation>

  <xs:element name="beans">
    <xs:annotation>
      <xs:documentation>
        Bean classes of enabled beans must be
        deployed in bean archives. A library jar, EJB jar,
        application client jar or rar archive is a bean archive if
        it has a file named beans.xml in the META-INF directory. The
        WEB-INF/classes directory of a war is a bean archive if
        there is a file named beans.xml in the WEB-INF directory of
        the war. A directory in the JVM classpath is a bean archive
        if it has a file named beans.xml in the META-INF directory.

        When running in a CDI Lite environment, the bean-discovery-mode
        attribute is the only configuration value read from a beans.xml file.
      </xs:documentation>
    </xs:annotation>
    <xs:complexType>
      <xs:all >
        <xs:element ref="jakartaee:interceptors" minOccurs="0"/>
        <xs:element ref="jakartaee:decorators" minOccurs="0" />
        <xs:element ref="jakartaee:alternatives" minOccurs="0" />
        <xs:element ref="jakartaee:scan" minOccurs="0" />
        <xs:element ref="jakartaee:trim" minOccurs="0"/>
      </xs:all>
      <xs:attribute name="version" default="4.1">
        <xs:annotation>
          <xs:documentation>
            The version of CDI this beans.xml is for. If the version is "4.1" (or
            later), then the attribute bean-discovery-mode must be added.
          </xs:documentation>
        </xs:annotation>
        <xs:simpleType>
          <xs:restriction base="xs:token">
            <xs:pattern value="\.?[0-9]+(\.[0-9]+)*"/>
          </xs:restriction>
        </xs:simpleType>
      </xs:attribute>
      <xs:attribute name="bean-discovery-mode" use="optional" default="annotated">
        <xs:annotation>
          <xs:documentation>
            It is strongly recommended you use "annotated". This is now the default and it
            is also the default as of 4.1 when an empty beans.xml file is seen. When running
            in a CDI Lite  environment, this is the only aspect of the beans.xml file that
            is used.

            If the bean discovery mode is "all", then all types in this
            archive will be considered. If the bean discovery mode is
            "annotated", then only those types with bean defining annotations will be
            considered. If the bean discovery mode is "none", then no
            types will be considered.
          </xs:documentation>
        </xs:annotation>
        <xs:simpleType>
          <xs:restriction base="xs:string">
            <xs:enumeration value="annotated">
              <xs:annotation>
                <xs:documentation>
                  Only those types with bean defining annotations will be
                  considered.
                </xs:documentation>
              </xs:annotation>
            </xs:enumeration>
            <xs:enumeration value="all">
              <xs:annotation>
                <xs:documentation>
                  All types in this archive will be considered.
                </xs:documentation>
              </xs:annotation>
            </xs:enumeration>
            <xs:enumeration value="none">
              <xs:annotation>
                <xs:documentation>
                  This archive will be ignored.
                </xs:documentation>
              </xs:annotation>
            </xs:enumeration>
          </xs:restriction>
        </xs:simpleType>
      </xs:attribute>
    </xs:complexType>
  </xs:element>

  <xs:element name="scan">
    <xs:annotation>
      <xs:documentation>
        <![CDATA[The <scan> element allows exclusion of classes and packages from consideration. Various filters may be applied, and may be conditionally activated.]]>
      </xs:documentation>
    </xs:annotation>
    <xs:complexType>
      <xs:sequence maxOccurs="unbounded" minOccurs="0">
        <xs:element name="exclude">
          <xs:annotation>
            <xs:documentation>
              <![CDATA[The exclude filter allows exclusion of classes and packages through the use of Ant-style glob matches. For example, <exclude name="com.acme.**"> would exclude all classes and subpackages of com.acme.]]>
            </xs:documentation>
          </xs:annotation>
          <xs:complexType>
            <xs:choice maxOccurs="unbounded" minOccurs="0">
              <xs:element name="if-class-available">
                <xs:annotation>
                  <xs:documentation>
                    <![CDATA[Activates the filter only if the class specified can be loaded.]]>
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:attribute name="name" type="xs:string" use="required">
                    <xs:annotation>
                      <xs:documentation>
                        <![CDATA[If the named class can be loaded then, then the filter will be activated.]]>
                      </xs:documentation>
                    </xs:annotation>
                  </xs:attribute>
                </xs:complexType>
              </xs:element>
              <xs:element name="if-class-not-available">
                <xs:annotation>
                  <xs:documentation>
                    <![CDATA[Activates the filter only if the class specified cannot be loaded.]]>
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:attribute name="name" type="xs:string" use="required">
                    <xs:annotation>
                      <xs:documentation>
                        <![CDATA[If the named class cannot be loaded then, then the filter will be activated.]]>
                      </xs:documentation>
                    </xs:annotation>
                  </xs:attribute>
                </xs:complexType>
              </xs:element>
              <xs:element name="if-system-property">
                <xs:annotation>
                  <xs:documentation>
                    <![CDATA[If both name and value are specified, then the named system property must be set, and have the specified value for the filter to be activated. If only the name is specified, then the named system property must be set for the filter to be activated.]]>
                  </xs:documentation>
                </xs:annotation>
                <xs:complexType>
                  <xs:attribute name="name" type="xs:string" use="required">
                    <xs:annotation>
                      <xs:documentation>
                        <![CDATA[The name of the system property that must be set for the filter to be active.]]>
                      </xs:documentation>
                    </xs:annotation>
                  </xs:attribute>
                  <xs:attribute name="value" type="xs:string" use="optional">
                    <xs:annotation>
                      <xs:documentation>
                        <![CDATA[Optional. The value that the system property must have for the filter to be active.]]>
                      </xs:documentation>
                    </xs:annotation>
                  </xs:attribute>
                </xs:complexType>
              </xs:element>
            </xs:choice>
            <xs:attribute name="name" use="required">
              <xs:annotation>
                <xs:documentation>
                  <![CDATA[The name of the class or package to exclude. Ant-style glob matches are supported. For example, <exclude name="com.acme.**"> would exclude all classes and subpackages of com.acme.]]>
                </xs:documentation>
              </xs:annotation>
              <xs:simpleType>
                <xs:restriction base="xs:string">
                  <xs:pattern value="([a-zA-Z_$][a-zA-Z\d_$]*\.)*([a-zA-Z_$][a-zA-Z\d_$]*|\*|\*\*)"/>
                </xs:restriction>
              </xs:simpleType>
            </xs:attribute>
          </xs:complexType>
        </xs:element>
      </xs:sequence>
    </xs:complexType>
  </xs:element>

  <xs:element name="interceptors">
    <xs:annotation>
      <xs:documentation>
        By default, a bean archive has no enabled
        interceptors bound via interceptor bindings. An interceptor
        must be explicitly enabled by listing its class under the
        &lt;interceptors&gt; element of the beans.xml file of the
        bean archive. The order of the interceptor declarations
        determines the interceptor ordering. Interceptors which
        occur earlier in the list are called first. If the same
        class is listed twice under the &lt;interceptors&gt;
        element, the container automatically detects the problem and
        treats it as a deployment problem.
      </xs:documentation>
    </xs:annotation>
    <xs:complexType>
      <xs:choice minOccurs="0" maxOccurs="unbounded">
        <xs:element name="class" type="xs:string">
          <xs:annotation>
            <xs:documentation>
              Each child &lt;class&gt; element
              must specify the name of an interceptor class. If
              there is no class with the specified name, or if
              the class with the specified name is not an
              interceptor class, the container automatically
              detects the problem and treats it as a deployment
              problem.
            </xs:documentation>
          </xs:annotation>
        </xs:element>
      </xs:choice>
    </xs:complexType>
  </xs:element>

  <xs:element name="decorators">
    <xs:annotation>
      <xs:documentation>
        By default, a bean archive has no enabled
        decorators. A decorator must be explicitly enabled by
        listing its bean class under the &lt;decorators&gt; element
        of the beans.xml file of the bean archive. The order of the
        decorator declarations determines the decorator ordering.
        Decorators which occur earlier in the list are called first.
        If the same class is listed twice under the
        &lt;decorators&gt; element, the container automatically
        detects the problem and treats it as a deployment problem.
      </xs:documentation>
    </xs:annotation>
    <xs:complexType>
      <xs:choice minOccurs="0" maxOccurs="unbounded">
        <xs:element name="class" type="xs:string">
          <xs:annotation>
            <xs:documentation>
              Each child &lt;class&gt; element
              must specify the name of a decorator class. If
              there is no class with the specified name, or if
              the class with the specified name is not a
              decorator class, the container automatically
              detects the problem and treats it as a deployment
              problem.
            </xs:documentation>
          </xs:annotation>
        </xs:element>
      </xs:choice>
    </xs:complexType>
  </xs:element>

  <xs:element name="alternatives">
    <xs:annotation>
      <xs:documentation>
        An alternative is a bean that must be
        explicitly declared in the beans.xml file if it should be
        available for lookup, injection or EL resolution. By
        default, a bean archive has no selected alternatives. An
        alternative must be explicitly declared using the
        &lt;alternatives&gt; element of the beans.xml file of the
        bean archive. The &lt;alternatives&gt; element contains a
        list of bean classes and stereotypes. An alternative is
        selected for the bean archive if either: the alternative is
        a managed bean or session bean and the bean class of the
        bean is listed, or the alternative is a producer method,
        field or resource, and the bean class that declares the
        method or field is listed, or any @Alternative stereotype of
        the alternative is listed.
      </xs:documentation>
    </xs:annotation>
    <xs:complexType>
      <xs:choice minOccurs="0" maxOccurs="unbounded">
        <xs:element name="class" type="xs:string">
          <xs:annotation>
            <xs:documentation>
              Each child &lt;class&gt; element
              must specify the name of an alternative bean class.
              If there is no class with the specified name, or if
              the class with the specified name is not an
              alternative bean class, the container automatically
              detects the problem and treats it as a deployment
              problem. If the same class is listed twice under
              the &lt;alternatives&gt; element, the container
              automatically detects the problem and treats it as
              a deployment problem.
            </xs:documentation>
          </xs:annotation>
        </xs:element>

        <xs:element name="stereotype" type="xs:string">
          <xs:annotation>
            <xs:documentation>
              Each child &lt;stereotype&gt;
              element must specify the name of an @Alternative
              stereotype annotation. If there is no annotation
              with the specified name, or the annotation is not
              an @Alternative stereotype, the container
              automatically detects the problem and treats it as
              a deployment problem. If the same stereotype is
              listed twice under the &lt;alternatives&gt;
              element, the container automatically detects the
              problem and treats it as a deployment problem.
            </xs:documentation>
          </xs:annotation>
        </xs:element>
      </xs:choice>
    </xs:complexType>
  </xs:element>
  <xs:element name="trim" type="xs:string" fixed="">
      <xs:annotation>
        <xs:documentation>
          If an explicit bean archive contains the &lt;trim/&lt; element in its beans.xml file, types that don’t have
          either a bean defining annotation (as defined in Bean defining annotations) or any scope annotation,
          are removed from the set of discovered types.
        </xs:documentation>
      </xs:annotation>
  </xs:element>

</xs:schema>
