XMLベースの構成を最小にするという哲学はSeamでは徹底されています。それにもかかわらず、XMLを使ってSeamを構成したいというさまざまな理由が存在します。 Javaコードからデプロイメント固有の情報を切り離したい、 再利用可能なフレームワークを作成可能にしたい、 Seam組み込み機能を構成したい等の理由です。 Seamはコンポーネントを構成する二つのアプローチを提供します。 プロパティファイルまたは web.xml でのプロパティ設定による構成と、 components.xml による構成です。

<components xmlns="http://jboss.com/products/seam/components" 

            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

            xmlns:bpm="http://jboss.com/products/seam/bpm">

    <bpm:jbpm/>

</components

>

<components>

    <component class="org.jboss.seam.bpm.Jbpm"/>

</components

>

<components xmlns="http://jboss.com/products/seam/components" 

            xmlns:persistence="http://jboss.com/products/seam/persistence"



    <persistence:managed-persistence-context name="customerDatabase"

                       persistence-unit-jndi-name="java:/customerEntityManagerFactory"/>

        

    <persistence:managed-persistence-context name="accountingDatabase"

                       persistence-unit-jndi-name="java:/accountingEntityManagerFactory"/>            



</components

>

<components>

    <component name="customerDatabase" 

              class="org.jboss.seam.persistence.ManagedPersistenceContext">

        <property name="persistenceUnitJndiName"

>java:/customerEntityManagerFactory</property>

    </component>

    

    <component name="accountingDatabase"

              class="org.jboss.seam.persistence.ManagedPersistenceContext">

        <property name="persistenceUnitJndiName"

>java:/accountingEntityManagerFactory</property>

    </component>

</components

>

<components xmlns="http://jboss.com/products/seam/components" 

            xmlns:persistence="http://jboss.com/products/seam/persistence"



  <persistence:managed-persistence-context name="productDatabase" 

                                          scope="session"

                     persistence-unit-jndi-name="java:/productEntityManagerFactory"/>        



</components

>

<components>

            

    <component name="productDatabase"

              scope="session"

              class="org.jboss.seam.persistence.ManagedPersistenceContext">

        <property name="persistenceUnitJndiName"

>java:/productEntityManagerFactory</property>

    </component>



</components

>

<components xmlns="http://jboss.com/products/seam/components" 

            xmlns:persistence="http://jboss.com/products/seam/persistence"



  <persistence:managed-persistence-context name="productDatabase" 

                                    auto-create="true"

                     persistence-unit-jndi-name="java:/productEntityManagerFactory"/>        



</components

>

<components>

            

    <component name="productDatabase"

        auto-create="true"

              class="org.jboss.seam.persistence.ManagedPersistenceContext">

        <property name="persistenceUnitJndiName"

>java:/productEntityManagerFactory</property>

    </component>



</components

>

<components>



    <factory name="contact" method="#{contactManager.loadContact}" scope="CONVERSATION"/>



</components

>

<components>



    <factory name="user" value="#{actor}" scope="STATELESS"/>



</components

>

<components>



    <factory name="contact" value="#{contactManager.contact}" scope="STATELESS"/>



</components

>

<components>



    <factory name="session" value="#{entityManager.delegate}" scope="STATELESS" auto-create="true"/>



</components

>

<components>

    <component class="com.helloworld.Hello" name="hello">

        <property name="name"

>#{user.name}</property>

    </component>

    <factory name="message" value="#{hello.message}"/>

</components

>

<component name="hello">

    <property name="name"

>#{user.name}</property>

</component

>

org.jboss.seam.core.manager.conversationTimeout 60000

<core:manager conversation-timeout="60000"/>

<component name="org.jboss.seam.core.manager">

    <property name="conversationTimeout"

>60000</property>

</component

>

org.jboss.seam.bpm.jbpm.processDefinitions order.jpdl.xml, return.jpdl.xml, inventory.jpdl.xml

<bpm:jbpm>

    <bpm:process-definitions>

        <value

>order.jpdl.xml</value>

        <value

>return.jpdl.xml</value>

        <value

>inventory.jpdl.xml</value>

    </bpm:process-definitions>

</bpm:jbpm

>

<component name="org.jboss.seam.bpm.jbpm">

    <property name="processDefinitions">

        <value

>order.jpdl.xml</value>

        <value

>return.jpdl.xml</value>

        <value

>inventory.jpdl.xml</value>

    </property>

</component

>

<component name="issueEditor">

    <property name="issueStatuses">

        <key

>open</key

> <value

>open issue</value>

        <key

>resolved</key

> <value

>issue resolved by developer</value>

        <key

>closed</key

> <value

>resolution accepted by user</value>

    </property>

</component

>

<component name="issueEditor">

   <property name="issueStatusOptions" type="java.util.LinkedHashMap">

      <key

>open</key

> <value

>open issue</value>

      <key

>resolved</key

> <value

>issue resolved by developer</value>

      <key

>closed</key

> <value

>resolution accepted by user</value>

   </property>

</component

>

<drools:managed-working-memory name="policyPricingWorkingMemory"

    rule-base="#{policyPricingRules}"/>

<component name="policyPricingWorkingMemory"

    class="org.jboss.seam.drools.ManagedWorkingMemory">

    <property name="ruleBase"

>#{policyPricingRules}</property>

</component

>

<component name="greeter" class="com.example.action.Greeter">

    <property name="message"

>Nice to see you, #{identity.username}!</property>

</component

>

<framework:entity-home name="myEntityHome"

    class="com.example.action.MyEntityHome" entity-class="com.example.model.MyEntity"

    created-message="'#{myEntityHome.instance.name}' has been successfully added."/>

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

<components xmlns="http://jboss.com/products/seam/components"

            xsi:schemaLocation="http://jboss.com/products/seam/components http://jboss.com/products/seam/components-2.1.xsd">



    <component class="org.jboss.seam.core.init">

        <property name="debug"

>true</property>

        <property name="jndiPattern"

>@jndiPattern@</property>

    </component>

    

</components

>

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

<components xmlns="http://jboss.com/products/seam/components"

            xmlns:core="http://jboss.com/products/seam/core"

            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

            xsi:schemaLocation=

                "http://jboss.com/products/seam/core http://jboss.com/products/seam/core-2.1.xsd 

                 http://jboss.com/products/seam/components http://jboss.com/products/seam/components-2.1.xsd">



    <core:init debug="true" jndi-pattern="@jndiPattern@"/>



</components

>

@Namespace(value="http://jboss.com/products/seam/examples/seampay")

package org.jboss.seam.example.seampay;


import org.jboss.seam.annotations.Namespace;

<components xmlns="http://jboss.com/products/seam/components"

            xmlns:pay="http://jboss.com/products/seam/examples/seampay"

            ... >



    <pay:payment-home new-instance="#{newPayment}"

                      created-message="Created a new payment to #{newPayment.payee}" />



    <pay:payment name="newPayment"

                 payee="Somebody"

                 account="#{selectedAccount}"

                 payment-date="#{currentDatetime}"

                 created-date="#{currentDatetime}" />

     ...

</components

>

<components xmlns="http://jboss.com/products/seam/components"

            xmlns:pay="http://jboss.com/products/seam/examples/seampay"

            ... >



    <pay:payment-home>

        <pay:new-instance

>"#{newPayment}"</pay:new-instance>

        <pay:created-message

>Created a new payment to #{newPayment.payee}</pay:created-message>

    </pay:payment-home>

    

    <pay:payment name="newPayment">

        <pay:payee

>Somebody"</pay:payee>

        <pay:account

>#{selectedAccount}</pay:account>

        <pay:payment-date

>#{currentDatetime}</pay:payment-date>

        <pay:created-date

>#{currentDatetime}</pay:created-date>

     </pay:payment>

     ...

</components

>

package org.jboss.seam.example.seampay;

...

@Name("paymentHome")

public class PaymentController

    extends EntityHome<Payment>

{

    ... 

}

package org.jboss.seam.example.seampay;

...

@Entity

public class Payment

    implements Serializable

{

    ...

}