Reenable Ant filtering of specific configs which cannot utilize Commons Config. Also fix/cleanup Solr's log4j configuration.

dspace-solr/src/main/webapp/WEB-INF/web.xml

@@ -33,7 +33,16 @@
        <env-entry-type>java.lang.String</env-entry-type>
     </env-entry>
    -->
+    <env-entry>
+        <env-entry-name>solr/home</env-entry-name>
+        <env-entry-value>${dspace.dir}/solr</env-entry-value>
+        <env-entry-type>java.lang.String</env-entry-type>
+    </env-entry>
 
+  <!-- Tell Solr where its log4j configuration is located -->
+  <!-- NOTE: Solr cannot use the default DSpace log4j configuration as it isn't
+       initialized until the DSpace Kernel starts up, and we don't want Solr to
+       depend on the DSpace Kernel/API -->
   <context-param>
       <param-name>log4j.configuration</param-name>
       <param-value>${dspace.dir}/config/log4j-solr.properties</param-value>
@@ -191,13 +200,4 @@
     <welcome-file>admin.html</welcome-file>
   </welcome-file-list>
 
-  <!-- People who want to hardcode their "Solr Home" directly into the
-       WAR File can set the JNDI property here...
-   -->
-    <env-entry>
-        <env-entry-name>solr/home</env-entry-name>
-        <env-entry-value>${dspace.dir}/solr</env-entry-value>
-        <env-entry-type>java.lang.String</env-entry-type>
-    </env-entry>
-
 </web-app>

dspace/config/log4j-solr.properties

@@ -1,9 +1,19 @@
-#  Logging level
-solr.log=logs/
+###########################################################################
+# log4j-solr.properties
+###########################################################################
+
+# This is the log4j configuration file for the Solr webapp that comes bundled
+# with DSpace. Because Solr is a dependency, its log4j settings are kept separate
+# from the default DSpace log4j settings (in log4j.properties).
+#
+# Therefore, this log4j file is standalone. If you wish to tweak the location of
+# your Solr logs, you must do so within this file (or in your DSpace source code).
+
+#  Logging level for Solr
 log4j.rootLogger=INFO, file
 
+#  Console logging options. Switch the above from "file" to "CONSOLE" to enable
 log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
-
 log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
 log4j.appender.CONSOLE.layout.ConversionPattern=%-4r [%t] %-5p %c %x \u2013 %m%n
 
@@ -13,7 +23,7 @@ log4j.appender.file=org.apache.log4j.DailyRollingFileAppender
 log4j.appender.file.DatePattern='.'yyyy-MM-dd
 
 #- File to log to and log format
-log4j.appender.file.File=${dspace.dir}/log/solr.log
+log4j.appender.file.File=${log.dir}/solr.log
 log4j.appender.file.layout=org.apache.log4j.PatternLayout
 log4j.appender.file.layout.ConversionPattern=%d %-5p %c @ %m%n
 

dspace/src/main/config/build.xml

@@ -325,6 +325,13 @@ Common usage:
 
         <mkdir dir="config-temp" />
 
+        <!--
+        Copy over all config files (not including dspace.cfg)
+        -->
+        <copy todir="config-temp" preservelastmodified="true" overwrite="true" failonerror="false">
+            <fileset dir="config" excludes="dspace.cfg" />
+        </copy>
+
         <!--
         Copy designated dspace.cfg
         -->
@@ -340,12 +347,28 @@ Common usage:
             <globmapper from="*" to="*.default" />
         </copy>
 
-        <!--
-        Copy over all other config files (not including dspace.cfg)
-        -->
+        <!-- Finally, filter some very specific configuration files, which cannot
+             be managed by DSpace's configuration service. NOTE: please refrain
+             from appending files to this list unless ABSOLUTELY NECESSARY.
+             Most config files are now auto-interpolated and don't need filtering! -->
         <copy todir="config-temp" preservelastmodified="true" overwrite="true" failonerror="false">
-            <fileset dir="config" excludes="dspace.cfg" />
+            <fileset dir="config">
+                <!-- Filter extra (third-party) log4j files, as log4j requires absolute paths
+                     to its log files. This does NOT include the default log4j.properties file
+                     as its absolute paths are interpolated by DSpace's ConfigurationService. -->
+                <include name="log4j-*.properties"/>
+                <!-- Filter OAI-PMH description so it can include hostname and handle prefix -->
+                <include name="crosswalks/oai/description.xml"/>
+                <!-- Filter sample Tomcat context.xml -->
+                <include name="default.context.xml"/>
+                <!-- Filter RDF configs as these are TTL files -->
+                <include name="modules/rdf/*.ttl"/>
+            </fileset>
+            <filterchain>
+                <expandproperties />
+            </filterchain>
         </copy>
+
         <echo file='config-temp/ant.properties' message='ant.version = ${ant.version}'/>
 
     </target>