SOLR-13973: Deprecate existing Tika integration to open door to new ways (#3669)

Author: epugh

solr/modules/extraction/src/java/org/apache/solr/handler/extraction/ExtractingDocumentLoader.java

@@ -58,7 +58,13 @@
 import org.xml.sax.ContentHandler;
 import org.xml.sax.SAXException;
 
-/** The class responsible for loading extracted content into Solr. */
+/**
+ * The class responsible for loading extracted content into Solr.
+ *
+ * @deprecated Will be replaced with something similar that calls out to a separate Tika Server
+ *     process running in its own JVM.
+ */
+@Deprecated(since = "9.10.0")
 public class ExtractingDocumentLoader extends ContentStreamLoader {
 
   private static final Logger log = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());

solr/modules/extraction/src/java/org/apache/solr/handler/extraction/ExtractingRequestHandler.java

@@ -33,7 +33,11 @@
 /**
  * Handler for rich documents like PDF or Word or any other file format that Tika handles that need
  * the text to be extracted first from the document.
+ *
+ * @deprecated Will be replaced with something similar that calls out to a separate Tika Server
+ *     process running in its own JVM.
  */
+@Deprecated(since = "9.10.0")
 public class ExtractingRequestHandler extends ContentStreamHandlerBase
     implements SolrCoreAware, PermissionNameProvider {