factor out commit param parsing: SOLR-185

git-svn-id: https://svn.apache.org/repos/asf/lucene/solr/trunk@524612 13f79535-47bb-0310-9956-ffa450edef68

src/java/org/apache/solr/handler/RequestHandlerUtils.java

@@ -0,0 +1,75 @@
+/**
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+package org.apache.solr.handler;
+
+import java.io.IOException;
+import java.util.HashMap;
+
+import org.apache.solr.request.MapSolrParams;
+import org.apache.solr.request.SolrParams;
+import org.apache.solr.request.SolrQueryRequest;
+import org.apache.solr.request.SolrQueryResponse;
+import org.apache.solr.update.CommitUpdateCommand;
+
+/**
+ * Common helper functions for RequestHandlers
+ * 
+ * @author ryan
+ * @version $Id$
+ * @since solr 1.2
+ */
+public class RequestHandlerUtils
+{
+  /**
+   * A common way to mark the response format as experimental
+   */
+  public static void addExperimentalFormatWarning( SolrQueryResponse rsp )
+  {
+    rsp.add( "WARNING", "This response format is experimental.  It is likely to change in the future." ); 
+  }
+  
+  /**
+   * Check the request parameters and decide if it should commit or optimize.
+   * If it does, it will check parameters for "waitFlush" and "waitSearcher"
+   */
+  public static boolean handleCommit( SolrQueryRequest req, SolrQueryResponse rsp, boolean force ) throws IOException
+  {
+    SolrParams params = req.getParams();
+    if( params == null ) {
+      params = new MapSolrParams( new HashMap<String, String>() ); 
+    }
+    
+    boolean optimize = params.getBool( UpdateParams.OPTIMIZE, false );
+    boolean commit   = params.getBool( UpdateParams.COMMIT,   false );
+    
+    if( optimize || commit || force ) {
+      CommitUpdateCommand cmd = new CommitUpdateCommand( optimize );
+      cmd.waitFlush    = params.getBool( UpdateParams.WAIT_FLUSH,    cmd.waitFlush    );
+      cmd.waitSearcher = params.getBool( UpdateParams.WAIT_SEARCHER, cmd.waitSearcher );
+      req.getCore().getUpdateHandler().commit( cmd );
+      if( optimize ) {
+        rsp.add( "optimize", true );
+      }
+      else {
+        rsp.add( "commit", true );
+      }
+      return true;
+    }
+    return false;
+  }
+}