SOLR-9596: Add Solr support for SimpleTextCodec, via <codecFactory class=solr.SimpleTextCodecFactory/> in solrconfig.xml (per-field specification in the schema is not possible).

dev-tools/idea/solr/core/src/java/solr-core.iml

@@ -32,5 +32,6 @@
     <orderEntry type="module" module-name="join" />
     <orderEntry type="module" module-name="sandbox" />
     <orderEntry type="module" module-name="backward-codecs" />
+    <orderEntry type="module" module-name="codecs" />
   </component>
 </module>

solr/CHANGES.txt

@@ -196,6 +196,9 @@ New Features
 
 * SOLR-10521: introducing sort=childfield(field) asc for searching by {!parent} (Mikhail Khludnev) 
 
+* SOLR-9596: Add Solr support for SimpleTextCodec, via <codecFactory class="solr.SimpleTextCodecFactory"/>
+  in solrconfig.xml (per-field specification in the schema is not possible). (Steve Rowe)
+
 Optimizations
 ----------------------
 

solr/core/src/java/org/apache/solr/core/SimpleTextCodecFactory.java

@@ -0,0 +1,38 @@
+/*
+ * 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.core;
+
+import org.apache.lucene.codecs.Codec;
+import org.apache.lucene.codecs.simpletext.SimpleTextCodec;
+import org.apache.solr.common.util.NamedList;
+
+public class SimpleTextCodecFactory extends CodecFactory {
+  private Codec codec;
+
+  @Override
+  public void init(NamedList args) {
+    super.init(args);
+    assert codec == null;
+    codec = new SimpleTextCodec();
+  }
+
+  @Override
+  public Codec getCodec() {
+    return codec;
+  }
+}

solr/core/src/test-files/solr/collection1/conf/schema-SimpleTextCodec.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!--
+ 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.
+-->
+<schema name="SimpleTextCodec" version="1.6">
+  <fieldType name="string" class="solr.StrField"/>
+
+  <fieldType name="text_general" class="solr.TextField" positionIncrementGap="100">
+    <analyzer>
+      <tokenizer class="solr.StandardTokenizerFactory"/>
+      <filter class="solr.LowerCaseFilterFactory"/>
+    </analyzer>
+  </fieldType>
+
+  <field name="id" type="string" indexed="true" stored="true" docValues="true" required="true"/>
+  <field name="text" type="text_general" indexed="true" stored="true"/>
+
+  <uniqueKey>id</uniqueKey>
+</schema>

solr/core/src/test-files/solr/collection1/conf/solrconfig_SimpleTextCodec.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!--
+ 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.
+-->
+
+<config>
+  <luceneMatchVersion>${tests.luceneMatchVersion:LATEST}</luceneMatchVersion>
+  <xi:include href="solrconfig.snippet.randomindexconfig.xml" xmlns:xi="http://www.w3.org/2001/XInclude"/>
+  <directoryFactory name="DirectoryFactory" class="${solr.directoryFactory:solr.RAMDirectoryFactory}"/>
+  <schemaFactory class="ClassicIndexSchemaFactory"/>
+  <requestHandler name="standard" class="solr.StandardRequestHandler"/>
+  <codecFactory class="solr.SimpleTextCodecFactory"/>
+</config>

solr/core/src/test/org/apache/solr/core/TestSimpleTextCodec.java

@@ -0,0 +1,67 @@
+/*
+ * 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.core;
+
+import org.apache.lucene.index.IndexWriter;
+import org.apache.lucene.index.SegmentInfo;
+import org.apache.lucene.index.SegmentInfos;
+import org.apache.solr.SolrTestCaseJ4;
+import org.apache.solr.search.SolrIndexSearcher;
+import org.apache.solr.util.RefCounted;
+import org.junit.BeforeClass;
+
+public class TestSimpleTextCodec extends SolrTestCaseJ4 {
+
+  @BeforeClass
+  public static void beforeClass() throws Exception {
+    initCore("solrconfig_SimpleTextCodec.xml", "schema-SimpleTextCodec.xml");
+  }
+
+  public void test() throws Exception {
+    SolrConfig config = h.getCore().getSolrConfig();
+    String codecFactory =  config.get("codecFactory/@class");
+    assertEquals("Unexpected solrconfig codec factory", "solr.SimpleTextCodecFactory", codecFactory);
+
+    assertEquals("Unexpected core codec", "SimpleText", h.getCore().getCodec().getName());
+
+    RefCounted<IndexWriter> writerRef = h.getCore().getSolrCoreState().getIndexWriter(h.getCore());
+    try {
+      IndexWriter writer = writerRef.get();
+      assertEquals("Unexpected codec in IndexWriter config", 
+          "SimpleText", writer.getConfig().getCodec().getName()); 
+    } finally {
+      writerRef.decref();
+    }
+
+    assertU(add(doc("id","1", "text","textual content goes here")));
+    assertU(commit());
+
+    RefCounted<SolrIndexSearcher> searcherRef = h.getCore().getSearcher();
+    try {
+      SolrIndexSearcher searcher = searcherRef.get();
+      SegmentInfos infos = SegmentInfos.readLatestCommit(searcher.getIndexReader().directory());
+      SegmentInfo info = infos.info(infos.size() - 1).info;
+      assertEquals("Unexpected segment codec", "SimpleText", info.getCodec().getName());
+    } finally {
+      searcherRef.decref();
+    }
+
+    assertQ(req("q", "id:1"),
+        "*[count(//doc)=1]");
+  }
+}