Query: Add `index.query.default_field` allowing to control the default field used to search on, closes #1657.

src/main/java/org/elasticsearch/action/admin/indices/analyze/TransportAnalyzeAction.java

@@ -41,6 +41,7 @@ import org.elasticsearch.common.settings.ImmutableSettings;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.index.analysis.*;
 import org.elasticsearch.index.mapper.FieldMapper;
+import org.elasticsearch.index.mapper.internal.AllFieldMapper;
 import org.elasticsearch.index.service.IndexService;
 import org.elasticsearch.indices.IndicesService;
 import org.elasticsearch.indices.analysis.IndicesAnalysisService;
@@ -130,7 +131,11 @@ public class TransportAnalyzeAction extends TransportSingleCustomOperationAction
             }
         }
         if (field == null) {
-            field = "_all";
+            if (indexService != null) {
+                field = indexService.queryParserService().defaultField();
+            } else {
+                field = AllFieldMapper.NAME;
+            }
         }
         if (analyzer == null && request.analyzer() != null) {
             if (indexService == null) {

src/main/java/org/elasticsearch/index/query/FuzzyLikeThisQueryParser.java

@@ -25,7 +25,6 @@ import org.apache.lucene.search.FuzzyLikeThisQuery;
 import org.apache.lucene.search.Query;
 import org.elasticsearch.common.inject.Inject;
 import org.elasticsearch.common.xcontent.XContentParser;
-import org.elasticsearch.index.mapper.internal.AllFieldMapper;
 
 import java.io.IOException;
 import java.util.List;
@@ -114,7 +113,7 @@ public class FuzzyLikeThisQueryParser implements QueryParser {
         FuzzyLikeThisQuery query = new FuzzyLikeThisQuery(maxNumTerms, analyzer);
         if (fields == null) {
             // add the default _all field
-            query.addTerms(likeText, AllFieldMapper.NAME, minSimilarity, prefixLength);
+            query.addTerms(likeText, parseContext.defaultField(), minSimilarity, prefixLength);
         } else {
             for (String field : fields) {
                 query.addTerms(likeText, field, minSimilarity, prefixLength);

src/main/java/org/elasticsearch/index/query/IndexQueryParserService.java

@@ -35,6 +35,7 @@ import org.elasticsearch.index.analysis.AnalysisService;
 import org.elasticsearch.index.cache.IndexCache;
 import org.elasticsearch.index.engine.IndexEngine;
 import org.elasticsearch.index.mapper.MapperService;
+import org.elasticsearch.index.mapper.internal.AllFieldMapper;
 import org.elasticsearch.index.settings.IndexSettings;
 import org.elasticsearch.index.similarity.SimilarityService;
 import org.elasticsearch.indices.query.IndicesQueriesRegistry;
@@ -81,6 +82,8 @@ public class IndexQueryParserService extends AbstractIndexComponent {
 
     private final Map<String, FilterParser> filterParsers;
 
+    private String defaultField;
+
     @Inject
     public IndexQueryParserService(Index index, @IndexSettings Settings indexSettings,
                                    IndicesQueriesRegistry indicesQueriesRegistry,
@@ -97,6 +100,8 @@ public class IndexQueryParserService extends AbstractIndexComponent {
         this.indexCache = indexCache;
         this.indexEngine = indexEngine;
 
+        this.defaultField = indexSettings.get("index.query.default_field", AllFieldMapper.NAME);
+
         List<QueryParser> queryParsers = newArrayList();
         if (namedQueryParsers != null) {
             Map<String, Settings> queryParserGroups = indexSettings.getGroups(IndexQueryParserService.Defaults.QUERY_PREFIX);
@@ -148,6 +153,10 @@ public class IndexQueryParserService extends AbstractIndexComponent {
         cache.remove();
     }
 
+    public String defaultField() {
+        return this.defaultField;
+    }
+
     public QueryParser queryParser(String name) {
         return queryParsers.get(name);
     }

src/main/java/org/elasticsearch/index/query/MoreLikeThisQueryParser.java

@@ -26,7 +26,6 @@ import org.apache.lucene.search.Query;
 import org.elasticsearch.common.inject.Inject;
 import org.elasticsearch.common.lucene.search.MoreLikeThisQuery;
 import org.elasticsearch.common.xcontent.XContentParser;
-import org.elasticsearch.index.mapper.internal.AllFieldMapper;
 
 import java.io.IOException;
 import java.util.List;
@@ -53,7 +52,7 @@ public class MoreLikeThisQueryParser implements QueryParser {
         XContentParser parser = parseContext.parser();
 
         MoreLikeThisQuery mltQuery = new MoreLikeThisQuery();
-        mltQuery.setMoreLikeFields(new String[]{AllFieldMapper.NAME});
+        mltQuery.setMoreLikeFields(new String[]{parseContext.defaultField()});
         mltQuery.setSimilarity(parseContext.searchSimilarity());
         Analyzer analyzer = null;
 

src/main/java/org/elasticsearch/index/query/QueryParseContext.java

@@ -130,6 +130,10 @@ public class QueryParseContext {
         return indexQueryParser.indexCache;
     }
 
+    public String defaultField() {
+        return indexQueryParser.defaultField();
+    }
+
     public MapperQueryParser singleQueryParser(QueryParserSettings settings) {
         queryParser.reset(settings);
         return queryParser;

src/main/java/org/elasticsearch/index/query/QueryStringQueryParser.java

@@ -34,7 +34,6 @@ import org.elasticsearch.common.lucene.search.Queries;
 import org.elasticsearch.common.regex.Regex;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.common.xcontent.XContentParser;
-import org.elasticsearch.index.mapper.internal.AllFieldMapper;
 import org.elasticsearch.index.query.support.QueryParsers;
 
 import java.io.IOException;
@@ -68,7 +67,7 @@ public class QueryStringQueryParser implements QueryParser {
         XContentParser parser = parseContext.parser();
 
         MultiFieldQueryParserSettings qpSettings = new MultiFieldQueryParserSettings();
-        qpSettings.defaultField(AllFieldMapper.NAME);
+        qpSettings.defaultField(parseContext.defaultField());
         qpSettings.analyzeWildcard(defaultAnalyzeWildcard);
         qpSettings.allowLeadingWildcard(defaultAllowLeadingWildcard);