Query DSL: query_string - Expose QueryParser#setAutoGeneratePhraseQueries, closes elastic#964.

Author: kimchy

modules/elasticsearch/src/main/java/org/elasticsearch/index/query/xcontent/FieldQueryBuilder.java

@@ -45,6 +45,8 @@ public static enum Operator {
 
     private String analyzer;
 
+    private Boolean autoGeneratePhraseQueries;
+
     private Boolean allowLeadingWildcard;
 
     private Boolean lowercaseExpandedTerms;
@@ -184,6 +186,19 @@ public FieldQueryBuilder analyzer(String analyzer) {
         return this;
     }
 
+    /**
+     * Set to true if phrase queries will be automatically generated
+     * when the analyzer returns more than one term from whitespace
+     * delimited text.
+     * NOTE: this behavior may not be suitable for all languages.
+     * <p>
+     * Set to false if phrase queries should only be generated when
+     * surrounded by double quotes.
+     */
+    public void autoGeneratePhraseQueries(boolean autoGeneratePhraseQueries) {
+        this.autoGeneratePhraseQueries = autoGeneratePhraseQueries;
+    }
+
     /**
      * Should leading wildcards be allowed or not. Defaults to <tt>true</tt>.
      */
@@ -266,6 +281,9 @@ public FieldQueryBuilder analyzeWildcard(boolean analyzeWildcard) {
             if (analyzer != null) {
                 builder.field("analyzer", analyzer);
             }
+            if (autoGeneratePhraseQueries != null) {
+                builder.field("auto_generate_phrase_queries", autoGeneratePhraseQueries);
+            }
             if (allowLeadingWildcard != null) {
                 builder.field("allow_leading_wildcard", allowLeadingWildcard);
             }

modules/elasticsearch/src/main/java/org/elasticsearch/index/query/xcontent/QueryStringQueryBuilder.java

@@ -52,6 +52,8 @@ public static enum Operator {
 
     private String analyzer;
 
+    private Boolean autoGeneratePhraseQueries;
+
     private Boolean allowLeadingWildcard;
 
     private Boolean lowercaseExpandedTerms;
@@ -157,6 +159,19 @@ public QueryStringQueryBuilder analyzer(String analyzer) {
         return this;
     }
 
+    /**
+     * Set to true if phrase queries will be automatically generated
+     * when the analyzer returns more than one term from whitespace
+     * delimited text.
+     * NOTE: this behavior may not be suitable for all languages.
+     * <p>
+     * Set to false if phrase queries should only be generated when
+     * surrounded by double quotes.
+     */
+    public void autoGeneratePhraseQueries(boolean autoGeneratePhraseQueries) {
+        this.autoGeneratePhraseQueries = autoGeneratePhraseQueries;
+    }
+
     /**
      * Should leading wildcards be allowed or not. Defaults to <tt>true</tt>.
      */
@@ -260,6 +275,9 @@ public QueryStringQueryBuilder boost(float boost) {
         if (analyzer != null) {
             builder.field("analyzer", analyzer);
         }
+        if (autoGeneratePhraseQueries != null) {
+            builder.field("auto_generate_phrase_queries", autoGeneratePhraseQueries);
+        }
         if (allowLeadingWildcard != null) {
             builder.field("allow_leading_wildcard", allowLeadingWildcard);
         }