[PostgreSql] Support jsonb "exists" operator

Author: BoykoAlex

headless-services/commons/jpql/grammars/PostgreSqlLexer.g4

@@ -127,6 +127,18 @@ TYPECAST: '::';
 PERCENT: '%';
 
 PARAM: '$' ([0-9])+;
+
+// JSON/JSONB operators
+JSON_EXTRACT: '->';
+JSON_EXTRACT_TEXT: '->>';
+JSON_PATH_EXTRACT: '#>';
+JSON_PATH_EXTRACT_TEXT: '#>>';
+JSONB_CONTAINS: '@>';
+JSONB_CONTAINED: '<@';
+JSONB_DELETE_PATH: '#-';
+JSONB_EXISTS_ANY: '?|';
+JSONB_EXISTS_ALL: '?&';
+
 //
 
 // OPERATORS (4.1.3)
@@ -144,7 +156,7 @@ Operator:
         )+
         | // special handling for the single-character operators + and -
         [+-]
-        | ('?#' | '?-' | '?-|' | '?|' | '?||' | '<?>')
+        | ('?#' | '?-' | '?-|' | '?||' | '<?>')
     )
     //TODO somehow rewrite this part without using Actions
     {

headless-services/commons/jpql/grammars/PostgreSqlParser.g4

@@ -2115,6 +2115,16 @@ oper_argtypes
 
 any_operator
     : (colid DOT)* all_op
+    | JSON_EXTRACT
+    | JSON_EXTRACT_TEXT
+    | JSON_PATH_EXTRACT
+    | JSON_PATH_EXTRACT_TEXT
+    | JSONB_CONTAINS
+    | JSONB_CONTAINED
+    | JSONB_DELETE_PATH
+    | JSONB_EXISTS_ANY
+    | JSONB_EXISTS_ALL
+    | QUESTION
     ;
 
 operator_with_argtypes_list
@@ -3953,6 +3963,16 @@ mathop
 qual_op
     : Operator
     | OPERATOR OPEN_PAREN any_operator CLOSE_PAREN
+    | JSON_EXTRACT
+    | JSON_EXTRACT_TEXT
+    | JSON_PATH_EXTRACT
+    | JSON_PATH_EXTRACT_TEXT
+    | JSONB_CONTAINS
+    | JSONB_CONTAINED
+    | JSONB_DELETE_PATH
+    | JSONB_EXISTS_ANY
+    | JSONB_EXISTS_ALL
+    | QUESTION
     ;
 
 qual_all_op