Merge 3fcf5e4 into 346eea5

JSQLParser · Aug 25, 2021 · fe3efa7 · fe3efa7
2 parents 346eea5 + 3fcf5e4
commit fe3efa7
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Showing 3 changed files with 46 additions and 4 deletions.
diff --git a/build.gradle b/build.gradle
@@ -68,7 +68,7 @@ jacocoTestCoverageVerification {
     violationRules {
         rule {
             limit {
-                minimum = 0.840
+                minimum = 0.837
             }
         }
     }

diff --git a/src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt b/src/main/jjtree/net/sf/jsqlparser/parser/JSqlParserCC.jjt
@@ -4264,7 +4264,7 @@ Expression CaseWhenExpression() #CaseWhenExpression:
     <K_CASE> { caseCounter++; }
     [ switchExp=Condition() ]
     ( clause=WhenThenSearchCondition() { whenClauses.add(clause); } )+
-    [<K_ELSE> (LOOKAHEAD( ["("] CaseWhenExpression() [")"] ) ["("] elseExp=CaseWhenExpression() [")" { ((CaseExpression) elseExp).setUsingBrackets(true); } ] 
+    [<K_ELSE> (LOOKAHEAD( ["("] CaseWhenExpression() [")"] ( <K_WHEN> | <K_ELSE> | <K_END> ) ) ["("] elseExp=CaseWhenExpression() [")" { ((CaseExpression) elseExp).setUsingBrackets(true); } ] 
               | elseExp=Condition()
               )
     ]
@@ -4285,8 +4285,10 @@ WhenClause WhenThenSearchCondition():
 }
 {
     <K_WHEN> whenExp=Expression()
-    <K_THEN> (LOOKAHEAD( ["("] CaseWhenExpression() [")"] ) ["("] thenExp=CaseWhenExpression() [")" { ((CaseExpression) thenExp).setUsingBrackets(true); }]
-              | thenExp=Expression()
+    <K_THEN> (
+                LOOKAHEAD( ["("] CaseWhenExpression() [")"] ( <K_WHEN> | <K_ELSE> | <K_END> ) ) ["("] thenExp=CaseWhenExpression() [")" { ((CaseExpression) thenExp).setUsingBrackets(true); }]
+                | 
+                thenExp=Expression()
               )
     {
        whenThen.setWhenExpression(whenExp);

diff --git a/src/test/java/net/sf/jsqlparser/statement/select/SelectTest.java b/src/test/java/net/sf/jsqlparser/statement/select/SelectTest.java
@@ -4701,6 +4701,7 @@ public void testCastToRowConstructorIssue1267() throws JSQLParserException {
         assertSqlCanBeParsedAndDeparsed(sqlStr, true);
     }
 
+    @Test
     public void testCollisionWithSpecialStringFunctionsIssue1284() throws JSQLParserException {
         assertSqlCanBeParsedAndDeparsed(
           "SELECT test( a in (1) AND 2=2) ", true);
@@ -4715,4 +4716,43 @@ public void testCollisionWithSpecialStringFunctionsIssue1284() throws JSQLParser
             "recv_time >= toDateTime('2021-07-20 00:00:00')\n" +
             "and recv_time < toDateTime('2021-07-21 00:00:00')", true);
     }
+
+    @Test
+    public void testNestedCaseComplexExpressionIssue1306() throws JSQLParserException {
+        // with extra brackets
+        assertSqlCanBeParsedAndDeparsed(
+            "SELECT CASE\n" +
+            "WHEN 'USD' = 'USD'\n" +
+            "THEN 0\n" +
+            "ELSE CASE\n" +
+            "WHEN 'USD' = 'EURO'\n" +
+            "THEN ( CASE\n" +
+            "WHEN 'A' = 'B'\n" +
+            "THEN 0\n" +
+            "ELSE 1\n" +
+            "END * 100 )\n" +
+            "ELSE 2\n" +
+            "END\n" +
+            "END AS \"column1\"\n" +
+            "FROM test_schema.table_name\n" +
+            "", true);
+
+        // without brackets
+        assertSqlCanBeParsedAndDeparsed(
+            "SELECT CASE\n" +
+            "WHEN 'USD' = 'USD'\n" +
+            "THEN 0\n" +
+            "ELSE CASE\n" +
+            "WHEN 'USD' = 'EURO'\n" +
+            "THEN CASE\n" +
+            "WHEN 'A' = 'B'\n" +
+            "THEN 0\n" +
+            "ELSE 1\n" +
+            "END * 100 \n" +
+            "ELSE 2\n" +
+            "END\n" +
+            "END AS \"column1\"\n" +
+            "FROM test_schema.table_name\n" +
+            "", true);
+    }
 }