From 2919ef8222a2bc394f1f984c6b9ffd3dbbd8f1a0 Mon Sep 17 00:00:00 2001
From: lukaseder <lukas.eder@gmail.com>
Date: Sun, 26 Mar 2017 22:17:29 +0200
Subject: [PATCH] [#5955] Add support for ALTER SEQUENCE

---
 .../main/java/org/jooq/impl/ParserImpl.java   | 22 +++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
index 35acc9ddcf..ae207cc0ba 100644
--- a/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
+++ b/jOOQ/src/main/java/org/jooq/impl/ParserImpl.java
@@ -219,6 +219,7 @@ import org.jooq.AlterIndexFinalStep;
 import org.jooq.AlterIndexStep;
 import org.jooq.AlterSchemaFinalStep;
 import org.jooq.AlterSchemaStep;
+import org.jooq.AlterSequenceStep;
 import org.jooq.AlterTableDropStep;
 import org.jooq.AlterTableFinalStep;
 import org.jooq.AlterTableStep;
@@ -970,6 +971,8 @@ class ParserImpl implements Parser {
             return parseAlterIndex(ctx);
         else if (parseKeywordIf(ctx, "SCHEMA"))
             return parseAlterSchema(ctx);
+        else if (parseKeywordIf(ctx, "SEQUENCE"))
+            return parseAlterSequence(ctx);
         else if (parseKeywordIf(ctx, "VIEW"))
             return parseAlterView(ctx);
         else
@@ -1079,6 +1082,25 @@ class ParserImpl implements Parser {
             : ctx.dsl.createSequence(schemaName);
     }
 
+    private static final DDLQuery parseAlterSequence(ParserContext ctx) {
+        boolean ifExists = parseKeywordIf(ctx, "IF EXISTS");
+        Sequence<?> sequenceName = parseSequenceName(ctx);
+
+        AlterSequenceStep s1 = ifExists
+            ? ctx.dsl.alterSequenceIfExists(sequenceName)
+            : ctx.dsl.alterSequence(sequenceName);
+
+        if (parseKeywordIf(ctx, "RENAME TO"))
+            return s1.renameTo(parseSequenceName(ctx));
+        else if (parseKeywordIf(ctx, "RESTART"))
+            if (parseKeywordIf(ctx, "WITH"))
+                return s1.restartWith(parseUnsignedInteger(ctx));
+            else
+                return s1.restart();
+        else
+            throw ctx.unexpectedToken();
+    }
+
     private static final DDLQuery parseDropSequence(ParserContext ctx) {
         boolean ifExists = parseKeywordIf(ctx, "IF EXISTS");
         Sequence<?> sequenceName = parseSequenceName(ctx);