refactor parseSelectRest

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/parsing/parser/dialect/mysql/MySQLSelectParser.java

@@ -21,7 +21,6 @@ import com.dangdang.ddframe.rdb.sharding.api.rule.ShardingRule;
 import com.dangdang.ddframe.rdb.sharding.parsing.lexer.LexerEngine;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.HavingSQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.SelectListSQLParser;
-import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.SelectRestSQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.WhereSQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.statement.dql.select.AbstractSelectParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.statement.dql.select.SelectStatement;
@@ -37,15 +36,12 @@ public final class MySQLSelectParser extends AbstractSelectParser {
     
     private final MySQLLimitSQLParser limitSQLParser;
     
-    private final SelectRestSQLParser selectRestSQLParser;
-    
     public MySQLSelectParser(final ShardingRule shardingRule, final LexerEngine lexerEngine) {
-        super(shardingRule, lexerEngine, 
-                new MySQLDistinctSQLParser(lexerEngine), new SelectListSQLParser(shardingRule, lexerEngine), new MySQLTableSQLParser(shardingRule, lexerEngine), 
-                new WhereSQLParser(lexerEngine), new MySQLGroupBySQLParser(lexerEngine), new HavingSQLParser(lexerEngine), new MySQLOrderBySQLParser(lexerEngine));
+        super(shardingRule, lexerEngine, new MySQLDistinctSQLParser(lexerEngine), new SelectListSQLParser(shardingRule, lexerEngine), new MySQLTableSQLParser(shardingRule, lexerEngine), 
+                new WhereSQLParser(lexerEngine), new MySQLGroupBySQLParser(lexerEngine), new HavingSQLParser(lexerEngine), new MySQLOrderBySQLParser(lexerEngine), 
+                new MySQLSelectRestSQLParser(lexerEngine));
         selectOptionSQLParser = new MySQLSelectOptionSQLParser(lexerEngine);
         limitSQLParser = new MySQLLimitSQLParser(lexerEngine);
-        selectRestSQLParser = new MySQLSelectRestSQLParser(lexerEngine);
     }
     
     @Override
@@ -59,7 +55,7 @@ public final class MySQLSelectParser extends AbstractSelectParser {
         parseHaving();
         parseOrderBy(selectStatement);
         parseLimit(selectStatement);
-        selectRestSQLParser.parse();
+        parseSelectRest();
     }
     
     private void parseSelectOption() {

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/parsing/parser/dialect/oracle/OracleSelectParser.java

@@ -37,16 +37,13 @@ public final class OracleSelectParser extends AbstractSelectParser {
     
     private final OracleForParser forParser;
     
-    private final SelectRestSQLParser selectRestSQLParser;
-    
     public OracleSelectParser(final ShardingRule shardingRule, final LexerEngine lexerEngine) {
-        super(shardingRule, lexerEngine, 
-                new OracleDistinctSQLParser(lexerEngine), new OracleSelectListSQLParser(shardingRule, lexerEngine), new OracleTableSQLParser(shardingRule, lexerEngine), 
-                new OracleWhereSQLParser(lexerEngine), new OracleGroupBySQLParser(lexerEngine), new HavingSQLParser(lexerEngine), new OracleOrderBySQLParser(lexerEngine));
+        super(shardingRule, lexerEngine, new OracleDistinctSQLParser(lexerEngine), new OracleSelectListSQLParser(shardingRule, lexerEngine), new OracleTableSQLParser(shardingRule, lexerEngine), 
+                new OracleWhereSQLParser(lexerEngine), new OracleGroupBySQLParser(lexerEngine), new HavingSQLParser(lexerEngine), new OracleOrderBySQLParser(lexerEngine), 
+                new SelectRestSQLParser(lexerEngine));
         hierarchicalQueryClauseParser = new OracleHierarchicalQueryClauseParser(shardingRule, lexerEngine);
         modelClauseParser = new OracleModelClauseParser(lexerEngine);
         forParser = new OracleForParser(lexerEngine);
-        selectRestSQLParser = new SelectRestSQLParser(lexerEngine);
     }
     
     @Override
@@ -61,7 +58,7 @@ public final class OracleSelectParser extends AbstractSelectParser {
         parseModelClause(selectStatement);
         parseOrderBy(selectStatement);
         parseFor(selectStatement);
-        selectRestSQLParser.parse();
+        parseSelectRest();
     }
     
     private void parseHierarchicalQueryClause(final SelectStatement selectStatement) {

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/parsing/parser/dialect/postgresql/PostgreSQLSelectParser.java

@@ -23,7 +23,6 @@ import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.DistinctSQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.GroupBySQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.HavingSQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.SelectListSQLParser;
-import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.SelectRestSQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.TableSQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.WhereSQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.statement.dql.select.AbstractSelectParser;
@@ -40,15 +39,12 @@ public final class PostgreSQLSelectParser extends AbstractSelectParser {
     
     private final PostgreSQLForSQLParser forSQLParser;
     
-    private final SelectRestSQLParser selectRestSQLParser;
-    
     public PostgreSQLSelectParser(final ShardingRule shardingRule, final LexerEngine lexerEngine) {
         super(shardingRule, lexerEngine, new DistinctSQLParser(lexerEngine), 
                 new SelectListSQLParser(shardingRule, lexerEngine), new TableSQLParser(shardingRule, lexerEngine), new WhereSQLParser(lexerEngine), new GroupBySQLParser(lexerEngine), 
-                new HavingSQLParser(lexerEngine), new PostgreSQLOrderBySQLParser(lexerEngine));
+                new HavingSQLParser(lexerEngine), new PostgreSQLOrderBySQLParser(lexerEngine), new PostgreSQLSelectRestSQLParser(lexerEngine));
         limitSQLParser = new PostgreSQLLimitSQLParser(lexerEngine);
         forSQLParser = new PostgreSQLForSQLParser(lexerEngine);
-        selectRestSQLParser = new PostgreSQLSelectRestSQLParser(lexerEngine);
     }
     
     @Override
@@ -62,7 +58,7 @@ public final class PostgreSQLSelectParser extends AbstractSelectParser {
         parseOrderBy(selectStatement);
         parseLimit(selectStatement);
         parseFor();
-        selectRestSQLParser.parse();
+        parseSelectRest();
     }
     
     private void parseLimit(final SelectStatement selectStatement) {

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/parsing/parser/dialect/sqlserver/SQLServerSelectParser.java

@@ -39,16 +39,13 @@ public final class SQLServerSelectParser extends AbstractSelectParser {
     
     private final SQLServerForSQLParser forSQLParser;
     
-    private final SelectRestSQLParser selectRestSQLParser;
-    
     public SQLServerSelectParser(final ShardingRule shardingRule, final LexerEngine lexerEngine) {
-        super(shardingRule, lexerEngine, 
-                new DistinctSQLParser(lexerEngine), new SQLServerSelectListSQLParser(shardingRule, lexerEngine), new SQLServerTableSQLParser(shardingRule, lexerEngine), 
-                new SQLServerWhereSQLParser(lexerEngine), new GroupBySQLParser(lexerEngine), new HavingSQLParser(lexerEngine), new SQLServerOrderBySQLParser(lexerEngine));
+        super(shardingRule, lexerEngine, new DistinctSQLParser(lexerEngine), new SQLServerSelectListSQLParser(shardingRule, lexerEngine), new SQLServerTableSQLParser(shardingRule, lexerEngine), 
+                new SQLServerWhereSQLParser(lexerEngine), new GroupBySQLParser(lexerEngine), new HavingSQLParser(lexerEngine), new SQLServerOrderBySQLParser(lexerEngine), 
+                new SelectRestSQLParser(lexerEngine));
         sqlServerTopParser = new SQLServerTopParser(lexerEngine);
         offsetSQLParser = new SQLServerOffsetSQLParser(lexerEngine);
         forSQLParser = new SQLServerForSQLParser(lexerEngine);
-        selectRestSQLParser = new SelectRestSQLParser(lexerEngine);
     }
     
     @Override
@@ -63,7 +60,7 @@ public final class SQLServerSelectParser extends AbstractSelectParser {
         parseOrderBy(selectStatement);
         parseOffset(selectStatement);
         parseFor();
-        selectRestSQLParser.parse();
+        parseSelectRest();
     }
     
     private void parseTop(final SelectStatement selectStatement) {

sharding-jdbc-core/src/main/java/com/dangdang/ddframe/rdb/sharding/parsing/parser/statement/dql/select/AbstractSelectParser.java

@@ -32,6 +32,7 @@ import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.GroupBySQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.HavingSQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.OrderBySQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.SelectListSQLParser;
+import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.SelectRestSQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.TableSQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.sql.WhereSQLParser;
 import com.dangdang.ddframe.rdb.sharding.parsing.parser.statement.SQLStatementParser;
@@ -80,6 +81,8 @@ public abstract class AbstractSelectParser implements SQLStatementParser {
     
     private final OrderBySQLParser orderBySQLParser;
     
+    private final SelectRestSQLParser selectRestSQLParser;
+    
     private final List<SelectItem> items = new LinkedList<>();
     
     @Override
@@ -147,6 +150,10 @@ public abstract class AbstractSelectParser implements SQLStatementParser {
         orderBySQLParser.parse(selectStatement);
     }
     
+    protected final void parseSelectRest() {
+        selectRestSQLParser.parse();
+    }
+    
     private void appendDerivedColumns(final SelectStatement selectStatement) {
         ItemsToken itemsToken = new ItemsToken(selectStatement.getSelectListLastPosition());
         appendAvgDerivedColumns(itemsToken, selectStatement);