refactor select parser 8th version

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

@@ -61,7 +61,7 @@ public class MySQLSelectParser extends AbstractSelectParser {
     }
     
     @Override
-    protected void customizedQuery() {
+    protected final void customizedSelect() {
         parseLimit();
         if (getSqlParser().equalAny(DefaultKeyword.PROCEDURE)) {
             throw new SQLParsingUnsupportedException(getSqlParser().getLexer().getCurrentToken().getType());

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

@@ -49,7 +49,7 @@ public class OracleSelectParser extends AbstractSelectParser {
     }
     
     @Override
-    protected void customizedBetweenWhereAndGroupBy() {
+    protected final void customizedBetweenWhereAndGroupBy() {
         skipHierarchicalQueryClause();
     }
     

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

@@ -47,7 +47,7 @@ public class PostgreSQLSelectParser extends AbstractSelectParser {
     }
     
     @Override
-    protected void customizedQuery() {
+    protected final void customizedSelect() {
         if (getSqlParser().equalAny(PostgreSQLKeyword.WINDOW)) {
             throw new SQLParsingUnsupportedException(PostgreSQLKeyword.WINDOW);
         }

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

@@ -119,7 +119,7 @@ public class SQLServerSelectParser extends AbstractSelectParser {
     }
     
     @Override
-    protected void customizedSelect() {
+    protected final void customizedSelect() {
         if (getSqlParser().equalAny(DefaultKeyword.FOR)) {
             parseFor();
         }

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

@@ -93,9 +93,9 @@ public abstract class AbstractSelectParser implements SQLStatementParser {
         parseGroupBy();
         customizedBetweenGroupByAndOrderBy();
         parseOrderBy();
-        customizedQuery();
-        queryRest();
         customizedSelect();
+        processUnsupportedTokens();
+        // TODO move to rewrite
         appendDerivedColumns();
         appendDerivedOrderBy();
         return selectStatement;
@@ -345,7 +345,7 @@ public abstract class AbstractSelectParser implements SQLStatementParser {
     }
     
     protected final void parseTableFactor() {
-        int beginPosition = sqlParser.getLexer().getCurrentToken().getEndPosition() - sqlParser.getLexer().getCurrentToken().getLiterals().length();
+        final int beginPosition = sqlParser.getLexer().getCurrentToken().getEndPosition() - sqlParser.getLexer().getCurrentToken().getLiterals().length();
         sqlParser.skipAll(DefaultKeyword.AS);
         String literals = sqlParser.getLexer().getCurrentToken().getLiterals();
         sqlParser.getLexer().nextToken();
@@ -387,18 +387,14 @@ public abstract class AbstractSelectParser implements SQLStatementParser {
         }
     }
     
-    protected void customizedQuery() {
-    }
+    protected abstract void customizedSelect();
     
-    protected final void queryRest() {
+    private void processUnsupportedTokens() {
         if (sqlParser.equalAny(DefaultKeyword.UNION, DefaultKeyword.EXCEPT, DefaultKeyword.INTERSECT, DefaultKeyword.MINUS)) {
             throw new SQLParsingUnsupportedException(sqlParser.getLexer().getCurrentToken().getType());
         }
     }
     
-    protected void customizedSelect() {
-    }
-    
     private void appendDerivedColumns() {
         if (appendDerivedColumnsFlag) {
             return;