refactor

src/main/java/com/alibaba/druid/sql/visitor/ParameterizedVisitor.java

@@ -15,7 +15,7 @@
  */
 package com.alibaba.druid.sql.visitor;
 
-public interface ParameterizedVisitor extends SQLPrintableVisitor {
+public interface ParameterizedVisitor extends PrintableVisitor {
 
     int getReplaceCount();
 

src/main/java/com/alibaba/druid/sql/visitor/PrintableVisitor.java

@@ -0,0 +1,23 @@
+/*
+ * Copyright 1999-2011 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.alibaba.druid.sql.visitor;
+
+public interface PrintableVisitor extends SQLASTVisitor {
+
+    void print(char value);
+
+    void print(String text);
+}

src/main/java/com/alibaba/druid/sql/visitor/SQLASTOutputVisitor.java

@@ -120,7 +120,7 @@ import com.alibaba.druid.sql.ast.statement.SQLUpdateStatement;
 import com.alibaba.druid.sql.ast.statement.SQLUseStatement;
 import com.alibaba.druid.sql.ast.statement.SQLWithSubqueryClause;
 
-public class SQLASTOutputVisitor extends SQLASTVisitorAdapter implements SQLPrintableVisitor {
+public class SQLASTOutputVisitor extends SQLASTVisitorAdapter implements PrintableVisitor {
 
     protected final Appendable appender;
     private String             indent       = "\t";

src/main/java/com/alibaba/druid/sql/visitor/SQLASTOutputVisitorUtils.java

@@ -1,3 +1,18 @@
+/*
+ * Copyright 1999-2011 Alibaba Group Holding Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
 package com.alibaba.druid.sql.visitor;
 
 import com.alibaba.druid.sql.ast.expr.SQLIntegerExpr;
@@ -5,12 +20,12 @@ import com.alibaba.druid.sql.ast.expr.SQLNumberExpr;
 
 public class SQLASTOutputVisitorUtils {
 
-    public static boolean visit(SQLPrintableVisitor visitor, SQLIntegerExpr x) {
+    public static boolean visit(PrintableVisitor visitor, SQLIntegerExpr x) {
         visitor.print(x.getNumber().toString());
         return false;
     }
     
-    public static boolean visit(SQLPrintableVisitor visitor, SQLNumberExpr x) {
+    public static boolean visit(PrintableVisitor visitor, SQLNumberExpr x) {
         visitor.print(x.getNumber().toString());
         return false;
     }

src/main/java/com/alibaba/druid/sql/visitor/SQLPrintableVisitor.java

@@ -1,8 +0,0 @@
-package com.alibaba.druid.sql.visitor;
-
-public interface SQLPrintableVisitor extends SQLASTVisitor {
-
-    void print(char value);
-
-    void print(String text);
-}