增加mysql创建存储过程时参数可选类型IN|OUT|INOUT

src/main/java/com/alibaba/druid/sql/dialect/mysql/ast/clause/MySqlParameter.java

@@ -32,8 +32,17 @@ public class MySqlParameter extends MySqlObjectImpl {
     private SQLExpr     name;
     private SQLDataType dataType;
     private SQLExpr     defaultValue;
+    private ParameterType paramType;
 
-    public SQLExpr getDefaultValue() {
+    public ParameterType getParamType() {
+		return paramType;
+	}
+
+	public void setParamType(ParameterType paramType) {
+		this.paramType = paramType;
+	}
+
+	public SQLExpr getDefaultValue() {
         return defaultValue;
     }
 
@@ -66,5 +75,15 @@ public class MySqlParameter extends MySqlObjectImpl {
         }
         visitor.endVisit(this);
     }
+    /**
+     * mysql procedure parameter type
+     */
+    public static enum ParameterType
+    {
+    	DEFAULT,
+    	IN,//in
+    	OUT,//out
+    	INOUT//inout
+    }
 
 }

src/main/java/com/alibaba/druid/sql/dialect/mysql/parser/MySqlStatementParser.java

@@ -73,6 +73,7 @@ import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlIterateStatement;
 import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlLeaveStatement;
 import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlLoopStatement;
 import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlParameter;
+import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlParameter.ParameterType;
 import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlRepeatStatement;
 import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlSelectIntoStatement;
 import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlWhileStatement;
@@ -2785,7 +2786,28 @@ public class MySqlStatementParser extends SQLStatementParser {
 				parameter.setDataType(dataType);
 
 				parameter.setDefaultValue(new SQLQueryExpr(select));
+				
+			} else if (lexer.token() == Token.IN || lexer.token() == Token.OUT || lexer.token() == Token.INOUT) {
+				
+				if(lexer.token()==Token.IN)
+				{
+					parameter.setParamType(ParameterType.IN);
+				}
+				else if(lexer.token()==Token.OUT)
+				{
+					parameter.setParamType(ParameterType.OUT);
+				}
+				else if(lexer.token()==Token.INOUT)
+				{
+					parameter.setParamType(ParameterType.INOUT);
+				}
+				lexer.nextToken();
+
+				parameter.setName(this.exprParser.name());
+
+				parameter.setDataType(this.exprParser.parseDataType());
 			} else {
+				parameter.setParamType(ParameterType.DEFAULT);//default parameter type is in
 				parameter.setName(this.exprParser.name());
 				parameter.setDataType(this.exprParser.parseDataType());
 

src/main/java/com/alibaba/druid/sql/dialect/mysql/visitor/MySqlOutputVisitor.java

@@ -59,6 +59,7 @@ import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlIterateStatement;
 import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlLeaveStatement;
 import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlLoopStatement;
 import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlParameter;
+import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlParameter.ParameterType;
 import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlRepeatStatement;
 import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlSelectIntoStatement;
 import com.alibaba.druid.sql.dialect.mysql.ast.clause.MySqlWhileStatement;
@@ -3277,6 +3278,19 @@ public class MySqlOutputVisitor extends SQLASTOutputVisitor implements MySqlASTV
             decrementIndent();
 
         } else {
+        	
+        	if(x.getParamType()==ParameterType.IN)
+        	{
+        		print("IN ");
+        	}
+        	else if(x.getParamType()==ParameterType.OUT)
+        	{
+        		print("OUT ");
+        	}
+        	else if(x.getParamType()==ParameterType.INOUT)
+        	{
+        		print("INOUT ");
+        	}
             x.getName().accept(this);
             print(" ");
 

src/main/java/com/alibaba/druid/sql/parser/Keywords.java

@@ -135,7 +135,7 @@ public class Keywords {
         map.put("GRANT", Token.GRANT);
         map.put("REVOKE", Token.REVOKE);
         
-        // MySql procedure by:zz
+        // MySql procedure: add by zz
         map.put("WHILE", Token.WHILE);
         map.put("DO", Token.DO);
         map.put("DECLARE", Token.DECLARE);
@@ -148,6 +148,8 @@ public class Keywords {
         map.put("CLOSE", Token.CLOSE);
         map.put("CURSOR", Token.CURSOR);
         map.put("FETCH", Token.FETCH);
+        map.put("OUT", Token.OUT);
+        map.put("INOUT", Token.INOUT);
         
         DEFAULT_KEYWORDS = new Keywords(map);
     }

src/main/java/com/alibaba/druid/sql/parser/Token.java

@@ -128,7 +128,7 @@ public enum Token {
     SHOW("SHOW"),
     REPLACE("REPLACE"),
     
-    // MySql procedure by:zz
+    // MySql procedure add by zz
     WHILE("WHILE"),
     DO("DO"),
     LEAVE("LEAVE"),
@@ -137,6 +137,8 @@ public enum Token {
     UNTIL("UNTIL"),
     OPEN("OPEN"),
     CLOSE("CLOSE"),
+    OUT("OUT"),
+    INOUT("INOUT"),
     
     //postgresql
     WINDOW("WINDOW"),