refactor & add testcase

src/test/java/com/alibaba/druid/benckmark/sql/OraclePerfTest.java

@@ -0,0 +1,45 @@
+package com.alibaba.druid.benckmark.sql;
+
+import java.util.List;
+
+import junit.framework.TestCase;
+
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlOutputVisitor;
+
+public class OraclePerfTest extends TestCase {
+	private String sql;
+
+	protected void setUp() throws Exception {
+		sql = "SELECT * FROM T";
+	}
+
+	public void test_pert() throws Exception {
+		for (int i = 0; i < 10; ++i) {
+			perfMySql(sql);
+		}
+	}
+
+	long perfMySql(String sql) {
+		long startMillis = System.currentTimeMillis();
+		for (int i = 0; i < 1000 * 1000; ++i) {
+			execMySql(sql);
+		}
+		long millis = System.currentTimeMillis() - startMillis;
+		System.out.println("MySql\t" + millis);
+		return millis;
+	}
+
+	private String execMySql(String sql) {
+		StringBuilder out = new StringBuilder();
+		MySqlOutputVisitor visitor = new MySqlOutputVisitor(out);
+		MySqlStatementParser parser = new MySqlStatementParser(sql);
+		List<SQLStatement> statementList = parser.parseStatementList();
+		for (SQLStatement statement : statementList) {
+			statement.accept(visitor);
+			visitor.println();
+		}
+		return out.toString();
+	}
+}