bug fixed for sql parser

src/test/java/com/alibaba/druid/bvt/sql/mysql/MySqlSelectTest_16.java

@@ -0,0 +1,83 @@
+/*
+ * 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.bvt.sql.mysql;
+
+import java.util.List;
+
+import org.junit.Assert;
+
+import com.alibaba.druid.sql.MysqlTest;
+import com.alibaba.druid.sql.SQLUtils;
+import com.alibaba.druid.sql.ast.SQLExpr;
+import com.alibaba.druid.sql.ast.SQLStatement;
+import com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr;
+import com.alibaba.druid.sql.ast.expr.SQLBinaryOperator;
+import com.alibaba.druid.sql.ast.expr.SQLNotExpr;
+import com.alibaba.druid.sql.ast.statement.SQLSelect;
+import com.alibaba.druid.sql.ast.statement.SQLSelectStatement;
+import com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock;
+import com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser;
+import com.alibaba.druid.sql.dialect.mysql.visitor.MySqlSchemaStatVisitor;
+import com.alibaba.druid.stat.TableStat;
+
+public class MySqlSelectTest_16 extends MysqlTest {
+
+    public void test_0() throws Exception {
+        String sql = "select a from t where not a>1 and not b<1";
+
+        MySqlStatementParser parser = new MySqlStatementParser(sql);
+        List<SQLStatement> statementList = parser.parseStatementList();
+        SQLStatement stmt = statementList.get(0);
+
+        SQLSelectStatement selectStmt = (SQLSelectStatement) stmt;
+
+        SQLSelect select = selectStmt.getSelect();
+        Assert.assertNotNull(select.getQuery());
+        MySqlSelectQueryBlock queryBlock = (MySqlSelectQueryBlock) select.getQuery();
+        Assert.assertNull(queryBlock.getOrderBy());
+
+        {
+            SQLExpr where = queryBlock.getWhere();
+            Assert.assertTrue(where instanceof SQLBinaryOpExpr);
+            SQLBinaryOpExpr binaryWhere = (SQLBinaryOpExpr) where;
+            Assert.assertEquals(binaryWhere.getOperator(), SQLBinaryOperator.BooleanAnd);
+
+            Assert.assertTrue(binaryWhere.getLeft() instanceof SQLNotExpr);
+            Assert.assertTrue(binaryWhere.getRight() instanceof SQLNotExpr);
+        }
+
+        print(statementList);
+
+        Assert.assertEquals(1, statementList.size());
+
+        MySqlSchemaStatVisitor visitor = new MySqlSchemaStatVisitor();
+        stmt.accept(visitor);
+
+        Assert.assertEquals(1, visitor.getTables().size());
+        Assert.assertEquals(2, visitor.getColumns().size());
+        Assert.assertEquals(2, visitor.getConditions().size());
+        Assert.assertEquals(0, visitor.getOrderByColumns().size());
+
+        Assert.assertTrue(visitor.getTables().containsKey(new TableStat.Name("t")));
+
+        String output = SQLUtils.toMySqlString(stmt);
+        Assert.assertEquals("SELECT a" //
+                            + "\nFROM t"//
+                            + "\nWHERE NOT a > 1"//
+                            + "\n\tAND NOT b < 1", //
+                            output);
+    }
+}