Examples with MySqlExplainStatement com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlExplainStatement used on opensource projects

Example 1 with MySqlExplainStatement

use of com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlExplainStatement in project druid by alibaba.

the class MySqlSelectTest_177_hints method testHintAll.

@Test
public void testHintAll() throws Exception {
    String[] hintHead = { "/*+TDDL:node('node_name1')*/" // "/*+ TDDL({ 'extra' :{ 'MERGE_UNION' : 'false' }, 'type' : 'direct', 'vtab' : 'drds_shard', 'dbid' : 'corona_qatest_1', 'realtabs' :[ 'drds_shard_04', 'drds_shard_05', 'drds_shard_06' ]}) */",
    // "/!+TDDL: node('node_name1')*/",
    // "/!TDDL: MASTER()*/",
    // "/*TDDL: MASTER()*/"
    };
    for (int i = 0; i < hintHead.length; i++) {
        String sql1 = hintHead[i] + "delete" + hintHead[i] + " from table_1 where id < 10;";
        String sql2 = hintHead[i] + "insert" + hintHead[i] + " into table_1 values('id < 10');";
        String sql3 = hintHead[i] + "update" + hintHead[i] + " table_1 set id = 1 where id < 10;";
        String sql4 = "explain " + hintHead[i] + "delete" + hintHead[i] + " from table_1 where id < 10;";
        String sql5 = "explain " + hintHead[i] + "insert" + hintHead[i] + " into table_1 values('id < 10');";
        String sql6 = "explain " + hintHead[i] + "update" + hintHead[i] + " table_1 set id = 1 where id < 10;";
        String sql7 = hintHead[i] + "replace" + hintHead[i] + " into table_1 values('id < 10');";
        String[] sql = { sql1, sql2, sql7, sql3, sql4, sql5, sql6 };
        for (int j = 0; j < sql.length; j++) {
            System.out.println(sql[j]);
            String parameterizedSql = ParameterizedOutputVisitorUtils.parameterizeForTDDL(sql[j], DbType.mysql, new ArrayList<Object>(), VisitorFeature.OutputParameterizedQuesUnMergeInList, VisitorFeature.OutputParameterizedUnMergeShardingTable, VisitorFeature.OutputParameterizedQuesUnMergeValuesList, VisitorFeature.OutputParameterizedQuesUnMergeOr);
            MySqlStatementParser parser = new MySqlStatementParser(parameterizedSql, SQLParserFeature.TDDLHint, SQLParserFeature.IgnoreNameQuotes);
            try {
                List<SQLStatement> stmtList = parser.parseStatementList();
                for (SQLStatement statement : stmtList) {
                    if (statement instanceof MySqlInsertStatement) {
                        Assert.assertNotNull(((MySqlInsertStatement) statement).getHeadHintsDirect().size() > 0);
                        Assert.assertNotNull(((MySqlInsertStatement) statement).getHint() != null);
                        System.out.println(((MySqlInsertStatement) statement).getHeadHintsDirect());
                        System.out.println(((MySqlInsertStatement) statement).getHint());
                    } else if (statement instanceof SQLReplaceStatement) {
                        Assert.assertNotNull(((SQLReplaceStatement) statement).getHeadHintsDirect().size() > 0);
                        Assert.assertNotNull(((SQLReplaceStatement) statement).getHints().size() > 0);
                        System.out.println(((SQLReplaceStatement) statement).getHeadHintsDirect());
                        System.out.println(((SQLReplaceStatement) statement).getHints());
                    } else if (statement instanceof MySqlDeleteStatement) {
                        Assert.assertNotNull(((MySqlDeleteStatement) statement).getHeadHintsDirect().size() > 0);
                        Assert.assertNotNull(((MySqlDeleteStatement) statement).getHints().size() > 0);
                        System.out.println(((MySqlDeleteStatement) statement).getHeadHintsDirect());
                        System.out.println(((MySqlDeleteStatement) statement).getHints());
                    } else if (statement instanceof MySqlUpdateStatement) {
                        Assert.assertNotNull(((MySqlUpdateStatement) statement).getHeadHintsDirect().size() > 0);
                        Assert.assertNotNull(((MySqlUpdateStatement) statement).getHints().size() > 0);
                        System.out.println(((MySqlUpdateStatement) statement).getHeadHintsDirect());
                        System.out.println(((MySqlUpdateStatement) statement).getHints());
                    } else if (statement instanceof MySqlExplainStatement) {
                        SQLStatement statement1 = ((MySqlExplainStatement) statement).getStatement();
                        if (statement1 instanceof MySqlInsertStatement) {
                            Assert.assertNotNull(((MySqlInsertStatement) statement1).getHint() != null);
                            System.out.println(((MySqlInsertStatement) statement1).getHeadHintsDirect());
                            System.out.println(((MySqlInsertStatement) statement1).getHint());
                        } else if (statement1 instanceof MySqlDeleteStatement) {
                            Assert.assertNotNull(((MySqlDeleteStatement) statement1).getHints().size() > 0);
                            System.out.println(((MySqlDeleteStatement) statement1).getHeadHintsDirect());
                            System.out.println(((MySqlDeleteStatement) statement1).getHints());
                        } else if (statement1 instanceof MySqlUpdateStatement) {
                            Assert.assertNotNull(((MySqlUpdateStatement) statement1).getHints().size() > 0);
                            System.out.println(((MySqlUpdateStatement) statement1).getHeadHintsDirect());
                            System.out.println(((MySqlUpdateStatement) statement1).getHints());
                        }
                        Assert.assertNotNull(((MySqlExplainStatement) statement).getHints().size() > 0);
                        System.out.println(((MySqlExplainStatement) statement).getHints());
                    }
                }
            } catch (com.alibaba.druid.sql.parser.ParserException e) {
                throw e;
            }
        }
    }
}

Example 2 with MySqlExplainStatement

use of com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlExplainStatement in project dble by actiontech.

the class DescribeHandler method handle.

public static void handle(String stmt, ServerConnection c) {
    try {
        SQLStatement statement = RouteStrategyFactory.getRouteStrategy().parserSQL(stmt);
        MySqlExplainStatement describeStatement = (MySqlExplainStatement) statement;
        SchemaInfo schemaInfo = SchemaUtil.getSchemaInfo(c.getUser(), c.getSchema(), describeStatement.getTableName(), null);
        c.routeSystemInfoAndExecuteSQL(RouterUtil.removeSchema(stmt, schemaInfo.getSchema()), schemaInfo, ServerParse.DESCRIBE);
    } catch (Exception e) {
        c.writeErrMessage(ErrorCode.ER_PARSE_ERROR, e.toString());
        return;
    }
}