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

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Example 41 with MySqlSelectQueryBlock

use of com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock in project Mycat_plus by coderczp.

the class DruidSelectParser method isConditionAlwaysTrue.

private boolean isConditionAlwaysTrue(SQLStatement statement) {
    SQLSelectStatement selectStmt = (SQLSelectStatement) statement;
    SQLSelectQuery sqlSelectQuery = selectStmt.getSelect().getQuery();
    if (sqlSelectQuery instanceof MySqlSelectQueryBlock) {
        MySqlSelectQueryBlock mysqlSelectQuery = (MySqlSelectQueryBlock) selectStmt.getSelect().getQuery();
        SQLExpr expr = mysqlSelectQuery.getWhere();
        Object o = WallVisitorUtils.getValue(expr);
        if (Boolean.TRUE.equals(o)) {
            return true;
        }
        return false;
    } else {
        // union
        return false;
    }
}
Also used : SQLSelectQuery(com.alibaba.druid.sql.ast.statement.SQLSelectQuery) SQLSelectStatement(com.alibaba.druid.sql.ast.statement.SQLSelectStatement) MySqlSelectQueryBlock(com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock) SQLExpr(com.alibaba.druid.sql.ast.SQLExpr)

Example 42 with MySqlSelectQueryBlock

use of com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock in project Mycat_plus by coderczp.

the class DruidSelectParser method statementParse.

@Override
public void statementParse(SchemaConfig schema, RouteResultset rrs, SQLStatement stmt) {
    SQLSelectStatement selectStmt = (SQLSelectStatement) stmt;
    SQLSelectQuery sqlSelectQuery = selectStmt.getSelect().getQuery();
    if (sqlSelectQuery instanceof MySqlSelectQueryBlock) {
        MySqlSelectQueryBlock mysqlSelectQuery = (MySqlSelectQueryBlock) selectStmt.getSelect().getQuery();
        parseOrderAggGroupMysql(schema, stmt, rrs, mysqlSelectQuery);
        // 更改canRunInReadDB属性
        if ((mysqlSelectQuery.isForUpdate() || mysqlSelectQuery.isLockInShareMode()) && rrs.isAutocommit() == false) {
            rrs.setCanRunInReadDB(false);
        }
    } else if (sqlSelectQuery instanceof MySqlUnionQuery) {
    // MySqlUnionQuery unionQuery = (MySqlUnionQuery)sqlSelectQuery;
    // MySqlSelectQueryBlock left = (MySqlSelectQueryBlock)unionQuery.getLeft();
    // MySqlSelectQueryBlock right = (MySqlSelectQueryBlock)unionQuery.getLeft();
    // System.out.println();
    }
}
Also used : MySqlUnionQuery(com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlUnionQuery) SQLSelectQuery(com.alibaba.druid.sql.ast.statement.SQLSelectQuery) SQLSelectStatement(com.alibaba.druid.sql.ast.statement.SQLSelectStatement) MySqlSelectQueryBlock(com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock)

Example 43 with MySqlSelectQueryBlock

use of com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock in project Mycat_plus by coderczp.

the class DruidSelectParser method parseAggGroupCommon.

protected Map<String, String> parseAggGroupCommon(SchemaConfig schema, SQLStatement stmt, RouteResultset rrs, SQLSelectQueryBlock mysqlSelectQuery) {
    Map<String, String> aliaColumns = new HashMap<String, String>();
    Map<String, Integer> aggrColumns = new HashMap<String, Integer>();
    // Added by winbill, 20160314, for having clause, Begin ==>
    List<String> havingColsName = new ArrayList<String>();
    // Added by winbill, 20160314, for having clause, End  <==
    List<SQLSelectItem> selectList = mysqlSelectQuery.getSelectList();
    boolean isNeedChangeSql = false;
    int size = selectList.size();
    boolean isDistinct = mysqlSelectQuery.getDistionOption() == 2;
    for (int i = 0; i < size; i++) {
        SQLSelectItem item = selectList.get(i);
        if (item.getExpr() instanceof SQLAggregateExpr) {
            SQLAggregateExpr expr = (SQLAggregateExpr) item.getExpr();
            String method = expr.getMethodName();
            boolean isHasArgument = !expr.getArguments().isEmpty();
            if (isHasArgument) {
                // Added by winbill, 20160314, for having clause
                String aggrColName = method + "(" + expr.getArguments().get(0) + ")";
                // Added by winbill, 20160314, for having clause
                havingColsName.add(aggrColName);
            }
            // 只处理有别名的情况，无别名添加别名，否则某些数据库会得不到正确结果处理
            int mergeType = MergeCol.getMergeType(method);
            if (MergeCol.MERGE_AVG == mergeType && isRoutMultiNode(schema, rrs)) {
                // 跨分片avg需要特殊处理，直接avg结果是不对的
                String colName = item.getAlias() != null ? item.getAlias() : method + i;
                SQLSelectItem sum = new SQLSelectItem();
                String sumColName = colName + "SUM";
                sum.setAlias(sumColName);
                SQLAggregateExpr sumExp = new SQLAggregateExpr("SUM");
                ObjectUtil.copyProperties(expr, sumExp);
                sumExp.getArguments().addAll(expr.getArguments());
                sumExp.setMethodName("SUM");
                sum.setExpr(sumExp);
                selectList.set(i, sum);
                aggrColumns.put(sumColName, MergeCol.MERGE_SUM);
                // Added by winbill, 20160314, for having clause
                havingColsName.add(sumColName);
                // Added by winbill, 20160314, two aliases for AVG
                havingColsName.add(item.getAlias() != null ? item.getAlias() : "");
                SQLSelectItem count = new SQLSelectItem();
                String countColName = colName + "COUNT";
                count.setAlias(countColName);
                SQLAggregateExpr countExp = new SQLAggregateExpr("COUNT");
                ObjectUtil.copyProperties(expr, countExp);
                countExp.getArguments().addAll(expr.getArguments());
                countExp.setMethodName("COUNT");
                count.setExpr(countExp);
                selectList.add(count);
                aggrColumns.put(countColName, MergeCol.MERGE_COUNT);
                isNeedChangeSql = true;
                aggrColumns.put(colName, mergeType);
                rrs.setHasAggrColumn(true);
            } else if (MergeCol.MERGE_UNSUPPORT != mergeType) {
                String aggColName = null;
                StringBuilder sb = new StringBuilder();
                if (mysqlSelectQuery instanceof MySqlSelectQueryBlock) {
                    expr.accept(new MySqlOutputVisitor(sb));
                } else if (mysqlSelectQuery instanceof OracleSelectQueryBlock) {
                    expr.accept(new OracleOutputVisitor(sb));
                } else if (mysqlSelectQuery instanceof PGSelectQueryBlock) {
                    expr.accept(new PGOutputVisitor(sb));
                } else if (mysqlSelectQuery instanceof SQLServerSelectQueryBlock) {
                    expr.accept(new SQLASTOutputVisitor(sb));
                } else if (mysqlSelectQuery instanceof DB2SelectQueryBlock) {
                    expr.accept(new DB2OutputVisitor(sb));
                }
                aggColName = sb.toString();
                if (item.getAlias() != null && item.getAlias().length() > 0) {
                    aggrColumns.put(item.getAlias(), mergeType);
                    aliaColumns.put(aggColName, item.getAlias());
                } else {
                    // 如果不加，jdbc方式时取不到正确结果   ;修改添加别名
                    item.setAlias(method + i);
                    aggrColumns.put(method + i, mergeType);
                    aliaColumns.put(aggColName, method + i);
                    isNeedChangeSql = true;
                }
                rrs.setHasAggrColumn(true);
                // Added by winbill, 20160314, for having clause
                havingColsName.add(item.getAlias());
                // Added by winbill, 20160314, one alias for non-AVG
                havingColsName.add("");
            }
        } else {
            if (!(item.getExpr() instanceof SQLAllColumnExpr)) {
                String alia = item.getAlias();
                String field = getFieldName(item);
                if (alia == null) {
                    alia = field;
                }
                aliaColumns.put(field, alia);
            }
        }
    }
    if (aggrColumns.size() > 0) {
        rrs.setMergeCols(aggrColumns);
    }
    // 通过优化转换成group by来实现
    if (isDistinct) {
        mysqlSelectQuery.setDistionOption(0);
        SQLSelectGroupByClause groupBy = new SQLSelectGroupByClause();
        for (String fieldName : aliaColumns.keySet()) {
            groupBy.addItem(new SQLIdentifierExpr(fieldName));
        }
        mysqlSelectQuery.setGroupBy(groupBy);
        isNeedChangeSql = true;
    }
    // setGroupByCols
    if (mysqlSelectQuery.getGroupBy() != null) {
        List<SQLExpr> groupByItems = mysqlSelectQuery.getGroupBy().getItems();
        String[] groupByCols = buildGroupByCols(groupByItems, aliaColumns);
        rrs.setGroupByCols(groupByCols);
        rrs.setHavings(buildGroupByHaving(mysqlSelectQuery.getGroupBy().getHaving(), aliaColumns));
        rrs.setHasAggrColumn(true);
        // Added by winbill, 20160314, for having clause
        rrs.setHavingColsName(havingColsName.toArray());
    }
    if (isNeedChangeSql) {
        String sql = stmt.toString();
        rrs.changeNodeSqlAfterAddLimit(schema, getCurentDbType(), sql, 0, -1, false);
        getCtx().setSql(sql);
    }
    return aliaColumns;
}
Also used : SQLSelectGroupByClause(com.alibaba.druid.sql.ast.statement.SQLSelectGroupByClause) DB2OutputVisitor(com.alibaba.druid.sql.dialect.db2.visitor.DB2OutputVisitor) HashMap(java.util.HashMap) LinkedHashMap(java.util.LinkedHashMap) ArrayList(java.util.ArrayList) PGSelectQueryBlock(com.alibaba.druid.sql.dialect.postgresql.ast.stmt.PGSelectQueryBlock) SQLSelectItem(com.alibaba.druid.sql.ast.statement.SQLSelectItem) SQLAllColumnExpr(com.alibaba.druid.sql.ast.expr.SQLAllColumnExpr) SQLASTOutputVisitor(com.alibaba.druid.sql.visitor.SQLASTOutputVisitor) PGOutputVisitor(com.alibaba.druid.sql.dialect.postgresql.visitor.PGOutputVisitor) SQLIdentifierExpr(com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr) MySqlSelectQueryBlock(com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock) SQLExpr(com.alibaba.druid.sql.ast.SQLExpr) OracleOutputVisitor(com.alibaba.druid.sql.dialect.oracle.visitor.OracleOutputVisitor) OracleSelectQueryBlock(com.alibaba.druid.sql.dialect.oracle.ast.stmt.OracleSelectQueryBlock) SQLServerSelectQueryBlock(com.alibaba.druid.sql.dialect.sqlserver.ast.SQLServerSelectQueryBlock) MySqlOutputVisitor(com.alibaba.druid.sql.dialect.mysql.visitor.MySqlOutputVisitor) DB2SelectQueryBlock(com.alibaba.druid.sql.dialect.db2.ast.stmt.DB2SelectQueryBlock) SQLAggregateExpr(com.alibaba.druid.sql.ast.expr.SQLAggregateExpr)

Example 44 with MySqlSelectQueryBlock

use of com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock in project Mycat_plus by coderczp.

the class MycatSchemaStatVisitor method visit.

/* 
     *  遇到 some 将子查询改写成  SELECT MIN(name) FROM subtest1
     *  例如:
     *        select * from subtest where id > some (select name from subtest1);
     *    >/>= some ----> >/>= min
     *    </<= some ----> </<= max
     *    <>   some ----> not in
     *    =    some ----> in
     *    other  不改写
     */
@Override
public boolean visit(SQLSomeExpr x) {
    setSubQueryRelationOrFlag(x);
    List<SQLSelectItem> itemlist = ((SQLSelectQueryBlock) (x.getSubQuery().getQuery())).getSelectList();
    SQLExpr sexpr = itemlist.get(0).getExpr();
    if (x.getParent() instanceof SQLBinaryOpExpr) {
        SQLBinaryOpExpr parentExpr = (SQLBinaryOpExpr) x.getParent();
        SQLAggregateExpr saexpr = null;
        switch(parentExpr.getOperator()) {
            case GreaterThan:
            case GreaterThanOrEqual:
            case NotLessThan:
                this.hasChange = true;
                if (sexpr instanceof SQLIdentifierExpr || (sexpr instanceof SQLPropertyExpr && ((SQLPropertyExpr) sexpr).getOwner() instanceof SQLIdentifierExpr)) {
                    saexpr = new SQLAggregateExpr("MIN");
                    saexpr.getArguments().add(sexpr);
                    saexpr.setParent(itemlist.get(0));
                    itemlist.get(0).setExpr(saexpr);
                }
                SQLQueryExpr maxSubQuery = new SQLQueryExpr(x.getSubQuery());
                x.getSubQuery().setParent(maxSubQuery);
                // 生成新的SQLQueryExpr 替换当前 SQLAllExpr 节点
                if (x.getParent() instanceof SQLBinaryOpExpr) {
                    if (((SQLBinaryOpExpr) x.getParent()).getLeft().equals(x)) {
                        ((SQLBinaryOpExpr) x.getParent()).setLeft(maxSubQuery);
                    } else if (((SQLBinaryOpExpr) x.getParent()).getRight().equals(x)) {
                        ((SQLBinaryOpExpr) x.getParent()).setRight(maxSubQuery);
                    }
                }
                addSubQuerys(x.getSubQuery());
                return super.visit(x.getSubQuery());
            case LessThan:
            case LessThanOrEqual:
            case NotGreaterThan:
                this.hasChange = true;
                if (sexpr instanceof SQLIdentifierExpr || (sexpr instanceof SQLPropertyExpr && ((SQLPropertyExpr) sexpr).getOwner() instanceof SQLIdentifierExpr)) {
                    saexpr = new SQLAggregateExpr("MAX");
                    saexpr.getArguments().add(sexpr);
                    saexpr.setParent(itemlist.get(0));
                    itemlist.get(0).setExpr(saexpr);
                }
                // 生成新的SQLQueryExpr 替换当前 SQLAllExpr 节点
                SQLQueryExpr minSubQuery = new SQLQueryExpr(x.getSubQuery());
                x.getSubQuery().setParent(minSubQuery);
                if (x.getParent() instanceof SQLBinaryOpExpr) {
                    if (((SQLBinaryOpExpr) x.getParent()).getLeft().equals(x)) {
                        ((SQLBinaryOpExpr) x.getParent()).setLeft(minSubQuery);
                    } else if (((SQLBinaryOpExpr) x.getParent()).getRight().equals(x)) {
                        ((SQLBinaryOpExpr) x.getParent()).setRight(minSubQuery);
                    }
                }
                addSubQuerys(x.getSubQuery());
                return super.visit(x.getSubQuery());
            case LessThanOrGreater:
            case NotEqual:
                this.hasChange = true;
                SQLInSubQueryExpr notInSubQueryExpr = new SQLInSubQueryExpr(x.getSubQuery());
                x.getSubQuery().setParent(notInSubQueryExpr);
                notInSubQueryExpr.setNot(true);
                // 生成新的SQLQueryExpr 替换当前 SQLAllExpr 节点
                if (x.getParent() instanceof SQLBinaryOpExpr) {
                    SQLBinaryOpExpr xp = (SQLBinaryOpExpr) x.getParent();
                    if (xp.getLeft().equals(x)) {
                        notInSubQueryExpr.setExpr(xp.getRight());
                    } else if (xp.getRight().equals(x)) {
                        notInSubQueryExpr.setExpr(xp.getLeft());
                    }
                    if (xp.getParent() instanceof MySqlSelectQueryBlock) {
                        ((MySqlSelectQueryBlock) xp.getParent()).setWhere(notInSubQueryExpr);
                    } else if (xp.getParent() instanceof SQLBinaryOpExpr) {
                        SQLBinaryOpExpr pp = ((SQLBinaryOpExpr) xp.getParent());
                        if (pp.getLeft().equals(xp)) {
                            pp.setLeft(notInSubQueryExpr);
                        } else if (pp.getRight().equals(xp)) {
                            pp.setRight(notInSubQueryExpr);
                        }
                    }
                }
                addSubQuerys(x.getSubQuery());
                return super.visit(notInSubQueryExpr);
            case Equality:
                this.hasChange = true;
                SQLInSubQueryExpr inSubQueryExpr = new SQLInSubQueryExpr(x.getSubQuery());
                x.getSubQuery().setParent(inSubQueryExpr);
                inSubQueryExpr.setNot(false);
                // 生成新的SQLQueryExpr 替换当前 SQLAllExpr 节点
                if (x.getParent() instanceof SQLBinaryOpExpr) {
                    SQLBinaryOpExpr xp = (SQLBinaryOpExpr) x.getParent();
                    if (xp.getLeft().equals(x)) {
                        inSubQueryExpr.setExpr(xp.getRight());
                    } else if (xp.getRight().equals(x)) {
                        inSubQueryExpr.setExpr(xp.getLeft());
                    }
                    if (xp.getParent() instanceof MySqlSelectQueryBlock) {
                        ((MySqlSelectQueryBlock) xp.getParent()).setWhere(inSubQueryExpr);
                    } else if (xp.getParent() instanceof SQLBinaryOpExpr) {
                        SQLBinaryOpExpr pp = ((SQLBinaryOpExpr) xp.getParent());
                        if (pp.getLeft().equals(xp)) {
                            pp.setLeft(inSubQueryExpr);
                        } else if (pp.getRight().equals(xp)) {
                            pp.setRight(inSubQueryExpr);
                        }
                    }
                }
                addSubQuerys(x.getSubQuery());
                return super.visit(inSubQueryExpr);
            default:
                break;
        }
    }
    addSubQuerys(x.getSubQuery());
    return super.visit(x);
}
Also used : SQLSelectItem(com.alibaba.druid.sql.ast.statement.SQLSelectItem) SQLQueryExpr(com.alibaba.druid.sql.ast.expr.SQLQueryExpr) SQLSelectQueryBlock(com.alibaba.druid.sql.ast.statement.SQLSelectQueryBlock) SQLIdentifierExpr(com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr) SQLBinaryOpExpr(com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr) SQLAggregateExpr(com.alibaba.druid.sql.ast.expr.SQLAggregateExpr) SQLPropertyExpr(com.alibaba.druid.sql.ast.expr.SQLPropertyExpr) SQLInSubQueryExpr(com.alibaba.druid.sql.ast.expr.SQLInSubQueryExpr) MySqlSelectQueryBlock(com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock) SQLExpr(com.alibaba.druid.sql.ast.SQLExpr)

Example 45 with MySqlSelectQueryBlock

use of com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock in project Mycat_plus by coderczp.

the class MycatSchemaStatVisitor method visit.

/* 
     *  遇到 any 将子查询改写成  SELECT MIN(name) FROM subtest1
     *  例如:
     *    select * from subtest where id oper any (select name from subtest1);
     *    >/>= any ----> >/>= min
     *    </<= any ----> </<= max
     *    <>   any ----> not in
     *    =    some ----> in
     *    other  不改写
     */
@Override
public boolean visit(SQLAnyExpr x) {
    setSubQueryRelationOrFlag(x);
    List<SQLSelectItem> itemlist = ((SQLSelectQueryBlock) (x.getSubQuery().getQuery())).getSelectList();
    SQLExpr sexpr = itemlist.get(0).getExpr();
    if (x.getParent() instanceof SQLBinaryOpExpr) {
        SQLBinaryOpExpr parentExpr = (SQLBinaryOpExpr) x.getParent();
        SQLAggregateExpr saexpr = null;
        switch(parentExpr.getOperator()) {
            case GreaterThan:
            case GreaterThanOrEqual:
            case NotLessThan:
                this.hasChange = true;
                if (sexpr instanceof SQLIdentifierExpr || (sexpr instanceof SQLPropertyExpr && ((SQLPropertyExpr) sexpr).getOwner() instanceof SQLIdentifierExpr)) {
                    saexpr = new SQLAggregateExpr("MIN");
                    saexpr.getArguments().add(sexpr);
                    saexpr.setParent(itemlist.get(0));
                    itemlist.get(0).setExpr(saexpr);
                }
                SQLQueryExpr maxSubQuery = new SQLQueryExpr(x.getSubQuery());
                x.getSubQuery().setParent(maxSubQuery);
                // 生成新的SQLQueryExpr 替换当前 SQLAllExpr 节点
                if (x.getParent() instanceof SQLBinaryOpExpr) {
                    if (((SQLBinaryOpExpr) x.getParent()).getLeft().equals(x)) {
                        ((SQLBinaryOpExpr) x.getParent()).setLeft(maxSubQuery);
                    } else if (((SQLBinaryOpExpr) x.getParent()).getRight().equals(x)) {
                        ((SQLBinaryOpExpr) x.getParent()).setRight(maxSubQuery);
                    }
                }
                addSubQuerys(x.getSubQuery());
                return super.visit(x.getSubQuery());
            case LessThan:
            case LessThanOrEqual:
            case NotGreaterThan:
                this.hasChange = true;
                if (sexpr instanceof SQLIdentifierExpr || (sexpr instanceof SQLPropertyExpr && ((SQLPropertyExpr) sexpr).getOwner() instanceof SQLIdentifierExpr)) {
                    saexpr = new SQLAggregateExpr("MAX");
                    saexpr.getArguments().add(sexpr);
                    saexpr.setParent(itemlist.get(0));
                    itemlist.get(0).setExpr(saexpr);
                }
                // 生成新的SQLQueryExpr 替换当前 SQLAllExpr 节点
                SQLQueryExpr minSubQuery = new SQLQueryExpr(x.getSubQuery());
                x.subQuery.setParent(minSubQuery);
                if (x.getParent() instanceof SQLBinaryOpExpr) {
                    if (((SQLBinaryOpExpr) x.getParent()).getLeft().equals(x)) {
                        ((SQLBinaryOpExpr) x.getParent()).setLeft(minSubQuery);
                    } else if (((SQLBinaryOpExpr) x.getParent()).getRight().equals(x)) {
                        ((SQLBinaryOpExpr) x.getParent()).setRight(minSubQuery);
                    }
                }
                addSubQuerys(x.getSubQuery());
                return super.visit(x.getSubQuery());
            case LessThanOrGreater:
            case NotEqual:
                this.hasChange = true;
                SQLInSubQueryExpr notInSubQueryExpr = new SQLInSubQueryExpr(x.getSubQuery());
                x.getSubQuery().setParent(notInSubQueryExpr);
                notInSubQueryExpr.setNot(true);
                // 生成新的SQLQueryExpr 替换当前 SQLAllExpr 节点
                if (x.getParent() instanceof SQLBinaryOpExpr) {
                    SQLBinaryOpExpr xp = (SQLBinaryOpExpr) x.getParent();
                    if (xp.getLeft().equals(x)) {
                        notInSubQueryExpr.setExpr(xp.getRight());
                    } else if (xp.getRight().equals(x)) {
                        notInSubQueryExpr.setExpr(xp.getLeft());
                    }
                    if (xp.getParent() instanceof MySqlSelectQueryBlock) {
                        ((MySqlSelectQueryBlock) xp.getParent()).setWhere(notInSubQueryExpr);
                    } else if (xp.getParent() instanceof SQLBinaryOpExpr) {
                        SQLBinaryOpExpr pp = ((SQLBinaryOpExpr) xp.getParent());
                        if (pp.getLeft().equals(xp)) {
                            pp.setLeft(notInSubQueryExpr);
                        } else if (pp.getRight().equals(xp)) {
                            pp.setRight(notInSubQueryExpr);
                        }
                    }
                }
                addSubQuerys(x.getSubQuery());
                return super.visit(notInSubQueryExpr);
            case Equality:
                this.hasChange = true;
                SQLInSubQueryExpr inSubQueryExpr = new SQLInSubQueryExpr(x.getSubQuery());
                x.getSubQuery().setParent(inSubQueryExpr);
                inSubQueryExpr.setNot(false);
                // 生成新的SQLQueryExpr 替换当前 SQLAllExpr 节点
                if (x.getParent() instanceof SQLBinaryOpExpr) {
                    SQLBinaryOpExpr xp = (SQLBinaryOpExpr) x.getParent();
                    if (xp.getLeft().equals(x)) {
                        inSubQueryExpr.setExpr(xp.getRight());
                    } else if (xp.getRight().equals(x)) {
                        inSubQueryExpr.setExpr(xp.getLeft());
                    }
                    if (xp.getParent() instanceof MySqlSelectQueryBlock) {
                        ((MySqlSelectQueryBlock) xp.getParent()).setWhere(inSubQueryExpr);
                    } else if (xp.getParent() instanceof SQLBinaryOpExpr) {
                        SQLBinaryOpExpr pp = ((SQLBinaryOpExpr) xp.getParent());
                        if (pp.getLeft().equals(xp)) {
                            pp.setLeft(inSubQueryExpr);
                        } else if (pp.getRight().equals(xp)) {
                            pp.setRight(inSubQueryExpr);
                        }
                    }
                }
                addSubQuerys(x.getSubQuery());
                return super.visit(inSubQueryExpr);
            default:
                break;
        }
    }
    addSubQuerys(x.getSubQuery());
    return super.visit(x);
}
Also used : SQLSelectItem(com.alibaba.druid.sql.ast.statement.SQLSelectItem) SQLQueryExpr(com.alibaba.druid.sql.ast.expr.SQLQueryExpr) SQLSelectQueryBlock(com.alibaba.druid.sql.ast.statement.SQLSelectQueryBlock) SQLIdentifierExpr(com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr) SQLBinaryOpExpr(com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr) SQLAggregateExpr(com.alibaba.druid.sql.ast.expr.SQLAggregateExpr) SQLPropertyExpr(com.alibaba.druid.sql.ast.expr.SQLPropertyExpr) SQLInSubQueryExpr(com.alibaba.druid.sql.ast.expr.SQLInSubQueryExpr) MySqlSelectQueryBlock(com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock) SQLExpr(com.alibaba.druid.sql.ast.SQLExpr)

Aggregations

MySqlSelectQueryBlock (com.alibaba.druid.sql.dialect.mysql.ast.statement.MySqlSelectQueryBlock)82 SQLSelectStatement (com.alibaba.druid.sql.ast.statement.SQLSelectStatement)41 MySqlStatementParser (com.alibaba.druid.sql.dialect.mysql.parser.MySqlStatementParser)34 SQLStatement (com.alibaba.druid.sql.ast.SQLStatement)31 SQLExpr (com.alibaba.druid.sql.ast.SQLExpr)28 SQLSelect (com.alibaba.druid.sql.ast.statement.SQLSelect)25 MySqlSchemaStatVisitor (com.alibaba.druid.sql.dialect.mysql.visitor.MySqlSchemaStatVisitor)23 SQLSelectQuery (com.alibaba.druid.sql.ast.statement.SQLSelectQuery)19 SQLBinaryOpExpr (com.alibaba.druid.sql.ast.expr.SQLBinaryOpExpr)13 SQLSelectItem (com.alibaba.druid.sql.ast.statement.SQLSelectItem)11 SQLIdentifierExpr (com.alibaba.druid.sql.ast.expr.SQLIdentifierExpr)10 SQLSelectQueryBlock (com.alibaba.druid.sql.ast.statement.SQLSelectQueryBlock)9 SQLAggregateExpr (com.alibaba.druid.sql.ast.expr.SQLAggregateExpr)8 SQLQueryExpr (com.alibaba.druid.sql.ast.expr.SQLQueryExpr)8 HashMap (java.util.HashMap)8 Item (com.actiontech.dble.plan.common.item.Item)7 SQLNonTransientException (java.sql.SQLNonTransientException)7 Test (org.junit.Test)7 SQLInSubQueryExpr (com.alibaba.druid.sql.ast.expr.SQLInSubQueryExpr)6 SQLNullExpr (com.alibaba.druid.sql.ast.expr.SQLNullExpr)6
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