Package com.alibaba.druid.sql.dialect.db2.visitor

Examples of com.alibaba.druid.sql.dialect.db2.visitor.DB2EvalVisitor

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                                                   SQLBinaryOperator.LessThanOrEqual, //
                                                   new SQLNumberExpr(count + offset));
        SQLBinaryOpExpr pageCondition = new SQLBinaryOpExpr(gt, SQLBinaryOperator.BooleanAnd, lteq);

        if (query instanceof SQLSelectQueryBlock) {
            DB2SelectQueryBlock queryBlock = (DB2SelectQueryBlock) query;
            if (offset <= 0) {
                queryBlock.setFirst(new SQLNumberExpr(count));
                return SQLUtils.toSQLString(select, dbType);
            }

            SQLAggregateExpr aggregateExpr = new SQLAggregateExpr("ROW_NUMBER");
            SQLOrderBy orderBy = select.getOrderBy();
            aggregateExpr.setOver(new SQLOver(orderBy));
            select.setOrderBy(null);

            queryBlock.getSelectList().add(new SQLSelectItem(aggregateExpr, "ROWNUM"));

            DB2SelectQueryBlock countQueryBlock = new DB2SelectQueryBlock();
            countQueryBlock.getSelectList().add(new SQLSelectItem(new SQLAllColumnExpr()));

            countQueryBlock.setFrom(new SQLSubqueryTableSource(select, "XX"));

            countQueryBlock.setWhere(pageCondition);

            return SQLUtils.toSQLString(countQueryBlock, dbType);
        }

        DB2SelectQueryBlock countQueryBlock = new DB2SelectQueryBlock();
        countQueryBlock.getSelectList().add(new SQLSelectItem(new SQLPropertyExpr(new SQLIdentifierExpr("XX"), "*")));
        SQLAggregateExpr aggregateExpr = new SQLAggregateExpr("ROW_NUMBER");
        SQLOrderBy orderBy = select.getOrderBy();
        aggregateExpr.setOver(new SQLOver(orderBy));
        select.setOrderBy(null);
        countQueryBlock.getSelectList().add(new SQLSelectItem(aggregateExpr, "ROWNUM"));

        countQueryBlock.setFrom(new SQLSubqueryTableSource(select, "XX"));

        if (offset <= 0) {
            return SQLUtils.toSQLString(countQueryBlock, dbType);
        }

        DB2SelectQueryBlock offsetQueryBlock = new DB2SelectQueryBlock();
        offsetQueryBlock.getSelectList().add(new SQLSelectItem(new SQLAllColumnExpr()));
        offsetQueryBlock.setFrom(new SQLSubqueryTableSource(new SQLSelect(countQueryBlock), "XXX"));
        offsetQueryBlock.setWhere(pageCondition);

        return SQLUtils.toSQLString(offsetQueryBlock, dbType);
    }
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        if (JdbcConstants.SQL_SERVER.equals(dbType) || JdbcUtils.JTDS.equals(dbType)) {
            return new SQLServerSelectQueryBlock();
        }

        if (JdbcConstants.DB2.equals(dbType)) {
            return new DB2SelectQueryBlock();
        }

        return new SQLSelectQueryBlock();
    }
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                                                   SQLBinaryOperator.LessThanOrEqual, //
                                                   new SQLNumberExpr(count + offset));
        SQLBinaryOpExpr pageCondition = new SQLBinaryOpExpr(gt, SQLBinaryOperator.BooleanAnd, lteq);

        if (query instanceof SQLSelectQueryBlock) {
            DB2SelectQueryBlock queryBlock = (DB2SelectQueryBlock) query;
            if (offset <= 0) {
                queryBlock.setFirst(new SQLNumberExpr(count));
                return SQLUtils.toSQLString(select, dbType);
            }

            SQLAggregateExpr aggregateExpr = new SQLAggregateExpr("ROW_NUMBER");
            SQLOrderBy orderBy = select.getOrderBy();
            aggregateExpr.setOver(new SQLOver(orderBy));
            select.setOrderBy(null);

            queryBlock.getSelectList().add(new SQLSelectItem(aggregateExpr, "ROWNUM"));

            DB2SelectQueryBlock countQueryBlock = new DB2SelectQueryBlock();
            countQueryBlock.getSelectList().add(new SQLSelectItem(new SQLAllColumnExpr()));

            countQueryBlock.setFrom(new SQLSubqueryTableSource(select, "XX"));

            countQueryBlock.setWhere(pageCondition);

            return SQLUtils.toSQLString(countQueryBlock, dbType);
        }

        DB2SelectQueryBlock countQueryBlock = new DB2SelectQueryBlock();
        countQueryBlock.getSelectList().add(new SQLSelectItem(new SQLPropertyExpr(new SQLIdentifierExpr("XX"), "*")));
        SQLAggregateExpr aggregateExpr = new SQLAggregateExpr("ROW_NUMBER");
        SQLOrderBy orderBy = select.getOrderBy();
        aggregateExpr.setOver(new SQLOver(orderBy));
        select.setOrderBy(null);
        countQueryBlock.getSelectList().add(new SQLSelectItem(aggregateExpr, "ROWNUM"));

        countQueryBlock.setFrom(new SQLSubqueryTableSource(select, "XX"));

        if (offset <= 0) {
            return SQLUtils.toSQLString(countQueryBlock, dbType);
        }

        DB2SelectQueryBlock offsetQueryBlock = new DB2SelectQueryBlock();
        offsetQueryBlock.getSelectList().add(new SQLSelectItem(new SQLAllColumnExpr()));
        offsetQueryBlock.setFrom(new SQLSubqueryTableSource(new SQLSelect(countQueryBlock), "XXX"));
        offsetQueryBlock.setWhere(pageCondition);

        return SQLUtils.toSQLString(offsetQueryBlock, dbType);
    }
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        if (JdbcConstants.SQL_SERVER.equals(dbType) || JdbcUtils.JTDS.equals(dbType)) {
            return new SQLServerSelectQueryBlock();
        }

        if (JdbcConstants.DB2.equals(dbType)) {
            return new DB2SelectQueryBlock();
        }

        return new SQLSelectQueryBlock();
    }
View Full Code Here
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        if (lexer.token() == Token.COMMENT) {
            lexer.nextToken();
        }

        DB2SelectQueryBlock queryBlock = new DB2SelectQueryBlock();

        if (lexer.token() == Token.DISTINCT) {
            queryBlock.setDistionOption(SQLSetQuantifier.DISTINCT);
            lexer.nextToken();
        } else if (lexer.token() == Token.UNIQUE) {
            queryBlock.setDistionOption(SQLSetQuantifier.UNIQUE);
            lexer.nextToken();
        } else if (lexer.token() == Token.ALL) {
            queryBlock.setDistionOption(SQLSetQuantifier.ALL);
            lexer.nextToken();
        }

        parseSelectList(queryBlock);

        parseFrom(queryBlock);

        parseWhere(queryBlock);

        parseGroupBy(queryBlock);
       
        if (lexer.token() == Token.FETCH) {
            lexer.nextToken();
            accept(Token.FIRST);
            SQLExpr first = this.exprParser.primary();
            queryBlock.setFirst(first);
            if (identifierEquals("ROW") || identifierEquals("ROWS")) {
                lexer.nextToken();
            }
            accept(Token.ONLY);
        }
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        if (lexer.token() == Token.COMMENT) {
            lexer.nextToken();
        }

        DB2SelectQueryBlock queryBlock = new DB2SelectQueryBlock();

        if (lexer.token() == Token.DISTINCT) {
            queryBlock.setDistionOption(SQLSetQuantifier.DISTINCT);
            lexer.nextToken();
        } else if (lexer.token() == Token.UNIQUE) {
            queryBlock.setDistionOption(SQLSetQuantifier.UNIQUE);
            lexer.nextToken();
        } else if (lexer.token() == Token.ALL) {
            queryBlock.setDistionOption(SQLSetQuantifier.ALL);
            lexer.nextToken();
        }

        parseSelectList(queryBlock);

        parseFrom(queryBlock);

        parseWhere(queryBlock);

        parseGroupBy(queryBlock);


        for (;;) {
            if (lexer.token() == Token.FETCH) {
                lexer.nextToken();
                accept(Token.FIRST);
                SQLExpr first = this.exprParser.primary();
                queryBlock.setFirst(first);
                if (identifierEquals("ROW") || identifierEquals("ROWS")) {
                    lexer.nextToken();
                }
                accept(Token.ONLY);
                continue;
            }
           
            if (lexer.token() == Token.WITH) {
                lexer.nextToken();
                if (identifierEquals("RR")) {
                    queryBlock.setIsolation(Isolation.RR);
                } else if (identifierEquals("RS")) {
                    queryBlock.setIsolation(Isolation.RS);
                } else if (identifierEquals("CS")) {
                    queryBlock.setIsolation(Isolation.CS);
                } else if (identifierEquals("UR")) {
                    queryBlock.setIsolation(Isolation.UR);
                } else {
                    throw new ParserException("TODO");
                }
                lexer.nextToken();
                continue;
            }
           
            if (lexer.token() == Token.FOR) {
                lexer.nextToken();
                acceptIdentifier("READ");
                accept(Token.ONLY);
                queryBlock.setForReadOnly(true);
            }
           
            if (lexer.token() == Token.OPTIMIZE) {
                lexer.nextToken();
                accept(Token.FOR);
               
                queryBlock.setOptimizeFor(this.expr());
                if (identifierEquals("ROW")) {
                    lexer.nextToken();
                } else {
                    acceptIdentifier("ROWS");
                }
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                                                   SQLBinaryOperator.LessThanOrEqual, //
                                                   new SQLNumberExpr(count + offset));
        SQLBinaryOpExpr pageCondition = new SQLBinaryOpExpr(gt, SQLBinaryOperator.BooleanAnd, lteq);

        if (query instanceof SQLSelectQueryBlock) {
            DB2SelectQueryBlock queryBlock = (DB2SelectQueryBlock) query;
            if (offset <= 0) {
                queryBlock.setFirst(new SQLNumberExpr(count));
                return SQLUtils.toSQLString(select, dbType);
            }

            SQLAggregateExpr aggregateExpr = new SQLAggregateExpr("ROW_NUMBER");
            SQLOrderBy orderBy = select.getOrderBy();
            aggregateExpr.setOver(new SQLOver(orderBy));
            select.setOrderBy(null);

            queryBlock.getSelectList().add(new SQLSelectItem(aggregateExpr, "ROWNUM"));

            DB2SelectQueryBlock countQueryBlock = new DB2SelectQueryBlock();
            countQueryBlock.getSelectList().add(new SQLSelectItem(new SQLAllColumnExpr()));

            countQueryBlock.setFrom(new SQLSubqueryTableSource(select, "XX"));

            countQueryBlock.setWhere(pageCondition);

            return SQLUtils.toSQLString(countQueryBlock, dbType);
        }

        DB2SelectQueryBlock countQueryBlock = new DB2SelectQueryBlock();
        countQueryBlock.getSelectList().add(new SQLSelectItem(new SQLPropertyExpr(new SQLIdentifierExpr("XX"), "*")));
        SQLAggregateExpr aggregateExpr = new SQLAggregateExpr("ROW_NUMBER");
        SQLOrderBy orderBy = select.getOrderBy();
        aggregateExpr.setOver(new SQLOver(orderBy));
        select.setOrderBy(null);
        countQueryBlock.getSelectList().add(new SQLSelectItem(aggregateExpr, "ROWNUM"));

        countQueryBlock.setFrom(new SQLSubqueryTableSource(select, "XX"));

        if (offset <= 0) {
            return SQLUtils.toSQLString(countQueryBlock, dbType);
        }

        DB2SelectQueryBlock offsetQueryBlock = new DB2SelectQueryBlock();
        offsetQueryBlock.getSelectList().add(new SQLSelectItem(new SQLAllColumnExpr()));
        offsetQueryBlock.setFrom(new SQLSubqueryTableSource(new SQLSelect(countQueryBlock), "XXX"));
        offsetQueryBlock.setWhere(pageCondition);

        return SQLUtils.toSQLString(offsetQueryBlock, dbType);
    }
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        if (JdbcConstants.SQL_SERVER.equals(dbType) || JdbcUtils.JTDS.equals(dbType)) {
            return new SQLServerSelectQueryBlock();
        }

        if (JdbcConstants.DB2.equals(dbType)) {
            return new DB2SelectQueryBlock();
        }

        return new SQLSelectQueryBlock();
    }
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    }
   
    public boolean parseStatementListDialect(List<SQLStatement> statementList) {
        if (lexer.token() == Token.VALUES) {
            lexer.nextToken();
            DB2ValuesStatement stmt = new DB2ValuesStatement();
            stmt.setExpr(this.exprParser.expr());
            statementList.add(stmt);
            return true;
        }
       
        return false;
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        if (JdbcUtils.SQL_SERVER.equals(dbType) || JdbcUtils.JTDS.equals(dbType)) {
            return new SQLServerExprParser(sql);
        }
       
        if (JdbcUtils.DB2.equals(dbType)) {
            return new DB2ExprParser(sql);
        }
       
        if (JdbcUtils.ODPS.equals(dbType)) {
            return new OdpsExprParser(sql);
        }
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Related Classes of com.alibaba.druid.sql.dialect.db2.visitor.DB2EvalVisitor

  • com.alibaba.druid.bvt.sql.db2.DB2SelectTest_0
  • com.alibaba.druid.bvt.sql.db2.DB2SelectTest_1
  • com.alibaba.druid.bvt.sql.db2.DB2SelectTest_2
  • com.alibaba.druid.bvt.sql.db2.DB2SelectTest_3
  • com.alibaba.druid.bvt.sql.db2.DB2SelectTest_4
  • com.alibaba.druid.bvt.sql.db2.DB2SelectTest_5
  • com.alibaba.druid.bvt.sql.db2.DB2Values_Test
  • com.alibaba.druid.sql.ast.SQLExpr
  • com.alibaba.druid.sql.ast.statement.SQLSelectQuery
  • com.alibaba.druid.sql.DB2Test
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