Package org.apache.phoenix.parse

Examples of org.apache.phoenix.parse.LimitNode

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    private LimitCompiler() {
    }

    public static Integer compile(StatementContext context, FilterableStatement statement) throws SQLException {
        LimitNode limitNode = statement.getLimit();
        if (limitNode == null) {
            return null;
        }
        LimitParseNodeVisitor visitor = new LimitParseNodeVisitor(context);
        limitNode.getLimitParseNode().accept(visitor);
        return visitor.getLimit();
    }
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        ParseNode whereRewrite = subselect.getWhere();
        List<ParseNode> groupByRewrite = subselect.getGroupBy();
        ParseNode havingRewrite = subselect.getHaving();
        List<OrderByNode> orderByRewrite = subselect.getOrderBy();
        LimitNode limitRewrite = subselect.getLimit();
        HintNode hintRewrite = subselect.getHint();
        boolean isDistinctRewrite = subselect.isDistinct();
        boolean isAggregateRewrite = subselect.isAggregate();
       
        ParseNode where = select.getWhere();
        if (where != null) {
            if (subselect.getLimit() != null || (subselect.isAggregate() && subselect.getGroupBy().isEmpty())) {
                return select;
            }
            ParseNode postFilter = where.accept(this);
            if (subselect.getGroupBy().isEmpty()) {
                whereRewrite = whereRewrite == null ? postFilter : NODE_FACTORY.and(Arrays.<ParseNode>asList(whereRewrite, postFilter));
            } else {
                havingRewrite = havingRewrite == null ? postFilter : NODE_FACTORY.and(Arrays.<ParseNode>asList(havingRewrite, postFilter));
            }
        }
       
        List<ParseNode> groupBy = select.getGroupBy();
        if (!groupBy.isEmpty()) {
            if (subselect.getLimit() != null || subselect.isAggregate() || subselect.isDistinct()) {
                return select;
            }
            groupByRewrite = Lists.<ParseNode>newArrayListWithExpectedSize(groupBy.size());
            for (ParseNode node : groupBy) {
                groupByRewrite.add(node.accept(this));
            }
            if (select.getHaving() != null) {
                havingRewrite = select.getHaving().accept(this);
            }
        }
       
        List<AliasedNode> selectNodes = select.getSelect();
        List<AliasedNode> selectNodesRewrite = Lists.newArrayListWithExpectedSize(selectNodes.size());
        for (AliasedNode aliasedNode : selectNodes) {
            ParseNode node = aliasedNode.getNode();
            if (node instanceof WildcardParseNode
                    || (node instanceof TableWildcardParseNode
                            && ((TableWildcardParseNode) node).getTableName().equals(tableAlias))) {
                for (AliasedNode aNode : subselect.getSelect()) {
                    String alias = aNode.getAlias();
                    String aliasRewrite = alias == null ? null : SchemaUtil.getColumnName(tableAlias, alias);
                    selectNodesRewrite.add(NODE_FACTORY.aliasedNode(aliasRewrite, aNode.getNode()));
                }               
            } else {
                selectNodesRewrite.add(NODE_FACTORY.aliasedNode(aliasedNode.getAlias(), node.accept(this)));
            }
        }
       
        List<OrderByNode> orderBy = select.getOrderBy();
        if (!orderBy.isEmpty()) {
            if (subselect.getLimit() != null) {
                return select;
            }
            orderByRewrite = Lists.newArrayListWithExpectedSize(orderBy.size());
            for (OrderByNode orderByNode : orderBy) {
                ParseNode node = orderByNode.getNode();
                orderByRewrite.add(NODE_FACTORY.orderBy(node.accept(this), orderByNode.isNullsLast(), orderByNode.isAscending()));
            }
        }
       
        LimitNode limit = select.getLimit();
        if (limit != null) {
            if (limitRewrite == null) {
                limitRewrite = limit;
            } else {
                Integer limitValue = LimitCompiler.compile(null, select);
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    private LimitCompiler() {
    }

    public static Integer compile(StatementContext context, FilterableStatement statement) throws SQLException {
        LimitNode limitNode = statement.getLimit();
        if (limitNode == null) {
            return null;
        }
        LimitParseNodeVisitor visitor = new LimitParseNodeVisitor(context);
        limitNode.getLimitParseNode().accept(visitor);
        return visitor.getLimit();
    }
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Related Classes of org.apache.phoenix.parse.LimitNode

  • org.apache.phoenix.compile.LimitCompiler
  • org.apache.phoenix.compile.SubselectRewriter
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