Package org.apache.phoenix.expression

Examples of org.apache.phoenix.expression.OrderByExpression

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            this.services = services;
        }
        @Override
        public PeekingResultIterator newIterator(StatementContext context, ResultIterator scanner, Scan scan) throws SQLException {
            Expression expression = RowKeyExpression.INSTANCE;
            OrderByExpression orderByExpression = new OrderByExpression(expression, false, true);
            int threshold = services.getProps().getInt(QueryServices.SPOOL_THRESHOLD_BYTES_ATTRIB, QueryServicesOptions.DEFAULT_SPOOL_THRESHOLD_BYTES);
            return new OrderedResultIterator(scanner, Collections.<OrderByExpression>singletonList(orderByExpression), threshold);
        }
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            int limit = WritableUtils.readVInt(input);
            int estimatedRowSize = WritableUtils.readVInt(input);
            int size = WritableUtils.readVInt(input);
            List<OrderByExpression> orderByExpressions = Lists.newArrayListWithExpectedSize(size);          
            for (int i = 0; i < size; i++) {
                OrderByExpression orderByExpression = new OrderByExpression();
                orderByExpression.readFields(input);
                orderByExpressions.add(orderByExpression);
            }
            ResultIterator inner = new RegionScannerResultIterator(s);
            return new OrderedResultIterator(inner, orderByExpressions, thresholdBytes, limit >= 0 ? limit : null, estimatedRowSize);
        } catch (IOException e) {
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                    }
                }
                if (expression.getSortOrder() == SortOrder.DESC) {
                    isAscending = !isAscending;
                }
                OrderByExpression orderByExpression = new OrderByExpression(expression, node.isNullsLast(), isAscending);
                orderByExpressions.add(orderByExpression);
            }
            visitor.reset();
        }
      
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    }

    @Override
    protected int compare(Tuple t1, Tuple t2) {
        for (int i = 0; i < orderByColumns.size(); i++) {
            OrderByExpression order = orderByColumns.get(i);
            Expression orderExpr = order.getExpression();
            boolean isNull1 = !orderExpr.evaluate(t1, ptr1) || ptr1.getLength() == 0;
            boolean isNull2 = !orderExpr.evaluate(t2, ptr2) || ptr2.getLength() == 0;
            if (isNull1 && isNull2) {
                continue;
            } else if (isNull1) {
                return order.isNullsLast() ? 1 : -1;
            } else if (isNull2) {
                return order.isNullsLast() ? -1 : 1;
            }
            int cmp = ptr1.compareTo(ptr2);
            if (cmp == 0) {
                continue;
            }
            return order.isAscending() ? cmp : -cmp;
        }
        return 0;
    }
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            this.services = services;
        }
        @Override
        public PeekingResultIterator newIterator(ResultIterator scanner) throws SQLException {
            Expression expression = RowKeyExpression.INSTANCE;
            OrderByExpression orderByExpression = new OrderByExpression(expression, false, true);
            int threshold = services.getProps().getInt(QueryServices.SPOOL_THRESHOLD_BYTES_ATTRIB, QueryServicesOptions.DEFAULT_SPOOL_THRESHOLD_BYTES);
            return new OrderedResultIterator(scanner, Collections.<OrderByExpression>singletonList(orderByExpression), threshold);
        }
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                    }
                }
                if (expression.getColumnModifier() == ColumnModifier.SORT_DESC) {
                    isAscending = !isAscending;
                }
                OrderByExpression orderByExpression = new OrderByExpression(expression, node.isNullsLast(), isAscending);
                orderByExpressions.add(orderByExpression);
            }
            visitor.reset();
        }
      
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            int limit = WritableUtils.readVInt(input);
            int estimatedRowSize = WritableUtils.readVInt(input);
            int size = WritableUtils.readVInt(input);
            List<OrderByExpression> orderByExpressions = Lists.newArrayListWithExpectedSize(size);          
            for (int i = 0; i < size; i++) {
                OrderByExpression orderByExpression = new OrderByExpression();
                orderByExpression.readFields(input);
                orderByExpressions.add(orderByExpression);
            }
            ResultIterator inner = new RegionScannerResultIterator(s);
            return new OrderedResultIterator(inner, orderByExpressions, thresholdBytes, limit >= 0 ? limit : null, estimatedRowSize);
        } catch (IOException e) {
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    }

    @Override
    protected int compare(Tuple t1, Tuple t2) {
        for (int i = 0; i < orderByColumns.size(); i++) {
            OrderByExpression order = orderByColumns.get(i);
            Expression orderExpr = order.getExpression();
            boolean isNull1 = !orderExpr.evaluate(t1, ptr1) || ptr1.getLength() == 0;
            boolean isNull2 = !orderExpr.evaluate(t2, ptr2) || ptr2.getLength() == 0;
            if (isNull1 && isNull2) {
                continue;
            } else if (isNull1) {
                return order.isNullsLast() ? 1 : -1;
            } else if (isNull2) {
                return order.isNullsLast() ? -1 : 1;
            }
            int cmp = ptr1.compareTo(ptr2);
            if (cmp == 0) {
                continue;
            }
            return order.isAscending() ? cmp : -cmp;
        }
        return 0;
    }
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            int limit = WritableUtils.readVInt(input);
            int estimatedRowSize = WritableUtils.readVInt(input);
            int size = WritableUtils.readVInt(input);
            List<OrderByExpression> orderByExpressions = Lists.newArrayListWithExpectedSize(size);          
            for (int i = 0; i < size; i++) {
                OrderByExpression orderByExpression = new OrderByExpression();
                orderByExpression.readFields(input);
                orderByExpressions.add(orderByExpression);
            }
            ResultIterator inner = new RegionScannerResultIterator(s);
            return new OrderedResultIterator(inner, orderByExpressions, thresholdBytes, limit >= 0 ? limit : null, estimatedRowSize);
        } catch (IOException e) {
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                    }
                }
                if (expression.getSortOrder() == SortOrder.DESC) {
                    isAscending = !isAscending;
                }
                OrderByExpression orderByExpression = new OrderByExpression(expression, node.isNullsLast(), isAscending);
                orderByExpressions.add(orderByExpression);
            }
            visitor.reset();
        }
      
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Related Classes of org.apache.phoenix.expression.OrderByExpression

  • org.apache.phoenix.compile.OrderByCompiler
  • org.apache.phoenix.coprocessor.ScanRegionObserver
  • org.apache.phoenix.execute.AggregatePlan$OrderingResultIteratorFactory
  • org.apache.phoenix.iterate.MergeSortTopNResultIterator
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