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Java TableNode.setKeyFilter方法代碼示例

本文整理匯總了Java中com.taobao.tddl.optimizer.core.ast.query.TableNode.setKeyFilter方法的典型用法代碼示例。如果您正苦於以下問題:Java TableNode.setKeyFilter方法的具體用法?Java TableNode.setKeyFilter怎麽用?Java TableNode.setKeyFilter使用的例子?那麽, 這裏精選的方法代碼示例或許可以為您提供幫助。您也可以進一步了解該方法所在com.taobao.tddl.optimizer.core.ast.query.TableNode的用法示例。


在下文中一共展示了TableNode.setKeyFilter方法的7個代碼示例,這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚,您的評價將有助於係統推薦出更棒的Java代碼示例。

示例1: build

import com.taobao.tddl.optimizer.core.ast.query.TableNode; //導入方法依賴的package包/類
private void build(TableNode table) {
    table.build();

    Map<String, Object> extraCmd = new HashMap<String, Object>();
    extraCmd.put(ConnectionProperties.CHOOSE_INDEX, true);
    IndexMeta index = IndexChooser.findBestIndex(table.getTableMeta(),
        new ArrayList<ISelectable>(),
        FilterUtils.toDNFNode(table.getWhereFilter()),
        table.getTableName(),
        extraCmd);

    table.useIndex(index);

    Map<FilterType, IFilter> result = FilterSpliter.splitByIndex(FilterUtils.toDNFNode(table.getWhereFilter()),
        table);

    table.setKeyFilter(result.get(FilterType.IndexQueryKeyFilter));
    table.setIndexQueryValueFilter(result.get(FilterType.IndexQueryValueFilter));
    table.setResultFilter(result.get(FilterType.ResultFilter));
}
 
開發者ID:loye168,項目名稱:tddl5,代碼行數:21,代碼來源:JoinChooserTest.java

示例2: build

import com.taobao.tddl.optimizer.core.ast.query.TableNode; //導入方法依賴的package包/類
private void build(TableNode table) {
    table.build();

    Map<String, Object> extraCmd = new HashMap<String, Object>();
    extraCmd.put(ExtraCmd.CHOOSE_INDEX, true);
    IndexMeta index = IndexChooser.findBestIndex(table.getTableMeta(),
        new ArrayList<ISelectable>(),
        FilterUtils.toDNFNode(table.getWhereFilter()),
        table.getTableName(),
        extraCmd);

    table.useIndex(index);

    Map<FilterType, IFilter> result = FilterSpliter.splitByIndex(FilterUtils.toDNFNode(table.getWhereFilter()),
        table);

    table.setKeyFilter(result.get(FilterType.IndexQueryKeyFilter));
    table.setIndexQueryValueFilter(result.get(FilterType.IndexQueryValueFilter));
    table.setResultFilter(result.get(FilterType.ResultFilter));
}
 
開發者ID:beebeandwer,項目名稱:TDDL,代碼行數:21,代碼來源:JoinChooserTest.java

示例3: buildTableFilter

import com.taobao.tddl.optimizer.core.ast.query.TableNode; //導入方法依賴的package包/類
private static void buildTableFilter(TableNode tableNode) {
    List<List<IFilter>> DNFNodes = FilterUtils.toDNFNodesArray(tableNode.getWhereFilter());
    if (DNFNodes.size() == 1) {
        // 即使索引沒有選擇主鍵,但是有的filter依舊會在s主鍵上進行,作為valueFilter,所以要把主鍵也傳進去
        Map<FilterType, IFilter> filters = FilterSpliter.splitByIndex(DNFNodes.get(0), tableNode);
        tableNode.setKeyFilter(filters.get(FilterType.IndexQueryKeyFilter));
        tableNode.setResultFilter(filters.get(FilterType.ResultFilter));
        tableNode.setIndexQueryValueFilter(filters.get(FilterType.IndexQueryValueFilter));
        tableNode.query((IFilter) null);// 清空where
    } else {
        // 如果存在多個合取方式的的or組合時,無法區分出key/indexValue/result,直接下推
        tableNode.setResultFilter(tableNode.getWhereFilter());
        tableNode.query((IFilter) null);// 清空where
    }
}
 
開發者ID:loye168,項目名稱:tddl5,代碼行數:16,代碼來源:JoinChooser.java

示例4: buildTableFilter

import com.taobao.tddl.optimizer.core.ast.query.TableNode; //導入方法依賴的package包/類
private static void buildTableFilter(TableNode tableNode) {
    List<List<IFilter>> DNFNodes = FilterUtils.toDNFNodesArray(tableNode.getWhereFilter());
    if (DNFNodes.size() == 1) {
        // 即使索引沒有選擇主鍵,但是有的filter依舊會在s主鍵上進行,作為valueFilter,所以要把主鍵也傳進去
        Map<FilterType, IFilter> filters = FilterSpliter.splitByIndex(DNFNodes.get(0), tableNode);
        tableNode.setKeyFilter(filters.get(FilterType.IndexQueryKeyFilter));
        tableNode.setResultFilter(filters.get(FilterType.ResultFilter));
        tableNode.setIndexQueryValueFilter(filters.get(FilterType.IndexQueryValueFilter));
    } else {
        // 如果存在多個合取方式的的or組合時,無法區分出key/indexValue/result,直接下推
        tableNode.setResultFilter(tableNode.getWhereFilter());
    }
}
 
開發者ID:beebeandwer,項目名稱:TDDL,代碼行數:14,代碼來源:JoinChooser.java

示例5: splitByDNF

import com.taobao.tddl.optimizer.core.ast.query.TableNode; //導入方法依賴的package包/類
/**
 * 根據where中的所有條件按照or進行分隔,生成多個query請求. (主要考慮部分存儲引擎不支持or語法)
 */
public static List<QueryTreeNode> splitByDNF(TableNode node, Map<String, Object> extraCmd) {
    if (node.getWhereFilter() == null) {
        return new LinkedList<QueryTreeNode>();
    }

    if (!FilterUtils.isDNF(node.getWhereFilter())) {
        throw new IllegalArgumentException("not dnf!!! fuck!!\n" + node.getWhereFilter());
    }

    List<QueryTreeNode> subQueries = new LinkedList<QueryTreeNode>();
    List<List<IFilter>> DNFNodes = FilterUtils.toDNFNodesArray(node.getWhereFilter());
    // 判斷是否要處理OR轉化為index merge,比如mysql可以push
    // 比如hbase/bdb這一類,OR條件目前隻能是主鍵索引,由執行器層麵去解決
    // 如果涉及多字段時就需要拆分為index merge,同時做uniq
    boolean needCopy = (DNFNodes.size() > 1);
    if (isOptimizeIndexMerge(extraCmd) || DNFNodes.size() == 1) {
        for (List<IFilter> DNFNode : DNFNodes) {
            List columns = Arrays.asList(FilterUtils.toColumnFiltersMap(DNFNode).keySet().toArray());
            String tablename = node.getTableName();
            IndexMeta index = IndexChooser.findBestIndex(node.getTableMeta(), columns, DNFNode, tablename, extraCmd);
            if (index == null) {
                index = node.getTableMeta().getPrimaryIndex();
            }
            // 如果找不到對應條件的主鍵,可能需要全表掃描
            TableNode subQuery = node;
            if (needCopy) {
                subQuery = node.deepCopy();
            }

            subQuery.useIndex(index);
            if (index == null) {// 如果無主鍵進行全表掃描
                subQuery.setFullTableScan(true);
            } else {
                subQuery.query((IFilter) null);// 清空where
            }

            Map<FilterType, IFilter> filters = splitByIndex(DNFNode, subQuery);
            subQuery.setKeyFilter(filters.get(FilterType.IndexQueryKeyFilter));
            subQuery.setIndexQueryValueFilter(filters.get(FilterType.IndexQueryValueFilter));
            subQuery.setResultFilter(filters.get(FilterType.ResultFilter));
            subQueries.add(subQuery);
        }
    } else {
        node.useIndex(node.getTableMeta().getPrimaryIndex());// 默認選中主鍵
        node.setResultFilter(node.getWhereFilter());
    }

    return subQueries;
}
 
開發者ID:loye168,項目名稱:tddl5,代碼行數:53,代碼來源:FilterSpliter.java

示例6: buildMergeTableInOneDB

import com.taobao.tddl.optimizer.core.ast.query.TableNode; //導入方法依賴的package包/類
/**
 * 構建單庫的執行節點
 */
private static OneDbNodeWithCount buildMergeTableInOneDB(TableNode table, TargetDB targetDB, boolean needCopy) {
    long totalRowCount = 0;
    OneDbNodeWithCount oneDbNodeWithCount = new OneDbNodeWithCount();
    Map<String, Field> tabMap = targetDB.getTableNameMap();
    for (String targetTable : tabMap.keySet()) {
        TableNode node = null;
        if (needCopy) {
            node = table.copy();
        } else {
            node = table;
        }

        // tddl的traceSource在分庫不分表,和全表掃描時無法使用 mengshi
        if (tabMap.get(targetTable) != null && tabMap.get(targetTable).getSourceKeys() != null) {
            if (node.getKeyFilter() != null) {
                IFilter keyFilterAfterTraceSource = (IFilter) node.getKeyFilter().copy();
                traceSourceInFilter(keyFilterAfterTraceSource, tabMap.get(targetTable).getSourceKeys());
                node.setKeyFilter(keyFilterAfterTraceSource);
            }

            if (node.getResultFilter() != null) {
                IFilter valueFilterAfterTraceSource = (IFilter) node.getResultFilter().copy();
                traceSourceInFilter(valueFilterAfterTraceSource, tabMap.get(targetTable).getSourceKeys());
                node.setResultFilter(valueFilterAfterTraceSource);
            }
        }

        node.setActualTableName(targetTable);
        node.executeOn(targetDB.getDbIndex());
        node.setExtra(getIdentifierExtra((KVIndexNode) node));// 設置標誌
        // 暫時先用邏輯表名,以後可能是索引名
        String indexName = null;
        if (node instanceof KVIndexNode) {
            indexName = ((KVIndexNode) node).getKvIndexName();
        } else {
            indexName = node.getTableMeta().getPrimaryIndex().getName();
        }
        node.setBroadcast(OptimizerContext.getContext().getRule().isBroadCast(indexName));

        totalRowCount += CostEsitimaterFactory.estimate(node).getRowCount();
        oneDbNodeWithCount.subs.add(node);
    }

    oneDbNodeWithCount.totalRowCount = totalRowCount;
    return oneDbNodeWithCount;
}
 
開發者ID:beebeandwer,項目名稱:TDDL,代碼行數:50,代碼來源:DataNodeChooser.java

示例7: splitByDNF

import com.taobao.tddl.optimizer.core.ast.query.TableNode; //導入方法依賴的package包/類
/**
 * 根據where中的所有條件按照or進行分隔,生成多個query請求. (主要考慮部分存儲引擎不支持or語法)
 */
public static List<QueryTreeNode> splitByDNF(TableNode node, Map<String, Object> extraCmd) throws QueryException {
    if (node.getWhereFilter() == null) {
        return new LinkedList<QueryTreeNode>();
    }

    if (!FilterUtils.isDNF(node.getWhereFilter())) {
        throw new IllegalArgumentException("not dnf!!! fuck!!\n" + node.getWhereFilter());
    }

    List<QueryTreeNode> subQueries = new LinkedList<QueryTreeNode>();
    List<List<IFilter>> DNFNodes = FilterUtils.toDNFNodesArray(node.getWhereFilter());
    // 判斷是否要處理OR轉化為index merge,比如mysql可以push
    // 比如hbase/bdb這一類,OR條件目前隻能是主鍵索引,由執行器層麵去解決
    // 如果涉及多字段時就需要拆分為index merge,同時做uniq
    boolean needCopy = (DNFNodes.size() > 1);
    if (isOptimizeIndexMerge(extraCmd) || DNFNodes.size() == 1) {
        for (List<IFilter> DNFNode : DNFNodes) {
            List columns = Arrays.asList(FilterUtils.toColumnFiltersMap(DNFNode).keySet().toArray());
            String tablename = node.getTableName();
            IndexMeta index = IndexChooser.findBestIndex(node.getTableMeta(), columns, DNFNode, tablename, extraCmd);
            if (index == null) {
                index = node.getTableMeta().getPrimaryIndex();
            }
            // 如果找不到對應條件的主鍵,可能需要全表掃描
            TableNode subQuery = node;
            if (needCopy) {
                subQuery = node.deepCopy();
            }

            subQuery.useIndex(index);
            if (index == null) {// 如果無主鍵進行全表掃描
                subQuery.setFullTableScan(true);
            }

            Map<FilterType, IFilter> filters = splitByIndex(DNFNode, subQuery);
            subQuery.setKeyFilter(filters.get(FilterType.IndexQueryKeyFilter));
            subQuery.setIndexQueryValueFilter(filters.get(FilterType.IndexQueryValueFilter));
            subQuery.setResultFilter(filters.get(FilterType.ResultFilter));
            subQueries.add(subQuery);
        }
    } else {
        node.useIndex(node.getTableMeta().getPrimaryIndex());// 默認選中主鍵
        node.setResultFilter(node.getWhereFilter());
    }

    return subQueries;
}
 
開發者ID:beebeandwer,項目名稱:TDDL,代碼行數:51,代碼來源:FilterSpliter.java


注:本文中的com.taobao.tddl.optimizer.core.ast.query.TableNode.setKeyFilter方法示例由純淨天空整理自Github/MSDocs等開源代碼及文檔管理平台,相關代碼片段篩選自各路編程大神貢獻的開源項目,源碼版權歸原作者所有,傳播和使用請參考對應項目的License;未經允許,請勿轉載。