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Java FilterUtils.toDNFNodesArray方法代码示例

本文整理汇总了Java中com.taobao.tddl.optimizer.utils.FilterUtils.toDNFNodesArray方法的典型用法代码示例。如果您正苦于以下问题:Java FilterUtils.toDNFNodesArray方法的具体用法?Java FilterUtils.toDNFNodesArray怎么用?Java FilterUtils.toDNFNodesArray使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在com.taobao.tddl.optimizer.utils.FilterUtils的用法示例。


在下文中一共展示了FilterUtils.toDNFNodesArray方法的10个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: removeDupFilter

import com.taobao.tddl.optimizer.utils.FilterUtils; //导入方法依赖的package包/类
/**
 * 合并两个条件去除重复的key条件,比如构造了id in (xxx)的请求后,原先条件中有可能也存在id的条件,这时需要替换原先的id条件
 * 
 * @param srcFilter
 * @param mergeFilter
 */
private IFilter removeDupFilter(IFilter srcFilter, IBooleanFilter inFilter) {
    List<List<IFilter>> filters = FilterUtils.toDNFNodesArray(srcFilter);
    List<List<IFilter>> newFilters = new ArrayList<List<IFilter>>();
    for (List<IFilter> sf : filters) {
        List<IFilter> newSf = new ArrayList<IFilter>();
        for (IFilter f : sf) {
            Object column = FilterUtils.getFilterColumn(f);
            if (!column.equals(inFilter.getColumn())) {
                newSf.add(f);
            }
        }

        newFilters.add(newSf);
    }

    return FilterUtils.DNFToOrLogicTree(newFilters);
}
 
开发者ID:loye168,项目名称:tddl5,代码行数:24,代码来源:MergeCursor.java

示例2: removeDupFilter

import com.taobao.tddl.optimizer.utils.FilterUtils; //导入方法依赖的package包/类
/**
 * 合并两个条件去除重复的key条件,比如构造了id in (xxx)的请求后,原先条件中有可能也存在id的条件,这时需要替换原先的id条件
 * 
 * @param srcFilter
 * @param mergeFilter
 */
private IFilter removeDupFilter(IFilter srcFilter, IBooleanFilter inFilter) {
    List<List<IFilter>> filters = FilterUtils.toDNFNodesArray(srcFilter);
    List<List<IFilter>> newFilters = new ArrayList<List<IFilter>>();
    for (List<IFilter> sf : filters) {
        List<IFilter> newSf = new ArrayList<IFilter>();
        for (IFilter f : sf) {
            if (!((IBooleanFilter) f).getColumn().equals(inFilter.getColumn())) {
                newSf.add(f);
            }
        }

        newFilters.add(newSf);
    }

    return FilterUtils.DNFToOrLogicTree(newFilters);
}
 
开发者ID:beebeandwer,项目名称:TDDL,代码行数:23,代码来源:MergeCursor.java

示例3: buildTableFilter

import com.taobao.tddl.optimizer.utils.FilterUtils; //导入方法依赖的package包/类
private static void buildTableFilter(TableNode tableNode) {
    List<List<IFilter>> DNFNodes = FilterUtils.toDNFNodesArray(tableNode.getWhereFilter());
    if (DNFNodes.size() == 1) {
        // 即使索引没有选择主键,但是有的filter依旧会在s主键上进行,作为valueFilter,所以要把主键也传进去
        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 {
        // 如果存在多个合取方式的的or组合时,无法区分出key/indexValue/result,直接下推
        tableNode.setResultFilter(tableNode.getWhereFilter());
        tableNode.query((IFilter) null);// 清空where
    }
}
 
开发者ID:loye168,项目名称:tddl5,代码行数:16,代码来源:JoinChooser.java

示例4: buildTableFilter

import com.taobao.tddl.optimizer.utils.FilterUtils; //导入方法依赖的package包/类
private static void buildTableFilter(TableNode tableNode) {
    List<List<IFilter>> DNFNodes = FilterUtils.toDNFNodesArray(tableNode.getWhereFilter());
    if (DNFNodes.size() == 1) {
        // 即使索引没有选择主键,但是有的filter依旧会在s主键上进行,作为valueFilter,所以要把主键也传进去
        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 {
        // 如果存在多个合取方式的的or组合时,无法区分出key/indexValue/result,直接下推
        tableNode.setResultFilter(tableNode.getWhereFilter());
    }
}
 
开发者ID:beebeandwer,项目名称:TDDL,代码行数:14,代码来源:JoinChooser.java

示例5: splitByDNF

import com.taobao.tddl.optimizer.utils.FilterUtils; //导入方法依赖的package包/类
/**
 * 根据where中的所有条件按照or进行分隔,生成多个query请求. (主要考虑部分存储引擎不支持or语法)
 */
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());
    // 判断是否要处理OR转化为index merge,比如mysql可以push
    // 比如hbase/bdb这一类,OR条件目前只能是主键索引,由执行器层面去解决
    // 如果涉及多字段时就需要拆分为index merge,同时做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();
            }
            // 如果找不到对应条件的主键,可能需要全表扫描
            TableNode subQuery = node;
            if (needCopy) {
                subQuery = node.deepCopy();
            }

            subQuery.useIndex(index);
            if (index == null) {// 如果无主键进行全表扫描
                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());// 默认选中主键
        node.setResultFilter(node.getWhereFilter());
    }

    return subQueries;
}
 
开发者ID:loye168,项目名称:tddl5,代码行数:53,代码来源:FilterSpliter.java

示例6: shortestFilter

import com.taobao.tddl.optimizer.utils.FilterUtils; //导入方法依赖的package包/类
/**
 * 将0=1/1=1/true的恒等式进行优化
 */
private static IFilter shortestFilter(IFilter root) throws EmptyResultFilterException {
    IFilter filter = FilterUtils.toDNFAndFlat(root);
    List<List<IFilter>> DNFfilter = FilterUtils.toDNFNodesArray(filter);

    List<List<IFilter>> newDNFfilter = new ArrayList<List<IFilter>>();
    for (List<IFilter> andDNFfilter : DNFfilter) {
        boolean isShortest = false;
        List<IFilter> newAndDNFfilter = new ArrayList<IFilter>();
        for (IFilter one : andDNFfilter) {
            if (one.getOperation() == OPERATION.CONSTANT) {
                boolean flag = false;
                if (((IBooleanFilter) one).getColumn() instanceof ISelectable) {// 可能是个not函数
                    newAndDNFfilter.add(one);// 不能丢弃
                } else {
                    Object value = ((IBooleanFilter) one).getColumn();
                    if (value == null) {
                        flag = false;
                    } else if (value.getClass() == Boolean.class || value.getClass() == boolean.class) {
                        flag = (Boolean) value;
                    } else {
                        // mysql中字符串'true'会被当作0处理
                        flag = (DataType.LongType.convertFrom(value) != 0);
                    }

                    // if (StringUtils.isNumeric(value)) {
                    // flag =
                    // BooleanUtils.toBoolean(Integer.valueOf(value));
                    // } else {
                    // flag = BooleanUtils.toBoolean(((IBooleanFilter)
                    // one).getColumn().toString());
                    // }

                    if (!flag) {
                        isShortest = true;
                        break;
                    }
                }
            } else {
                newAndDNFfilter.add(one);
            }
        }

        if (!isShortest) {
            if (newAndDNFfilter.isEmpty()) {
                // 代表出现为true or xxx,直接返回true
                IBooleanFilter f = ASTNodeFactory.getInstance().createBooleanFilter();
                f.setOperation(OPERATION.CONSTANT);
                f.setColumn("1");
                f.setColumnName(ObjectUtils.toString("1"));
                return f;
            } else {// 针对非false的情况
                newDNFfilter.add(newAndDNFfilter);
            }
        }
    }

    if (newDNFfilter.isEmpty()) {
        throw new EmptyResultFilterException();
    }

    return FilterUtils.DNFToOrLogicTree(newDNFfilter);
}
 
开发者ID:loye168,项目名称:tddl5,代码行数:66,代码来源:FilterPreProcessor.java

示例7: addOtherJoinFilter

import com.taobao.tddl.optimizer.utils.FilterUtils; //导入方法依赖的package包/类
private void addOtherJoinFilter(JoinNode jn, String filter) {
    IFilter f = FilterUtils.createFilter(filter);
    f = FilterPreProcessor.processFilter(f, true, null);
    List<List<IFilter>> DNFFilters = FilterUtils.toDNFNodesArray(FilterUtils.toDNFAndFlat(f));
    jn.setOtherJoinOnFilter(FilterUtils.DNFToOrLogicTree(DNFFilters));
}
 
开发者ID:loye168,项目名称:tddl5,代码行数:7,代码来源:FilterPusherTest.java

示例8: splitByDNF

import com.taobao.tddl.optimizer.utils.FilterUtils; //导入方法依赖的package包/类
/**
 * 根据where中的所有条件按照or进行分隔,生成多个query请求. (主要考虑部分存储引擎不支持or语法)
 */
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());
    // 判断是否要处理OR转化为index merge,比如mysql可以push
    // 比如hbase/bdb这一类,OR条件目前只能是主键索引,由执行器层面去解决
    // 如果涉及多字段时就需要拆分为index merge,同时做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();
            }
            // 如果找不到对应条件的主键,可能需要全表扫描
            TableNode subQuery = node;
            if (needCopy) {
                subQuery = node.deepCopy();
            }

            subQuery.useIndex(index);
            if (index == null) {// 如果无主键进行全表扫描
                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());// 默认选中主键
        node.setResultFilter(node.getWhereFilter());
    }

    return subQueries;
}
 
开发者ID:beebeandwer,项目名称:TDDL,代码行数:51,代码来源:FilterSpliter.java

示例9: shortestFilter

import com.taobao.tddl.optimizer.utils.FilterUtils; //导入方法依赖的package包/类
/**
 * 将0=1/1=1/true的恒等式进行优化
 */
private static IFilter shortestFilter(IFilter root) throws EmptyResultFilterException {
    IFilter filter = FilterUtils.toDNFAndFlat(root);
    List<List<IFilter>> DNFfilter = FilterUtils.toDNFNodesArray(filter);

    List<List<IFilter>> newDNFfilter = new ArrayList<List<IFilter>>();
    for (List<IFilter> andDNFfilter : DNFfilter) {
        boolean isShortest = false;
        List<IFilter> newAndDNFfilter = new ArrayList<IFilter>();
        for (IFilter one : andDNFfilter) {
            if (one.getOperation() == OPERATION.CONSTANT) {
                boolean flag = false;
                if (((IBooleanFilter) one).getColumn() instanceof ISelectable) {// 可能是个not函数
                    newAndDNFfilter.add(one);// 不能丢弃
                } else {
                    String value = ((IBooleanFilter) one).getColumn().toString();
                    if (StringUtils.isNumeric(value)) {
                        flag = BooleanUtils.toBoolean(Integer.valueOf(value));
                    } else {
                        flag = BooleanUtils.toBoolean(((IBooleanFilter) one).getColumn().toString());
                    }
                    if (!flag) {
                        isShortest = true;
                        break;
                    }
                }
            } else {
                newAndDNFfilter.add(one);
            }
        }

        if (!isShortest) {
            if (newAndDNFfilter.isEmpty()) {
                // 代表出现为true or xxx,直接返回true
                IBooleanFilter f = ASTNodeFactory.getInstance().createBooleanFilter();
                f.setOperation(OPERATION.CONSTANT);
                f.setColumn("1");
                f.setColumnName(ObjectUtils.toString("1"));
                return f;
            } else {// 针对非false的情况
                newDNFfilter.add(newAndDNFfilter);
            }
        }
    }

    if (newDNFfilter.isEmpty()) {
        throw new EmptyResultFilterException("空结果");
    }

    return FilterUtils.DNFToOrLogicTree(newDNFfilter);
}
 
开发者ID:beebeandwer,项目名称:TDDL,代码行数:54,代码来源:FilterPreProcessor.java

示例10: addOtherJoinFilter

import com.taobao.tddl.optimizer.utils.FilterUtils; //导入方法依赖的package包/类
private void addOtherJoinFilter(JoinNode jn, String filter) {
    IFilter f = FilterUtils.createFilter(filter);
    List<List<IFilter>> DNFFilters = FilterUtils.toDNFNodesArray(FilterUtils.toDNFAndFlat(f));
    jn.setOtherJoinOnFilter(FilterUtils.DNFToAndLogicTree(DNFFilters.get(0)));
}
 
开发者ID:beebeandwer,项目名称:TDDL,代码行数:6,代码来源:FilterPusherTest.java


注:本文中的com.taobao.tddl.optimizer.utils.FilterUtils.toDNFNodesArray方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。