您好,登錄后才能下訂單哦!
一、FilterList
// 通過(guò)將operator參數(shù)設(shè)置為Operator.MUST_PASS_ONE,達(dá)到list中各filter為"或"的關(guān)系 or // 默認(rèn)operator參數(shù)的值為Operator.MUST_PASS_ALL,即list中各filter為"并"的關(guān)系 and FilterList f=new FilterList(FilterList.Operator.MUST_PASS_ONE);
二、幾大Filter
1、Comparision Filters
1.1 RowFilter √
1.2 FamilyFilter √
1.3 QualifierFilter √
1.4 ValueFilter √
1.5 DependentColumnFilter ×
2、Dedicated Filters
2.1 SingleColumnValueFilter ×
2.2 SingleColumnValueExcludeFilter ×
2.3 PrefixFilter ×
2.4 PageFilter ×
2.5 KeyOnlyFilter ×
2.6 FirstKeyOnlyFilter ×
2.7 TimestampsFilter ×
2.8 RandomRowFilter ×
3、Decorating Filters
3.1 SkipFilter ×
3.2 WhileMatchFilters ×
1.1 RowFilter
格式:RowFilter(CompareFilter.CompareOp rowCompareOp, ByteArrayComparable rowComparator)
參數(shù)一 Operator Description
LESS 小于
LESS_OR_EQUAL 小于等于
EQUAL 等于
NOT_EQUAL 不等于
GREATER_OR_EQUAL 大于等于
GREATER 大于
NO_OP 排除所有
參數(shù)二 ByteArrayComparable 可用
BinaryComparator, BinaryPrefixComparator, BitComparator, LongComparator, NullComparator, RegexStringComparator, SubstringComparator
例子:Filter filter=new RowFilter(CompareOp.EQUAL, new BinaryComparator(Bytes.toBytes(RowKey))
相關(guān)的過(guò)濾方法使用:
提取rowkey以01結(jié)尾數(shù)據(jù)--正則表達(dá)式
Filter filter = new RowFilter(CompareFilter.CompareOp.EQUAL,new RegexStringComparator(".*01$"));
提取rowkey以包含201407的數(shù)據(jù)
Filter filter = new RowFilter(CompareFilter.CompareOp.EQUAL,new SubstringComparator("201407"));
提取rowkey以123開(kāi)頭的數(shù)據(jù)
Filter filter = new RowFilter(CompareFilter.CompareOp.EQUAL,new BinaryPrefixComparator("123".getBytes()));
提取rowkey小于等于row010的行
Filter filter1 = new RowFilter(CompareFilter.CompareOp.LESS_OR_EQUAL,new BinaryComparator("row010".getBytes()));
1.2 FamilyFilter(同上)
1.3 QualifierFilter(同上)--------當(dāng)列為數(shù)字,不管用了?why--------
1.4 ValueFilter(同上)
1.5 DependentColumnFilter 未完待續(xù)!
免責(zé)聲明:本站發(fā)布的內(nèi)容(圖片、視頻和文字)以原創(chuàng)、轉(zhuǎn)載和分享為主,文章觀點(diǎn)不代表本網(wǎng)站立場(chǎng),如果涉及侵權(quán)請(qǐng)聯(lián)系站長(zhǎng)郵箱:is@yisu.com進(jìn)行舉報(bào),并提供相關(guān)證據(jù),一經(jīng)查實(shí),將立刻刪除涉嫌侵權(quán)內(nèi)容。