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Golang encoding.EncodeNotNullAscending函数代码示例

原作者: [db:作者] 来自: [db:来源] 收藏 邀请

本文整理汇总了Golang中github.com/cockroachdb/cockroach/util/encoding.EncodeNotNullAscending函数的典型用法代码示例。如果您正苦于以下问题：Golang EncodeNotNullAscending函数的具体用法？Golang EncodeNotNullAscending怎么用？Golang EncodeNotNullAscending使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。



在下文中一共展示了EncodeNotNullAscending函数的5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，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: encodeEndConstraintAscending

func encodeEndConstraintAscending(spans []span, c *parser.ComparisonExpr,
	isLastEndConstraint bool) {
	switch c.Operator {
	case parser.Is:
		// An IS NULL expressions allows us to constrain the end of the range
		// to stop at NULL.
		if c.Right != parser.DNull {
			panic("Expected NULL operand for IS operator.")
		}
		for i := range spans {
			spans[i].end = encoding.EncodeNotNullAscending(spans[i].end)
		}
	default:
		if datum, ok := c.Right.(parser.Datum); ok {
			if c.Operator != parser.LT {
				for i := range spans {
					spans[i].end = encodeInclusiveEndValue(
						spans[i].end, datum, encoding.Ascending, isLastEndConstraint)
				}
				break
			}
			if !isLastEndConstraint {
				panic("Can't have other end constraints after a '<' constraint.")
			}
			key, err := encodeTableKey(nil, datum, encoding.Ascending)
			if err != nil {
				panic(err)
			}
			// Append the constraint to all of the existing spans.
			for i := range spans {
				spans[i].end = append(spans[i].end, key...)
			}
		}
	}
}
开发者ID:surpass，项目名称:cockroach，代码行数:35，代码来源:select.go


示例2: encodeStartConstraintAscending

func encodeStartConstraintAscending(spans []span, c *parser.ComparisonExpr) {
	switch c.Operator {
	case parser.IsNot:
		// A IS NOT NULL expression allows us to constrain the start of
		// the range to not include NULL.
		for i := range spans {
			spans[i].start = encoding.EncodeNotNullAscending(spans[i].start)
		}
	case parser.GT:
		panic("'>' operators should have been transformed to '>='.")
	case parser.NE:
		panic("'!=' operators should have been transformed to 'IS NOT NULL'")
	default:
		if datum, ok := c.Right.(parser.Datum); ok {
			key, err := encodeTableKey(nil, datum, encoding.Ascending)
			if err != nil {
				panic(err)
			}
			// Append the constraint to all of the existing spans.
			for i := range spans {
				spans[i].start = append(spans[i].start, key...)
			}
		}
	}
}
开发者ID:surpass，项目名称:cockroach，代码行数:25，代码来源:select.go


示例3: encodeStartConstraintAscending

func encodeStartConstraintAscending(spans []span, c *parser.ComparisonExpr) {
	switch c.Operator {
	case parser.IsNot:
		// A IS NOT NULL expression allows us to constrain the start of
		// the range to not include NULL.
		if c.Right != parser.DNull {
			panic(fmt.Sprintf("expected NULL operand for IS NOT operator, found %v", c.Right))
		}
		for i := range spans {
			spans[i].start = encoding.EncodeNotNullAscending(spans[i].start)
		}
	case parser.NE:
		panic("'!=' operators should have been transformed to 'IS NOT NULL'")
	case parser.GE, parser.EQ:
		datum := c.Right.(parser.Datum)
		key, err := encodeTableKey(nil, datum, encoding.Ascending)
		if err != nil {
			panic(err)
		}
		// Append the constraint to all of the existing spans.
		for i := range spans {
			spans[i].start = append(spans[i].start, key...)
		}
	case parser.GT:
		// A ">" constraint is the last start constraint. Since the constraint
		// is exclusive and the start key is inclusive, we're going to apply
		// a .PrefixEnd(). Note that a ">" is usually transformed to a ">=".
		datum := c.Right.(parser.Datum)
		key, pErr := encodeTableKey(nil, datum, encoding.Ascending)
		if pErr != nil {
			panic(pErr)
		}
		// Append the constraint to all of the existing spans.
		for i := range spans {
			spans[i].start = append(spans[i].start, key...)
			spans[i].start = spans[i].start.PrefixEnd()
		}
	default:
		panic(fmt.Sprintf("unexpected operator: %s", c))
	}
}
开发者ID:petermattis，项目名称:cockroach，代码行数:41，代码来源:index_selection.go


示例4: TestPrettyPrint

func TestPrettyPrint(t *testing.T) {

	tm, _ := time.Parse(time.UnixDate, "Sat Mar  7 11:06:39 UTC 2015")
	txnID := uuid.NewV4()

	testCases := []struct {
		key roachpb.Key
		exp string
	}{
		// local
		{StoreIdentKey(), "/Local/Store/storeIdent"},
		{StoreGossipKey(), "/Local/Store/gossipBootstrap"},

		{SequenceCacheKeyPrefix(roachpb.RangeID(1000001), txnID), fmt.Sprintf(`/Local/RangeID/1000001/r/SequenceCache/%q`, txnID)},
		{SequenceCacheKey(roachpb.RangeID(1000001), txnID, uint32(111), uint32(222)), fmt.Sprintf(`/Local/RangeID/1000001/r/SequenceCache/%q/epoch:111/seq:222`, txnID)},
		{RaftTombstoneKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftTombstone"},
		{RaftAppliedIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftAppliedIndex"},
		{RaftTruncatedStateKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftTruncatedState"},
		{RangeLeaderLeaseKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeLeaderLease"},
		{RangeStatsKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeStats"},

		{RaftHardStateKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RaftHardState"},
		{RaftLastIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RaftLastIndex"},
		{RaftLogKey(roachpb.RangeID(1000001), uint64(200001)), "/Local/RangeID/1000001/u/RaftLog/logIndex:200001"},
		{RangeLastVerificationTimestampKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RangeLastVerificationTimestamp"},

		{MakeRangeKeyPrefix(roachpb.RKey("ok")), `/Local/Range/"ok"`},
		{RangeDescriptorKey(roachpb.RKey("111")), `/Local/Range/"111"/RangeDescriptor`},
		{RangeTreeNodeKey(roachpb.RKey("111")), `/Local/Range/"111"/RangeTreeNode`},
		{TransactionKey(roachpb.Key("111"), txnID), fmt.Sprintf(`/Local/Range/"111"/Transaction/addrKey:/id:%q`, txnID)},

		{LocalMax, `/Meta1/""`}, // LocalMax == Meta1Prefix

		// system
		{makeKey(Meta2Prefix, roachpb.Key("foo")), `/Meta2/"foo"`},
		{makeKey(Meta1Prefix, roachpb.Key("foo")), `/Meta1/"foo"`},
		{RangeMetaKey(roachpb.RKey("f")), `/Meta2/"f"`},

		{StoreStatusKey(2222), "/System/StatusStore/2222"},
		{NodeStatusKey(1111), "/System/StatusNode/1111"},

		{SystemMax, "/System/Max"},

		// key of key
		{RangeMetaKey(roachpb.RKey(MakeRangeKeyPrefix(roachpb.RKey("ok")))), `/Meta2/Local/Range/"ok"`},
		{RangeMetaKey(roachpb.RKey(makeKey(MakeTablePrefix(42), roachpb.RKey("foo")))), `/Meta2/Table/42/"foo"`},
		{RangeMetaKey(roachpb.RKey(makeKey(Meta2Prefix, roachpb.Key("foo")))), `/Meta1/"foo"`},

		// table
		{UserTableDataMin, "/Table/50"},
		{MakeTablePrefix(111), "/Table/111"},
		{makeKey(MakeTablePrefix(42), roachpb.RKey("foo")), `/Table/42/"foo"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatAscending(nil, float64(233.221112)))),
			"/Table/42/233.221112"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatDescending(nil, float64(-233.221112)))),
			"/Table/42/233.221112"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatAscending(nil, math.Inf(1)))),
			"/Table/42/+Inf"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatAscending(nil, math.NaN()))),
			"/Table/42/NaN"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeVarintAscending(nil, 1222)),
			roachpb.RKey(encoding.EncodeStringAscending(nil, "handsome man"))),
			`/Table/42/1222/"handsome man"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeVarintAscending(nil, 1222))),
			`/Table/42/1222`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeVarintDescending(nil, 1222))),
			`/Table/42/-1223`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeBytesAscending(nil, []byte{1, 2, 8, 255}))),
			`/Table/42/"\x01\x02\b\xff"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeBytesAscending(nil, []byte{1, 2, 8, 255})),
			roachpb.RKey("bar")), `/Table/42/"\x01\x02\b\xff"/"bar"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeBytesDescending(nil, []byte{1, 2, 8, 255})),
			roachpb.RKey("bar")), `/Table/42/"\x01\x02\b\xff"/"bar"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeNullAscending(nil))), "/Table/42/NULL"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeNotNullAscending(nil))), "/Table/42/#"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeTimeAscending(nil, tm))),
			"/Table/42/Sat Mar  7 11:06:39 UTC 2015"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeTimeDescending(nil, tm))),
			"/Table/42/Sat Mar  7 11:06:39 UTC 2015"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeDecimalAscending(nil, inf.NewDec(1234, 2)))),
			"/Table/42/12.34"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeDecimalDescending(nil, inf.NewDec(1234, 2)))),
			"/Table/42/-12.34"},

//.........这里部分代码省略.........
开发者ID:liugangnhm，项目名称:cockroach，代码行数:101，代码来源:printer_test.go


示例5: TestPrettyPrint

func TestPrettyPrint(t *testing.T) {

	tm, _ := time.Parse(time.RFC3339Nano, "2016-03-30T13:40:35.053725008Z")
	duration := duration.Duration{Months: 1, Days: 1, Nanos: 1 * time.Second.Nanoseconds()}
	durationAsc, _ := encoding.EncodeDurationAscending(nil, duration)
	durationDesc, _ := encoding.EncodeDurationDescending(nil, duration)
	txnID := uuid.NewV4()

	// The following test cases encode keys with a mixture of ascending and descending direction,
	// but always decode keys in the ascending direction. This is why some of the decoded values
	// seem bizarre.
	testCases := []struct {
		key roachpb.Key
		exp string
	}{
		// local
		{StoreIdentKey(), "/Local/Store/storeIdent"},
		{StoreGossipKey(), "/Local/Store/gossipBootstrap"},

		{AbortCacheKey(roachpb.RangeID(1000001), txnID), fmt.Sprintf(`/Local/RangeID/1000001/r/AbortCache/%q`, txnID)},
		{RaftTombstoneKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftTombstone"},
		{RaftAppliedIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftAppliedIndex"},
		{LeaseAppliedIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/LeaseAppliedIndex"},
		{RaftTruncatedStateKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RaftTruncatedState"},
		{RangeLeaderLeaseKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeLeaderLease"},
		{RangeStatsKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeStats"},
		{RangeFrozenStatusKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeFrozenStatus"},
		{RangeLastGCKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/r/RangeLastGC"},

		{RaftHardStateKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RaftHardState"},
		{RaftLastIndexKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RaftLastIndex"},
		{RaftLogKey(roachpb.RangeID(1000001), uint64(200001)), "/Local/RangeID/1000001/u/RaftLog/logIndex:200001"},
		{RangeLastReplicaGCTimestampKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RangeLastReplicaGCTimestamp"},
		{RangeLastVerificationTimestampKey(roachpb.RangeID(1000001)), "/Local/RangeID/1000001/u/RangeLastVerificationTimestamp"},

		{MakeRangeKeyPrefix(roachpb.RKey("ok")), `/Local/Range/"ok"`},
		{RangeDescriptorKey(roachpb.RKey("111")), `/Local/Range/"111"/RangeDescriptor`},
		{RangeTreeNodeKey(roachpb.RKey("111")), `/Local/Range/"111"/RangeTreeNode`},
		{TransactionKey(roachpb.Key("111"), txnID), fmt.Sprintf(`/Local/Range/"111"/Transaction/addrKey:/id:%q`, txnID)},

		{LocalMax, `/Meta1/""`}, // LocalMax == Meta1Prefix

		// system
		{makeKey(Meta2Prefix, roachpb.Key("foo")), `/Meta2/"foo"`},
		{makeKey(Meta1Prefix, roachpb.Key("foo")), `/Meta1/"foo"`},
		{RangeMetaKey(roachpb.RKey("f")), `/Meta2/"f"`},

		{NodeStatusKey(1111), "/System/StatusNode/1111"},

		{SystemMax, "/System/Max"},

		// key of key
		{RangeMetaKey(roachpb.RKey(MakeRangeKeyPrefix(roachpb.RKey("ok")))), `/Meta2/Local/Range/"ok"`},
		{RangeMetaKey(roachpb.RKey(makeKey(MakeTablePrefix(42), roachpb.RKey("foo")))), `/Meta2/Table/42/"foo"`},
		{RangeMetaKey(roachpb.RKey(makeKey(Meta2Prefix, roachpb.Key("foo")))), `/Meta1/"foo"`},

		// table
		{UserTableDataMin, "/Table/50"},
		{MakeTablePrefix(111), "/Table/111"},
		{makeKey(MakeTablePrefix(42), roachpb.RKey("foo")), `/Table/42/"foo"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatAscending(nil, float64(233.221112)))),
			"/Table/42/233.221112"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatDescending(nil, float64(-233.221112)))),
			"/Table/42/233.221112"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatAscending(nil, math.Inf(1)))),
			"/Table/42/+Inf"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeFloatAscending(nil, math.NaN()))),
			"/Table/42/NaN"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeVarintAscending(nil, 1222)),
			roachpb.RKey(encoding.EncodeStringAscending(nil, "handsome man"))),
			`/Table/42/1222/"handsome man"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeVarintAscending(nil, 1222))),
			`/Table/42/1222`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeVarintDescending(nil, 1222))),
			`/Table/42/-1223`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeBytesAscending(nil, []byte{1, 2, 8, 255}))),
			`/Table/42/"\x01\x02\b\xff"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeBytesAscending(nil, []byte{1, 2, 8, 255})),
			roachpb.RKey("bar")), `/Table/42/"\x01\x02\b\xff"/"bar"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeBytesDescending(nil, []byte{1, 2, 8, 255})),
			roachpb.RKey("bar")), `/Table/42/"\x01\x02\b\xff"/"bar"`},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeNullAscending(nil))), "/Table/42/NULL"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeNotNullAscending(nil))), "/Table/42/#"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeTimeAscending(nil, tm))),
			"/Table/42/2016-03-30T13:40:35.053725008Z"},
		{makeKey(MakeTablePrefix(42),
			roachpb.RKey(encoding.EncodeTimeDescending(nil, tm))),
//.........这里部分代码省略.........
开发者ID:CubeLite，项目名称:cockroach，代码行数:101，代码来源:printer_test.go



注：本文中的github.com/cockroachdb/cockroach/util/encoding.EncodeNotNullAscending函数示例整理自Github/MSDocs等源码及文档管理平台，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。

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