Uses of Interface
com.aliyun.odps.io.WritableComparable

Packages that use WritableComparable

Package	Description
com.aliyun.odps.io	ODPS中使用的Writable数据类型，目前只有Graph作业需要使用

Uses of WritableComparable in com.aliyun.odps.io

Subinterfaces of WritableComparable in com.aliyun.odps.io

Modifier and Type	Interface and Description
interface	InputBlobWritable InputBlobWritable表示ODPS表或分区中列类型为blob的输入接口.
interface	OutputBlobWritable OutputBlobWritable表示ODPS表或分区中列类型为blob的输出接口, 该接口只能用于 com.aliyun.odps.mapreduce.Reducer向 com.aliyun.odps.Record 中写入blob类型的列.

Classes in com.aliyun.odps.io that implement WritableComparable

Modifier and Type	Class and Description
class	AbstractDatetimeWritable<T extends AbstractDatetimeWritable> AbstractDatetimeWritable 提供了 datetime 的 Writable 和 WritableComparable 的实现
class	BigDecimalWritable
class	BooleanWritable BooleanWritable 提供了 boolean 的 Writable 和 WritableComparable 的实现
class	BytesWritable BytesWritable 提供了 byte[] 的 Writable 和 WritableComparable 的实现.
class	ByteWritable ByteWritable 提供了 tinyint 的 Writable 和 WritableComparable 的实现
class	CharWritable CharWritable 提供了 char 的 Writable 和 WritableComparable 的实现
class	DatetimeWritable DatetimeWritable 提供了 datetime 的 Writable 和 WritableComparable 的实现
class	DateWritable DateWritable 提供了 date 的 Writable 和 WritableComparable 的实现。
class	DoubleWritable DoubleWritable 提供了 double 的 Writable 和 WritableComparable 的实现
class	FloatWritable FloatWritable 提供了 float 的 Writable 和 WritableComparable 的实现
class	IntervalDayTimeWritable IntervalDayTimeWritable 提供了 interval_day_time 的 Writable 和 WritableComparable 的实现
class	IntervalYearMonthWritable IntervalYearMonthWritable 提供了 interval_year_month 的 Writable 和 WritableComparable 的实现
class	IntWritable IntWritable 提供了 int 的 Writable 和 WritableComparable 的实现
class	LongWritable LongWritable 提供了 long 的 Writable 和 WritableComparable 的实现
class	NullWritable NullWritable 提供了 null （空值）的 Writable 和 WritableComparable 的实现.
class	ShortWritable ShortWritable 提供了 smallint 的 Writable 和 WritableComparable 的实现
class	Text Text 提供了字符串的 Writable 和 WritableComparable 的实现.
class	TimestampWritable TimestampWritable 提供了 datetime 的 Writable 和 WritableComparable 的实现
class	Tuple Tuple 是 Writable 对象的有序集.
class	VarcharWritable VarcharWritable 提供了 varchar 的 Writable 和 WritableComparable 的实现

Methods in com.aliyun.odps.io that return WritableComparable

Modifier and Type	Method and Description
WritableComparable	SortedMapWritable.firstKey()
WritableComparable	SortedMapWritable.lastKey()
WritableComparable	WritableComparator.newKey() 新建一个新的 WritableComparable 对象.

Methods in com.aliyun.odps.io that return types with arguments of type WritableComparable

Modifier and Type	Method and Description
Comparator<? super WritableComparable>	SortedMapWritable.comparator()
Set<Map.Entry<WritableComparable,Writable>>	SortedMapWritable.entrySet()
Class<? extends WritableComparable>	WritableComparator.getKeyClass() 返回待比较的 WritableComparable 实现类
SortedMap<WritableComparable,Writable>	SortedMapWritable.headMap(WritableComparable toKey)
Set<WritableComparable>	SortedMapWritable.keySet()
SortedMap<WritableComparable,Writable>	SortedMapWritable.subMap(WritableComparable fromKey, WritableComparable toKey)
SortedMap<WritableComparable,Writable>	SortedMapWritable.tailMap(WritableComparable fromKey)

Methods in com.aliyun.odps.io with parameters of type WritableComparable

Modifier and Type	Method and Description
int	IntervalDayTimeWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
int	IntervalDayTimeWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
int	TimestampWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
int	TimestampWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
int	LongWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
int	LongWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
int	DatetimeWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
int	DatetimeWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
int	DateWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
int	DateWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
int	IntervalYearMonthWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
int	IntervalYearMonthWritable.DecreasingComparator.compare(WritableComparable a, WritableComparable b)
int	WritableComparator.compare(WritableComparable a, WritableComparable b) 比较两个 WritableComparable 对象.
int	WritableComparator.compare(WritableComparable a, WritableComparable b) 比较两个 WritableComparable 对象.
SortedMap<WritableComparable,Writable>	SortedMapWritable.headMap(WritableComparable toKey)
Writable	SortedMapWritable.put(WritableComparable key, Writable value)
SortedMap<WritableComparable,Writable>	SortedMapWritable.subMap(WritableComparable fromKey, WritableComparable toKey)
SortedMap<WritableComparable,Writable>	SortedMapWritable.subMap(WritableComparable fromKey, WritableComparable toKey)
SortedMap<WritableComparable,Writable>	SortedMapWritable.tailMap(WritableComparable fromKey)

Method parameters in com.aliyun.odps.io with type arguments of type WritableComparable

Modifier and Type	Method and Description
static WritableComparator	WritableComparator.get(Class<? extends WritableComparable> c) 此静态方法用于获取为类型 c 注册的 WritableComparator 实现.
void	SortedMapWritable.putAll(Map<? extends WritableComparable,? extends Writable> t)

Constructor parameters in com.aliyun.odps.io with type arguments of type WritableComparable

Constructor and Description
Comparator(Class<? extends WritableComparable> keyClass)