RecordInput (Hadoop 1.2.2-SNAPSHOT API)

所有已知实现类:

BinaryRecordInput, CsvRecordInput, TypedBytesRecordInput, XmlRecordInput
```
public interface RecordInput
```
Interface that all the Deserializers have to implement.

方法概要

方法
限定符和类型	方法和说明
`void`	`endMap(String tag)` Check the mark for end of the serialized map.
`void`	`endRecord(String tag)` Check the mark for end of the serialized record.
`void`	`endVector(String tag)` Check the mark for end of the serialized vector.
`boolean`	`readBool(String tag)` Read a boolean from serialized record.
`Buffer`	`readBuffer(String tag)` Read byte array from serialized record.
`byte`	`readByte(String tag)` Read a byte from serialized record.
`double`	`readDouble(String tag)` Read a double-precision number from serialized record.
`float`	`readFloat(String tag)` Read a single-precision float from serialized record.
`int`	`readInt(String tag)` Read an integer from serialized record.
`long`	`readLong(String tag)` Read a long integer from serialized record.
`String`	`readString(String tag)` Read a UTF-8 encoded string from serialized record.
`Index`	`startMap(String tag)` Check the mark for start of the serialized map.
`void`	`startRecord(String tag)` Check the mark for start of the serialized record.
`Index`	`startVector(String tag)` Check the mark for start of the serialized vector.

- 方法详细资料
  - readByte
```
byte readByte(String tag)
              throws IOException
```
    Read a byte from serialized record.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    返回:
    value read from serialized record.
    
    抛出:
    
    IOException
  - readBool
```
boolean readBool(String tag)
                 throws IOException
```
    Read a boolean from serialized record.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    返回:
    value read from serialized record.
    
    抛出:
    
    IOException
  - readInt
```
int readInt(String tag)
            throws IOException
```
    Read an integer from serialized record.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    返回:
    value read from serialized record.
    
    抛出:
    
    IOException
  - readLong
```
long readLong(String tag)
              throws IOException
```
    Read a long integer from serialized record.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    返回:
    value read from serialized record.
    
    抛出:
    
    IOException
  - readFloat
```
float readFloat(String tag)
                throws IOException
```
    Read a single-precision float from serialized record.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    返回:
    value read from serialized record.
    
    抛出:
    
    IOException
  - readDouble
```
double readDouble(String tag)
                  throws IOException
```
    Read a double-precision number from serialized record.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    返回:
    value read from serialized record.
    
    抛出:
    
    IOException
  - readString
```
String readString(String tag)
                  throws IOException
```
    Read a UTF-8 encoded string from serialized record.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    返回:
    value read from serialized record.
    
    抛出:
    
    IOException
  - readBuffer
```
Buffer readBuffer(String tag)
                  throws IOException
```
    Read byte array from serialized record.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    返回:
    value read from serialized record.
    
    抛出:
    
    IOException
  - startRecord
```
void startRecord(String tag)
                 throws IOException
```
    Check the mark for start of the serialized record.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    抛出:
    
    IOException
  - endRecord
```
void endRecord(String tag)
               throws IOException
```
    Check the mark for end of the serialized record.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    抛出:
    
    IOException
  - startVector
```
Index startVector(String tag)
                  throws IOException
```
    Check the mark for start of the serialized vector.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    返回:
    Index that is used to count the number of elements.
    
    抛出:
    
    IOException
  - endVector
```
void endVector(String tag)
               throws IOException
```
    Check the mark for end of the serialized vector.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    抛出:
    
    IOException
  - startMap
```
Index startMap(String tag)
               throws IOException
```
    Check the mark for start of the serialized map.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    返回:
    Index that is used to count the number of map entries.
    
    抛出:
    
    IOException
  - endMap
```
void endMap(String tag)
            throws IOException
```
    Check the mark for end of the serialized map.
    
    参数:
    tag - Used by tagged serialization formats (such as XML)
    
    抛出:
    
    IOException

接口 RecordInput

方法概要

方法详细资料

readByte

readBool

readInt

readLong

readFloat

readDouble

readString

readBuffer

startRecord

endRecord

startVector

endVector

startMap

endMap