## org.apache.hadoop.record
Class BinaryRecordInput

    java.lang.Object
      org.apache.hadoop.record.BinaryRecordInput

All Implemented Interfaces:
  RecordInput

    public class BinaryRecordInput

extends Object
implements RecordInput

Constructor Summary
`BinaryRecordInput(DataInput din)` Creates a new instance of BinaryRecordInput
`BinaryRecordInput(InputStream strm)` Creates a new instance of BinaryRecordInput

Method Summary
`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.
`static BinaryRecordInput` `get(DataInput inp)` Get a thread-local record input for the supplied DataInput.
`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.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### BinaryRecordInput

    public BinaryRecordInput(InputStream strm)

  Creates a new instance of BinaryRecordInput

### BinaryRecordInput

    public BinaryRecordInput(DataInput din)

  Creates a new instance of BinaryRecordInput

Method Detail

### get

    public static BinaryRecordInput get(DataInput inp)

  Get a thread-local record input for the supplied DataInput.

  Parameters:
    `inp` - data input stream
  Returns:
    binary record input corresponding to the supplied DataInput.

### readByte

    public byte readByte(String tag)
                  throws IOException

  Description copied from interface: `RecordInput`
  Read a byte from serialized record.

  Specified by:
    `readByte` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Returns:
    value read from serialized record.
  Throws:
    `IOException`

### readBool

    public boolean readBool(String tag)
                     throws IOException

  Description copied from interface: `RecordInput`
  Read a boolean from serialized record.

  Specified by:
    `readBool` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Returns:
    value read from serialized record.
  Throws:
    `IOException`

### readInt

    public int readInt(String tag)
                throws IOException

  Description copied from interface: `RecordInput`
  Read an integer from serialized record.

  Specified by:
    `readInt` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Returns:
    value read from serialized record.
  Throws:
    `IOException`

### readLong

    public long readLong(String tag)
                  throws IOException

  Description copied from interface: `RecordInput`
  Read a long integer from serialized record.

  Specified by:
    `readLong` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Returns:
    value read from serialized record.
  Throws:
    `IOException`

### readFloat

    public float readFloat(String tag)
                    throws IOException

  Description copied from interface: `RecordInput`
  Read a single-precision float from serialized record.

  Specified by:
    `readFloat` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Returns:
    value read from serialized record.
  Throws:
    `IOException`

### readDouble

    public double readDouble(String tag)
                      throws IOException

  Description copied from interface: `RecordInput`
  Read a double-precision number from serialized record.

  Specified by:
    `readDouble` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Returns:
    value read from serialized record.
  Throws:
    `IOException`

### readString

    public String readString(String tag)
                      throws IOException

  Description copied from interface: `RecordInput`
  Read a UTF-8 encoded string from serialized record.

  Specified by:
    `readString` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Returns:
    value read from serialized record.
  Throws:
    `IOException`

### readBuffer

    public Buffer readBuffer(String tag)
                      throws IOException

  Description copied from interface: `RecordInput`
  Read byte array from serialized record.

  Specified by:
    `readBuffer` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Returns:
    value read from serialized record.
  Throws:
    `IOException`

### startRecord

    public void startRecord(String tag)
                     throws IOException

  Description copied from interface: `RecordInput`
  Check the mark for start of the serialized record.

  Specified by:
    `startRecord` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Throws:
    `IOException`

### endRecord

    public void endRecord(String tag)
                   throws IOException

  Description copied from interface: `RecordInput`
  Check the mark for end of the serialized record.

  Specified by:
    `endRecord` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Throws:
    `IOException`

### startVector

    public Index startVector(String tag)
                      throws IOException

  Description copied from interface: `RecordInput`
  Check the mark for start of the serialized vector.

  Specified by:
    `startVector` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Returns:
    Index that is used to count the number of elements.
  Throws:
    `IOException`

### endVector

    public void endVector(String tag)
                   throws IOException

  Description copied from interface: `RecordInput`
  Check the mark for end of the serialized vector.

  Specified by:
    `endVector` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Throws:
    `IOException`

### startMap

    public Index startMap(String tag)
                   throws IOException

  Description copied from interface: `RecordInput`
  Check the mark for start of the serialized map.

  Specified by:
    `startMap` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Returns:
    Index that is used to count the number of map entries.
  Throws:
    `IOException`

### endMap

    public void endMap(String tag)
                throws IOException

  Description copied from interface: `RecordInput`
  Check the mark for end of the serialized map.

  Specified by:
    `endMap` in interface `RecordInput`
  Parameters:
    `tag` - Used by tagged serialization formats (such as XML)
  Throws:
    `IOException`

Copyright © 2009 The Apache Software Foundation