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com.jguild.jrpm.io
Class IndexEntry  

java.lang.Object
  com.jguild.jrpm.io.IndexEntry

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public class IndexEntry

extends java.lang.Object

RPM Index Entry (16 byte).

1. tag; what the data is for (4 bytes)
2. type; what type of data is stored (see RPMFileType.java) (4 bytes)
3. offset; where to the data begins (4 bytes)
4. count; how much data of the type is there (4 bytes)

Version:

$Id: IndexEntry.java,v 1.4 2003/10/13 19:11:48 mkuss Exp $

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Field Summary
private  long	count
private static int	INDEX_LENGTH
private static org.apache.log4j.Logger	logger
private  long	offset
private  long	tag
private  com.jguild.jrpm.io.constant.RPMIndexType	type

 

Constructor Summary

IndexEntry(java.io.DataInputStream inputStream)           Constructs a IndexEntry out of a InputStream.

 

Method Summary
private static void	check(boolean test)           Asserts a boolean value and throws an exception if it is false
long	getCount()           Get the number of elements of this data type
long	getOffset()           Returns the offset of this data type
int	getSize()           Get the size of this index entry in bytes
long	getTag()           Get the tag id as a long
com.jguild.jrpm.io.constant.RPMIndexType	getType()           Get the data type of this entry

 

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

 

Field Detail

INDEX_LENGTH

private static final int INDEX_LENGTH

See Also:

Constant Field Values

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logger

private static final org.apache.log4j.Logger logger

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type

private com.jguild.jrpm.io.constant.RPMIndexType type

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count

private long count

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offset

private long offset

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tag

private long tag

Constructor Detail

IndexEntry

public IndexEntry(java.io.DataInputStream inputStream)
           throws java.io.IOException

Constructs a IndexEntry out of a InputStream. This will read the tag id, the data type, the offset of the data and the number of elements of data. Note that the number of elements varies in its meaning depending on the data type.

Method Detail

getCount

public long getCount()

Get the number of elements of this data type

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getOffset

public long getOffset()

Returns the offset of this data type

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getSize

public int getSize()

Get the size of this index entry in bytes

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getTag

public long getTag()

Get the tag id as a long

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getType

public com.jguild.jrpm.io.constant.RPMIndexType getType()

Get the data type of this entry

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check

private static final void check(boolean test)
                         throws java.io.IOException

Asserts a boolean value and throws an exception if it is false

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