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java.lang.Object | +--net.jxta.search.resolver.io.Directory
A Directory is a flat list of files. Files may be written once, when they are created. Once a file is created it may only be opened for read, or deleted. Random access is permitted when reading and writing.
Constructor Summary | |
Directory()
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Method Summary | |
abstract void |
close()
Closes the store. |
abstract Output |
createFile(java.lang.String name)
Creates a new, empty file in the directory with the given name. |
abstract void |
deleteFile(java.lang.String name)
Removes an existing file in the directory. |
abstract boolean |
fileExists(java.lang.String name)
Returns true iff a file with the given name exists. |
abstract long |
fileLength(java.lang.String name)
Returns the length of a file in the directory. |
abstract long |
fileModified(java.lang.String name)
Returns the time the named file was last modified. |
abstract java.lang.String[] |
list()
Returns an array of strings, one for each file in the directory. |
abstract Input |
openFile(java.lang.String name)
Returns a stream reading an existing file. |
int[] |
readVIntFile(java.lang.String fileName,
boolean deltaDecode)
Utility to read an int array from a file. |
long[] |
readVLongFile(java.lang.String fileName,
boolean deltaDecode)
Utility to read a long array from a file. |
abstract void |
renameFile(java.lang.String from,
java.lang.String to)
Renames an existing file in the directory. |
void |
writeVIntFile(int[] ints,
int length,
java.lang.String fileName,
boolean deltaEncode)
Utility to write an int array to a file. |
void |
writeVLongFile(long[] longs,
int length,
java.lang.String fileName,
boolean deltaEncode)
Utility to write a long array to a file. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public Directory()
Method Detail |
public abstract java.lang.String[] list() throws java.io.IOException, java.lang.SecurityException
public abstract boolean fileExists(java.lang.String name) throws java.io.IOException, java.lang.SecurityException
public abstract long fileModified(java.lang.String name) throws java.io.IOException, java.lang.SecurityException
public abstract void deleteFile(java.lang.String name) throws java.io.IOException, java.lang.SecurityException
public abstract void renameFile(java.lang.String from, java.lang.String to) throws java.io.IOException, java.lang.SecurityException
public abstract long fileLength(java.lang.String name) throws java.io.IOException, java.lang.SecurityException
public abstract Output createFile(java.lang.String name) throws java.io.IOException, java.lang.SecurityException
public abstract Input openFile(java.lang.String name) throws java.io.IOException, java.lang.SecurityException
public abstract void close() throws java.io.IOException, java.lang.SecurityException
public void writeVIntFile(int[] ints, int length, java.lang.String fileName, boolean deltaEncode) throws java.io.IOException
public void writeVLongFile(long[] longs, int length, java.lang.String fileName, boolean deltaEncode) throws java.io.IOException
public int[] readVIntFile(java.lang.String fileName, boolean deltaDecode) throws java.io.IOException
public long[] readVLongFile(java.lang.String fileName, boolean deltaDecode) throws java.io.IOException
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