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Java Source Code / Java Documentation » Search Engine » compass 2.0 » org.apache.lucene.store.jdbc.handler

Source Cross Reference Class Diagram Java Document (Java Doc)

org.apache.lucene.store.jdbc.handler .FileEntryHandler

All known Subclasses:   org.apache.lucene.store.jdbc.handler .AbstractFileEntryHandler,  org.apache.lucene.store.jdbc.handler .NoOpFileEntryHandler,
FileEntryHandler
public interface FileEntryHandler (Code)
A file entry handler acts as a delegate to the JdbcDirectory for all "file" level operations. Allows the JdbcDirectory to be abstracted from any specific implementation details regarding a file entry, and have several different file entries for different files or files groups.
author:
   kimchy
See Also:   org.apache.lucene.store.jdbc.JdbcDirectorySettings.registerFileEntrySettings(Stringorg.apache.lucene.store.jdbc.JdbcFileEntrySettings)

Method Summary
void close()
     Closes the file entry handler.
void configure(JdbcDirectory jdbcDirectory)
     Called after the entry is created (during the JdbcDirectory initialization process.
IndexOutput createOutput(String name)
     Creates an IndexOutput in order to write the file contents.
void deleteFile(String name)
     Deletes the given file name.
List deleteFiles(List names)
     Deletes a list of files.
boolean fileExists(String name)
     Checks if the file exists for the given file name.
long fileLength(String name)
     Returns the length of the file (in bytes).
long fileModified(String name)
     Returns the last modified date of the file.
IndexInput openInput(String name)
     Opens an IndexInput in order to read the file contents.
void renameFile(String from, String to)
     Renames the file entry from "from" to "to".
void touchFile(String name)
     Updates the last modified date of the file to the current time.

Method Detail
close
void close() throws IOException(Code)
Closes the file entry handler.
throws:
  IOException -

configure
void configure(JdbcDirectory jdbcDirectory)(Code)
Called after the entry is created (during the JdbcDirectory initialization process.

createOutput
IndexOutput createOutput(String name) throws IOException(Code)
Creates an IndexOutput in order to write the file contents.
Parameters:
  name - The name of the file An IndexOutput to write the file contents
throws:
  IOException -

deleteFile
void deleteFile(String name) throws IOException(Code)
Deletes the given file name.
Parameters:
  name - The name of the file to delete
throws:
  IOException -

deleteFiles
List deleteFiles(List names) throws IOException(Code)
Deletes a list of files. It must be verified by the caller that all files correlate to this file entry handler.
Parameters:
  names - The list of file names to delete List of files that were not deleted (or null if all were deleted)
throws:
  IOException -

fileExists
boolean fileExists(String name) throws IOException(Code)
Checks if the file exists for the given file name.
Parameters:
  name - The name of the file true of the file exists, false if it does not.
throws:
  IOException -

fileLength
long fileLength(String name) throws IOException(Code)
Returns the length of the file (in bytes).
Parameters:
  name - The name of the file The length of the file (in bytes)
throws:
  IOException -

fileModified
long fileModified(String name) throws IOException(Code)
Returns the last modified date of the file.
Parameters:
  name - The name of the file The last modified date in millis.
throws:
  IOException -

openInput
IndexInput openInput(String name) throws IOException(Code)
Opens an IndexInput in order to read the file contents.
Parameters:
  name - The name of the file An IndexInput in order to read the file contents.
throws:
  IOException -

renameFile
void renameFile(String from, String to) throws IOException(Code)
Renames the file entry from "from" to "to". The from entry is the one that maps to the actual file entry handler.
Parameters:
  from - The name to rename from
Parameters:
  to - The name to rename to
throws:
  IOException -

touchFile
void touchFile(String name) throws IOException(Code)
Updates the last modified date of the file to the current time.
Parameters:
  name - The name of the file
throws:
  IOException -

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