org.xBaseJ.indexes
Class NDX

java.lang.Object
  org.xBaseJ.indexes.Index
      org.xBaseJ.indexes.NDX

public class NDX

extends Index

Field Summary

Fields inherited from class org.xBaseJ.indexes.Index

activeKey, bytebuffer, channel, database, dosname, file, findAnyKey, findFirstMatchingKey, foundExact, foundMatchingKeyButNotRecord, key_definition, key_entry_size, key_length, key_per_Node, keyControl, keyNotFound, keyType, next_available, nfile, record, reserved_01, reserved_02, reserved_03, reserved_04, stringKey, top_Node, topNode, unique_key, workNode

Constructor Summary

NDX()

NDX(String filename, DBF indatabase, char readonly)

NDX(String name, String NDXString, DBF indatabase, boolean destroy, boolean unique)
creates a NDX object and NDX file

Method Summary

int	add_entry(NodeKey NDXkey, int recno)
void	anchor_read()
void	anchor_write()
void	bIndex()
void	close()
void	del_entry(Node inNode)
int	find_entry(NodeKey findKey)
int	find_entry(NodeKey findKey, int rec)
int	find_entry(NodeKey findKey, Node aNode, int findrec)
int	get_next_key()
int	get_prev_key()
void	redo_numbers()
void	reIndex()
void	reIndex2()

Methods inherited from class org.xBaseJ.indexes.Index

add_entry, build_key, buildKey, check_for_duplicates, compareKey, didFindFindExact, find_entry, find_entry, get_active_key, getKeyFields, getName, is_unique_key, position_at_first, position_at_last, set_active_key, set_key_definition, update

Methods inherited from class java.lang.Object

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

Constructor Detail

NDX

public NDX()

NDX

public NDX(String filename,
           DBF indatabase,
           char readonly)
    throws IOException,
           xBaseJException

NDX

public NDX(String name,
           String NDXString,
           DBF indatabase,
           boolean destroy,
           boolean unique)
    throws xBaseJException,
           IOException

creates a NDX object and NDX file

Parameters:

name - Index file name , can be full or partial pathname

NDXString - database Fields that define the Index, join Fields with "+" do not use spaces

indatabase - DBF object to be associated with

destroy - permission to destroy file if it exists

unique - unique flag indicator

Throws:

IOException - exception thrown by calling methods

xBaseJException - most likely cause - file not found

Method Detail

close

public void close()
           throws IOException

Throws:

IOException

find_entry

public int find_entry(NodeKey findKey)
               throws xBaseJException,
                      IOException

Specified by:

find_entry in class Index

Throws:

xBaseJException

IOException

find_entry

public int find_entry(NodeKey findKey,
                      int rec)
               throws xBaseJException,
                      IOException

Specified by:

find_entry in class Index

Throws:

xBaseJException

IOException

find_entry

public int find_entry(NodeKey findKey,
                      Node aNode,
                      int findrec)
               throws xBaseJException,
                      IOException

Throws:

xBaseJException

IOException

bIndex

public void bIndex()
            throws xBaseJException,
                   IOException

Throws:

xBaseJException

IOException

reIndex2

public void reIndex2()
              throws xBaseJException,
                     IOException

Throws:

xBaseJException

IOException

reIndex

public void reIndex()
             throws xBaseJException,
                    IOException

Specified by:

reIndex in class Index

Throws:

xBaseJException

IOException

add_entry

public int add_entry(NodeKey NDXkey,
                     int recno)
              throws xBaseJException,
                     IOException

Specified by:

add_entry in class Index

Throws:

xBaseJException

IOException

del_entry

public void del_entry(Node inNode)
               throws IOException,
                      xBaseJException

Specified by:

del_entry in class Index

Throws:

IOException

xBaseJException

get_next_key

public int get_next_key()
                 throws xBaseJException,
                        IOException

Specified by:

get_next_key in class Index

Throws:

xBaseJException

IOException

get_prev_key

public int get_prev_key()
                 throws xBaseJException,
                        IOException

Specified by:

get_prev_key in class Index

Throws:

xBaseJException

IOException

anchor_read

public void anchor_read()
                 throws IOException

Throws:

IOException

anchor_write

public void anchor_write()
                  throws IOException

Throws:

IOException

redo_numbers

public void redo_numbers()