com.healthmarketscience.jackcess.impl

Class IndexData.EntryCursor

java.lang.Object

com.healthmarketscience.jackcess.impl.IndexData.EntryCursor

Enclosing class:

IndexData

public final class IndexData.EntryCursor
extends Object

Utility class to traverse the entries in the Index. Remains valid in the face of index entry modifications.

Method Summary

Modifier and Type	Method and Description
void	afterEntry(Object[] row) Repositions the cursor so that the previous row will be the first entry <= the given row.
void	afterLast()
void	beforeEntry(Object[] row) Repositions the cursor so that the next row will be the first entry >= the given row.
void	beforeFirst()
IndexData.Entry	getFirstEntry() Returns the first entry (exclusive) as defined by this cursor.
IndexData	getIndexData()
IndexData.Entry	getLastEntry() Returns the last entry (exclusive) as defined by this cursor.
IndexData.Entry	getNextEntry()
IndexData.Entry	getPreviousEntry()
boolean	isUpToDate() Returns true if this cursor is up-to-date with respect to its index.
void	reset()
String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

getIndexData

public IndexData getIndexData()

getFirstEntry

public IndexData.Entry getFirstEntry()

Returns the first entry (exclusive) as defined by this cursor.

getLastEntry

public IndexData.Entry getLastEntry()

Returns the last entry (exclusive) as defined by this cursor.

isUpToDate

public boolean isUpToDate()

Returns true if this cursor is up-to-date with respect to its index.

reset

public void reset()

beforeFirst

public void beforeFirst()

afterLast

public void afterLast()

beforeEntry

public void beforeEntry(Object[] row)
                 throws IOException

Repositions the cursor so that the next row will be the first entry >= the given row.

Throws:

IOException

afterEntry

public void afterEntry(Object[] row)
                throws IOException

Repositions the cursor so that the previous row will be the first entry <= the given row.

Throws:

IOException

getNextEntry

public IndexData.Entry getNextEntry()
                             throws IOException

Returns:

valid entry if there was a next entry, #getLastEntry otherwise

Throws:

IOException

getPreviousEntry

public IndexData.Entry getPreviousEntry()
                                 throws IOException

Returns:

valid entry if there was a next entry, #getFirstEntry otherwise

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object