org.jamel.dbf

Class DbfReader

java.lang.Object

org.jamel.dbf.DbfReader

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

public class DbfReader
extends java.lang.Object
implements java.io.Closeable

Dbf reader. This class is not thread safe.

See Also:

DBF specification

Field Summary

Fields

Modifier and Type	Field and Description
protected byte	DATA_DELETED
protected byte	DATA_ENDED

Constructor Summary

Constructors

Constructor and Description
DbfReader(java.io.File file)
DbfReader(java.io.File file, java.nio.charset.Charset charset)
DbfReader(java.io.InputStream in)
DbfReader(java.io.InputStream in, java.nio.charset.Charset charset)

Method Summary

Modifier and Type	Method and Description
boolean	canSeek()
void	close()
DbfHeader	getHeader()
int	getRecordCount()
java.lang.Object[]	nextRecord() Reads and returns the next row in the Dbf stream
DbfRow	nextRow()
protected java.lang.Object	readCharacterValue(DbfField field, byte[] buf)
protected java.util.Date	readDateValue(DbfField field, byte[] buf)
protected java.lang.Float	readFloatValue(DbfField field, byte[] buf)
protected java.lang.Boolean	readLogicalValue(DbfField field, byte[] buf)
protected java.lang.Number	readMemoLink(DbfField field, byte[] buf)
protected java.lang.Number	readNumericValue(DbfField field, byte[] buf)
void	seekToRecord(int n) Attempt to seek to a specified record index.

Methods inherited from class java.lang.Object

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

Field Detail

DATA_ENDED

protected final byte DATA_ENDED

See Also:

Constant Field Values

DATA_DELETED

protected final byte DATA_DELETED

See Also:

Constant Field Values

Constructor Detail

DbfReader

public DbfReader(java.io.File file)
          throws DbfException

Throws:

DbfException

DbfReader

public DbfReader(java.io.File file,
                 java.nio.charset.Charset charset)
          throws DbfException

Throws:

DbfException

DbfReader

public DbfReader(java.io.InputStream in)
          throws DbfException

Throws:

DbfException

DbfReader

public DbfReader(java.io.InputStream in,
                 java.nio.charset.Charset charset)
          throws DbfException

Throws:

DbfException

Method Detail

canSeek

public boolean canSeek()

Returns:

true if the reader can seek forward or backward to a specified record index, false otherwise.

seekToRecord

public void seekToRecord(int n)

Attempt to seek to a specified record index. If successful the record can be read by calling nextRecord().

Parameters:

n - The zero-based record index.

nextRow

public DbfRow nextRow()

nextRecord

public java.lang.Object[] nextRecord()

Reads and returns the next row in the Dbf stream

Returns:

The next row as an Object array.

readCharacterValue

protected java.lang.Object readCharacterValue(DbfField field,
                                              byte[] buf)
                                       throws java.io.IOException

Throws:

java.io.IOException

readDateValue

protected java.util.Date readDateValue(DbfField field,
                                       byte[] buf)
                                throws java.io.IOException

Throws:

java.io.IOException

readFloatValue

protected java.lang.Float readFloatValue(DbfField field,
                                         byte[] buf)
                                  throws java.io.IOException

Throws:

java.io.IOException

readLogicalValue

protected java.lang.Boolean readLogicalValue(DbfField field,
                                             byte[] buf)
                                      throws java.io.IOException

Throws:

java.io.IOException

readNumericValue

protected java.lang.Number readNumericValue(DbfField field,
                                            byte[] buf)
                                     throws java.io.IOException

Throws:

java.io.IOException

readMemoLink

protected java.lang.Number readMemoLink(DbfField field,
                                        byte[] buf)
                                 throws java.io.IOException

Throws:

java.io.IOException

getRecordCount

public int getRecordCount()

Returns:

the number of records in the Dbf.

getHeader

public DbfHeader getHeader()

Returns:

Dbf header info.

close

public void close()

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable