Package org.apache.sedona.core.formatMapper.shapefileParser.parseUtils.dbf

Class DbfParseUtil

java.lang.Object

org.apache.sedona.core.formatMapper.shapefileParser.parseUtils.dbf.DbfParseUtil

All Implemented Interfaces:

ShapeFileConst

public class DbfParseUtil
extends Object
implements ShapeFileConst

Field Summary

Fields

Modifier and Type	Field	Description
int	numBytesRecord	number of bytes per record
int	numRecord	number of record get from header
int	numRecordRead	number of records already read.

Fields inherited from interface org.apache.sedona.core.formatMapper.shapefileParser.parseUtils.shp.ShapeFileConst

DOUBLE_LENGTH, EXPECT_FILE_CODE, EXPECT_FILE_VERSION, FIELD_DESCRIPTOR_TERMINATOR, FIELD_NAME_LENGTH, FILE_END_FLAG, HEAD_BOX_NUM, HEAD_EMPTY_NUM, HEAD_FILE_LENGTH_16BIT, INT_LENGTH, RECORD_DELETE_FLAG, RECORD_EXIST_FLAG

Constructor Summary

Constructors

Constructor	Description
DbfParseUtil()

Method Summary

Modifier and Type	Method	Description
static String	fieldBytesToString(List<byte[]> fieldBytesList)	abstract attributes from primitive bytes according to field descriptors.
List<FieldDescriptor>	getFieldDescriptors()
float	getProgress()
boolean	isDone()
List<byte[]>	parse(DataInputStream inputStream)	Parse the next record in the .dbf file
void	parseFileHead(DataInputStream inputStream)	parse header of .dbf file and draw information for next step

Methods inherited from class java.lang.Object

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

Field Details

numRecord

public int numRecord

number of record get from header

numBytesRecord

public int numBytesRecord

number of bytes per record

numRecordRead

public int numRecordRead

number of records already read. Records that is ignored also counted in

Constructor Details

DbfParseUtil

public DbfParseUtil()

Method Details

isDone

public boolean isDone()

getProgress

public float getProgress()

getFieldDescriptors

public List<FieldDescriptor> getFieldDescriptors()

parseFileHead

public void parseFileHead(DataInputStream inputStream)
                   throws IOException

parse header of .dbf file and draw information for next step

Parameters:

inputStream -

Throws:

IOException

parse

public List<byte[]> parse(DataInputStream inputStream)
                   throws IOException

Parse the next record in the .dbf file

Parameters:

inputStream - input stream of .dbf file

Returns:

a list of fields as their original representation in the dbf file

Throws:

IOException - if an I/O error occurs

fieldBytesToString

public static String fieldBytesToString(List<byte[]> fieldBytesList)

abstract attributes from primitive bytes according to field descriptors.

Parameters:

fieldBytesList - a list of primitive bytes

Returns:

string attributes delimited by '\t'