WKBReader (Geotools modules 33-SNAPSHOT API)

Object
- WKBReader

```
public class WKBReader
extends Object
```
Reads a Geometryfrom a byte stream in Postgis Extended Well-Known Binary format. Supports use of an InStream, which allows easy use with arbitrary byte stream sources.
This class reads the format describe in WKBWriter. It also partially handles the Extended WKB format used by PostGIS and SQLServer, by parsing and storing SRID values and supporting . The reader repairs structurally-invalid input (specifically, LineStrings and LinearRings which contain too few points have vertices added, and non-closed rings are closed).
This class is designed to support reuse of a single instance to read multiple geometries. This class is not thread-safe; each thread should create its own instance.

See Also:

for a formal format specification

Constructor Summary

Constructors
Constructor Description

WKBReader()

WKBReader(GeometryFactory geometryFactory)

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`static byte[]`	`hexToBytes(String hex)`	Converts a hexadecimal string to a byte array.
`Geometry`	`read(byte[] bytes)`	Reads a single `Geometry` in WKB format from a byte array.
`Geometry`	`read(InStream is)`	Reads a `Geometry` in binary WKB format from an `InStream`.
`protected Polygon`	`readCurvePolygon()`
`protected Geometry`	`readGeometry()`
`protected Geometry`	`readGeometry(int geometryType)`
`protected Polygon`	`readPolygon()`

Methods inherited from class Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WKBReader
```
public WKBReader()
```

WKBReader

public WKBReader(GeometryFactory geometryFactory)

Method Detail

hexToBytes
```
public static byte[] hexToBytes(String hex)
```
Converts a hexadecimal string to a byte array. The hexadecimal digit symbols are case-insensitive.

Parameters:

hex - a string containing hex digits

Returns:

an array of bytes with the value of the hex string

read
```
public Geometry read(byte[] bytes)
              throws ParseException
```
Reads a single Geometry in WKB format from a byte array.

Parameters:

bytes - the byte array to read from

Returns:

the geometry read

Throws:

ParseException - if the WKB is ill-formed

read
```
public Geometry read(InStream is)
              throws IOException,
                     ParseException
```
Reads a Geometry in binary WKB format from an InStream.

Parameters:

is - the stream to read from

Returns:

the Geometry read

Throws:

IOException - if the underlying stream creates an error

ParseException - if the WKB is ill-formed

readGeometry

protected Geometry readGeometry()
                         throws IOException,
                                ParseException

Throws:: IOException; ParseException

readGeometry

protected Geometry readGeometry(int geometryType)
                         throws IOException,
                                ParseException

Throws:: IOException; ParseException

readPolygon

protected Polygon readPolygon()
                       throws IOException,
                              ParseException

Throws:: IOException; ParseException

readCurvePolygon

protected Polygon readCurvePolygon()
                            throws IOException,
                                   ParseException

Throws:: IOException; ParseException