Package com.vividsolutions.jump.datastore.spatialdatabases

Class SpatialDatabasesFeatureInputStream

java.lang.Object

com.vividsolutions.jump.io.BaseFeatureInputStream

com.vividsolutions.jump.datastore.spatialdatabases.SpatialDatabasesFeatureInputStream

All Implemented Interfaces:

FeatureInputStream

Direct Known Subclasses:

H2FeatureInputStream, MariadbFeatureInputStream, OracleFeatureInputStream, PostgisFeatureInputStream, SpatialiteFeatureInputStream

public class SpatialDatabasesFeatureInputStream
extends BaseFeatureInputStream

Reads features from a Spatial database.

Field Summary

Fields

Modifier and Type	Field	Description
protected Connection	conn
protected FeatureSchema	featureSchema
protected String	queryString

Constructor Summary

Constructors

Constructor	Description
SpatialDatabasesFeatureInputStream(Connection conn, String queryString)
SpatialDatabasesFeatureInputStream(Connection conn, String queryString, String externalIdentifier)

Method Summary

Modifier and Type	Method	Description
void	close()
Connection	getConnection()
FeatureSchema	getFeatureSchema()
String	getQueryString()
protected SpatialDatabasesResultSetConverter	getResultSetConverter(ResultSet rs)	To overload
Statement	getStatement()
protected Feature	readNext()	Read the next feature, if any.

Methods inherited from class com.vividsolutions.jump.io.BaseFeatureInputStream

hasNext, next

Methods inherited from class java.lang.Object

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

Field Detail

featureSchema

protected FeatureSchema featureSchema

conn

protected Connection conn

queryString

protected String queryString

Constructor Detail

SpatialDatabasesFeatureInputStream

public SpatialDatabasesFeatureInputStream(Connection conn,
                                          String queryString)

SpatialDatabasesFeatureInputStream

public SpatialDatabasesFeatureInputStream(Connection conn,
                                          String queryString,
                                          String externalIdentifier)

Method Detail

getConnection

public Connection getConnection()

Returns:

The underlaying Connection.

getQueryString

public String getQueryString()

Returns:

the underlaying query String

getResultSetConverter

protected SpatialDatabasesResultSetConverter getResultSetConverter(ResultSet rs)

To overload

Parameters:

rs - a ResultSet

Returns:

the SpatialDatabasesResultSetConverter to be used

getStatement

public Statement getStatement()

Returns:

The underlaying Statement. Useful to cancel the query on the server if the PlugIn is interrupted

readNext

protected Feature readNext()
                    throws Exception

Description copied from class: BaseFeatureInputStream

Read the next feature, if any.

Specified by:

readNext in class BaseFeatureInputStream

Returns:

the next Feature, or null if there is none

Throws:

Exception - if an exception occured while reading next Feature

close

public void close()
           throws SQLException

Specified by:

close in interface FeatureInputStream

Specified by:

close in class BaseFeatureInputStream

Throws:

SQLException

getFeatureSchema

public FeatureSchema getFeatureSchema()

Specified by:

getFeatureSchema in interface FeatureInputStream

Specified by:

getFeatureSchema in class BaseFeatureInputStream