org.geotools.data

Interface AttributeWriter

All Known Implementing Classes:

JoiningAttributeWriter

public interface AttributeWriter

- Added hasNext to support the FeatureWriter API. - Changed order of writer parameters to match Collections, JDBC API. - Added IOExceptions on all methods. - Do we want AttributeWriters to know about the schema and perform validation??

Author:

Ian Schneider, Sean Geoghegan, Defence Science and Technology Organisation.

Method Summary

Modifier and Type	Method and Description
void	close()
int	getAttributeCount() The number of attributes this reader can read, i.e the length of a row.
AttributeDescriptor	getAttributeType(int i) Retrieve the AttributeType at the given index.
boolean	hasNext() Query whether there are other rows in the attribute writer.
void	next() Advance the AttributeWriter, all calls to write will correspond to the same set of attributes until next is called again.
void	write(int position, Object attribute) Write the given attribute value at the position indicated.

Method Detail

getAttributeCount

int getAttributeCount()

The number of attributes this reader can read, i.e the length of a row.

getAttributeType

AttributeDescriptor getAttributeType(int i)
                              throws ArrayIndexOutOfBoundsException

Retrieve the AttributeType at the given index.

Throws:

ArrayIndexOutOfBoundsException

next

void next()
   throws IOException

Advance the AttributeWriter, all calls to write will correspond to the same set of attributes until next is called again.

Throws:

IOException

write

void write(int position,
           Object attribute)
    throws IOException

Write the given attribute value at the position indicated. Implementations can choose to immediately flush the write or buffer it.

Throws:

IOException

close

void close()
    throws IOException

Throws:

IOException

hasNext

boolean hasNext()
         throws IOException

Query whether there are other rows in the attribute writer.

Throws:

IOException

See Also:

FeatureWriter.hasNext()