org.geotools.data
Interface AttributeWriter

All Known Implementing Classes:
JoiningAttributeWriter, PropertyAttributeWriter, QueryData

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.
Module:

Method Summary
 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()


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