Class DefaultRowReaderFactory

java.lang.Object

org.apache.cayenne.access.jdbc.reader.DefaultRowReaderFactory

All Implemented Interfaces:

RowReaderFactory

public class DefaultRowReaderFactory
extends Object
implements RowReaderFactory

Creates row readers for one executed statement. The readers of one rowReader(RSColumn[], ResultSegments, QueryMetadata, DbAdapter) call share a snapshot version, taken when the call is made, i.e. after the statement has executed, so all DataRows read from one result set carry the same version.

Since:

4.0

Constructor Summary

Constructors

Constructor	Description
DefaultRowReaderFactory()

Method Summary

Modifier and Type	Method	Description
protected RowReader<?>	entitySegmentReader(RSColumn[] columns, QueryMetadata metadata, EntityResultSegment segment, long version)
protected RowReader<?>	noSegmentReader(RSColumn[] columns, QueryMetadata metadata, long version)
RowReader<?>	rowReader(RSColumn[] columns, ResultSegments segments, QueryMetadata metadata, DbAdapter adapter)
protected RowReader<?>	scalarSegmentReader(RSColumn[] columns, QueryMetadata metadata, ScalarResultSegment segment)

Methods inherited from class Object

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

Constructor Details

DefaultRowReaderFactory

public DefaultRowReaderFactory()

Method Details

rowReader

public RowReader<?> rowReader(RSColumn[] columns,
 ResultSegments segments,
 QueryMetadata metadata,
 DbAdapter adapter)

Specified by:

rowReader in interface RowReaderFactory

scalarSegmentReader

protected RowReader<?> scalarSegmentReader(RSColumn[] columns,
 QueryMetadata metadata,
 ScalarResultSegment segment)

entitySegmentReader

protected RowReader<?> entitySegmentReader(RSColumn[] columns,
 QueryMetadata metadata,
 EntityResultSegment segment,
 long version)

Parameters:

version - the snapshot version of the rows the reader produces

Since:

5.0

noSegmentReader

protected RowReader<?> noSegmentReader(RSColumn[] columns,
 QueryMetadata metadata,
 long version)

Parameters:

version - the snapshot version of the rows the reader produces

Since:

5.0