xxl.relational
Class SortBasedDistinct

java.lang.Object
  |
  +--xxl.relational.AbstractResultSet
        |
        +--xxl.relational.Distinct
              |
              +--xxl.relational.SortBasedDistinct
public class SortBasedDistinct
extends Distinct

Sort-based implementation of the operator "Distinct".

Example: 


	new SortBasedDistinct(resultSet);
It must be ensured that resultSet is already sorted by all columns. In other words: It must be totaly sorted.

Field Summary
protected  Tuple t
           
 
Fields inherited from class xxl.relational.Distinct
resultSet
 
Constructor Summary
SortBasedDistinct(java.sql.ResultSet resultSet)
           
 
Method Summary
 void close()
           
 byte[] getBytes(int columnIndex)
           
 java.lang.Object getObject(int columnIndex)
           
 boolean next()
           
 boolean wasNull()
           
 
Methods inherited from class xxl.relational.Distinct
findColumn, getMetaData
 
Methods inherited from class xxl.relational.AbstractResultSet
absolute, afterLast, beforeFirst, cancelRowUpdates, clearWarnings, deleteRow, first, getArray, getArray, getAsciiStream, getAsciiStream, getBigDecimal, getBigDecimal, getBigDecimal, getBigDecimal, getBinaryStream, getBinaryStream, getBlob, getBlob, getBoolean, getBoolean, getByte, getByte, getBytes, getCharacterStream, getCharacterStream, getClob, getClob, getColumnCount, getConcurrency, getCursorName, getDate, getDate, getDate, getDate, getDouble, getDouble, getFetchDirection, getFetchSize, getFloat, getFloat, getInt, getInt, getLong, getLong, getObject, getObject, getObject, getRef, getRef, getRow, getShort, getShort, getStatement, getString, getString, getTime, getTime, getTime, getTime, getTimestamp, getTimestamp, getTimestamp, getTimestamp, getType, getUnicodeStream, getUnicodeStream, getWarnings, insertRow, isAfterLast, isBeforeFirst, isFirst, isLast, last, moveToCurrentRow, moveToInsertRow, previous, refreshRow, relative, rowDeleted, rowInserted, rowUpdated, setFetchDirection, setFetchSize, updateAsciiStream, updateAsciiStream, updateBigDecimal, updateBigDecimal, updateBinaryStream, updateBinaryStream, updateBoolean, updateBoolean, updateByte, updateByte, updateBytes, updateBytes, updateCharacterStream, updateCharacterStream, updateDate, updateDate, updateDouble, updateDouble, updateFloat, updateFloat, updateInt, updateInt, updateLong, updateLong, updateNull, updateNull, updateObject, updateObject, updateObject, updateObject, updateRow, updateShort, updateShort, updateString, updateString, updateTime, updateTime, updateTimestamp, updateTimestamp
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

t

protected Tuple t
Constructor Detail

SortBasedDistinct

public SortBasedDistinct(java.sql.ResultSet resultSet)
Method Detail

next

public boolean next()
             throws java.sql.SQLException
Overrides:
next in class Distinct

getObject

public java.lang.Object getObject(int columnIndex)
                           throws java.sql.SQLException
Overrides:
getObject in class Distinct

getBytes

public byte[] getBytes(int columnIndex)
                throws java.sql.SQLException
Overrides:
getBytes in class Distinct

wasNull

public boolean wasNull()
                throws java.sql.SQLException
Overrides:
wasNull in class Distinct

close

public void close()
           throws java.sql.SQLException
Overrides:
close in class Distinct