xxl.relational
Class Union

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

The operator for union (without duplicate removal).

Two ResultSets are united in one ResultSet by sequentially reading them.

If the given ResultSets differ in number of columns or in any column name or type an IllegalArgumentException will be thrown.

Field Summary
protected  java.sql.ResultSetMetaData metaData
           
protected  java.sql.ResultSet r1
           
protected  boolean r1Next
           
protected  java.sql.ResultSet r2
           
 
Constructor Summary
Union(java.sql.ResultSet r1, java.sql.ResultSet r2)
           
 
Method Summary
 void close()
           
 int findColumn(java.lang.String columnName)
           
 byte[] getBytes(int columnIndex)
           
 java.sql.ResultSetMetaData getMetaData()
           
 java.lang.Object getObject(int columnIndex)
           
 boolean next()
           
 boolean wasNull()
           
 
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

r1

protected java.sql.ResultSet r1

r2

protected java.sql.ResultSet r2

metaData

protected java.sql.ResultSetMetaData metaData

r1Next

protected boolean r1Next
Constructor Detail

Union

public Union(java.sql.ResultSet r1,
             java.sql.ResultSet r2)
Method Detail

next

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

getObject

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

getBytes

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

wasNull

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

findColumn

public int findColumn(java.lang.String columnName)
               throws java.sql.SQLException
Overrides:
findColumn in class AbstractResultSet

getMetaData

public java.sql.ResultSetMetaData getMetaData()
                                       throws java.sql.SQLException
Overrides:
getMetaData in class AbstractResultSet

close

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