org.gjt.rec.jdbc
Class QueryResults

java.lang.Object
  |
  +--org.gjt.rec.jdbc.QueryResults

All Implemented Interfaces:

Serializable

public final class QueryResults

extends Object

implements Serializable

A disconnected JDBC result set. Feed it a ResultSet, close the ResultSet, then access the data that has been copied out of the ResultSet in a random access (rather than serial) manner, or squirt it down the wire to another tier.

See Also:

Serialized Form

Nested Class Summary

static class

QueryResults.QueryResultImpl The implementation of QueryResult.

Field Summary

static String	COPYRIGHT
static String	LICENSE
static String	REVISION

Constructor Summary

QueryResults(ResultSet resultSet)
Constructs a new QueryResults from a particular ResultSet.

Method Summary

QueryResult	get(int index) Looks up the QueryResult at a particular index in the results.
int	getColumnCount() Determines the number of columns in this QueryResults.
String	getColumnName(int columnIndex) Looks up the name of the column at a particular column index.
boolean	isEmpty() Determines if this QueryResults is empty or not.
int	size() Determines the number of elements in this QueryResults.

Methods inherited from class java.lang.Object

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

Field Detail

COPYRIGHT

public static final String COPYRIGHT

See Also:

Constant Field Values

LICENSE

public static final String LICENSE

See Also:

Constant Field Values

REVISION

public static final String REVISION

See Also:

Constant Field Values

Constructor Detail

QueryResults

public QueryResults(ResultSet resultSet)
             throws SQLException

Constructs a new QueryResults from a particular ResultSet. Note: This method does not close the ResultSet.

Parameters:

resultSet - the result set from which to take the data

Throws:

NullPointerException - if (resultSet) is null

SQLException

Method Detail

getColumnCount

public int getColumnCount()

Determines the number of columns in this QueryResults.

Returns:

the number of columns in this QueryResults

getColumnName

public String getColumnName(int columnIndex)

Looks up the name of the column at a particular column index.

Parameters:

columnIndex - the index at which to look for the desired column

Returns:

the name of the column at the specified column index

Throws:

IndexOutOfBoundsException - if (columnIndex) is out of range (columnIndex < 0 || getColumnCount() <= columnIndex)

isEmpty

public boolean isEmpty()

Determines if this QueryResults is empty or not.

Returns:

true if this QueryResults is empty, false otherwise

size

public int size()

Determines the number of elements in this QueryResults.

Returns:

the number of elements in this QueryResults

get

public QueryResult get(int index)

Looks up the QueryResult at a particular index in the results.

Parameters:

index - the index at which to look for the desired QueryResult

Returns:

the QueryResult at the specified index

Throws:

IndexOutOfBoundsException - if the index is out of range (index < 0 || size() <= index)