Package org.dbunit.database

Class InMemoryMetadataResultSet

java.lang.Object

org.dbunit.database.InMemoryMetadataResultSet

All Implemented Interfaces:

InvocationHandler

public final class InMemoryMetadataResultSet
extends Object
implements InvocationHandler

An in-memory ResultSet, backed by rows copied out of one or more source result sets ahead of time. It supports only the handful of ResultSet/ResultSetMetaData methods dbunit itself calls against an IMetadataHandler result - next(), getString(int/String), getInt(int/String), getMetaData()/ getColumnCount(), close(), plus equals()/hashCode()/ toString() for safe use as a log argument or map key - since implementing the rest of ResultSet's ~150 methods would serve no caller. Any other method throws UnsupportedOperationException.

A single instance answers both ResultSet calls and, since getMetaData() returns the proxy itself, the ResultSetMetaData calls made against its result.

Since:

3.5.0

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	InMemoryMetadataResultSet.RowFilter	Tests whether a source result set's current row, as positioned by a preceding ResultSet.next(), should be kept.

Method Summary

Modifier and Type	Method	Description
static ResultSet	filter(ResultSet source, InMemoryMetadataResultSet.RowFilter filter)	Copies the rows of the given result set that match the given filter, closing it as it is consumed, and returns a filtered ResultSet positioned before the first row.
Object	invoke(Object proxy, Method method, Object[] args)	Answers exactly the methods documented on this class; any other method throws UnsupportedOperationException.
static ResultSet	merge(List<ResultSet> sources)	Copies every row of each given result set, closing each as it is consumed, and returns a single merged ResultSet positioned before the first row.

Methods inherited from class java.lang.Object

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

Method Details

merge

public static ResultSet merge(List<ResultSet> sources)
                       throws SQLException

Copies every row of each given result set, closing each as it is consumed, and returns a single merged ResultSet positioned before the first row.

Parameters:

sources - The result sets to merge, in the order their rows should appear.

Returns:

The merged result set.

Throws:

SQLException - if a source result set cannot be read.

filter

public static ResultSet filter(ResultSet source,
 InMemoryMetadataResultSet.RowFilter filter)
                        throws SQLException

Copies the rows of the given result set that match the given filter, closing it as it is consumed, and returns a filtered ResultSet positioned before the first row.

Parameters:

source - The result set to filter.

filter - The filter a row must match to be kept.

Returns:

The filtered result set.

Throws:

SQLException - if the source result set cannot be read.

invoke

public Object invoke(Object proxy,
 Method method,
 Object[] args)

Answers exactly the methods documented on this class; any other method throws UnsupportedOperationException.

Specified by:

invoke in interface InvocationHandler