Package nl.cwi.monetdb.embedded.env

Class AbstractConnectionResult

java.lang.Object

nl.cwi.monetdb.embedded.env.AbstractConnectionResult

All Implemented Interfaces:

Closeable, AutoCloseable

Direct Known Subclasses:

MonetDBEmbeddedPreparedStatement, MonetDBTable, QueryResultSet

public abstract class AbstractConnectionResult
extends Object
implements Closeable

The base class for a pending statement to a connection.

Author:

Pedro Ferreira

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	AbstractConnectionResult(MonetDBEmbeddedConnection connection)

Method Summary

Modifier and Type	Method	Description
protected void	checkMetadataArrayLength(Object input)	Checks the length of an input array for metadata retrieval
void	close()	Close the result set.
protected abstract void	closeResultImplementation()	Close the result set internally.
protected void	finalize()	Overriding the finalize method to clean the result set.
abstract void	getColumnDigits(int[] input)	Gets the column digits as an integer array.
abstract void	getColumnNames(String[] input)	Gets the columns names as a string array.
abstract void	getColumnScales(int[] input)	Gets the column scales as an integer array.
abstract void	getColumnTypes(String[] input)	Gets the columns types as a string array.
MonetDBEmbeddedConnection	getConnection()	Gets the corresponding connection to this statement result.
abstract void	getMappings(MonetDBToJavaMapping[] input)	Gets the Java mappings as a MonetDBToJavaMapping array.
abstract int	getNumberOfColumns()	Returns the number of columns in the result set.
abstract int	getNumberOfRows()	Returns the number of rows in the result set.
protected long	getRandomIdentifier()	Gets a long number randomly generated, used to identify the result set.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractConnectionResult

protected AbstractConnectionResult(MonetDBEmbeddedConnection connection)

Method Detail

getConnection

public MonetDBEmbeddedConnection getConnection()

Gets the corresponding connection to this statement result.

Returns:

A MonetDBEmbeddedConnection instance

getNumberOfColumns

public abstract int getNumberOfColumns()

Returns the number of columns in the result set.

Returns:

Number of columns

getNumberOfRows

public abstract int getNumberOfRows()

Returns the number of rows in the result set.

Returns:

Number of rows

getRandomIdentifier

protected long getRandomIdentifier()

Gets a long number randomly generated, used to identify the result set.

Returns:

A random long identifier

checkMetadataArrayLength

protected void checkMetadataArrayLength(Object input)

Checks the length of an input array for metadata retrieval

Parameters:

input - - An array to check its bounds

getColumnNames

public abstract void getColumnNames(String[] input)
                             throws MonetDBEmbeddedException

Gets the columns names as a string array.

Parameters:

input - The columns names array to fill.

Throws:

MonetDBEmbeddedException - If an error in the database occurred.

getColumnTypes

public abstract void getColumnTypes(String[] input)
                             throws MonetDBEmbeddedException

Gets the columns types as a string array.

Parameters:

input - The columns types array to fill.

Throws:

MonetDBEmbeddedException - If an error in the database occurred.

getMappings

public abstract void getMappings(MonetDBToJavaMapping[] input)
                          throws MonetDBEmbeddedException

Gets the Java mappings as a MonetDBToJavaMapping array.

Parameters:

input - The columns mappings array to fill.

Throws:

MonetDBEmbeddedException - If an error in the database occurred..

getColumnDigits

public abstract void getColumnDigits(int[] input)
                              throws MonetDBEmbeddedException

Gets the column digits as an integer array.

Parameters:

input - The columns digits array to fill.

Throws:

MonetDBEmbeddedException - If an error in the database occurred.

getColumnScales

public abstract void getColumnScales(int[] input)
                              throws MonetDBEmbeddedException

Gets the column scales as an integer array.

Parameters:

input - The columns scales array to fill.

Throws:

MonetDBEmbeddedException - If an error in the database occurred.

close

public void close()

Close the result set.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

closeResultImplementation

protected abstract void closeResultImplementation()

Close the result set internally.

finalize

protected void finalize()
                 throws Throwable

Overriding the finalize method to clean the result set.

Overrides:

finalize in class Object

Throws:

Throwable