fr.cnes.sitools.dataset.database.jdbc
Class SQLRangeDatabaseRequest

java.lang.Object
  fr.cnes.sitools.dataset.database.jdbc.SQLDatabaseRequest
      fr.cnes.sitools.dataset.database.jdbc.SQLRangeDatabaseRequest

All Implemented Interfaces:

DatabaseRequest

public class SQLRangeDatabaseRequest
extends SQLDatabaseRequest

Execute a request for some records specified by a List of ranges

Author:

m.gond

Constructor Summary

SQLRangeDatabaseRequest(DatabaseRequestParameters params)
Create a new SQLRangeDatabaseRequest with the given DatabaseRequestParameters

Method Summary

int	calculateTotalCountFromBase() Compute from the database the number of Records in the current request
void	createDistinctRequest() Create a SQL Distinct request
void	createRequest() Create a Request
int	getCount() Get the number of results in the current request for pagination purpose
int	getTotalCount() get the number of records in the current request
boolean	nextResult() Move the cursor on the next result.

Methods inherited from class fr.cnes.sitools.dataset.database.jdbc.SQLDatabaseRequest

buildURI, checkRequest, close, getDistinctRequestAsString, getMaxResultsToSend, getPageSize, getPrimaryKeys, getRecord, getRequestAsString, getSelectedPrimaryKey, getStartIndex, isCountDone, isLastResult, setAttributeValues, setMaxResultsToSend

Methods inherited from class java.lang.Object

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

Constructor Detail

SQLRangeDatabaseRequest

public SQLRangeDatabaseRequest(DatabaseRequestParameters params)

Create a new SQLRangeDatabaseRequest with the given DatabaseRequestParameters

Parameters:

params - the DatabaseRequestParameters

Method Detail

createRequest

public final void createRequest()
                         throws SitoolsException

Description copied from interface: DatabaseRequest

Create a Request

Specified by:

createRequest in interface DatabaseRequest

Overrides:

createRequest in class SQLDatabaseRequest

Throws:

SitoolsException - when request fails

createDistinctRequest

public void createDistinctRequest()
                           throws SitoolsException

Description copied from interface: DatabaseRequest

Create a SQL Distinct request

Specified by:

createDistinctRequest in interface DatabaseRequest

Overrides:

createDistinctRequest in class SQLDatabaseRequest

Throws:

SitoolsException - when occurs

nextResult

public final boolean nextResult()
                         throws SitoolsException

Description copied from interface: DatabaseRequest

Move the cursor on the next result.

Specified by:

nextResult in interface DatabaseRequest

Overrides:

nextResult in class SQLDatabaseRequest

Returns:

true if the new current row is valid; false if there are no more rows

Throws:

SitoolsException - if a database access error occurs or this method is called on a closed result set

getTotalCount

public int getTotalCount()

Description copied from interface: DatabaseRequest

get the number of records in the current request

Specified by:

getTotalCount in interface DatabaseRequest

Overrides:

getTotalCount in class SQLDatabaseRequest

Returns:

the number of records in the current request

getCount

public int getCount()

Description copied from interface: DatabaseRequest

Get the number of results in the current request for pagination purpose

Specified by:

getCount in interface DatabaseRequest

Overrides:

getCount in class SQLDatabaseRequest

Returns:

the number of results in the current request for pagination purpose

calculateTotalCountFromBase

public int calculateTotalCountFromBase()
                                throws SitoolsException

Description copied from interface: DatabaseRequest

Compute from the database the number of Records in the current request

Specified by:

calculateTotalCountFromBase in interface DatabaseRequest

Overrides:

calculateTotalCountFromBase in class SQLDatabaseRequest

Returns:

the number of total results or 0 if it cannot perform the request

Throws:

SitoolsException - if a database access error occurs or this method is called on a closed result set