org.rhq.plugins.database
Class DatabaseQueryUtility

java.lang.Object
  org.rhq.plugins.database.DatabaseQueryUtility

public class DatabaseQueryUtility
extends Object

Author:

Greg Hinkle

Nested Class Summary

static class

DatabaseQueryUtility.StatementParameter

Constructor Summary

DatabaseQueryUtility()

Method Summary

static void	close(Statement statement, ResultSet resultSet)
static int	executeUpdate(DatabaseComponent databaseComponent, String query, Object... parameters)
static String[]	getColumns(ResultSetMetaData rsmd)
static Map<String,Double>	getNumericQueryValueMap(DatabaseComponent databaseComponent, String query, Object... parameters) Used to access a set of rows as key, value pairs where the key is the first column and is a string and the second is a value and is numeric
static Map<String,Double>	getNumericQueryValues(DatabaseComponent databaseComponent, String query, Object... parameters) Used to read a single row of columns into a map
static Double	getSingleNumericQueryValue(DatabaseComponent databaseComponent, String query, Object... parameters)

Methods inherited from class java.lang.Object

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

Constructor Detail

DatabaseQueryUtility

public DatabaseQueryUtility()

Method Detail

executeUpdate

public static int executeUpdate(DatabaseComponent databaseComponent,
                                String query,
                                Object... parameters)
                         throws SQLException

Throws:

SQLException

getSingleNumericQueryValue

public static Double getSingleNumericQueryValue(DatabaseComponent databaseComponent,
                                                String query,
                                                Object... parameters)

getNumericQueryValues

public static Map<String,Double> getNumericQueryValues(DatabaseComponent databaseComponent,
                                                       String query,
                                                       Object... parameters)

Used to read a single row of columns into a map

Parameters:

databaseComponent -

query -

parameters -

Returns:

getNumericQueryValueMap

public static Map<String,Double> getNumericQueryValueMap(DatabaseComponent databaseComponent,
                                                         String query,
                                                         Object... parameters)

Used to access a set of rows as key, value pairs where the key is the first column and is a string and the second is a value and is numeric

Parameters:

databaseComponent - the component to execute on

query - the sql query to run

parameters - any parameters to bind first

Returns:

a Map of the keys against the value

getColumns

public static String[] getColumns(ResultSetMetaData rsmd)
                           throws SQLException

Throws:

SQLException

close

public static void close(Statement statement,
                         ResultSet resultSet)