org.wso2.extension.siddhi.execution.rdbms.util

Class RDBMSStreamProcessorUtil

java.lang.Object

org.wso2.extension.siddhi.execution.rdbms.util.RDBMSStreamProcessorUtil

public class RDBMSStreamProcessorUtil
extends Object

Util class.

Constructor Summary

Constructors

Constructor and Description
RDBMSStreamProcessorUtil()

Method Summary

Modifier and Type	Method and Description
static void	cleanupConnection(ResultSet rs, Statement stmt, Connection conn) Method which can be used to clear up and ephemeral SQL connectivity artifacts.
static com.zaxxer.hikari.HikariDataSource	getDataSourceService(String dataSourceName) Utility class to get the datasource service
static void	populateStatementWithSingleElement(PreparedStatement stmt, int ordinal, org.wso2.siddhi.query.api.definition.Attribute.Type type, Object value) Util method which is used to populate a PreparedStatement instance with a single element.
static Object[]	processRecord(List<org.wso2.siddhi.query.api.definition.Attribute> attributeList, ResultSet rs) Convert a record in result set to object array.
static boolean	queryContainsCheck(boolean isRetrievalQuery, String query) Utility function for validating the query.
static String	validateDatasourceName(org.wso2.siddhi.core.executor.ExpressionExecutor attributeExpressionExecutor) The datasource parameter is validated

Methods inherited from class java.lang.Object

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

Constructor Detail

RDBMSStreamProcessorUtil

public RDBMSStreamProcessorUtil()

Method Detail

cleanupConnection

public static void cleanupConnection(ResultSet rs,
                                     Statement stmt,
                                     Connection conn)

Method which can be used to clear up and ephemeral SQL connectivity artifacts.

Parameters:

rs - ResultSet instance (can be null)

stmt - Statement instance (can be null)

conn - Connection instance (can be null)

processRecord

public static Object[] processRecord(List<org.wso2.siddhi.query.api.definition.Attribute> attributeList,
                                     ResultSet rs)
                              throws SQLException

Convert a record in result set to object array.

Parameters:

attributeList - List of attributes

rs - Result set

Returns:

Object array

Throws:

SQLException - this is thrown when an error occurs when accessing the result set.

queryContainsCheck

public static boolean queryContainsCheck(boolean isRetrievalQuery,
                                         String query)

Utility function for validating the query.

Parameters:

isRetrievalQuery - Is it a retrieval query

query - Query that is to be validated

Returns:

true when query has unauthorised operations

validateDatasourceName

public static String validateDatasourceName(org.wso2.siddhi.core.executor.ExpressionExecutor attributeExpressionExecutor)

The datasource parameter is validated

Parameters:

attributeExpressionExecutor - Function parameter Attribute Expression Executor

Returns:

Datasource name

getDataSourceService

public static com.zaxxer.hikari.HikariDataSource getDataSourceService(String dataSourceName)

Utility class to get the datasource service

Parameters:

dataSourceName - The datasource name

Returns:

Hikari Data Source

populateStatementWithSingleElement

public static void populateStatementWithSingleElement(PreparedStatement stmt,
                                                      int ordinal,
                                                      org.wso2.siddhi.query.api.definition.Attribute.Type type,
                                                      Object value)
                                               throws SQLException

Util method which is used to populate a PreparedStatement instance with a single element.

Parameters:

stmt - the statement to which the element should be set.

ordinal - the ordinal of the element in the statement (its place in a potential list of places).

type - the type of the element to be set, adheres to Attribute.Type.

value - the value of the element.

Throws:

SQLException - if there are issues when the element is being set.