com.groiss.reporting.engine
Class QueryEngine

java.lang.Object
  com.groiss.reporting.engine.QueryEngine

All Implemented Interfaces:

Public

public class QueryEngine
extends java.lang.Object
implements Public

Constructor Summary

QueryEngine()

Method Summary

static void	abort(java.lang.String query_id) Aborts a query execution
static Pair	execute(Query q)
static Pair	execute(Query q, java.lang.String query_id) Executes a query Object
static void	executeQuery(javax.servlet.http.HttpServletRequest r, javax.servlet.http.HttpServletResponse res)
static void	executeQuery(MultipartRequest req, javax.servlet.http.HttpServletResponse res)
static java.lang.String	generateQueryId() returns a generated query ID
static ReportingData	getReportingDataObject(org.jdom.Element e)
static ReportingData	getReportingDataObject(java.lang.String entity, java.lang.String attribute)
static boolean	hasStatRight(User u)
static boolean	isOracle()
static void	outputTableModel(javax.servlet.http.HttpServletResponse res, javax.swing.table.TableModel tm, Query q) Outputs the query result using the exporter of the query
static org.jdom.Document	parseXMLQuery(java.lang.String queryStr) Parses a XML String

Methods inherited from class java.lang.Object

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

Constructor Detail

QueryEngine

public QueryEngine()

Method Detail

hasStatRight

public static boolean hasStatRight(User u)

Parameters:

u -

Returns:

true if the user has the right statistic

executeQuery

public static void executeQuery(javax.servlet.http.HttpServletRequest r,
                                javax.servlet.http.HttpServletResponse res)
                         throws java.lang.Exception

Throws:

java.lang.Exception

executeQuery

public static void executeQuery(MultipartRequest req,
                                javax.servlet.http.HttpServletResponse res)
                         throws java.lang.Exception

Throws:

java.lang.Exception

outputTableModel

public static void outputTableModel(javax.servlet.http.HttpServletResponse res,
                                    javax.swing.table.TableModel tm,
                                    Query q)
                             throws java.lang.Exception

Outputs the query result using the exporter of the query

Parameters:

res -

tm - - the tablemodel

q - - the query object

Throws:

java.lang.Exception

execute

public static Pair execute(Query q)
                    throws java.lang.Exception

Throws:

java.lang.Exception

execute

public static Pair execute(Query q,
                           java.lang.String query_id)
                    throws java.lang.Exception

Executes a query Object

Parameters:

q - - the query object

query_id - - the id of the query

Returns:

a Pair. first Entry is the query Object, the second the result tablemodel

Throws:

java.lang.Exception

parseXMLQuery

public static org.jdom.Document parseXMLQuery(java.lang.String queryStr)

Parses a XML String

Parameters:

queryStr -

Returns:

the parsed DOM Document

getReportingDataObject

public static ReportingData getReportingDataObject(org.jdom.Element e)
                                            throws java.lang.Exception

Parameters:

e - - the xml element of the query xml

Returns:

- the ReportingData Object for this attribute

Throws:

java.lang.Exception

See Also:

getReportingDataObject(String, String)

getReportingDataObject

public static ReportingData getReportingDataObject(java.lang.String entity,
                                                   java.lang.String attribute)
                                            throws java.lang.Exception

Parameters:

entity - - the referenced entity id of schema

attribute - - the referenced attribute id of schema

Returns:

the ReportingData Object for this attribute

Throws:

java.lang.Exception

isOracle

public static boolean isOracle()

Returns:

true if Database is Oracle

generateQueryId

public static java.lang.String generateQueryId()

returns a generated query ID

abort

public static void abort(java.lang.String query_id)
                  throws java.lang.Exception

Aborts a query execution

Parameters:

query_id -

Throws:

java.lang.Exception