Raccoon.QE
Class SimQueryEngine

java.lang.Object
  Raccoon.QE.QueryEngine
      Raccoon.QE.SimQueryEngine

public class SimQueryEngine

extends QueryEngine

SimQueryEngine : Class that helps to simulate the QueryEngine. It always returns constant answers and thus it is good to test whether other engines work properly.

Author:

Qi Zhong

Field Summary

Fields inherited from class Raccoon.QE.QueryEngine

netModule, ph, rm, sqlParser

Constructor Summary

SimQueryEngine()

Method Summary

PVInstance	executeSFW(java.lang.String nodeName, java.lang.String sqlStmt)
int	GetAttrType(java.lang.String nodeName, java.lang.String relName, java.lang.String attrName) get the type of attribute.
boolean	isAttrExist(java.lang.String nodename, java.lang.String relname, java.lang.String attrname)
boolean	isRelExist(java.lang.String nodename, java.lang.String relname)

Methods inherited from class Raccoon.QE.QueryEngine

doLocalQuery, doQuery, filter, getResourceManager, initParser, intersect, isLocalQuery, searchCandidateTable, setNetModule, setResourceManager

Methods inherited from class java.lang.Object

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

Constructor Detail

SimQueryEngine

public SimQueryEngine()

Method Detail

isRelExist

public boolean isRelExist(java.lang.String nodename,
                          java.lang.String relname)

Overrides:

isRelExist in class QueryEngine

isAttrExist

public boolean isAttrExist(java.lang.String nodename,
                           java.lang.String relname,
                           java.lang.String attrname)

Overrides:

isAttrExist in class QueryEngine

GetAttrType

public int GetAttrType(java.lang.String nodeName,
                       java.lang.String relName,
                       java.lang.String attrName)

Description copied from class: QueryEngine

get the type of attribute. We'll use the information sored in the Schema in each node and then convert the typeName into enum type

Overrides:

GetAttrType in class QueryEngine

executeSFW

public PVInstance executeSFW(java.lang.String nodeName,
                             java.lang.String sqlStmt)
                      throws java.sql.SQLException

Overrides:

executeSFW in class QueryEngine

Throws:

java.sql.SQLException