org.dbunit.ant

Class QuerySet

java.lang.Object

org.apache.tools.ant.ProjectComponent

org.dbunit.ant.QuerySet

public class QuerySet
extends org.apache.tools.ant.ProjectComponent

This element is a container for Queries. It facilitates reuse through references. Using Ant 1.6 and greater, references can be defined in a single build file and imported into many others. An example of where this is useful follows:

In our database we have INDIVIDUALS which must have an associated NAME_INFO and at least one IND_ADDRESS. The developer creating a dataset for his/her tests probably won't know all the details of what relationships are expected, and if he did, its an error prone and repetitive task to create the correct SQL for entities in each dataset. Missing a related table, not only creates invalid data for your tests, but also is likely to cause DBUnit setUp() failures from foreign key constraint violation errors. (example: If a previous test had inserted INDIVIDUALS and NAME_INFO and my test tries to delete only the INDIVIDUALS, the NAME_INFO.IND_ID constraint would be violated)

Each queryset is internally converted to a QueryDataSet and then combined using a CompositeDataSet. This means that you can use more than one query element for any given table provided they are nested within separate querysets.

Usage:

 <!-- ======== Define the reusable reference ========== -->

 <queryset id="individuals">
    <query name="INDIVIDUALS" sql="
      SELECT * FROM INDIVIDUALS WHERE IND_ID IN (@subQuery@)"/>

    <query name="NAME_INFO" sql="
      SELECT B.* FROM INDIVIDUALS A, NAME_INFO B
      WHERE A.IND_ID IN (@subQuery@)
      AND B.IND_ID = A.IND_ID"/>

    <query name="IND_ADDRESSES" sql="
      SELECT B.* FROM INDIVIDUALS A, IND_ADDRESSES B
      WHERE A.IND_ID IN (@subQuery@)
      AND B.IND_ID = A.IND_ID"/>
 </queryset>

 <!-- ========= Use the reference ====================== -->

 <dbunit driver="${jdbcDriver}"
     url="${jdbcURL}" userid="${jdbcUser}" password="${jdbcPassword}">
   <export dest="${dest}">
   <queryset refid="individuals">
      <filterset>
        <filter token="subQuery" value="
          SELECT IND_ID FROM INDIVIDUALS WHERE USER_NAME = 'UNKNOWN'"/>
      </filterset>
   </queryset>

   </export>
 </dbunit>

 

Since:

2.2.0 (Sep. 13 2004)

Version:

$Revision$ $Date$

Author:

Lenny Marks lenny@aps.org, Last changed by: $Author$

Field Summary

Fields inherited from class org.apache.tools.ant.ProjectComponent

project

Constructor Summary

Constructors

Constructor and Description
QuerySet()

Method Summary

Methods

Modifier and Type	Method and Description
void	addFilterSet(org.apache.tools.ant.types.FilterSet filterSet)
void	addQuery(Query query)
void	copyQueriesFrom(QuerySet referenced)
String	getId()
List	getQueries()
QueryDataSet	getQueryDataSet(IDatabaseConnection connection)
String	getRefid()
void	setId(String string)
void	setRefid(String string)

Methods inherited from class org.apache.tools.ant.ProjectComponent

getProject, log, log, setProject

Methods inherited from class java.lang.Object

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

Constructor Detail

QuerySet

public QuerySet()

Method Detail

addQuery

public void addQuery(Query query)

addFilterSet

public void addFilterSet(org.apache.tools.ant.types.FilterSet filterSet)

getId

public String getId()

getRefid

public String getRefid()

setId

public void setId(String string)

setRefid

public void setRefid(String string)

getQueries

public List getQueries()

copyQueriesFrom

public void copyQueriesFrom(QuerySet referenced)

getQueryDataSet

public QueryDataSet getQueryDataSet(IDatabaseConnection connection)
                             throws SQLException,
                                    AmbiguousTableNameException

Throws:

SQLException

AmbiguousTableNameException