Initialising static list using spring - spring

Question

I have a class as below:
public class SensitivityDescription {
private final String measureId;
private final ColumnType type; private final String sensName;
private final SensType sensType;
private final ServicePhase svcPhase;
private final AggregateFunction agFn;
private final String positionEnum;
private static List <SensitivityDescription> senRecordList = new ArrayList<SensitivityDescription> ();
public SensitivityDescription(String measureId, ColumnType type,
String sensName, SensType sensType, ServicePhase svcPhase,
AggregateFunction agFn, String positionEnum) {
super();
this.measureId = measureId;
this.type = type;
this.sensName = sensName;
this.sensType = sensType;
this.svcPhase = svcPhase;
this.agFn = agFn;
this.positionEnum = positionEnum;
}
I need to populate the static senRecordList with objects of the SensitivityDescription class.How do I do this in spring xml.

Answer 1

Based on this link everything is working:
Class
package com.sopovs.moradanen.test;
import java.util.List;
public class SensitivityDescription {
private String name;
private static List<SensitivityDescription> senRecordList;
public SensitivityDescription(String name) {
this.name = name;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public static void setSenRecordList(List<SensitivityDescription> senRecordList) {
SensitivityDescription.senRecordList = senRecordList;
}
public static List<SensitivityDescription> getSenRecordList() {
return senRecordList;
}
}
Xml config:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context" xmlns:p="http://www.springframework.org/schema/p"
xmlns:c="http://www.springframework.org/schema/c" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">
<bean id="first" class="com.sopovs.moradanen.test.SensitivityDescription">
<constructor-arg name="name" value="first" />
</bean>
<bean id="second" class="com.sopovs.moradanen.test.SensitivityDescription">
<constructor-arg name="name" value="second" />
</bean>
<bean id="third" class="com.sopovs.moradanen.test.SensitivityDescription">
<constructor-arg name="name" value="third" />
</bean>
<bean
class="org.springframework.beans.factory.config.MethodInvokingFactoryBean">
<property name="staticMethod"
value="com.sopovs.moradanen.test.SensitivityDescription.setSenRecordList" />
<property name="arguments">
<list>
<ref bean="first" />
<ref bean="second" />
<ref bean="third" />
</list>
</property>
</bean>
</beans>
And test:
package com.sopovs.moradanen.test;
import static org.junit.Assert.assertEquals;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
#RunWith(SpringJUnit4ClassRunner.class)
#ContextConfiguration("classpath:test.xml")
public class SpringTest {
#Test
public void test() {
assertEquals(3, SensitivityDescription.getSenRecordList().size());
}
}

Answer 2

Spring way of thinking does not play well with your approach.
But you can work around this.
Add a public setter for senRecordList for SensitivityDescription.
Add default constructor
public class SensitivityDescription {
private final String measureId;
...
private static List <SensitivityDescription> senRecordList = new ArrayList<SensitivityDescription> ();
public SensitivityDescription(String measureId,..) {
...
}
/** new code */
public SensitivityDescription() {super();}
public void setSenRecordList(List<SensitivityDescription> senRecordList) {
SensitivityDescription.senRecordList = senRecordList;
}
}
Instance the bean once, that way the list will be injected to your field.
<bean class="...SensitivityDescription">
<property name="senRecordList">
<util:list value-type="...SensitivityDescription">
<bean class="...SensitivityDescription">
<constructor-arg name="name" “measureId”
<value>id1</value>
</constructor-arg>
<constructor-arg name="name" "sensName"
<value>name1</value>
</constructor-arg>
...
</bean>
<bean class="...SensitivityDescription">
<constructor-arg name="name" "measureId"
<value>id2</value>
</constructor-arg>
<constructor-arg name="name" "sensName"
<value>name2</value>
</constructor-arg>
...
</bean>
</util:list>
</property>
</bean>
If this is not a legacy code and you can change it, I suggest defining a singleton for those values and not a static field. Spring will like it better.