How can I Initialize getJdbcTemplate()?

[java_dev]

Hi Deliverance, I am facing one issue, I injected FieldValue in spring config file as follows,

x-shedular.xml

<bean id="fieldValue" class="com….FieldValue"/> 

<bean id="activityGenerationJob"
		class="com….CActivityGenerationScheduledJob"
		  p:fieldValue-ref="fieldValue" 
		/>

CActivityGenerationScheduledJob.java

When I tired to override two columns  
fieldValue[0].setIdentifier("0");  
fieldValue[0].setName("FirstDate");
fieldValue[0].setValue(updated_FirstDate);

fieldValue[0].setIdentifier("1");  
fieldValue[0].setName("SecondDate");
fieldValue[0].setValue(updated_ SecondDate);

cAPIClient.addActivityWithOverride(somenumber, “some value”,fieldValue);

Constructor Summary 
1. FieldValue() 
2. FieldValue(java.lang.String identifier, java.lang.String name, java.lang.String value)

I can't set size as bellow , becose it is a final value

if(fieldValue.length ==0){
 fieldValue.length = 5;
}

addActivityWithOverride() method 3 parameter is type of FieldValue, When I tried with HashMap, type cast exception is comming.

but my first name and value is overriding/replacing by second value, here how can I initialize the FieldValue with value more than 1 so that I can generate Activity With Override.

Please help.

[Deliverance]

And with good reason.

length is a property that primitive array types provide, as a convenience for polling the size of the array. It can only be read from.

FieldValue [] fieldValues = new FieldValue[5];
System.out.println(fieldValues.length);

[java_dev]

Deliverance, When I initialized as
try1: with out removing FieldValue bean injection in config file

fieldValue = new FieldValue[5];

try2: after removing FieldValue bean injection in config file

FieldValue fieldValue = new FieldValue[5];

For Both tries, I am getting null pointer exception at

fieldValue[0].setIdentifier("0");

please help.

[java_dev]

And with good reason.

length is a property that primitive array types provide, as a convenience for polling the size of the array. It can only be read from. 


Code:
FieldValue [] fieldValues = new FieldValue[5];
System.out.println(fieldValues.length);

here spring is injecting the FieldValue bean, do we need new keyword again ? all I want is how to assign size. please correct me if am wrong.

[Deliverance]

In the constructor, or @PostConstruct annotation you should provide initialization of this array. This assumes you know the size you need in advance, and it is fixed.
You have only provided a container to hold these objects, but it does not contain the reference objects yet, so you still have to do

fieldValues[0] = new FieldValue();

[java_dev]

When I initialized with 5 as bellow

fieldValue[5] = new FieldValue();

I am getting

 java.lang.ArrayIndexOutOfBoundsException: 5

how to resolve this?

[jcaccia]

--

[Deliverance]

new FieldValue() creates one instance of FieldValue. At the left of the assignment operator you have an array of 5 objects of type FieldValue.

Incorrect.

Left hand side is fieldValues at index 5 , which is out of range, since arrays start at 0.

you have 0, 1, 2, 3, 4 (which is 5 elements).

[jcaccia]

You are right, sorry, got distracted in the office while replying to the post and ended writing that stupid reply...

[java_dev]

Hi jcaccia and Deliverance, thanks for you concerns on my issue.

Can you please let me know how can I solve my above issue? I am struck....

Thanks in advance!

-Dev

[Deliverance]

Left hand side is fieldValues at index 5 , which is out of range, since arrays start at 0.

you have 0, 1, 2, 3, 4 (which is 5 elements).

^ that answers it.

[java_dev]

I want to initialize to more than one so that I can append two columns to override (please refer my #16 post)

When I tried as follows

fieldValue[0] = new FieldValue();

I am getting following exception at

fieldValue[1].setName("SecondDate");
fieldValue[1].setValue(updated_ SecondDate);

Exception:

 java.lang.ArrayIndexOutOfBoundsException: 1

Please help.

[Deliverance]

Refer to my post #20.

The array capacity has to be instantiated or given to you (assuming you know this in advance).

Is this your implementation of the class? Can you switch this to LinkedList<FieldValue> instead that is wired to you? It's unclear what you are doing or plan to do , but an array class that has to be dynamically created for me isn't an ideal candidate to be wired up by Spring.

You have two things you must do:

1) Instantiate the array
2) Instantiate the objects, and provide the reference object to the desired index.

It's hard to give you more info without knowing what/why you are doing it this way, and whether or not you manage the code behind FieldValue.

[java_dev]

Excelent Deliverance, I am able to resolve with your above inputs. Thanks

[java_dev]

Hi,

I want to write JUnit test cases for my job.

CActivityGenerationScheduledJob.java

public void setICListDAO(ICNumberListDAO cListDAO) {
	this.cListDAO = cListDAO;
}

public void runScheduledJob() {		 
  List result_list = cListDAO.getAllCPublicIDs();
  .
  .
  .
}

ICNumberListDAO.java

public interface ICNumberListDAO extends IJdbcDAO {
	List getAllCPublicIDs();
	// other methods
}

CCCListDAO.java

public class CCCListDAO extends JdbcDAO implements ICNumberListDAO {

	public List getAllCPublicIDs() {
		List result_list=null ;
		try{
		 result_list = getJdbcTemplate().queryForList(
				this.loadQuery(SQLConstants.PACKAGE,
						SQLConstants.C_LIST));
		
		} catch (Exception bse) {
			logError("Error in querying.", bse);
		} 
		return result_list;
		
	}
}

CActivityGenerationScheduledJobTestCase.java

public class CActivityGenerationScheduledJobTestCase extends
		AbstractTestCase {
public void testRunScheduledJob() {
   cActivityGenerationScheduledJob.setICListDAO(cListDAO);
   cActivityGenerationScheduledJob.setICAPIClient(iCAPIClient);
	try {			
	cActivityGenerationScheduledJob.runScheduledJob();

		} catch (Exception e) {
			logError("Error running runScheduledJob.", e);
			fail();
		}
	}

when I called runScheduledJob() from CActivityGenerationScheduledJobTestCase class I am getting following exception. Please tell me the best solution for this.

(I have observed CCCListDAO class is coming as null)


Error:

2009-10-26 06:21:58,772 ERROR Error in Generating   Activity.
java.lang.NullPointerException
	at com……CActivityGenerationScheduledJob.runScheduledJob(CActivityGenerationScheduledJob.java:61)
	at com……CActivityGenerationScheduledJobTestCase.testRunScheduledJob(CActivityGenerationScheduledJobTestCase.java:44)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:324)
	at junit.framework.TestCase.runTest(TestCase.java:164)
	at junit.framework.TestCase.runBare(TestCase.java:130)
	at junit.framework.TestResult$1.protect(TestResult.java:106)
	at junit.framework.TestResult.runProtected(TestResult.java:124)
	at junit.framework.TestResult.run(TestResult.java:109)
	at junit.framework.TestCase.run(TestCase.java:120)
	at org.eclipse.jdt.internal.junit.runner.junit3.JUnit3TestReference.run(JUnit3TestReference.java:130)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:460)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:673)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:386)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:196)

- Dev