Re: jasperreports framework
Re: jasperreports framework
- Subject: Re: jasperreports framework
- From: Kieran Kelleher <email@hidden>
- Date: Mon, 13 Aug 2012 13:33:48 -0400
On Aug 13, 2012, at 10:34 AM, Theodore Petrosky <email@hidden> wrote:
> Kieran,
>
> would you like to add this to the Jasper framework?
Add what?
> the only 'change' I had to make was from your comment:
>
> this.theObjectGID = theObject.globalID() // or use theObject.editingContext().globalIDForObject( theObject );
>
> I had to use: theObject.editingContext().globalIDForObject( theObject );
>
> or it complained.
>
> Ted
>
> --- On Mon, 8/13/12, Kieran Kelleher <email@hidden> wrote:
>
>> From: Kieran Kelleher <email@hidden>
>> Subject: Re: jasperreports framework
>> To: "Theodore Petrosky" <email@hidden>
>> Cc: email@hidden
>> Date: Monday, August 13, 2012, 8:24 AM
>> I made a few tweaks
>> to your code in bold font below - hope those come through -
>> otherwise just compare to your original code. In case you
>> find a typo, this is OTOH without code-completion
>> .....
>> HTH, Kieran
>> PS. Look at the BackgroundTasks presentation from
>> WOWODC and you will see the pattern of EO handling below
>> explained there and will also see how to use a different OSC
>> for your background task.
>> On Aug 11, 2012, at 10:03 AM, Theodore Petrosky
>> <email@hidden>
>> wrote:
>>
>> I was playing around with Kieran's framework and I
>> wanted to create a JasperReport from an EO. So, I created a
>> new class that creates a 'reportTask' from an EO.
>>
>> This is the first time I am attempting to alter for add to a
>> someone else's framework. Could you look this over? The
>> only caveat that I can find is that I must create a local
>> instance in a new EC of the EO before passing it into the
>> class. I think Kieran mentions that in his comments in:
>> ERJRFetchSpecificationReportTask.
>>
>> I am calling it with:
>>
>> public static Callable<File>
>> createMeetingCheckListReportTaskFromEO(MeetingChecklist
>> checklist) {
>>
>> String reportDescription = "Printed
>> Meeting Checklist";
>>
>> HashMap<String, Object> parameters
>> = new HashMap<String, Object>();
>>
>> parameters.put("reportDescription",
>> reportDescription);
>> parameters.put("userName",
>> "User From session");
>>
>> ERJRReportTaskFromEO reportTask = new
>> ERJRReportTaskFromEO(checklist,
>> jasperMCLCompiledReportFileName, parameters);
>>
>> return reportTask;
>>
>> }
>>
>> it works, but should the creation of the new editing context
>> be in the class ERJasperReportTaskFromEO?
>>
>>
>> here is my new class:
>>
>> package er.jasperreports;
>>
>> import java.io.File;
>> import java.util.HashMap;
>> import java.util.Map;
>> import java.util.concurrent.Callable;
>>
>> import
>> org.apache.commons.lang.exception.NestableRuntimeException;
>> import org.apache.log4j.Logger;
>>
>> import er.jasperreports.ERJRFoundationDataSource;
>> import er.jasperreports.ERJRUtilities;
>>
>> import com.webobjects.eoaccess.EOEntity;
>> import com.webobjects.eocontrol.EOEditingContext;
>> import com.webobjects.eocontrol.EOEnterpriseObject;
>> import com.webobjects.eocontrol.EOFetchSpecification;
>> import com.webobjects.eocontrol.EOQualifier;
>> import com.webobjects.foundation.NSArray;
>> import com.webobjects.foundation.NSLog;
>>
>> import er.extensions.appserver.ERXApplication;
>> import er.extensions.concurrency.ERXTaskPercentComplete;
>> import er.extensions.eof.ERXEC;
>> import er.extensions.eof.ERXEOAccessUtilities;
>> import er.extensions.foundation.ERXAssert;
>>
>> /**
>> * A background task class that creates a JasperReports
>> report in the context
>> * of a WebObjects application. Sensible defaults are used.
>> It creates the JasperReport
>> * after passing in a EO.
>> *
>> * @author Ted P
>> *
>> */
>> public class ERJRReportTaskFromEO implements
>> Callable<File>, ERXTaskPercentComplete {
>> private static final Logger log =
>> Logger.getLogger(ERJRReportTaskFromEO.class);
>>
>> private File reportFile;
>> private final String frameworkName;
>> private final String
>> jasperCompiledReportFileName;
>> private Map<String, Object>
>> parameters;
>>
>> private EOGlobalID theObjectGID;
>> // Use threadsafe global IDs for background
>> task ivars
>>
>> // iVar so we can get percentage
>> complete
>> private ERJRFoundationDataSource
>> jrDataSource;
>>
>> public
>> ERJRReportTaskFromEO(EOEnterpriseObject theObject, String
>> jasperCompiledReportFileName) {
>> this(theObject,
>> jasperCompiledReportFileName, null, null);
>> }
>>
>> public
>> ERJRReportTaskFromEO(EOEnterpriseObject theObject, String
>> jasperCompiledReportFileName, HashMap<String, Object>
>> parameters) {
>> this(theObject,
>> jasperCompiledReportFileName, null, parameters);
>> }
>>
>> public
>> ERJRReportTaskFromEO(EOEnterpriseObject theObject, String
>> jasperCompiledReportFileName, String frameworkName,
>> HashMap<String, Object> parameters) {
>>
>>
>> ERXAssert.PRE.notNull(theObject);
>>
>> ERXAssert.PRE.notNull(jasperCompiledReportFileName);
>>
>>
>> this.jasperCompiledReportFileName =
>> jasperCompiledReportFileName;
>> this.frameworkName =
>> frameworkName;
>> this.parameters =
>> parameters;
>> // grab the
>> global ID in the constructor. The constructor executes in
>> the thread that creates the task instance
>>
>> this.theObjectGID =
>> theObject.globalID() // or use
>> theObject.editingContext().globalIDForObject( theObject
>> );
>>
>> ERXAssert.PRE.notNull(theObjectGID); // If
>> the object is new, this will be null. test and
>> throw.
>> if (this.parameters ==
>> null) {
>>
>> this.parameters = new HashMap<String, Object>();
>> }
>> }
>>
>>
>> /**
>> * Callable interface
>> implementation
>> *
>> * @throws Exception
>> */
>> public File call() throws Exception {
>>
>>
>> ERXApplication._startRequest();
>> try {
>>
>> return _call();
>> } catch (Exception e)
>> {
>>
>> log.error("Error in JR task", e);
>>
>> throw e;
>> } finally {
>> //
>> Unlocks any locked editing contexts
>>
>> ERXApplication._endRequest();
>> }
>>
>> }
>>
>> private File _call() {
>> // If development
>> if
>> (ERXApplication.isDevelopmentModeSafe()) {
>>
>> parameters.put("_isDevelopmentMode",
>> Boolean.TRUE);
>> } else {
>>
>> parameters.put("_isDevelopmentMode", Boolean.FALSE
>> );
>> }
>>
>> reportFile = null;
>>
>> if
>> (log.isDebugEnabled())
>>
>> log.debug("Starting JasperReportTask: " +
>> this.toString());
>> EOEditingContext ec =
>> ERXEC.newEditingContext();
>> ec.lock();
>>
>> try {
>>
>> EOEnterpriseObject theObject = ec.faultForGlobalID(
>> theObjectGID, ec);
>>
>> jrDataSource = new ERJRFoundationDataSource(new
>> NSArray<EOEnterpriseObject>(theObject));
>>
>> if
>> (jasperCompiledReportFileName != null) {
>>
>> reportFile =
>> ERJRUtilities.runCompiledReportToPDFFile(jasperCompiledReportFileName,
>> frameworkName, parameters, jrDataSource);
>> }
>>
>> } catch (Exception e)
>> {
>>
>> throw new NestableRuntimeException(e);
>> } finally {
>> //
>> ec.unlock();
>> }
>>
>> return reportFile;
>> }
>>
>> public File file() {
>> return reportFile;
>> }
>>
>> /* (non-Javadoc)
>> * @see
>> wk.foundation.concurrent.TaskPercentComplete#percentComplete()
>> *
>> * Some whacky logic just so
>> the user can be comfortable that we are making some
>> progress.
>> */
>> public Double percentComplete() {
>> if (jrDataSource ==
>> null) {
>>
>> return Double.valueOf(0.1);
>> } else {
>>
>> double percent = 0.1 + jrDataSource.percentProcessed() *
>> 0.8;
>>
>> return Double.valueOf(percent);
>> }
>> }
>>
>> }
>>
>>
>>
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