[Batchserver-cvs] batchserver/src/org/jmonks/batchserver/framework/repository/db4o Db4oJobController

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Update of /cvsroot/batchserver/batchserver/src/org/jmonks/batchserver/framework/repository/db4o
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv18609

Added Files:
	Db4oJobControllerHolder.java Db4oJobDataTransfer.java 
	Db4oMgmtMntrInfoHolder.java Db4oRepository.java 
Log Message:
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--- NEW FILE: Db4oMgmtMntrInfoHolder.java ---
/*
 * Db4oMgmtMntrInfoHolder.java
 *
 * Created on March 15, 2006, 10:54 PM
 *
 * To change this template, choose Tools | Options and locate the template under
 * the Source Creation and Management node. Right-click the template and choose
 * Open. You can then make changes to the template in the Source Editor.
 */

package org.jmonks.batchserver.framework.repository.db4o;

/**
 *  Db4oMgmtMntrInfoHolder holds the job mgmt&mntr information and job name.
 *  This will be used only by Db4oRepository.
 *
 *  @author     Suresh Pragada
 *  @version    1.0
 *  @since      1.0
 */
class Db4oMgmtMntrInfoHolder
{
    /**
     *  Holds the job name
     */
    private String jobName=null;
    /**
     *  Holds the mgmtMntrInfo object
     */
    private Object mgmtMntrInfo=null;

    /**
     *  Constructor takes job name and mgmt & mntr info and constructs the object.
     */
    Db4oMgmtMntrInfoHolder(String jobName,Object mgmtMntrInfo)
    {
        this.jobName=jobName;
        this.mgmtMntrInfo=mgmtMntrInfo;
    }

    /**
     *  Returns the jobName.
     */
    public String getJobName()
    {
        return this.jobName;
    }
    /**
     *  Returns the mgmt & mntr object.
     */
    public Object getMgmtMntrInfo()
    {
        return this.mgmtMntrInfo;
    }
    /**
     * <p>
     *  Returns the string representation of Db4oMgmtMntrInfoHolder class in the format 
     *  <br> {Db4oMgmtMntrInfoHolder [jobName = value] [mgmtMntrInfo = value]}
     * </p>
     *
     * @return  Returns the string representation of Db4oMgmtMntrInfoHolder.
     */
    public String toString()
    {
        StringBuffer stringValue=new StringBuffer("{Db4oMgmtMntrInfoHolder ");
        stringValue.append("[jobName = " + this.jobName + "]");
        stringValue.append("[mgmtMntrInfo = " + this.mgmtMntrInfo + "]");
        stringValue.append("}");
        return stringValue.toString();
    }    

}

--- NEW FILE: Db4oJobDataTransfer.java ---
/*
 * Db4oJobDataTransfer.java
 *
 * Created on March 15, 2006, 10:39 PM
 *
 * To change this template, choose Tools | Options and locate the template under
 * the Source Creation and Management node. Right-click the template and choose
 * Open. You can then make changes to the template in the Source Editor.
 */

package org.jmonks.batchserver.framework.repository.db4o;

/**
 * <p>
 * Db4oJobDataTransfer holds the data being transferred between the jobs. 
 * This will not have any functionality except holding the data and  
 * this will be used to store in DB4O database. 
 * </p>
 * @author  Suresh Pragada
 * @version 1.0
 * @since   1.0
 */
class Db4oJobDataTransfer
{
    /**
     *  Holds the identifier by which jobs will communicated.
     */
    private String dataIdentifier;
    /**
     *  Source job name.
     */
    private String sourceJobName;
    /**
     *  Target job name, where data to be sent.
     */
    private String targetJobName;
    /**
     *  Data object.
     */
    private Object data;
    /**
     *  Constructor with all the argument to make this class immutable,
     *  once it got created.
     */
    Db4oJobDataTransfer(String dataIdentifer,String sourceJobName,String targetJobName,Object data)
    {
        this.dataIdentifier=dataIdentifer;
        this.sourceJobName=sourceJobName;
        this.targetJobName=targetJobName;
        this.data=data;
    }

    /**
     *  Returns the data identifier.
     */
    public String getDataIdentifier()
    {
        return this.dataIdentifier;
    }

    /**
     *  Returns the source job name.
     */
    public String getSourceJobName()
    {
        return this.sourceJobName;
    }

    /**
     *  Returns the target job name.
     */
    public String getTargetJobName()
    {
        return this.targetJobName;
    }

    /**
     *  Returns the job data.
     */
    public Object getData()
    {
        return this.data;
    }

    /**
     * <p>
     *  Returns the string representation of Db4oJobDataTransfer class in the format 
     *  <br> {Db4oJobDataTransfer [dataIdentifier = value] [sourceJN = value] 
     *          [targetJN = value] [data = value]}
     * </p>
     * 
     * @return  Returns the string representation of Db4oJobDataTransfer.
     */
    public String toString()
    {
        StringBuffer stringValue=new StringBuffer("{Db4oJobDataTransfer ");
        stringValue.append("[dataIdentifier = " + this.dataIdentifier + "]");
        stringValue.append("[sourceJobName = " + this.sourceJobName + "]");
        stringValue.append("[targetJobName = " + this.targetJobName + "]");
        stringValue.append("[Data = " + this.data + "]");            
        stringValue.append("}");
        return stringValue.toString();
    }    
}

--- NEW FILE: Db4oJobControllerHolder.java ---
/*
 * Db4oJobControllerHolder.java
 *
 * Created on March 15, 2006, 10:52 PM
 *
 * To change this template, choose Tools | Options and locate the template under
 * the Source Creation and Management node. Right-click the template and choose
 * Open. You can then make changes to the template in the Source Editor.
 */

package org.jmonks.batchserver.framework.repository.db4o;

import org.jmonks.batchserver.framework.controller.JobController;

/**
 *  Db4oJobControllerHolder holds the job controller object and job name.
 *  This class will be accessed by only Db4oRepository.
 *
 *  @author     Suresh Pragada
 *  @version    1.0
 *  @since      1.0
 */
class Db4oJobControllerHolder
{
    /**
     *  Holds the job name
     */
    private String jobName=null;
    /**
     *  Holds the job controller object
     */
    private JobController jobController=null;

    /**
     *  Constructor takes job name and job controller to constructs the object.
     */
    Db4oJobControllerHolder(String jobName,JobController jobController)
    {
        this.jobName=jobName;
        this.jobController=jobController;
    }

    /**
     *  Returns the jobName.
     */
    public String getJobName()
    {
        return this.jobName;
    }
    /**
     *  Returns the mgmt & mntr object.
     */
    public JobController getJobController()
    {
        return this.jobController;
    }
    /**
     * <p>
     *  Returns the string representation of Db4oJobControllerHolder class in the format 
     *  <br> {Db4oJobControllerHolder [jobName = value] [mgmtMntrInfo = value]}
     * </p>
     *
     * @return  Returns the string representation of Db4oJobControllerHolder.
     */
    public String toString()
    {
        StringBuffer stringValue=new StringBuffer("{Db4oJobControllerHolder ");
        stringValue.append("[jobName = " + this.jobName + "]");
        stringValue.append("[jobController = " + this.jobController + "]");
        stringValue.append("}");
        return stringValue.toString();
    }    

}    

--- NEW FILE: Db4oRepository.java ---
package org.jmonks.batchserver.framework.repository.db4o;

import com.db4o.Db4o;
import com.db4o.ObjectContainer;
import com.db4o.ObjectSet;
import com.db4o.query.Predicate;
import java.io.File;
import java.util.HashMap;
import java.util.Map;
import org.apache.log4j.Logger;
import org.jmonks.batchserver.framework.config.ConfigurationException;
import org.jmonks.batchserver.framework.controller.JobController;
import org.jmonks.batchserver.framework.repository.Repository;
import org.jmonks.batchserver.framework.JobStatistics;


/**
 * <p>
 * This implementation of repository uses the DB4O database as the repository. 
 * It expects the property repository-location present in the repository configuration 
 * in framework-cofig.xml file. The value of this property should be a valid directory name.
 * If directory doesnt exist, it will try to create directory with that path.
 * <br><br>
 * <pre>
 *    &lt;repository-config repository-class-name="org.jmonks.batchserver.framework.Db4oRepository"&gt;
 *          &lt;property key="repository-location"&gt;/batchserver/repository&lt;/property&gt;
 *    &lt;/repository-config&gt;
 * </pre>
 * <br><br>
 * Here repository-location defines where the DB4O database needs to create 
 * the repository file. By default framework will be configured with the values 
 * shown in the above XML configuration snippet.
 * </p>
 * @author  Suresh Pragada
 * @version 1.0
 * @since   1.0
 */
public class Db4oRepository extends Repository 
{
    private static Logger logger=Logger.getLogger(Db4oRepository.class);    
    /**
     *  Property identifies the repository location.
     */
    private static final String PROPERTY_REPOSIOTRY_LOCATION = "repository-location";
    /**
     * Name of the db40 datbase file used as the repository.
     */
    private static final String REPOSITORY_FILENAME = "batchserver_repository.db";
    /**
     *  Map holds the configuration properties of repository.
     */
    private Map repositoryConfigProperties=null;
    /**
     *  Db4o container object.
     */
    ObjectContainer container=null;
    /**
     * <p>
     * Creates the Db4oRepository by accepting the map consist of properties
     * needed to setup the repository. This make sure repository-location property
     * has been defined and the value defined for this property is valid.
     * </p>
     * @param   configProps Map contains the configuration properties.
     * 
     * @throws  ConfigurationException  If repository-location property is not defined and
     *                                      the value specified is invalid.
     */
    public Db4oRepository(Map configProps)
    {
        logger.trace("Entering constructor");
        this.repositoryConfigProperties=new HashMap(configProps);
        String repositoryLocation=(String)this.repositoryConfigProperties.get(Db4oRepository.PROPERTY_REPOSIOTRY_LOCATION);
        if(repositoryLocation==null || "".equals(repositoryLocation))
            throw new ConfigurationException(ConfigurationException.REPOSITORY_CONFIG, 
                                "repository-location is required for DefaultReposiotry implementation.");
        else
        {
            File repositoryDirectory=new File(repositoryLocation);
            if(!repositoryDirectory.exists())
            {
                boolean created=repositoryDirectory.mkdirs();
                if(!created)
                    throw new ConfigurationException(ConfigurationException.REPOSITORY_CONFIG, "Attempt to create directory " + repositoryLocation + " is failed.");
            }
            else if(repositoryDirectory.isFile())
            {
                throw new ConfigurationException(ConfigurationException.REPOSITORY_CONFIG, "Location " 
                                    + repositoryLocation + " defined is a file. Directory name is expected.");
            }
         
            /**
             *  Just to make sure, would be able to setup the repository.
             */
            String completeRepositoryFileName=repositoryDirectory.getAbsolutePath()+File.separator+Db4oRepository.REPOSITORY_FILENAME;
            this.container=Db4o.openFile(completeRepositoryFileName);
            if(this.container==null)
                throw new ConfigurationException(ConfigurationException.REPOSITORY_CONFIG, "Unable to create the file " + completeRepositoryFileName + " to setup repository.");
        }
        logger.trace("Exiting constructor");
    }

    /**
     * @see org.jmonks.batchserver.framework.Repository#sendDataToNextJob(String,String,String,Object)
     */
    public boolean sendDatatoNextJob(final String dataIdentifier, final String sourceJobName, final String targetJobName, final Object data)
    {
        if(dataIdentifier==null || sourceJobName==null || targetJobName==null || data==null)
            throw new IllegalArgumentException("No arguments cannot be null to the sendDataToNextJob method.");
        
        boolean dataSaved=false;
        if(this.container==null)
            dataSaved=false;
        else
        {
            /**
             *  Delete the entries exist with the identifier, source and target job names.
             */
            ObjectSet dataTransferredSet=container.query(new Predicate()
            {
                public boolean match(Db4oJobDataTransfer jobDataTransfer)
                {
                    if(dataIdentifier.equals(jobDataTransfer.getDataIdentifier()) &&
                            sourceJobName.equals(jobDataTransfer.getSourceJobName()) &&
                                targetJobName.equals(jobDataTransfer.getTargetJobName()))
                        return true;
                    else
                        return false;
                }
            });
            while(dataTransferredSet.hasNext())
            {
                container.delete(dataTransferredSet.next());
            }
            container.commit();
            
            /**
             * Add the new entry.
             */
            Db4oJobDataTransfer dataTransfer=new Db4oJobDataTransfer(dataIdentifier, sourceJobName, targetJobName, data);
            container.set(dataTransfer);
            container.commit();
            dataSaved=true;
        }
        return dataSaved;
    }

    /**
     * @see org.jmonks.batchserver.framework.Repository#getDataFromPreviousJob(String,String,String)
     */
    public Object getDataFromPreviousJob(final String dataIdentifier, final String sourceJobName, final String targetJobName)
    {
        if(dataIdentifier==null || sourceJobName==null || targetJobName==null)
            throw new IllegalArgumentException("Data identifer, source job name and target job name cannot be null " +
                                                    "to get the data from previous job.");
        
        if(container==null)
            return null;
        else
        {
            ObjectSet dataTransferResultSet=container.query(new Predicate()
            {
               public boolean match(Db4oJobDataTransfer jobDataTransfer)
               {
                   if(dataIdentifier.equals(jobDataTransfer.getDataIdentifier()) &&
                           sourceJobName.equals(jobDataTransfer.getSourceJobName()) &&
                                targetJobName.equals(jobDataTransfer.getTargetJobName()))
                   {
                       return true;
                   }
                   else
                       return false;
               }
            });
            
            if(dataTransferResultSet.hasNext())
            {
                return ((Db4oJobDataTransfer)dataTransferResultSet.next()).getData();
            }
            else
                return null;
        }
    }

    public boolean clearDataTransferredToNextJob(final String jobName)
    {
        if(jobName==null)
            throw new IllegalArgumentException("job name cannot be null.");
        
        boolean dataCleared=false;
        if(container==null)
            dataCleared=false;
        else
        {
            ObjectSet dataTransferResultSet=container.query(new Predicate()
            {
               public boolean match(Db4oJobDataTransfer jobDataTransfer)
               {
                   if(jobName.equals(jobDataTransfer.getSourceJobName()))
                   {
                       return true;
                   }
                   else
                       return false;
               }
            });

            while(dataTransferResultSet.hasNext())
                container.delete(dataTransferResultSet.next());
            
            container.commit();
            dataCleared=true;
        }
        return dataCleared;
    }
    
    /**
     * @see org.jmonks.batchserver.framework.Repository#registerJobMgmtMntrInfo(String,Object)
     */
    public boolean registerJobMgmtMntrInfo(String jobName, Object registrationInfo)
    {
        return true;
    }

    /**
     * @see org.jmonks.batchserver.framework.Repository#lookupJobMgmtMntrInfo(String)
     */
    public Object lookupJobMgmtMntrInfo(String jobName)
    {
        return null;
    }

    /**
     * @see org.jmonks.batchserver.framework.Repository#unregisterJobMgmtMntrInfo(String)
     */
    public boolean unregisterJobMgmtMntrInfo(String jobName)
    {
        return true;

    }

    /**
     *
     * @see org.jmonks.batchserver.framework.Repository#logStatistics(org.jmonks.batchserver.framework.JobStatistics)
     */
    public boolean logStatistics(JobStatistics statistics)
    {
        if(statistics==null)
            throw new IllegalArgumentException("Null statistic objects will not be saved in repository");

        boolean logged=false;
        if(container==null)
            logged=false;
        else
        {
            container.set(statistics);
            container.commit();
            logged=true;
        }
        return logged;
    }

    /**
     * @see org.jmonks.batchserver.framework.Repository#getStatistics(String)
     */
    public JobStatistics[] getStatistics(final String jobName)
    {
        if(jobName==null)
            throw new IllegalArgumentException("job name cannot be null for querying the job statistics.");
        
        JobStatistics[] statistics=null;
        
        if(container==null)
            statistics=new JobStatistics[0];
        else
        {
            ObjectSet statisticsResultSet=container.query(new Predicate()
            {
               public boolean match(JobStatistics jobStatistics) 
               {
                   if(jobName.equals(jobStatistics.getJobname()))
                    return true;
                   else
                       return false;
               }
            });
            
            statistics=new JobStatistics[statisticsResultSet.size()];
            for(int i=0;statisticsResultSet.hasNext();i++)
                statistics[i]=(JobStatistics)statisticsResultSet.next();
        }
        return statistics;
    }

    /**
     * @see org.jmonks.batchserver.framework.Repository#saveController(org.jmonks.batchserver.framework.controller.JobController,String)
     */
    public boolean saveController(String jobName, JobController controller)
    {
        return true;
    }

    /**
     * @see org.jmonks.batchserver.framework.Repository#loadController(String)
     */
    public JobController loadController(String jobName)
    {
        return null;
    }

    /**
     * @see org.jmonks.batchserver.framework.Repository#releaseController(String)
     */
    public boolean releaseController(String jobName)
    {
        return true;
    }
           
}

[Batchserver-cvs] batchserver/src/org/jmonks/batchserver/framework/repository/db4o Db4oJobController

[Batchserver-cvs] batchserver/src/org/jmonks/batchserver/framework/repository/db4o Db4oJobControllerHolder.java,NONE,1.1 Db4oJobDataTransfer.java,NONE,1.1 Db4oMgmtMntrInfoHolder.java,NONE,1.1 Db4oRepository.java,NONE,1.1