Package hec.io

Class AbstractDataStorage

java.lang.Object

hec.io.AbstractDataStorage

All Implemented Interfaces:

DataStorage

Direct Known Subclasses:

DBFDataStorage

public abstract class AbstractDataStorage
extends Object
implements DataStorage

Constructor Summary

Constructors

Constructor	Description
AbstractDataStorage()

Method Summary

Modifier and Type	Method	Description
long	addNewObject(Object obj)	add a new object to the DataStore return its id.
DataObject	addNewObject2(Object obj)	add the object returning the object
boolean	backupData(String backupDir, DataObject obj)
Object	callNativeMethod(Object obj)	call a native method in the DataStore base on the class type of obj.
void	compress()	This method is used to compress a datafile.
String	getFilename()
long	getLastModifiedTime()
protected Method[]	getMethodsByName(String methodName)	return a list of methods that have the methodName
int	getObjectCount()
Object	loadObject(String name, String objClass)	method required by DataStorage for local access to objects from rmiDataList
boolean	reload()	called when we're supposed to dump all our in memory data and reload from disk.
boolean	removeObject(long[] objId, String objClass)
boolean	removeObject(long objId, String objClass)	remove an object
boolean	save()
void	workspaceClosing()

Methods inherited from class java.lang.Object

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

Methods inherited from interface hec.io.DataStorage

getDataObjectIdList, getObjectList, init, loadObject, storeObject

Constructor Details

AbstractDataStorage

public AbstractDataStorage()

Method Details

getObjectCount

public int getObjectCount()

Specified by:

getObjectCount in interface DataStorage

getFilename

public String getFilename()

Specified by:

getFilename in interface DataStorage

callNativeMethod

public Object callNativeMethod(Object obj)

call a native method in the DataStore base on the class type of obj.

Specified by:

callNativeMethod in interface DataStorage

getMethodsByName

protected Method[] getMethodsByName(String methodName)

return a list of methods that have the methodName

addNewObject2

public DataObject addNewObject2(Object obj)

add the object returning the object

Specified by:

addNewObject2 in interface DataStorage

addNewObject

public long addNewObject(Object obj)

Description copied from interface: DataStorage

add a new object to the DataStore return its id.

Specified by:

addNewObject in interface DataStorage

save

public boolean save()

Specified by:

save in interface DataStorage

removeObject

public boolean removeObject(long objId,
 String objClass)

Description copied from interface: DataStorage

remove an object

Specified by:

removeObject in interface DataStorage

removeObject

public boolean removeObject(long[] objId,
 String objClass)

Specified by:

removeObject in interface DataStorage

workspaceClosing

public void workspaceClosing()

Specified by:

workspaceClosing in interface DataStorage

loadObject

public Object loadObject(String name,
 String objClass)

method required by DataStorage for local access to objects from rmiDataList

Specified by:

loadObject in interface DataStorage

backupData

public boolean backupData(String backupDir,
 DataObject obj)

Specified by:

backupData in interface DataStorage

reload

public boolean reload()

called when we're supposed to dump all our in memory data and reload from disk.

Specified by:

reload in interface DataStorage

getLastModifiedTime

public long getLastModifiedTime()

Specified by:

getLastModifiedTime in interface DataStorage

compress

public void compress()

This method is used to compress a datafile. Some data storage implemenations will buffer the record deletes by marking a delete flag. Call this to remove those records.

Specified by:

compress in interface DataStorage