Package de.elo.ix.client.imfs

Class MapHashToCreateRef

java.lang.Object

de.elo.ix.client.imfs.MapHashToCreateRef

public class MapHashToCreateRef
extends Object

This map temporarily stores a list of parent IDs where a document with a given MD5 hash is to be created. Checking duplicates cannot be exclusively performed via DB, since two documents with the same MD5 hash could be inserted simultaneously. That's why the MD5 hash is stored in this map for the duration of import. If meanwhile other documents with the same MD5 are to be inserted, their parent IDs are mapped to the MD5. After the first document has been inserted, references are created for the others found in the map.

Constructor Summary

Constructors

Constructor	Description
MapHashToCreateRef()

Method Summary

Modifier and Type	Method	Description
boolean	addAndCheckCreateRef(String md5, int parentId)	Add MD5 into map and memorize parentId if MD5 has already been inserted.
void	removeAndCreateRefs(IXConnection conn, String md5, int excludeParentId, int objId)	Remove MD5 hash from map and create references.
void	removePreparedRef(String md5, int parentId)	Remove entry added by addAndCheckCreateRef(String, int) from map.

Methods inherited from class java.lang.Object

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

Constructor Details

MapHashToCreateRef

public MapHashToCreateRef()

Method Details

addAndCheckCreateRef

public boolean addAndCheckCreateRef(String md5,
 int parentId)

Add MD5 into map and memorize parentId if MD5 has already been inserted.

Parameters:

md5 - MD5

parentId - Parent ID

Returns:

true, if MD5 has already been inserted before. This means that another thread is currently inserting a document with the same MD5.

removeAndCreateRefs

public void removeAndCreateRefs(IXConnection conn,
 String md5,
 int excludeParentId,
 int objId)
                         throws Exception

Remove MD5 hash from map and create references.

Parameters:

conn - IXConnection object

md5 - MD5

excludeParentId - Create references except for this parent ID.

objId - Create references to this object.

Throws:

Exception

removePreparedRef

public void removePreparedRef(String md5,
 int parentId)

Remove entry added by addAndCheckCreateRef(String, int) from map.

Parameters:

md5 - Hash

parentId - Parent ID