org.mycore.backend.hibernate
Class MCRHIBLinkTableStore

java.lang.Object
  org.mycore.backend.hibernate.MCRHIBLinkTableStore

All Implemented Interfaces:

MCRLinkTableInterface

public class MCRHIBLinkTableStore
extends Object
implements MCRLinkTableInterface

This class implements the MCRLinkTableInterface.

Author:

Heiko Helmbrecht, Jens Kupferschmidt

Field Summary

(package private) static Logger

LOGGER

Constructor Summary

MCRHIBLinkTableStore()
The constructor for the class MCRHIBLinkTableStore.

Method Summary

int	countTo(String fromtype, String to, String type, String restriction) The method count the number of references with '%from%' and 'to' and optional 'type' and optional 'restriction%' values of the table.
void	create(String from, String to, String type, String attr) The method create a new item in the datastore.
void	delete(String from, String to, String type) The method removes a item for the from ID from the datastore.
Map<String,Number>	getCountedMapOfMCRTO(String mcrtoPrefix) The method returns a Map of all counted distinct references
Collection<String>	getDestinationsOf(String source, String type) Returns a List of all link destinations of destination
Collection<String>	getSourcesOf(String to, String type) Returns a List of all link sources of to and a special type

Methods inherited from class java.lang.Object

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

Field Detail

LOGGER

static Logger LOGGER

Constructor Detail

MCRHIBLinkTableStore

public MCRHIBLinkTableStore()

The constructor for the class MCRHIBLinkTableStore.

Method Detail

create

public final void create(String from,
                         String to,
                         String type,
                         String attr)

The method create a new item in the datastore.

Specified by:

create in interface MCRLinkTableInterface

Parameters:

from - a string with the link ID MCRFROM

to - a string with the link ID MCRTO

type - a string with the link ID MCRTYPE

attr - a string with the link ID MCRATTR

delete

public final void delete(String from,
                         String to,
                         String type)

The method removes a item for the from ID from the datastore.

Specified by:

delete in interface MCRLinkTableInterface

Parameters:

from - a string with the link ID MCRFROM

to - a string with the link ID MCRTO

type - a string with the link ID MCRTYPE

countTo

public final int countTo(String fromtype,
                         String to,
                         String type,
                         String restriction)

The method count the number of references with '%from%' and 'to' and optional 'type' and optional 'restriction%' values of the table.

Specified by:

countTo in interface MCRLinkTableInterface

Parameters:

fromtype - a substing in the from ID as String, it can be null

to - the object ID as String, which is referenced

type - the refernce type, it can be null

restriction - a first part of the to ID as String, it can be null

Returns:

the number of references

getCountedMapOfMCRTO

public Map<String,Number> getCountedMapOfMCRTO(String mcrtoPrefix)

The method returns a Map of all counted distinct references

Specified by:

getCountedMapOfMCRTO in interface MCRLinkTableInterface

Parameters:

mcrtoPrefix -

Returns:

the result-map of (key,value)-pairs can be visualized as
select count(mcrfrom) as value, mcrto as key from mcrlinkclass|mcrlinkhref where mcrto like mcrtoPrefix + '%' group by mcrto;

getSourcesOf

public Collection<String> getSourcesOf(String to,
                                       String type)

Returns a List of all link sources of to and a special type

Specified by:

getSourcesOf in interface MCRLinkTableInterface

Parameters:

to - Destination-ID

type - Link reference type, this can be null. Current types are child, classid, parent, reference and derivate.

Returns:

List of Strings (Source-IDs)

getDestinationsOf

public Collection<String> getDestinationsOf(String source,
                                            String type)

Returns a List of all link destinations of destination

Specified by:

getDestinationsOf in interface MCRLinkTableInterface

Parameters:

source - source-ID

type - Link reference type, this can be null. Current types are child, classid, parent, reference and derivate.

Returns:

List of Strings (Destination-IDs)