Relation samples

Basics

On most methods, you’ll see the parameter named “nodeId”. The value of this parameter can be a valid document, folder, mail or record UUID or path.

Tip

Example of nodeId:

• Using UUID -> “f123a950-0329-4d62-8328-0ff500fd42db”

Suggested code sample

First, you must create the webservice object:

OKMWebservices ws = OKMWebservicesFactory.newInstance(host);

Then you should log in using the method “login”. You can access the “login” method from the webservice object “ws” as shown below:

ws.login(user, password);

Caution

Once logged in to the webservice, the session is kept in the webservice object. Then you can use the other API methods.

At this point, you can use all the Relation methods from the “relation” class as shown below:

ws.relation.getRelationTypes(RelationType.BIDIRECTIONAL);

Methods

getRelationTypes

Description:

Method	Return values	Description
getRelationTypes(String type)	List	Retrieves a list of all relations defined for a type.

Available types:

• RelationType.BIDIRECTIONAL
• RelationType.PARENT_CHILD
• RelationType.MANY_TO_MANY

Note

More information on Relation types.

Example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using com.openkm.sdk4csharp;
using com.openkm.sdk4csharp.bean;

namespace OKMRest
{
public class Program
{
static void Main(string[] args)
{
String host = "http://localhost:8080/openkm";
String username = "okmAdmin";
String password = "admin";
OKMWebservice ws = OKMWebservicesFactory.newInstance(host);

try
{
ws.login(user, password);
foreach (RelationType type in ws.relation.getRelationTypes(RelationType.PARENT_CHILD))
{
System.Console.WriteLine(type);
}
}
catch (Exception e)
{
System.Console.WriteLine(e.ToString());
}
}
}
}

add

Description:

Method	Return values	Description
add(String nodeAId, String nodeBId, long relTypeId)	void	Sets a relation between two nodes.

The parameters nodeAId and nodeBId should be any valid document, folder, mail, or record UUID.

Example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using com.openkm.sdk4csharp;
using com.openkm.sdk4csharp.bean;

namespace OKMRest
{
public class Program
{
static void Main(string[] args)
{
String host = "http://localhost:8080/openkm";
String username = "okmAdmin";
String password = "admin";
OKMWebservice ws = OKMWebservicesFactory.newInstance(host);

try
{
ws.login(user, password);
foreach (RelationType type in ws.relation.getRelationTypes(RelationType.BIDIRECTIONAL))
{
// looking for a relation named invoice
if (type.title.Equals("invoice"))
{
ws.relation.add("50b7a5b9-89d2-430e-bbc9-6a6e01662a71", "055e4384-7c70-4456-b32b-f5a55a79861f", type.id);
}
}
}
catch (Exception e)
{
System.Console.WriteLine(e.ToString());
}
}
}
}

delete

Description:

Method	Return values	Description
delete(long relationId)	void	Deletes a relationship.

Caution

A relation can be deleted only when no node uses it. Otherwise, you’ll get an error.

Example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using com.openkm.sdk4csharp;
using com.openkm.sdk4csharp.bean;

namespace OKMRest
{
public class Program
{
static void Main(string[] args)
{
String host = "http://localhost:8080/openkm";
String username = "okmAdmin";
String password = "admin";
OKMWebservice ws = OKMWebservicesFactory.newInstance(host);

try
{
ws.login(user, password);
foreach (RelationType type in ws.relation.getRelationTypes(RelationType.BIDIRECTIONAL))
{
// looking for a relation named invoice
if (type.title.Equals("invoice"))
{
ws.relation.delete(type.id);
}
}
}
catch (Exception e)
{
System.Console.WriteLine(e.ToString());
}
}
}
}

getRelations

Description:

Method	Return values	Description
getRelations(String uuid)	List	Retrieves a list of all relations of a node.

Example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using com.openkm.sdk4csharp;
using com.openkm.sdk4csharp.bean;

namespace OKMRest
{
public class Program
{
static void Main(string[] args)
{
String host = "http://localhost:8080/openkm";
String username = "okmAdmin";
String password = "admin";
OKMWebservice ws = OKMWebservicesFactory.newInstance(host);

try
{
ws.login(user, password);
foreach (Relation relation in ws.relation.getRelations("055e4384-7c70-4456-b32b-f5a55a79861f"))
{
System.Console.WriteLine(relation);
}
}
catch (Exception e)
{
System.Console.WriteLine(e.ToString());
}
}
}
}

getRelationGroups

Description:

Method	Return values	Description
getRelationGroups(String uuid)	List	Retrieves a list of all relation groups for a node.

Example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using com.openkm.sdk4csharp;
using com.openkm.sdk4csharp.bean;

namespace OKMRest
{
public class Program
{
static void Main(string[] args)
{
String host = "http://localhost:8080/openkm";
String username = "okmAdmin";
String password = "admin";
OKMWebservice ws = OKMWebservicesFactory.newInstance(host);

try
{
ws.login(user, password);
foreach (RelationGroup rGroup in ws.relation.getRelationGroups("055e4384-7c70-4456-b32b-f5a55a79861f"))
{
System.Console.WriteLine(rGroup.toString());
}
}
catch (Exception e)
{
System.Console.WriteLine(e.ToString());
}
}
}
}

addGroup

Description:

Method	Return values	Description
addGroup(String nodeId, String groupName, long type)	void	Adds a relation group to a node.

For a relation group, it only makes sense to apply the relation type RelationType.MANY_TO_MANY.

Note

More information on Relation types.

Example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using com.openkm.sdk4csharp;
using com.openkm.sdk4csharp.bean;

namespace OKMRest
{
public class Program
{
static void Main(string[] args)
{
String host = "http://localhost:8080/openkm";
String username = "okmAdmin";
String password = "admin";
OKMWebservice ws = OKMWebservicesFactory.newInstance(host);

try
{
ws.login(user, password);
foreach (RelationType type in ws.relation.getRelationTypes(RelationType.MANY_TO_MANY))
{
if (type.title.Equals("staple"))
{
ws.relation.addGroup("055e4384-7c70-4456-b32b-f5a55a79861f", "staple group", type.id);
}
}
}
catch (Exception e)
{
System.Console.WriteLine(e.ToString());
}
}
}
}

addNodeToGroup

Description:

Method	Return values	Description
addNodeToGroup(String nodeId, long groupId)	void	Adds a node to an existing relation group.

A relation group only makes sense with the relation type RelationType.MANY_TO_MANY.

Note

More information on Relation types.

Example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using com.openkm.sdk4csharp;
using com.openkm.sdk4csharp.bean;

namespace OKMRest
{
public class Program
{
static void Main(string[] args)
{
String host = "http://localhost:8080/openkm";
String username = "okmAdmin";
String password = "admin";
OKMWebservice ws = OKMWebservicesFactory.newInstance(host);

try
{
ws.login(user, password);
foreach (RelationGroup rGroup in ws.relation.getRelationGroups("055e4384-7c70-4456-b32b-f5a55a79861f"))
{
if (rGroup.name.Equals("staple group"))
{
ws.relation.addNodeToGroup("50b7a5b9-89d2-430e-bbc9-6a6e01662a71", rGroup.id);
}
}
}
catch (Exception e)
{
System.Console.WriteLine(e.ToString());
}
}
}
}

deleteGroup

Description:

Method	Return values	Description
deleteGroup(long groupId)	void	Removes a node from a relation group.

Example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using com.openkm.sdk4csharp;
using com.openkm.sdk4csharp.bean;

namespace OKMRest
{
public class Program
{
static void Main(string[] args)
{
String host = "http://localhost:8080/openkm";
String username = "okmAdmin";
String password = "admin";
OKMWebservice ws = OKMWebservicesFactory.newInstance(host);

try
{
ws.login(user, password);
foreach (RelationGroup rGroup in ws.relation.getRelationGroups("50b7a5b9-89d2-430e-bbc9-6a6e01662a71"))
{
if (rGroup.name.Equals("staple group"))
{
ws.relation.deleteGroup(rGroup.id);
}
}
}
catch (Exception e)
{
System.Console.WriteLine(e.ToString());
}
}
}
}

getGroup

Description:

Method	Return values	Description
getGroup(long groupId)	RelationGroup	Finds a relation group by ID.

Example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using com.openkm.sdk4csharp;
using com.openkm.sdk4csharp.bean;

namespace OKMRest
{
public class Program
{
static void Main(string[] args)
{
String host = "http://localhost:8080/openkm";
String username = "okmAdmin";
String password = "admin";
OKMWebservice ws = OKMWebservicesFactory.newInstance(host);

try
{
ws.login(user, password);
RelationGroup rg = new RelationGroup();
foreach (RelationGroup rGroup in ws.getRelationGroups("50b7a5b9-89d2-430e-bbc9-6a6e01662a71"))
{
if (rGroup.name.Equals("staple group3"))
{
rg = ws.relation.getGroup(rGroup.id);
break;
}
}
}
catch (Exception e)
{
System.Console.WriteLine(e.ToString());
}
}
}
}

setGroupName

Description:

Method	Return values	Description
setGroupName(long groupId, String groupName)	void	Changes the relation group name.

Example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using com.openkm.sdk4csharp;
using com.openkm.sdk4csharp.bean;

namespace OKMRest
{
public class Program
{
static void Main(string[] args)
{
String host = "http://localhost:8080/openkm";
String username = "okmAdmin";
String password = "admin";
OKMWebservice ws = OKMWebservicesFactory.newInstance(host);

try
{
ws.login(user, password);
RelationGroup rg = new RelationGroup();
foreach (RelationGroup rGroup in ws.relation.getRelationGroups("50b7a5b9-89d2-430e-bbc9-6a6e01662a71"))
{
if (rGroup.name.Equals("staple group3"))
{
ws.relation.setGroupName(rGroup.id, "newGroup");
rg = ws.relation.getGroup(rGroup.id);
break;
}
}
}
catch (Exception e)
{
System.Console.WriteLine(e.ToString());
}
}
}
}

getAllRelationGroups

Description:

Method	Return values	Description
getAllRelationGroups(int relationTypeId, String filter, int offset, int limit)	RelationGroupResultSet	Retrieves a list of all relation groups.

Tip

The parameters “limit” and “offset” allow you to retrieve just a portion of the results of a query.

• The parameter “limit” limits the number of results returned.
• The parameter “offset” specifies how many results to skip before beginning to return results.

Note

For example, if your query has 1000 results, but you only want to return the first 10, you should use these values:

• limit=10
• offset=0

Now suppose you want to show the results from 11-20; you should use these values:

• limit=10
• offset=10

Example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using com.openkm.sdk4csharp;
using com.openkm.sdk4csharp.bean;

namespace OKMRest
{
public class Program
{
static void Main(string[] args)
{
String host = "http://localhost:8080/openkm";
String username = "okmAdmin";
String password = "admin";
OKMWebservice ws = OKMWebservicesFactory.newInstance(host);

try
{
ws.login(user, password);
int relationTypeId = 1;
String filter = "";
RelationGroupResultSet resultSet = ws.relation.getAllRelationGroups(relationTypeId, filter, 0, 10);
foreach (RelationGroup relationGroup in resultSet.results)
{
Console.WriteLine(relationGroup.toString());
}
}
catch (Exception e)
{
System.Console.WriteLine(e.ToString());
}
}
}
}

deleteItemFromGroup

Description:

Method	Return values	Description
deleteItemFromGroup(String nodeId, long groupId)	void	Removes a node from a relation group.

Example:

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using com.openkm.sdk4csharp;
using com.openkm.sdk4csharp.bean;

namespace OKMRest
{
public class Program
{
static void Main(string[] args)
{
String host = "http://localhost:8080/openkm";
String username = "okmAdmin";
String password = "admin";
OKMWebservice ws = OKMWebservicesFactory.newInstance(host);

try
{
ws.login(user, password);
foreach (RelationGroup rGroup in ws.relation.getRelationGroups("50b7a5b9-89d2-430e-bbc9-6a6e01662a71"))
{
if (rGroup.name.Equals("staple group3"))
{
ws.relation.deleteItemFromGroup("50b7a5b9-89d2-430e-bbc9-6a6e01662a71", rGroup.id);
}
}
}
catch (Exception e)
{
System.Console.WriteLine(e.ToString());
}
}
}
}