ch.agent.crnickl.mongodb
Class WriteMethodsForValueType

java.lang.Object
  ch.agent.crnickl.impl.DatabaseMethodsImpl
      ch.agent.crnickl.mongodb.MongoDatabaseMethods
          ch.agent.crnickl.mongodb.WriteMethodsForValueType

All Implemented Interfaces:

ch.agent.crnickl.impl.DatabaseMethods, ch.agent.crnickl.impl.PermissionChecker

public class WriteMethodsForValueType
extends MongoDatabaseMethods

A stateless object with methods providing write access to value types.

A value type in MongoDB is stored as:

 { _id : OID, 
   name : STRING, 
   type : STRING, 
   values? : { 
      STRING : STRING, ... 
    } 
 }
 

The values field exists only in restricted value types.

Author:

Jean-Paul Vetterli

Nested Class Summary

Nested classes/interfaces inherited from class ch.agent.crnickl.mongodb.MongoDatabaseMethods

MongoDatabaseMethods.Operator

Constructor Summary

WriteMethodsForValueType()

Method Summary

<T> void	createValueType(ch.agent.crnickl.api.ValueType<T> vt) Create a value type in the database.
<T> void	deleteValueType(ch.agent.crnickl.api.ValueType<T> vt, ch.agent.crnickl.impl.SchemaUpdatePolicy policy) Delete a value type from the database.
<T> void	updateValueType(ch.agent.crnickl.api.ValueType<T> vt, ch.agent.crnickl.impl.SchemaUpdatePolicy policy) Update a value type in the database.

Methods inherited from class ch.agent.crnickl.mongodb.MongoDatabaseMethods

addOperation, asQuery, compositeName, extractRegexp, getId, getId, getIdOrZero, getMongoDB, getMongoDB, getMongoDB, getObject, getObjectId, makeSurrogate, mongoObject, operation

Methods inherited from class ch.agent.crnickl.impl.DatabaseMethodsImpl

check, check, check, check, checkIntegrity, makeSurrogate, makeSurrogate

Methods inherited from class java.lang.Object

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

Constructor Detail

WriteMethodsForValueType

public WriteMethodsForValueType()

Method Detail

createValueType

public <T> void createValueType(ch.agent.crnickl.api.ValueType<T> vt)
                     throws ch.agent.crnickl.T2DBException

Create a value type in the database. Throw an exception if the operation fails.

Parameters:

vt - a value type

Throws:

ch.agent.crnickl.T2DBException

deleteValueType

public <T> void deleteValueType(ch.agent.crnickl.api.ValueType<T> vt,
                                ch.agent.crnickl.impl.SchemaUpdatePolicy policy)
                     throws ch.agent.crnickl.T2DBException

Delete a value type from the database. Throw an exception if the operation fails.

Parameters:

vt - a value type

policy - a schema udpdating policy

Throws:

ch.agent.crnickl.T2DBException

updateValueType

public <T> void updateValueType(ch.agent.crnickl.api.ValueType<T> vt,
                                ch.agent.crnickl.impl.SchemaUpdatePolicy policy)
                     throws ch.agent.crnickl.T2DBException

Update a value type in the database. Throw an exception if the operation cannot be done. Updating a value type is an expensive operation, because in case

Parameters:

vt - a value type

policy - a schema udpdating policy

Throws:

ch.agent.crnickl.T2DBException