ch.agent.crnickl.mongodb
Class ReadMethodsForValueType

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

All Implemented Interfaces:

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

public class ReadMethodsForValueType
extends MongoDatabaseMethods

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

Author:

Jean-Paul Vetterli

Nested Class Summary

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

MongoDatabaseMethods.Operator

Constructor Summary

ReadMethodsForValueType()

Method Summary

<T> ch.agent.crnickl.api.ValueType<T>	getValueType(ch.agent.crnickl.api.Database database, String name) Find a value type with a given name.
<T> ch.agent.crnickl.api.ValueType<T>	getValueType(ch.agent.crnickl.api.Surrogate s) Find a value type corresponding to a surrogate.
Collection<ch.agent.crnickl.api.ValueType<?>>	getValueTypes(ch.agent.crnickl.api.Database database, String pattern) Find a collection of value types with names matching a pattern.

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

ReadMethodsForValueType

public ReadMethodsForValueType()

Method Detail

getValueType

public <T> ch.agent.crnickl.api.ValueType<T> getValueType(ch.agent.crnickl.api.Database database,
                                                          String name)
                                               throws ch.agent.crnickl.T2DBException

Find a value type with a given name.

Parameters:

database - a database

name - a string

Returns:

a value type or null

Throws:

ch.agent.crnickl.T2DBException

getValueTypes

public Collection<ch.agent.crnickl.api.ValueType<?>> getValueTypes(ch.agent.crnickl.api.Database database,
                                                                   String pattern)
                                                            throws ch.agent.crnickl.T2DBException

Find a collection of value types with names matching a pattern. If the pattern is enclosed in slashes it is taken as a standard regexp pattern; the slashes will be removed. If it is not enclosed in slashes, it is taken as a minimal pattern and all occurrences of "*" will be replaced with ".*" (zero or more arbitrary characters).

Parameters:

database - a database

pattern - a simple pattern or a regexp pattern

Returns:

a collection of value types, possibly empty, never null

Throws:

ch.agent.crnickl.T2DBException

getValueType

public <T> ch.agent.crnickl.api.ValueType<T> getValueType(ch.agent.crnickl.api.Surrogate s)
                                               throws ch.agent.crnickl.T2DBException

Find a value type corresponding to a surrogate.

Parameters:

s - a surrogate

Returns:

a value type or null

Throws:

ch.agent.crnickl.T2DBException