Package org.cometd.server.filter

Class JSONDataFilter

java.lang.Object

org.cometd.server.filter.JSONDataFilter

All Implemented Interfaces:

DataFilter

Direct Known Subclasses:

NoMarkupFilter, NoScriptsFilter, RegexFilter

public class JSONDataFilter
extends java.lang.Object
implements DataFilter

JSONDataFilter walks an object to see if it is a JSON data structure and calls the appropriate methods filterString(ServerSession, ServerChannel, String), filterNumber(ServerSession, ServerChannel, Number), filterBoolean(ServerSession, ServerChannel, Boolean), filterArray(ServerSession, ServerChannel, Object), filterCollection(ServerSession, ServerChannel, Collection), filterList(ServerSession, ServerChannel, List), filterMap(ServerSession, ServerChannel, Map).

Derived filters may override one or more of these methods to provide filtering of specific types.

Nested Class Summary

Nested classes/interfaces inherited from interface org.cometd.server.filter.DataFilter

DataFilter.AbortException

Constructor Summary

Constructors

Constructor	Description
JSONDataFilter()

Method Summary

Modifier and Type	Method	Description
java.lang.Object	filter(ServerSession session, ServerChannel channel, java.lang.Object data)	Modifies the given message data.
protected java.lang.Object	filterArray(ServerSession session, ServerChannel channel, java.lang.Object array)
protected java.lang.Object	filterBoolean(ServerSession session, ServerChannel channel, java.lang.Boolean bool)
protected java.lang.Object	filterCollection(ServerSession session, ServerChannel channel, java.util.Collection<java.lang.Object> collection)
protected java.lang.Object	filterList(ServerSession session, ServerChannel channel, java.util.List<java.lang.Object> list)
protected java.lang.Object	filterMap(ServerSession session, ServerChannel channel, java.util.Map<java.lang.String,java.lang.Object> map)
protected java.lang.Object	filterNumber(ServerSession session, ServerChannel channel, java.lang.Number number)
protected java.lang.Object	filterObject(ServerSession session, ServerChannel channel, java.lang.Object data)
protected java.lang.Object	filterString(ServerSession session, ServerChannel channel, java.lang.String string)
void	init(java.lang.Object init)

Methods inherited from class java.lang.Object

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

Constructor Detail

JSONDataFilter

public JSONDataFilter()

Method Detail

init

public void init(java.lang.Object init)

filter

public java.lang.Object filter(ServerSession session,
                               ServerChannel channel,
                               java.lang.Object data)

Description copied from interface: DataFilter

Modifies the given message data.

Returning null or throwing DataFilter.AbortException results in the message processing being interrupted and the message itself discarded.

If the returned object is different (as returned by the != operator) from the data parameter then it is set as the new message data via Message.Mutable.setData(Object).

Specified by:

filter in interface DataFilter

Parameters:

session - the ServerSession that sends the data

channel - the channel the data is being sent on

data - the data being sent

Returns:

the transformed data or null if the message should be ignored

filterString

protected java.lang.Object filterString(ServerSession session,
                                        ServerChannel channel,
                                        java.lang.String string)

filterBoolean

protected java.lang.Object filterBoolean(ServerSession session,
                                         ServerChannel channel,
                                         java.lang.Boolean bool)

filterNumber

protected java.lang.Object filterNumber(ServerSession session,
                                        ServerChannel channel,
                                        java.lang.Number number)

filterArray

protected java.lang.Object filterArray(ServerSession session,
                                       ServerChannel channel,
                                       java.lang.Object array)

filterList

protected java.lang.Object filterList(ServerSession session,
                                      ServerChannel channel,
                                      java.util.List<java.lang.Object> list)

filterCollection

protected java.lang.Object filterCollection(ServerSession session,
                                            ServerChannel channel,
                                            java.util.Collection<java.lang.Object> collection)

filterMap

protected java.lang.Object filterMap(ServerSession session,
                                     ServerChannel channel,
                                     java.util.Map<java.lang.String,java.lang.Object> map)

filterObject

protected java.lang.Object filterObject(ServerSession session,
                                        ServerChannel channel,
                                        java.lang.Object data)