org.mmbase.module.builders
Class MMServers

java.lang.Object
  org.mmbase.module.core.MMTable
      org.mmbase.module.core.MMObjectBuilder
          org.mmbase.module.builders.MMServers

All Implemented Interfaces:

MMBaseObserver, java.lang.Runnable

public class MMServers

extends MMObjectBuilder

implements MMBaseObserver, java.lang.Runnable

Version:

$Id: MMServers.java,v 1.27.2.1 2004/10/09 10:51:45 nico Exp $

Author:

michiel, nico

Warning: No Java Documentation Available.

Field Summary

static int	ACTIVE
static int	ERROR
static int	INACTIVE
static int	UNKNOWN

Fields inherited from class org.mmbase.module.core.MMObjectBuilder

AGE_PARAMETERS, broadcastChanges, database, DEFAULT_ALINEA, DEFAULT_EOL, description, descriptions, fields, GUI_PARAMETERS, listCache, nodeCache, OBJ2TYPE_MAX_SIZE, oType, REPLACE_CACHE, searchAge, sortedDBLayout, TEMPNODE_DEFAULT_SIZE, TemporaryNodes, virtual

Fields inherited from class org.mmbase.module.core.MMTable

mmb, tableName

Constructor Summary

MMServers()

Method Summary

java.util.List	getActiveServers()
java.lang.String	getGUIIndicator(java.lang.String field, MMObjectNode node) What should a GUI display for this node/field combo.
long	getIntervalTime()
MMObjectNode	getMMServerNode(java.lang.String name)
java.lang.String	getMMServerProperty(java.lang.String mmserver, java.lang.String key)
java.lang.Object	getValue(MMObjectNode node, java.lang.String field) Provides additional functionality when obtaining field values.
boolean	init() Initializes this builder The property 'mmb' needs to be set for the builder before this method can be called.
boolean	nodeChanged(java.lang.String machine, java.lang.String number, java.lang.String builder, java.lang.String ctype)
boolean	nodeLocalChanged(java.lang.String machine, java.lang.String number, java.lang.String builder, java.lang.String ctype) Called when a local node is changed.
boolean	nodeRemoteChanged(java.lang.String machine, java.lang.String number, java.lang.String builder, java.lang.String ctype) Called when a remote node is changed.
void	run() run, checkup probe runs every intervaltime to set the state of the server (used in clusters)
void	setCheckService(java.lang.String name)
protected void	start() Starts the thread for the task scheduler

Methods inherited from class org.mmbase.module.core.MMObjectBuilder

addField, addLocalObserver, addRemoteObserver, buildSet, checkAddTmpField, commit, convertMMNode2SQL, count, count, create, createAlias, delete, deleteNodeCache, drop, equals, equals, executeFunction, executeFunction, fieldLocalChanged, getAge, getAliasedNode, getAncestors, getCacheNumbers, getCacheSize, getCacheSize, getClassName, getConfigFile, getDBByte, getDBKey, getDBState, getDBText, getDBType, getDefaultTeaser, getDefaultUrl, getDescendants, getDescription, getDescription, getDescriptions, getEditFields, getField, getFieldNames, getFields, getFields, getFunctionParameters, getGUIIndicator, getHardNode, getHardNode, getHTML, getInitParameter, getInitParameters, getList, getLocaleGUIIndicator, getLocaleGUIIndicator, getMachineName, getMaintainer, getMMBase, getNewNode, getNewTmpNode, getNextField, getNextField, getNode, getNode, getNode, getNode, getNodes, getNodes, getNodeType, getNumberFromName, getObjectType, getObjectValue, getParameterDefinition, getParentBuilder, getPluralName, getPluralName, getPluralNames, getQuery, getQuery, getQuery, getRawNodes, getRelations_main, getSearchAge, getShort, getShortedByte, getShortedText, getSingularName, getSingularName, getSingularNames, getSmartPath, getSortedFields, getSortedListFields, getTmpNode, getURLEncode, getVersion, getWAP, getXMLPath, hashCode, hostname_function, insert, insert, insertDone, isExtensionOf, isNodeCached, isVirtual, preCommit, preEdit, process, processSearchResults, putTmpNode, readSearchResults, removeField, removeNode, removeRelations, removeSyncNodes, removeTmpNode, replace, safeCache, safeCommit, safeInsert, search, search, search, searchIn, searchIn, searchIn, searchList, searchList, searchNumbers, searchVector, searchVector, searchVector, searchVector, searchVectorIn, searchVectorIn, searchVectorIn, searchVectorIn, searchWithWhere, sendFieldChangeSignal, setDBLayout_xml, setDefaults, setDescription, setDescriptions, setInitParameter, setMaintainer, setMMBase, setParentBuilder, setPluralNames, setSearchAge, setSingularNames, setTableName, setUniqueValue, setUniqueValue, setValue, setValue, setVersion, setXMLPath, setXMLValues, signalNewObject, testValidData, toString, toString, toXML, updateFields, waitUntilNodeChanged, wrap

Methods inherited from class org.mmbase.module.core.MMTable

created, getFullTableName, getTableName, size

Methods inherited from class java.lang.Object

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

Field Detail

UNKNOWN

public static final int UNKNOWN

See Also:

Constant Field Values

ACTIVE

public static final int ACTIVE

See Also:

Constant Field Values

INACTIVE

public static final int INACTIVE

See Also:

Constant Field Values

ERROR

public static final int ERROR

See Also:

Constant Field Values

Constructor Detail

MMServers

public MMServers()

Warning: No Java Documentation Available.

Method Detail

init

public boolean init()

Description copied from class: MMObjectBuilder

Initializes this builder The property 'mmb' needs to be set for the builder before this method can be called. The method retrieves data from the TypeDef builder, or adds data to that builder if the current builder is not yet registered.

Overrides:

init in class MMObjectBuilder

Returns:

true if init was completed, false if uncompleted.

See Also:

MMObjectBuilder.create()

start

protected void start()

Starts the thread for the task scheduler

getGUIIndicator

public java.lang.String getGUIIndicator(java.lang.String field,
                                        MMObjectNode node)

Description copied from class: MMObjectBuilder

What should a GUI display for this node/field combo. Default is null (indicating to display the field as is) Override this to display your own choice.

Overrides:

getGUIIndicator in class MMObjectBuilder

Parameters:

node - The node to display

field - the name field of the field to display

Returns:

the display of the node's field as a String, null if not specified

Warning: No Java Documentation Available.

getValue

public java.lang.Object getValue(MMObjectNode node,
                                 java.lang.String field)

Description copied from class: MMObjectBuilder

Provides additional functionality when obtaining field values. This method is called whenever a Node of the builder's type fails at evaluating a getValue() request (generally when a fieldname is supplied that doesn't exist). It allows the system to add 'functions' to be included with a field name, such as 'html(body)' or 'time(lastmodified)'. This method will parse the fieldname, determining functions and calling the MMObjectBuilder.executeFunction(org.mmbase.module.core.MMObjectNode, java.lang.String, java.util.List) method to handle it. Functions in fieldnames can be given in the format 'functionname(fieldname)'. An old format allows 'functionname_fieldname' instead, though this only applies to the text functions 'short', 'html', and 'wap'. Functions can be nested, i.e. 'html(shorted(body))'. Derived builders should override this method only if they want to provide virtual fieldnames. To provide addiitonal functions, override MMObjectBuilder.executeFunction(org.mmbase.module.core.MMObjectNode, java.lang.String, java.util.List) instead.

Overrides:

getValue in class MMObjectBuilder

Parameters:

node - the node whos efields are queries

field - the fieldname that is requested

Returns:

the result of the 'function', or null if no valid functions could be determined.

Warning: No Java Documentation Available.

run

public void run()

run, checkup probe runs every intervaltime to set the state of the server (used in clusters)

Specified by:

run in interface java.lang.Runnable

setCheckService

public void setCheckService(java.lang.String name)

Warning: No Java Documentation Available.

nodeRemoteChanged

public boolean nodeRemoteChanged(java.lang.String machine,
                                 java.lang.String number,
                                 java.lang.String builder,
                                 java.lang.String ctype)

Description copied from interface: MMBaseObserver

Called when a remote node is changed.

Specified by:

nodeRemoteChanged in interface MMBaseObserver

Overrides:

nodeRemoteChanged in class MMObjectBuilder

Parameters:

machine - Name of the machine that changed the node.

number - Number of the changed node as a String

builder - type of the changed node

ctype - command type, 'c'=changed, 'd'=deleted', 'r'=relations changed, 'n'=new

Returns:

always true

nodeLocalChanged

public boolean nodeLocalChanged(java.lang.String machine,
                                java.lang.String number,
                                java.lang.String builder,
                                java.lang.String ctype)

Description copied from interface: MMBaseObserver

Called when a local node is changed.

Specified by:

nodeLocalChanged in interface MMBaseObserver

Overrides:

nodeLocalChanged in class MMObjectBuilder

Parameters:

machine - Name of the machine that changed the node.

number - Number of the changed node as a String

builder - type of the changed node

ctype - command type, 'c'=changed, 'd'=deleted', 'r'=relations changed, 'n'=new

Returns:

always true

nodeChanged

public boolean nodeChanged(java.lang.String machine,
                           java.lang.String number,
                           java.lang.String builder,
                           java.lang.String ctype)

getMMServerProperty

public java.lang.String getMMServerProperty(java.lang.String mmserver,
                                            java.lang.String key)

Warning: No Java Documentation Available.

getMMServerNode

public MMObjectNode getMMServerNode(java.lang.String name)

Warning: No Java Documentation Available.

getIntervalTime

public long getIntervalTime()

Returns:

Returns the intervalTime.

getActiveServers

public java.util.List getActiveServers()

Returns: