org.mmbase.module.core
Class VirtualRefererBuilder

java.lang.Object
  |
  +--org.mmbase.module.core.MMTable
        |
        +--org.mmbase.module.core.MMObjectBuilder
              |
              +--org.mmbase.module.core.VirtualBuilder
                    |
                    +--org.mmbase.module.core.VirtualRefererBuilder

public class VirtualRefererBuilder

extends VirtualBuilder

VirtualBuilder is a builder which creates 'virtual' nodes. This class is intended to facilitate practical creation of virtual builders by capturing events that migth otherwise lead to unexpected or faulty behavior.

Version:

11 May 2001

Author:

Pierre van Rooden

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

broadcastChanges, database, DEFAULT_ALINEA, DEFAULT_EOL, description, descriptions, fields, nodeCache, obj2type, 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

VirtualRefererBuilder(MMObjectBuilder originalBuilder)
Creates an instance of a Virtual builder.

Method Summary

java.lang.String	getGUIIndicator(MMObjectNode node) What should a GUI display for this node.
java.lang.Object	getOriginalBuilder() Returns the original builder
java.lang.Object	getValue(MMObjectNode node, java.lang.String field) Provides additional functionality when obtaining field values.

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

create, getDBState, getGUIInicator, getNewNode, getShortedByte, getShortedText, init, insert

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

addField, addLocalObserver, addRemoteObserver, buildSet, checkAddTmpField, commit, convertMMNode2SQL, count, createAlias, created, deleteNodeCache, drop, equals, equals, executeFunction, executeFunction, fieldLocalChanged, getAge, getAliasedNode, getAncestors, getCacheNumbers, getCacheSize, getCacheSize, getClassName, getConfigFile, getDBByte, getDBKey, getDBText, getDBType, getDefaultTeaser, getDefaultUrl, getDescendants, getDescription, getDescription, getDescriptions, getEditFields, getField, getFieldNames, getFields, getFields, getFullTableName, getFunctionParameters, getGUIIndicator, getHardNode, getHardNode, getHTML, getInitParameter, getInitParameters, getList, getLocaleGUIIndicator, getLocaleGUIIndicator, getMachineName, getMaintainer, getNewTmpNode, getNextField, getNextField, getNode, getNode, getNode, getNode, getNodes, getNodeType, getNumberFromName, getObjectType, getObjectValue, getParentBuilder, getPluralName, getPluralName, getPluralNames, getQuery, getQuery, getQuery, getRelations_main, getSearchAge, getShort, getSingularName, getSingularName, getSingularNames, getSmartPath, getSortedFields, getSortedListFields, getTableName, getTmpNode, getURLEncode, getVersion, getWAP, getXMLPath, hashCode, hostname_function, insert, insertDone, isExtensionOf, isNodeCached, isVirtual, nodeLocalChanged, nodeRemoteChanged, preCommit, preEdit, process, putTmpNode, readSearchResults, removeField, removeNode, removeRelations, 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, setValue, setValue, setVersion, setXMLPath, setXMLValues, signalNewObject, testValidData, toString, toString, toXML, updateFields, waitUntilNodeChanged, wrap

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

size

Methods inherited from class java.lang.Object

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

Constructor Detail

VirtualRefererBuilder

public VirtualRefererBuilder(MMObjectBuilder originalBuilder)

Creates an instance of a Virtual builder. A builder instantiated with this constrcutor is not registered in MMBase and should only be used as a temporary parent for virtual nodes which do not have a long life span.

Parameters:

m - the MMbase cloud creating the node

Method Detail

getGUIIndicator

public java.lang.String getGUIIndicator(MMObjectNode node)

What should a GUI display for this node.

Overrides:

getGUIIndicator in class MMObjectBuilder

Parameters:

node - The node to display

Returns:

either the name field of the node or "no info"

getValue

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

Provides additional functionality when obtaining field values.

Overrides:

getValue in class MMObjectBuilder

Parameters:

node - the node who setfields are queried

field - the fieldname that is requested

Returns:

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

getOriginalBuilder

public java.lang.Object getOriginalBuilder()

Returns the original builder

Parameters:

node - the node who setfields are queried

field - the fieldname that is requested

Returns:

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