org.mmbase.module.builders
Class Images

java.lang.Object
  org.mmbase.util.functions.FunctionProvider
      org.mmbase.module.core.MMTable
          org.mmbase.module.core.MMObjectBuilder
              org.mmbase.module.builders.AbstractServletBuilder
                  org.mmbase.module.builders.AbstractImages
                      org.mmbase.module.builders.Images

All Implemented Interfaces:

EventListener, NodeEventListener, RelationEventListener, ImagesInterface

public class Images
extends AbstractImages

If this class is used as the class for your builder, then an 'handle' byte field is assumed to contain an image. You builder will work together with 'icaches', and with imagemagick (or jai). This means that is has the following properties: ImageConvertClass, ImageConvert.ConverterCommand, ImageConvert.ConverterRoot and MaxConcurrentRequests

Version:

$Id: Images.java 40155 2009-12-08 15:55:13Z michiel $

Author:

Daniel Ockeloen, Rico Jansen, Michiel Meeuwissen

Nested Class Summary

Nested classes/interfaces inherited from class org.mmbase.module.builders.AbstractImages

AbstractImages.CKeyCache

Field Summary

static Parameter[]	CACHE_PARAMETERS
static Parameter[]	CACHEDNODE_PARAMETERS
protected String	defaultImageType Supposed image type if not could be determined (configurable)
(package private) static Timer	deleter
static Parameter[]	DIMENSION_PARAMETERS
(package private) static Map<File,Dimension>	dimensions
static Parameter[]	GUI_PARAMETERS
static Parameter[]	HEIGHT_PARAMETERS
static Parameter[]	WIDTH_PARAMETERS

Fields inherited from class org.mmbase.module.builders.AbstractImages

FIELD_FILESIZE, FIELD_HEIGHT, FIELD_ITYPE, FIELD_WIDTH, handleCache, IMAGE_HANDLE_FIELDS

Fields inherited from class org.mmbase.module.builders.AbstractServletBuilder

externalUrlField, FIELD_FILENAME, FIELD_HANDLE, FIELD_MIMETYPE, FORMAT_PARAMETERS, legalizeFileName, MIMETYPE_PARAMETERS, PROPERTY_EXTERNAL_URL_FIELD, usesBridgeServlet

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

AGE_PARAMETERS, broadCastChanges, DEFAULT_ALINEA, DEFAULT_EOL, description, descriptions, EVENT_TYPE_LOCAL, EVENT_TYPE_REMOTE, FIELD_NUMBER, FIELD_OBJECT_TYPE, FIELD_OWNER, fields, genericBlobCache, getFunctions, GUI_INDICATOR, guiFunction, infoFunction, internalVersion, nodeCache, oType, pluralNames, searchAge, singularNames, SYSTEM_OWNER, TEMPNODE_DEFAULT_SIZE, TMP_FIELD_EXISTS, TMP_FIELD_NUMBER, virtual, WRAP_PARAMETERS, wrapFunction

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

maxNodesFromQuery, mmb, storageConnector, tableName

Fields inherited from class org.mmbase.util.functions.FunctionProvider

functions

Constructor Summary

Images()

Method Summary

boolean	commit(MMObjectNode node) Commit changes to this node to the storage layer.
static File	createTemporaryFile(SerializableInputStream in, String template)
protected Object	executeFunction(MMObjectNode node, String function, List<?> args) The executeFunction of this builder adds the 'cache' function.
protected void	fillImageCacheNode(MMObjectNode image, MMObjectNode icacheNode, String template)
MMObjectNode	getCachedNode(MMObjectNode node, String template) Returns a icache node for given image node and conversion template.
String	getDefaultImageType() The default image type is used when magic could not determin the type
protected Dimension	getDimension(MMObjectNode node, String template)
protected String	getGuiForNewImage(MMObjectNode node, String alt, Parameters args)
protected String	getGUIIndicatorWithAlt(MMObjectNode node, String alt, Parameters args) The GUI-indicator of an image-node also needs a res/req object.
protected String	getSGUIIndicatorForNode(MMObjectNode node, Parameters args) Returns GUI Indicator for node
boolean	init() Read configurations (imageConvertClass, maxConcurrentRequest), checks for 'icaches', inits the request-processor-pool.
(package private) void	invalidateTemplateCacheNumberCache(int number)
(package private) void	invalidateTemplateCacheNumberCache(String ckey)
void	notify(NodeEvent event)
void	removeNode(MMObjectNode node) Override the MMObjectBuilder removeNode, to invalidate the Image Cache AFTER a deletion of the image node.
void	shutdown() clean all acquired resources, because system is shutting down

Methods inherited from class org.mmbase.module.builders.AbstractImages

checkHandle, getAssociation, getBlobCache, getDefaultPath, getDimension, getDimensionForEmptyHandle, getFileSize, getHandleFields, getImageFormat, getMimeType, getSGUIIndicator, handleEmpty, storesDimension, storesFileSize, storesImageType

Methods inherited from class org.mmbase.module.builders.AbstractServletBuilder

addFileName, getBinary, getDefaultFileName, getFileName, getGUIIndicator, getGUIIndicator, getServletPath, getServletPath, getSession, getSuperGUIIndicator, insert

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

addEventListener, addField, addLocalObserver, addRemoteObserver, broadcastChanges, checkAddTmpField, clearBlobCache, create, createAlias, createAlias, delete, equals, equals, executeFunction, fieldLocalChanged, getAncestors, getClassName, getConfigFile, getConfigResource, getDataTypeCollector, getDBState, getDBType, getDefaultTeaser, getDefaultUrl, getDescendants, getDescription, getDescription, getDescriptions, getEmptyNode, getField, getFieldNames, getFields, getFields, getFunction, getFunctionParameters, getFunctions, getGUIIndicator, getHTML, getInitParameter, getInitParameters, getInitParameters, getInternalVersion, getList, getLocaleGUIIndicator, getLocaleGUIIndicator, getMachineName, getMaintainer, getNewNode, getNewTmpNode, getNextField, getNextField, getNode, getNode, getNode, getNodeFromCache, getNodeGUIIndicator, getNumber, getObjectType, getObjectValue, getParentBuilder, getPluralName, getPluralName, getPluralNames, getRelations_main, getSearchAge, getShort, getShortedByte, getShortedInputStream, getShortedText, getSingularName, getSingularName, getSingularNames, getSmartPath, getTmpNode, getURLEncode, getValue, getVersion, getWAP, getXMLPath, hasField, hashCode, hashCode, hostname_function, insert, isExtensionOf, isNodeCached, isNull, isVirtual, loadInitParameters, newFunctionInstance, nodeLocalChanged, nodeRemoteChanged, notify, preCommit, process, removeEventListener, removeField, removeLocalObserver, removeRelations, removeRemoteObserver, removeSyncNodes, replace, safeCache, sendFieldChangeSignal, setDefaults, setDescription, setDescriptions, setFields, setInitParameter, setMaintainer, setPluralNames, setSearchAge, setSingularNames, setUniqueValue, setUniqueValue, setValue, setValue, setVersion, setXMLPath, testValidData, toString, toString, update, updateFields, wrap

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

count, count, created, getFullTableName, getMMBase, getNode, getNodes, getNodes, getNodes, getNodeType, getStorageConnector, getTableName, search, searchVector, setMMBase, setTableName, size

Methods inherited from class org.mmbase.util.functions.FunctionProvider

addFunction, createParameters, getFunction, getFunctions, getFunctionValue

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mmbase.module.builders.ImagesInterface

getBinary, getFileName

Field Detail

CACHE_PARAMETERS

public static final Parameter[] CACHE_PARAMETERS

CACHEDNODE_PARAMETERS

public static final Parameter[] CACHEDNODE_PARAMETERS

HEIGHT_PARAMETERS

public static final Parameter[] HEIGHT_PARAMETERS

WIDTH_PARAMETERS

public static final Parameter[] WIDTH_PARAMETERS

DIMENSION_PARAMETERS

public static final Parameter[] DIMENSION_PARAMETERS

GUI_PARAMETERS

public static final Parameter[] GUI_PARAMETERS

defaultImageType

protected String defaultImageType

Supposed image type if not could be determined (configurable)

dimensions

static Map<File,Dimension> dimensions

deleter

static Timer deleter

Constructor Detail

Images

public Images()

Method Detail

init

public boolean init()

Read configurations (imageConvertClass, maxConcurrentRequest), checks for 'icaches', inits the request-processor-pool.

Overrides:

init in class AbstractServletBuilder

Returns:

true if init was completed, false if uncompleted.

See Also:

MMObjectBuilder.create()

shutdown

public void shutdown()

Description copied from class: MMObjectBuilder

clean all acquired resources, because system is shutting down

Overrides:

shutdown in class MMObjectBuilder

executeFunction

protected Object executeFunction(MMObjectNode node,
                                 String function,
                                 List<?> args)

The executeFunction of this builder adds the 'cache' function. The cache function accepts a conversion template as argument and returns the cached image node number. Using this you order to pre-cache an image.

Overrides:

executeFunction in class AbstractImages

Since:

MMBase-1.6

See Also:

MMObjectBuilder.executeFunction(org.mmbase.module.core.MMObjectNode, java.lang.String, java.util.List)

getDimension

protected Dimension getDimension(MMObjectNode node,
                                 String template)

Since:

MMBase-1.7.4

fillImageCacheNode

protected void fillImageCacheNode(MMObjectNode image,
                                  MMObjectNode icacheNode,
                                  String template)

Since:

MMBase-1.9.2

getCachedNode

public MMObjectNode getCachedNode(MMObjectNode node,
                                  String template)

Returns a icache node for given image node and conversion template. If such a node does not exist, it is created.

Since:

MMBase-1.8

createTemporaryFile

public static File createTemporaryFile(SerializableInputStream in,
                                       String template)
                                throws IOException

Throws:

IOException

getGuiForNewImage

protected String getGuiForNewImage(MMObjectNode node,
                                   String alt,
                                   Parameters args)
                            throws IOException

Throws:

IOException

Since:

MMBase-1.9.2

getGUIIndicatorWithAlt

protected String getGUIIndicatorWithAlt(MMObjectNode node,
                                        String alt,
                                        Parameters args)

The GUI-indicator of an image-node also needs a res/req object.

Specified by:

getGUIIndicatorWithAlt in class AbstractImages

Since:

MMBase-1.6

getSGUIIndicatorForNode

protected String getSGUIIndicatorForNode(MMObjectNode node,
                                         Parameters args)

Description copied from class: AbstractImages

Returns GUI Indicator for node

Overrides:

getSGUIIndicatorForNode in class AbstractImages

getDefaultImageType

public String getDefaultImageType()

Description copied from class: AbstractImages

The default image type is used when magic could not determin the type

Overrides:

getDefaultImageType in class AbstractImages

commit

public boolean commit(MMObjectNode node)

Description copied from class: MMObjectBuilder

Commit changes to this node to the storage layer. This method indirectly calls MMObjectBuilder.preCommit(org.mmbase.module.core.MMObjectNode). Use only to commit changes - for adding node, use MMObjectBuilder.insert(int, java.lang.String).

Overrides:

commit in class AbstractServletBuilder

Parameters:

node - The node to be committed

Returns:

true if commit successful

removeNode

public void removeNode(MMObjectNode node)

Override the MMObjectBuilder removeNode, to invalidate the Image Cache AFTER a deletion of the image node. Remove a node from the cloud.

Overrides:

removeNode in class MMObjectBuilder

Parameters:

node - The node to remove.

notify

public void notify(NodeEvent event)

Specified by:

notify in interface NodeEventListener

Overrides:

notify in class MMObjectBuilder

See Also:

here we handle all the backward compatibility stuff. this method covers for both node and relation events.

invalidateTemplateCacheNumberCache

void invalidateTemplateCacheNumberCache(int number)

Javadoc:

invalidateTemplateCacheNumberCache

void invalidateTemplateCacheNumberCache(String ckey)

Since:

MMBase-1.7