org.mmbase.module.builders
Class AbstractImages

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

All Implemented Interfaces:

EventListener, NodeEventListener, RelationEventListener

Direct Known Subclasses:

ImageCaches, Images

public abstract class AbstractImages

extends AbstractServletBuilder

AbstractImages holds the images and provides ways to insert, retrieve and search them.

Since:

MMBase-1.6

Version:

$Id: AbstractImages.java,v 1.47 2006/06/28 11:05:25 michiel Exp $

Author:

Michiel Meeuwissen

Nested Class Summary

protected static class

AbstractImages.CKeyCache Cache with 'ckey' keys.

Field Summary

static Parameter[]	DIMENSION_PARAMETERS
static String	FIELD_FILESIZE
static String	FIELD_HEIGHT
static String	FIELD_ITYPE
static String	FIELD_WIDTH
protected static BlobCache	handleCache
static Parameter[]	HEIGHT_PARAMETERS
protected Set	IMAGE_HANDLE_FIELDS
static Parameter[]	WIDTH_PARAMETERS

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

addsFileName, FIELD_FILENAME, FIELD_HANDLE, FIELD_MIMETYPE, FORMAT_PARAMETERS, GUI_PARAMETERS, legalizeFileName, MIMETYPE_PARAMETERS, 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, guiFunction, infoFunction, internalVersion, nodeCache, oType, searchAge, SYSTEM_OWNER, TEMPNODE_DEFAULT_SIZE, temporaryNodes, 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

AbstractImages()

Method Summary

protected void	checkHandle(MMObjectNode node) Tries to fill all fields which are dependend on the 'handle' field.
protected Object	executeFunction(MMObjectNode node, String function, List args) Every image of course has a format and a mimetype.
protected String	getAssociation() This functions should return a string identifying where it is for.
protected BlobCache	getBlobCache(String fieldName) Returns
protected String	getDefaultImageType() The default image type is used when magic could not determin the type
protected String	getDefaultPath() If no servlet path can be found via the association (if the servlet did not 'associate' itself with something, like servdb), then the getServletPath function will fall back to this.
protected Dimension	getDimension(MMObjectNode node) Gets the dimension of given node.
protected Dimension	getDimensionForEmptyHandle(MMObjectNode node)
protected int	getFileSize(MMObjectNode node)
protected abstract String	getGUIIndicatorWithAlt(MMObjectNode node, String title, Parameters a) An image's gui-indicator is of course some <img src>, but it depends on what kind of image (cached, original) what excactly it must be.
protected Set	getHandleFields() Returns the fields which tell something about the 'handle' field, and can be calculated from it.
protected String	getImageFormat(MMObjectNode node) Determines the image type of an object and stores the content in the itype field.
String	getMimeType(MMObjectNode node) Determine the MIME type of this image node, based on the image format.
protected String	getSGUIIndicator(MMObjectNode node, Parameters a) 'Servlet' builders need a way to transform security to the servlet, in the gui functions, so they have to implement the 'SGUIIndicators'
protected String	getSGUIIndicatorForNode(MMObjectNode node, Parameters a) Returns GUI Indicator for node
protected boolean	storesDimension() Whether this builders has width and height fields
protected boolean	storesFileSize() Whether this builders has a filesize field.
protected boolean	storesImageType() Whether this builders has a filesize field.

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

addFileName, commit, 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, getDBKey, getDBState, getDBType, getDefaultTeaser, getDefaultUrl, getDescendants, getDescription, getDescription, getDescriptions, getEditFields, getEmptyNode, getField, getFieldNames, getFields, getFields, getFunction, getFunctionParameters, getFunctions, getGUIIndicator, getHardNode, getHardNode, getHTML, getInitParameter, 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, getShortedText, getSingularName, getSingularName, getSingularNames, getSmartPath, getSortedFields, getSortedListFields, getTmpNode, getURLEncode, getValue, getVersion, getWAP, getXMLPath, hasField, hashCode, hashCode, hostname_function, init, insert, isExtensionOf, isNodeCached, isVirtual, newFunctionInstance, nodeLocalChanged, nodeRemoteChanged, notify, notify, preCommit, process, putTmpNode, removeEventListener, removeField, removeLocalObserver, removeNode, removeRelations, removeRemoteObserver, removeSyncNodes, removeTmpNode, replace, safeCache, sendFieldChangeSignal, setDefaults, setDescription, setDescriptions, setFields, setInitParameter, setMaintainer, setParentBuilder, 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

Field Detail

HEIGHT_PARAMETERS

public static final Parameter[] HEIGHT_PARAMETERS

WIDTH_PARAMETERS

public static final Parameter[] WIDTH_PARAMETERS

DIMENSION_PARAMETERS

public static final Parameter[] DIMENSION_PARAMETERS

FIELD_ITYPE

public static final String FIELD_ITYPE

See Also:

Constant Field Values

FIELD_FILESIZE

public static final String FIELD_FILESIZE

See Also:

Constant Field Values

FIELD_HEIGHT

public static final String FIELD_HEIGHT

See Also:

Constant Field Values

FIELD_WIDTH

public static final String FIELD_WIDTH

See Also:

Constant Field Values

handleCache

protected static BlobCache handleCache

IMAGE_HANDLE_FIELDS

protected final Set IMAGE_HANDLE_FIELDS

Constructor Detail

AbstractImages

public AbstractImages()

Method Detail

getBlobCache

protected BlobCache getBlobCache(String fieldName)

Description copied from class: MMObjectBuilder

Returns

Overrides:

getBlobCache in class MMObjectBuilder

getAssociation

protected String getAssociation()

Description copied from class: AbstractServletBuilder

This functions should return a string identifying where it is for. This is used when communicating with MMBaseServlet, to find the right servlet. For example 'images' or 'attachments'.

Specified by:

getAssociation in class AbstractServletBuilder

getDefaultPath

protected String getDefaultPath()

Description copied from class: AbstractServletBuilder

If no servlet path can be found via the association (if the servlet did not 'associate' itself with something, like servdb), then the getServletPath function will fall back to this. For example 'img.db' or 'attachment.db'.

Specified by:

getDefaultPath in class AbstractServletBuilder

getGUIIndicatorWithAlt

protected abstract String getGUIIndicatorWithAlt(MMObjectNode node,
                                                 String title,
                                                 Parameters a)

An image's gui-indicator is of course some <img src>, but it depends on what kind of image (cached, original) what excactly it must be.

getSGUIIndicatorForNode

protected String getSGUIIndicatorForNode(MMObjectNode node,
                                         Parameters a)

Returns GUI Indicator for node

Since:

MMBase-1.7

getSGUIIndicator

protected String getSGUIIndicator(MMObjectNode node,
                                  Parameters a)

Description copied from class: AbstractServletBuilder

'Servlet' builders need a way to transform security to the servlet, in the gui functions, so they have to implement the 'SGUIIndicators'

Specified by:

getSGUIIndicator in class AbstractServletBuilder

Since:

MMBase-1.7

getHandleFields

protected Set getHandleFields()

Description copied from class: AbstractServletBuilder

Returns the fields which tell something about the 'handle' field, and can be calculated from it.

Specified by:

getHandleFields in class AbstractServletBuilder

getMimeType

public String getMimeType(MMObjectNode node)

Determine the MIME type of this image node, based on the image format.

Overrides:

getMimeType in class AbstractServletBuilder

storesDimension

protected boolean storesDimension()

Whether this builders has width and height fields

storesFileSize

protected boolean storesFileSize()

Whether this builders has a filesize field.

storesImageType

protected boolean storesImageType()

Whether this builders has a filesize field.

getDimensionForEmptyHandle

protected Dimension getDimensionForEmptyHandle(MMObjectNode node)

Since:

MMBase-1.8.1

getDimension

protected Dimension getDimension(MMObjectNode node)

Gets the dimension of given node. Also when the fields are missing, it will result a warning then.

getFileSize

protected int getFileSize(MMObjectNode node)

getDefaultImageType

protected String getDefaultImageType()

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

getImageFormat

protected String getImageFormat(MMObjectNode node)

Determines the image type of an object and stores the content in the itype field.

Parameters:

node - The object to use.

checkHandle

protected void checkHandle(MMObjectNode node)

Description copied from class: AbstractServletBuilder

Tries to fill all fields which are dependend on the 'handle' field. They will be filled automaticly if not still null.

Overrides:

checkHandle in class AbstractServletBuilder

executeFunction

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

Every image of course has a format and a mimetype. Two extra functions to get them.

Overrides:

executeFunction in class AbstractServletBuilder