scone.netobjects
Class Link

java.lang.Object
  scone.netobjects.TableRecord
      scone.netobjects.Link

All Implemented Interfaces:

Cacheable

public class Link
extends TableRecord

a Link represents a links-set from the database

Author:

Harald Weinreich, Volkert Buchmann

Field Summary

static java.lang.String	COPYRIGHT
protected static DBTableAdapter	dbTable
static int	DOWN
static int	EXTERNAL
static int	FRAGMENT
static int	FROMCLUSTERINDEX
static int	FROMHOME
protected NetNode	fromNode
static int	INTERNAL
static int	NOHTML
static int	NOHTTP
static int	QUERY
static int	SAMECLUSTER
static int	SAMEDOCUMENT
static int	TOCLUSTERINDEX
static int	TOHOME
protected NetNode	toNode
static int	UP

Fields inherited from class scone.netobjects.TableRecord

ctei, date, fieldValues, hasChanged, hasRecordInDB, persistent

Constructor Summary

Link()

Link(NetNode from, NetNode to, java.lang.String fragment)

Link(java.sql.ResultSet results)

Link(java.lang.String linkId)

Method Summary

void	computeType() Compute link type.
void	fill(adc.parser.HtmlTag tag) sets the attributes to the values from a tag
java.lang.String	getAlt() returns the ALT parameter of a pictures inside that link
java.lang.String	getFragment() returns the fragment: protocol://server/path#fragment
NetNode	getFromNode() returns the node in which the link is defined
java.lang.Object	getKey(int KeyNo) returns the hashkey for this object (to be deprecated!)
java.lang.String	getLinkId() returns the id of this link
java.lang.String	getLinkText() returns the text between the opening and the closing a-tag
java.lang.String	getRel() returns the rel parameter
java.lang.String	getRev() returns the rev parameter
java.lang.String	getTarget() returns the target window/frame
java.lang.String	getTitle() returns the title parameter
NetNode	getToNode() returns the node to which the link is pointing
int	getType() returns the link type bitfield parameter
void	setAlt(java.lang.String v) sets the ALT parameter of a pictue inside this link
void	setLinkText(java.lang.String v) sets the text between the opening and the closing a-tag
void	setRel(java.lang.String v) sets the rel parameter
void	setRev(java.lang.String v) sets the rev parameter
void	setTarget(java.lang.String v) sets the target window/frame
void	setTitle(java.lang.String v) sets the title parameter
void	setType(int t) sets the type parameter
void	store() Store Link to DB For performance reasons, links objects can be created without corresponding DB entry!

Methods inherited from class scone.netobjects.TableRecord

isPersistent, now, setCacheTableEntryInterface, setChanged, setPersistent

Methods inherited from class java.lang.Object

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

Field Detail

COPYRIGHT

public static final java.lang.String COPYRIGHT

See Also:

Constant Field Values

SAMEDOCUMENT

public static final int SAMEDOCUMENT

See Also:

Constant Field Values

FRAGMENT

public static final int FRAGMENT

See Also:

Constant Field Values

QUERY

public static final int QUERY

See Also:

Constant Field Values

EXTERNAL

public static final int EXTERNAL

See Also:

Constant Field Values

INTERNAL

public static final int INTERNAL

See Also:

Constant Field Values

FROMHOME

public static final int FROMHOME

See Also:

Constant Field Values

TOHOME

public static final int TOHOME

See Also:

Constant Field Values

DOWN

public static final int DOWN

See Also:

Constant Field Values

UP

public static final int UP

See Also:

Constant Field Values

SAMECLUSTER

public static final int SAMECLUSTER

See Also:

Constant Field Values

FROMCLUSTERINDEX

public static final int FROMCLUSTERINDEX

See Also:

Constant Field Values

TOCLUSTERINDEX

public static final int TOCLUSTERINDEX

See Also:

Constant Field Values

NOHTTP

public static final int NOHTTP

See Also:

Constant Field Values

NOHTML

public static final int NOHTML

See Also:

Constant Field Values

dbTable

protected static DBTableAdapter dbTable

fromNode

protected NetNode fromNode

toNode

protected NetNode toNode

Constructor Detail

Link

public Link()

Link

public Link(java.sql.ResultSet results)

Link

public Link(java.lang.String linkId)

Link

public Link(NetNode from,
            NetNode to,
            java.lang.String fragment)

Method Detail

getLinkId

public java.lang.String getLinkId()

returns the id of this link

Returns:

the id

getLinkText

public java.lang.String getLinkText()

returns the text between the opening and the closing a-tag

Returns:

the linktext

setLinkText

public void setLinkText(java.lang.String v)

sets the text between the opening and the closing a-tag

Parameters:

v - the linktext

getTarget

public java.lang.String getTarget()

returns the target window/frame

Returns:

the target

setTarget

public void setTarget(java.lang.String v)

sets the target window/frame

Parameters:

v - the target

getTitle

public java.lang.String getTitle()

returns the title parameter

Returns:

the title

setTitle

public void setTitle(java.lang.String v)

sets the title parameter

Parameters:

v - the title

getAlt

public java.lang.String getAlt()

returns the ALT parameter of a pictures inside that link

Returns:

the IMaGes ALT parameter

setAlt

public void setAlt(java.lang.String v)

sets the ALT parameter of a pictue inside this link

Parameters:

v - the IMaGes ALT parameter

getRev

public java.lang.String getRev()

returns the rev parameter

Returns:

the rev parameter

setRev

public void setRev(java.lang.String v)

sets the rev parameter

Parameters:

v - the rev parameter

getRel

public java.lang.String getRel()

returns the rel parameter

Returns:

the rel parameter

setRel

public void setRel(java.lang.String v)

sets the rel parameter

Parameters:

v - the rel parameter

getType

public int getType()

returns the link type bitfield parameter

Returns:

the typ parameter

setType

public void setType(int t)

sets the type parameter

Parameters:

t - the type parameter

getFromNode

public NetNode getFromNode()

returns the node in which the link is defined

Returns:

the defining node

getToNode

public NetNode getToNode()

returns the node to which the link is pointing

Returns:

the linked node

getFragment

public java.lang.String getFragment()

returns the fragment: protocol://server/path#fragment

Returns:

the fragment

fill

public void fill(adc.parser.HtmlTag tag)

sets the attributes to the values from a tag

Parameters:

tag - the tag

store

public void store()

Store Link to DB
For performance reasons, links objects can be created without corresponding DB entry! Therefore store can also create new DB entries.

getKey

public java.lang.Object getKey(int KeyNo)

Description copied from interface: Cacheable

returns the hashkey for this object (to be deprecated!)

Specified by:

getKey in interface Cacheable

Specified by:

getKey in class TableRecord

Parameters:

KeyNo - the number of the key to be generated

Returns:

the Key(s) corresponding to the object.

computeType

public void computeType()

Compute link type. Type information is stored in bits of an integer value. This data is provided to make access to this kind of topological information easier and faster.

bit 0: Roundtrip: Pointing to the same document.
bit 1: Fragment: Fragment defined
bit 2: Query: Query GET-parameters defined

bit 6: External Link: Pointing from one to an other site
bit 7: Sub-External: Pointign to an other site, but same top level domains.

bit 10: From Home: Coming from Homepage of server
bit 11: Home: Pointing to homepage of server

bit 14: Down: Pointing down the hierarchy of the URL - longer path name, same branch
bit 15: Up: Pointing up - shorter path name, same branch.
bit 16: Associative up -
bit 17: Assiciative down -

bit 20: Cluster: Link points to document in same path.
bit 21: From Cluster root: from collection root, page name is index.html, default.htm etc.
bit 22: To Cluster root: to collection root

bit 24: Other protocol: Link destination is not http but mail, ftp etc.
bit 25: Other Mime-Type: Destination of link is not HTML-document.