org.opencms.file.collectors
Class A_CmsResourceCollector

java.lang.Object
  org.opencms.file.collectors.A_CmsResourceCollector

All Implemented Interfaces:

Comparable, I_CmsResourceCollector

Direct Known Subclasses:

CmsDefaultResourceCollector, CmsPriorityResourceCollector

public abstract class A_CmsResourceCollector
extends Object
implements I_CmsResourceCollector

Provides some helpful base implementations for resource collector classes.

Since:

6.0.0

Version:

$Revision: 1.8 $

Author:

Alexander Kandzior

Field Summary

protected int

m_order The collector order of this collector.

Constructor Summary

A_CmsResourceCollector()
Constructor to initialize some default values.

Method Summary

protected void	checkParams() Checks if the required parameters have been set.
int	compareTo(Object obj)
boolean	equals(Object obj) Two collectors are considered to be equal if they are sharing the same implementation class.
protected String	getCreateInFolder(CmsObject cms, String param) Returns the link to create a new XML content item in the folder pointed to by the parameter.
String	getCreateLink(CmsObject cms) Returns the link that must be executed when a user clicks on the direct edit "new" button on a list created by the default collector.
String	getCreateParam(CmsObject cms) Returns the default parameter that must be passed to the I_CmsResourceCollector.getCreateLink(CmsObject, String, String) method.
String	getDefaultCollectorName() Returns the default collector name to use for collecting resources.
String	getDefaultCollectorParam() Returns the default collector parameter to use for collecting resources.
int	getOrder() Returns the "order weight" of this collector.
List	getResults(CmsObject cms) Returns a list of CmsResource Objects that are gathered in the VFS using the default collector name and parameter.
int	hashCode()
void	setDefaultCollectorName(String collectorName) Sets the default collector name to use for collecting resources.
void	setDefaultCollectorParam(String param) Sets the default collector parameter to use for collecting resources.
void	setOrder(int order) Sets the "order weight" of this collector.
protected List	shrinkToFit(List result, int maxSize) Shrinks a List to fit a maximum size.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.opencms.file.collectors.I_CmsResourceCollector

getCollectorNames, getCreateLink, getCreateParam, getResults

Field Detail

m_order

protected int m_order

The collector order of this collector.

Constructor Detail

A_CmsResourceCollector

public A_CmsResourceCollector()

Constructor to initialize some default values.

Method Detail

compareTo

public int compareTo(Object obj)

Specified by:

compareTo in interface Comparable

See Also:

Comparable.compareTo(java.lang.Object)

equals

public boolean equals(Object obj)

Two collectors are considered to be equal if they are sharing the same implementation class.

Overrides:

equals in class Object

See Also:

Object.equals(java.lang.Object)

getCreateLink

public String getCreateLink(CmsObject cms)
                     throws CmsException,
                            CmsDataAccessException

Description copied from interface: I_CmsResourceCollector

Returns the link that must be executed when a user clicks on the direct edit "new" button on a list created by the default collector.

If this method returns null, it indicated that the selected collector implementation does not support a "create link", and so no "new" button will should shown on lists generated with this collector.

Specified by:

getCreateLink in interface I_CmsResourceCollector

Parameters:

cms - the current CmsObject

Returns:

the link to execute after a "new" button was clicked

Throws:

CmsException - if something goes wrong

CmsDataAccessException - if the param attrib of the corresponding collector tag is invalid

See Also:

I_CmsResourceCollector.getCreateLink(org.opencms.file.CmsObject)

getCreateParam

public String getCreateParam(CmsObject cms)
                      throws CmsDataAccessException

Description copied from interface: I_CmsResourceCollector

Returns the default parameter that must be passed to the I_CmsResourceCollector.getCreateLink(CmsObject, String, String) method.

If this method returns null, it indicates that the selected collector implementation does not support a "create link", and so no "new" button will should shown on lists generated with this collector.

Specified by:

getCreateParam in interface I_CmsResourceCollector

Parameters:

cms - the current CmsObject

Returns:

the parameter that will be passed to the I_CmsResourceCollector.getCreateLink(CmsObject, String, String) method, or null

Throws:

CmsDataAccessException - if the param attrib of the corresponding collector tag is invalid

See Also:

I_CmsResourceCollector.getCreateParam(org.opencms.file.CmsObject)

getDefaultCollectorName

public String getDefaultCollectorName()

Description copied from interface: I_CmsResourceCollector

Returns the default collector name to use for collecting resources.

Specified by:

getDefaultCollectorName in interface I_CmsResourceCollector

Returns:

the default collector name

See Also:

I_CmsResourceCollector.getDefaultCollectorName()

getDefaultCollectorParam

public String getDefaultCollectorParam()

Description copied from interface: I_CmsResourceCollector

Returns the default collector parameter to use for collecting resources.

Specified by:

getDefaultCollectorParam in interface I_CmsResourceCollector

Returns:

the default collector parameter

See Also:

I_CmsResourceCollector.getDefaultCollectorParam()

getOrder

public int getOrder()

Description copied from interface: I_CmsResourceCollector

Returns the "order weight" of this collector.

The "order weight" is important because two collector classes may provide a collector with the same name. If this is the case, the collector implementation with the higher order number "overrules" the lower order number classs.

Specified by:

getOrder in interface I_CmsResourceCollector

Returns:

the "order weight" of this collector

See Also:

I_CmsResourceCollector.getOrder()

getResults

public List getResults(CmsObject cms)
                throws CmsDataAccessException,
                       CmsException

Description copied from interface: I_CmsResourceCollector

Returns a list of CmsResource Objects that are gathered in the VFS using the default collector name and parameter.

Specified by:

getResults in interface I_CmsResourceCollector

Parameters:

cms - the current CmsObject

Returns:

a list of CmsXmlContent objects

Throws:

CmsDataAccessException - if the param attrib of the corresponding collector tag is invalid

CmsException - if something goes wrong

See Also:

I_CmsResourceCollector.getResults(org.opencms.file.CmsObject)

hashCode

public int hashCode()

Overrides:

hashCode in class Object

See Also:

Object.hashCode()

setDefaultCollectorName

public void setDefaultCollectorName(String collectorName)

Description copied from interface: I_CmsResourceCollector

Sets the default collector name to use for collecting resources.

Specified by:

setDefaultCollectorName in interface I_CmsResourceCollector

Parameters:

collectorName - the default collector name

See Also:

I_CmsResourceCollector.setDefaultCollectorName(java.lang.String)

setDefaultCollectorParam

public void setDefaultCollectorParam(String param)

Description copied from interface: I_CmsResourceCollector

Sets the default collector parameter to use for collecting resources.

Specified by:

setDefaultCollectorParam in interface I_CmsResourceCollector

Parameters:

param - the default collector parameter

See Also:

I_CmsResourceCollector.setDefaultCollectorParam(java.lang.String)

setOrder

public void setOrder(int order)

Description copied from interface: I_CmsResourceCollector

Sets the "order weight" of this collector.

Specified by:

setOrder in interface I_CmsResourceCollector

Parameters:

order - the order weight to set

See Also:

I_CmsResourceCollector.setOrder(int)

checkParams

protected void checkParams()

Checks if the required parameters have been set.

See Also:

setDefaultCollectorName(String), setDefaultCollectorParam(String)

getCreateInFolder

protected String getCreateInFolder(CmsObject cms,
                                   String param)
                            throws CmsException

Returns the link to create a new XML content item in the folder pointed to by the parameter.

Parameters:

cms - the current CmsObject

param - the folder name to use

Returns:

the link to create a new XML content item in the folder

Throws:

CmsException - if something goes wrong

shrinkToFit

protected List shrinkToFit(List result,
                           int maxSize)

Shrinks a List to fit a maximum size.

Parameters:

result - a List

maxSize - the maximum size of the List

Returns:

the shrinked list