Java Doc for GroupList.java in  » Report » pentaho-report » org » jfree » report » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Report » pentaho report » org.jfree.report 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.jfree.report.GroupList

All known Subclasses:   org.jfree.report.states.UnmodifiableGroupList,
GroupList
public class GroupList implements Cloneable,Serializable(Code)
The group list is used to store groups in a ordered way. The less specific groups are guaranteed to be listed before the more specific subgroups.

Groups are ordered by comparing the declared fieldnames for the groups. A subgroup of an group must contain all fields from its parent plus at least one new field.

This implementation is not synchronized.

The group list cannot be empty. JFreeReport needs at least one group instance to work as expected. By default, this default instance does not define any fields (and therefore contains the complete report) and has no Bands defined (rendering it invisible). You cannot remove that group. Every attempt to remove the last group will recreates a new default group.
author:
   Thomas Morgner



Field Summary
final public static  StringDEFAULT_GROUP_NAME
     The name of the automaticly created default group.

Constructor Summary
public  GroupList()
     Constructs a new group list, with only a default group inside.
protected  GroupList(GroupList list)
     Creates a new group list and copies the contents of the given grouplist.

Method Summary
public  voidadd(Group o)
     Adds a group to the list.
public  voidaddAll(Collection c)
     Adds all groups of the collection to this group list.
public  voidclear()
     Clears the list.
public  Objectclone()
     Clones the group list and all contained groups.
public  Groupget(int i)
     Returns the group at a given position in the list.
Parameters:
  i - the position index (zero-based).
public  GroupgetGroupByName(String name)
     Searches a group by its defined name.
protected  Group[]getGroupCache()
     Returns a direct reference to the group cache.
public  ReportDefinitiongetReportDefinition()
     Returns the assigned report definition of the group.
public  Iteratoriterator()
     Returns an iterator for the groups of the list.
public  booleanremove(Group o)
     Removes an group from the list.
Parameters:
  o - the group that should be removed.
public  voidsetReportDefinition(ReportDefinition reportDefinition)
     Assigns the report definition to all groups in the list.
public  intsize()
     Returns the number of groups in the list.
public  StringtoString()
     Returns a string representation of the list (useful for debugging).

Field Detail
DEFAULT_GROUP_NAME
final public static String DEFAULT_GROUP_NAME(Code)
The name of the automaticly created default group.




Constructor Detail
GroupList
public GroupList()(Code)
Constructs a new group list, with only a default group inside.



GroupList
protected GroupList(GroupList list)(Code)
Creates a new group list and copies the contents of the given grouplist. If the given group list was assigned with a report definition, then the new group list will share that registration.
Parameters:
  list - groups to add to the list.




Method Detail
add
public void add(Group o)(Code)
Adds a group to the list.
Parameters:
  o - the group object.



addAll
public void addAll(Collection c)(Code)
Adds all groups of the collection to this group list. This method will result in a ClassCastException if the collection does not contain Group objects.
Parameters:
  c - the collection that contains the groups.
throws:
  NullPointerException - if the given collection is null.
throws:
  ClassCastException - if the collection does not contain groups.



clear
public void clear()(Code)
Clears the list.



clone
public Object clone() throws CloneNotSupportedException(Code)
Clones the group list and all contained groups. a clone of this list.
throws:
  CloneNotSupportedException - if cloning the element failed.
See Also:   Cloneable



get
public Group get(int i)(Code)
Returns the group at a given position in the list.
Parameters:
  i - the position index (zero-based). the report group.



getGroupByName
public Group getGroupByName(String name)(Code)
Searches a group by its defined name. This method returns null, if the group was not found.
Parameters:
  name - the name of the group. the group or null if not found.



getGroupCache
protected Group[] getGroupCache()(Code)
Returns a direct reference to the group cache. the groups of this list as array.



getReportDefinition
public ReportDefinition getReportDefinition()(Code)
Returns the assigned report definition of the group. the report definition (maybe null).



iterator
public Iterator iterator()(Code)
Returns an iterator for the groups of the list. An iterator over all groups of the list.



remove
public boolean remove(Group o)(Code)
Removes an group from the list.
Parameters:
  o - the group that should be removed. a boolean indicating whether or not the object was removed.
throws:
  NullPointerException - if the given group object is null.



setReportDefinition
public void setReportDefinition(ReportDefinition reportDefinition)(Code)
Assigns the report definition to all groups in the list.
Parameters:
  reportDefinition - the report definition (maybe null).



size
public int size()(Code)
Returns the number of groups in the list. The number of groups in the list.



toString
public String toString()(Code)
Returns a string representation of the list (useful for debugging). A string.



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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