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Java Source Code / Java Documentation » Database ORM » db ojb » org.apache.ojb.odmg.collections

Source Cross Reference Class Diagram Java Document (Java Doc)

java.util .AbstractList

org.apache.ojb.odmg.collections .DListImpl

All known Subclasses:   org.apache.ojb.odmg.collections .DBagImpl,
DListImpl
public class DListImpl extends AbstractList implements DList,DArray,ManageableCollection,PersistenceBrokerAware(Code)

author:
   Thomas Mahler
author:
   Armin Waibel
version:
   $Id: DListImpl.java,v 1.27.2.5 2005/12/21 22:29:50 tomdz Exp $

Constructor Summary
public DListImpl()

public DListImpl(PBKey pbKey)


Method Summary
public void add(int index, Object element)
     Inserts the specified element at the specified position in this list (optional operation).
public void afterDelete(PersistenceBroker broker)

public void afterInsert(PersistenceBroker broker)

public void afterLookup(PersistenceBroker broker)

public void afterStore(PersistenceBroker broker)

public void afterUpdate(PersistenceBroker broker)

public void beforeDelete(PersistenceBroker broker)

public void beforeInsert(PersistenceBroker broker)
     prepare itself for persistence.
public void beforeUpdate(PersistenceBroker broker)

protected boolean checkForOpenTransaction(TransactionImpl tx)

public DList concat(DList otherList)
     Creates a new DList object that contains the contents of this DList object concatenated with the contents of the otherList object.
public boolean existsElement(String predicate)
     Determines whether there is an element of the collection that evaluates to true for the predicate.
public Object get(int index)
     Returns the element at the specified position in this list.
Parameters:
  index - index of element to return.
public List getElements()
     Insert the method's description here.
public Integer getId()
     Lazily return the Id, no point in precomputing it.
protected Logger getLog()

public PBKey getPBKey()

protected TransactionImpl getTransaction()

public int hashCode()

public Iterator iterator()
     Returns an iterator over the elements in this collection.
public ListIterator listIterator()
     Returns a list iterator of the elements in this list (in proper sequence).
public ListIterator listIterator(int index)
     Returns a list iterator of the elements in this list (in proper sequence), starting at the specified position in this list.
public void ojbAdd(Object anObject)
     add a single Object to the Collection.
public void ojbAddAll(ManageableCollection otherCollection)
     adds a Collection to this collection.
public Iterator ojbIterator()
     returns an Iterator over all elements in the collection.
public DCollection query(String predicate)
     Evaluate the boolean query predicate for each element of the collection and return a new collection that contains each element that evaluated to true.
public Object remove(int index)
     Removes the element at the specified position in this list (optional operation).
public void resize(int newSize)
     Resize the array to have newSize elements.
public Iterator select(String predicate)
     Access all of the elements of the collection that evaluate to true for the provided query predicate.
public Object selectElement(String predicate)
     Selects the single element of the collection for which the provided OQL query predicate is true.
Parameters:
  predicate - An OQL boolean query predicate.
public void setElements(List elements)
     Sets the elements.
public void setId(Integer id)
     Sets the id.
public void setPBKey(PBKey pbKey)

public int size()
     Returns the number of elements in this collection.
public String toString()


Constructor Detail
DListImpl
public DListImpl()(Code)
Used by PB-Kernel to instantiate ManageableCollections FOR INTERNAL USE ONLY

DListImpl
public DListImpl(PBKey pbKey)(Code)
Used on odmg-level

Method Detail
add
public void add(int index, Object element)(Code)
Inserts the specified element at the specified position in this list (optional operation). Shifts the element currently at that position (if any) and any subsequent elements to the right (adds one to their indices).
Parameters:
  index - index at which the specified element is to be inserted.
Parameters:
  element - element to be inserted.
throws:
  UnsupportedOperationException - if the add method is notsupported by this list.
throws:
  ClassCastException - if the class of the specified elementprevents it from being added to this list.
throws:
  IllegalArgumentException - if some aspect of the specifiedelement prevents it from being added to this list.
throws:
  IndexOutOfBoundsException - if the index is out of range(index < 0 || index > size()).

afterDelete
public void afterDelete(PersistenceBroker broker) throws PersistenceBrokerException(Code)
noop

afterInsert
public void afterInsert(PersistenceBroker broker) throws PersistenceBrokerException(Code)
noop

afterLookup
public void afterLookup(PersistenceBroker broker) throws PersistenceBrokerException(Code)
noop

afterStore
public void afterStore(PersistenceBroker broker) throws PersistenceBrokerException(Code)

afterUpdate
public void afterUpdate(PersistenceBroker broker) throws PersistenceBrokerException(Code)
noop

beforeDelete
public void beforeDelete(PersistenceBroker broker) throws PersistenceBrokerException(Code)
noop

beforeInsert
public void beforeInsert(PersistenceBroker broker) throws PersistenceBrokerException(Code)
prepare itself for persistence. Each DList entry generates an org.apache.ojb.broker.Identity for the wrapped persistent object.

beforeUpdate
public void beforeUpdate(PersistenceBroker broker) throws PersistenceBrokerException(Code)
noop

checkForOpenTransaction
protected boolean checkForOpenTransaction(TransactionImpl tx)(Code)

concat
public DList concat(DList otherList)(Code)
Creates a new DList object that contains the contents of this DList object concatenated with the contents of the otherList object.
Parameters:
  otherList - The list whose elements are placed at the end of the listreturned by this method. A new DList that is the concatenation of this list andthe list referenced by otherList.

existsElement
public boolean existsElement(String predicate) throws org.odmg.QueryInvalidException(Code)
Determines whether there is an element of the collection that evaluates to true for the predicate.
Parameters:
  predicate - An OQL boolean query predicate. True if there is an element of the collection that evaluates to truefor the predicate, otherwise false.
exception:
  org.odmg.QueryInvalidException - The query predicate is invalid.

get
public Object get(int index)(Code)
Returns the element at the specified position in this list.
Parameters:
  index - index of element to return. the element at the specified position in this list.
throws:
  IndexOutOfBoundsException - if the index is out of range (index< 0 || index >= size()).

getElements
public List getElements()(Code)
Insert the method's description here. Creation date: (10.02.2001 20:53:01) java.util.Vector

getId
public Integer getId()(Code)
Lazily return the Id, no point in precomputing it. int

getLog
protected Logger getLog()(Code)

getPBKey
public PBKey getPBKey()(Code)

getTransaction
protected TransactionImpl getTransaction()(Code)

hashCode
public int hashCode()(Code)

iterator
public Iterator iterator()(Code)
Returns an iterator over the elements in this collection. There are no guarantees concerning the order in which the elements are returned (unless this collection is an instance of some class that provides a guarantee). an Iterator over the elements in this collection

listIterator
public ListIterator listIterator()(Code)
Returns a list iterator of the elements in this list (in proper sequence). a list iterator of the elements in this list (in propersequence).

listIterator
public ListIterator listIterator(int index)(Code)
Returns a list iterator of the elements in this list (in proper sequence), starting at the specified position in this list. The specified index indicates the first element that would be returned by an initial call to the next method. An initial call to the previous method would return the element with the specified index minus one.
Parameters:
  index - index of first element to be returned from thelist iterator (by a call to the next method). a list iterator of the elements in this list (in propersequence), starting at the specified position in this list.
throws:
  IndexOutOfBoundsException - if the index is out of range (index< 0 || index > size()).

ojbAdd
public void ojbAdd(Object anObject)(Code)
add a single Object to the Collection. This method is used during reading Collection elements from the database. Thus it is is save to cast anObject to the underlying element type of the collection.

ojbAddAll
public void ojbAddAll(ManageableCollection otherCollection)(Code)
adds a Collection to this collection. Used in reading Extents from the Database. Thus it is save to cast otherCollection to this.getClass().

ojbIterator
public Iterator ojbIterator()(Code)
returns an Iterator over all elements in the collection. Used during store and delete Operations. If the implementor does not return an iterator over ALL elements, OJB cannot store and delete all elements properly.

query
public DCollection query(String predicate) throws QueryInvalidException(Code)
Evaluate the boolean query predicate for each element of the collection and return a new collection that contains each element that evaluated to true.
Parameters:
  predicate - An OQL boolean query predicate. A new collection containing the elements that evaluated true for the predicate.
exception:
  org.odmg.QueryInvalidException - The query predicate is invalid.

remove
public Object remove(int index)(Code)
Removes the element at the specified position in this list (optional operation). Shifts any subsequent elements to the left (subtracts one from their indices). Returns the element that was removed from the list.
This implementation always throws an UnsupportedOperationException.
Parameters:
  index - the index of the element to remove. the element previously at the specified position.
throws:
  UnsupportedOperationException - if the remove method isnot supported by this list.
throws:
  IndexOutOfBoundsException - if the specified index is out ofrange (index < 0 || index >= size()).

resize
public void resize(int newSize)(Code)
Resize the array to have newSize elements.
Parameters:
  newSize - The new size of the array.

select
public Iterator select(String predicate) throws org.odmg.QueryInvalidException(Code)
Access all of the elements of the collection that evaluate to true for the provided query predicate.
Parameters:
  predicate - An OQL boolean query predicate. An iterator used to iterate over the elements that evaluated true for the predicate.
exception:
  org.odmg.QueryInvalidException - The query predicate is invalid.

selectElement
public Object selectElement(String predicate) throws org.odmg.QueryInvalidException(Code)
Selects the single element of the collection for which the provided OQL query predicate is true.
Parameters:
  predicate - An OQL boolean query predicate. The element that evaluates to true for the predicate. If no elementevaluates to true, null is returned.
exception:
  org.odmg.QueryInvalidException - The query predicate is invalid.

setElements
public void setElements(List elements)(Code)
Sets the elements.
Parameters:
  elements - The elements to set

setId
public void setId(Integer id)(Code)
Sets the id.
Parameters:
  id - The id to set

setPBKey
public void setPBKey(PBKey pbKey)(Code)

size
public int size()(Code)
Returns the number of elements in this collection. If this collection contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE. the number of elements in this collection

toString
public String toString()(Code)

Fields inherited from java.util.AbstractList
protected transient int modCount(Code)(Java Doc)

Methods inherited from java.util.AbstractList
public boolean add(E e)(Code)(Java Doc)
public void add(int index, E element)(Code)(Java Doc)
public boolean addAll(int index, Collection<? extends E> c)(Code)(Java Doc)
public void clear()(Code)(Java Doc)
public boolean equals(Object o)(Code)(Java Doc)
abstract public E get(int index)(Code)(Java Doc)
public int hashCode()(Code)(Java Doc)
public int indexOf(Object o)(Code)(Java Doc)
public Iterator<E> iterator()(Code)(Java Doc)
public int lastIndexOf(Object o)(Code)(Java Doc)
public ListIterator<E> listIterator()(Code)(Java Doc)
public ListIterator<E> listIterator(int index)(Code)(Java Doc)
public E remove(int index)(Code)(Java Doc)
protected void removeRange(int fromIndex, int toIndex)(Code)(Java Doc)
public E set(int index, E element)(Code)(Java Doc)
public List<E> subList(int fromIndex, int toIndex)(Code)(Java Doc)

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