com.sdm.quasar.client.core.data.plugins.impl
Class IndexedListValueHandler

java.lang.Object
  com.sdm.quasar.client.core.data.plugins.impl.AbstractIndexedValueHandler
      com.sdm.quasar.client.core.data.plugins.impl.IndexedListValueHandler

All Implemented Interfaces:

ValueHandler

public class IndexedListValueHandler

extends AbstractIndexedValueHandler

Default implementation for a value handler that takes responsibility for storing and accessing a value defined by IndexedNode that is based on a List.

Version:

1.0

Author:

Thomas Wolf, sd&m AG, Bernd Olleck, sd&m AG

Constructor Summary

IndexedListValueHandler()
Creates a new IndexedListValueHandler.

Method Summary

boolean	canHandle(Node node) Tests whether the value handler can handle nodes of the given type.
protected java.lang.Object	getIndexedValue(java.lang.Object sourceValue, java.lang.Object indexValue) Template method to retrieve to value of the given index from the given source value.
protected java.util.Set	getIndexSet(java.lang.Object sourceValue) Template method to retrieve the set of index values for the given source value.
protected void	setIndexedValue(java.lang.Object sourceValue, java.lang.Object indexValue, NodeController node, java.lang.Object value) Template method to set a value for the given index at the given source value.

Methods inherited from class com.sdm.quasar.client.core.data.plugins.impl.AbstractIndexedValueHandler

canModifyValue, getIndexSet, getValue, hasValue, notifyChildValueChanged, notifyNodeValueChanged, notifySourceValueChanged, setValue

Methods inherited from class java.lang.Object

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

Constructor Detail

IndexedListValueHandler

public IndexedListValueHandler()

Creates a new IndexedListValueHandler.

Method Detail

canHandle

public boolean canHandle(Node node)

Description copied from interface: ValueHandler

Tests whether the value handler can handle nodes of the given type.

Parameters:

node - the node definition

Returns:

true iff the value handler can handle that node

See Also:

com.sdm.quasar.client.core.data.internal.impl.ValueHandler#canHandle(com.sdm.quasar.client.core.data.structure.Node)

getIndexedValue

protected java.lang.Object getIndexedValue(java.lang.Object sourceValue,
                                           java.lang.Object indexValue)

Description copied from class: AbstractIndexedValueHandler

Template method to retrieve to value of the given index from the given source value. E.g. for a list the source value is the list and the index value is the Integer of index of the requested value. For am map the value is the map and the index value is the key of the requested value.

Specified by:

getIndexedValue in class AbstractIndexedValueHandler

Parameters:

sourceValue - the source value of the node

indexValue - the index of the requested value

Returns:

value of the given index from the given source value

See Also:

com.sdm.quasar.client.core.data.plugin.impl.AbstractIndexedValueHandler#getIndexedValue(java.lang.Object, java.lang.Object)

setIndexedValue

protected void setIndexedValue(java.lang.Object sourceValue,
                               java.lang.Object indexValue,
                               NodeController node,
                               java.lang.Object value)

Description copied from class: AbstractIndexedValueHandler

Template method to set a value for the given index at the given source value. E.g. for a list the source value is the list and the index value is the Integer of index of the requested value. For am map the value is the map and the index value is the key of the requested value.

Specified by:

setIndexedValue in class AbstractIndexedValueHandler

Parameters:

sourceValue - the source value of the node

indexValue - the index of the requested value

node - the node controlle of the node

value - of the given index from the given source value

See Also:

com.sdm.quasar.client.core.data.plugin.impl.AbstractIndexedValueHandler#setIndexedValue(java.lang.Object, java.lang.Object, com.sdm.quasar.client.core.data.internal.impl.NodeController, java.lang.Object)

getIndexSet

protected java.util.Set getIndexSet(java.lang.Object sourceValue)

Description copied from class: AbstractIndexedValueHandler

Template method to retrieve the set of index values for the given source value.

Specified by:

getIndexSet in class AbstractIndexedValueHandler

Parameters:

sourceValue - the source value of the node

Returns:

set of index values for the given source value or null

See Also:

com.sdm.quasar.client.core.data.plugin.impl.AbstractIndexedValueHandler#getIndexSet(java.lang.Object)