oracle.adf.model.generic
Class RowImpl

java.lang.Object
  oracle.adf.model.generic.RowImpl

All Implemented Interfaces:

AttributeList, Row, XMLInterface

public class RowImpl

extends java.lang.Object

implements Row

The RowImpl class is used to access the data inside a row using the Row interface

Version:

INTERNAL

See Also:

AttributeDef

Field Summary

Fields inherited from interface oracle.jbo.Row

REFRESH_CONTAINEES, REFRESH_FORGET_NEW_ROWS, REFRESH_REMOVE_NEW_ROWS, REFRESH_UNDO_CHANGES, REFRESH_WITH_DB_FORGET_CHANGES, REFRESH_WITH_DB_ONLY_IF_UNCHANGED, STATUS_INITIALIZED, STATUS_NEW

Fields inherited from interface oracle.jbo.XMLInterface

XML_IGNORE_DEPTH_COUNT, XML_OPT_ALL_ROWS, XML_OPT_ASSOC_CONSISTENT, XML_OPT_CHANGES_ONLY, XML_OPT_LIMIT_RANGE

Constructor Summary

protected

RowImpl(java.lang.Object rowDataProvider, DCRowSetIteratorImpl rowSetIterator)

Method Summary

boolean	equals(java.lang.Object obj)
ApplicationModule	getApplicationModule()
java.lang.Object	getAttribute(int index) Returns the data for the attribute at the given index.
java.lang.Object	getAttribute(java.lang.String name) Returns the data for the attribute with the given name.
int	getAttributeCount() Get the attribute count
int	getAttributeIndexOf(java.lang.String name) Get the index for an attribute given the name
java.lang.String[]	getAttributeNames() Returns an array of attribute names in this list.
java.lang.Object[]	getAttributeValues() Returns an array of attribute values in this list.
java.lang.Object	getDataProvider()
Key	getKey() Returns the key of the row.
StructureDef	getStructureDef() Returns the structure of the row.
boolean	isAttributeUpdateable(int index) Tests if an attribute is updateable.
void	lock() Acquire the row provider data to be modified in this transaction space.
void	readXML(Element elem, int depthCount)
void	readXML(Element elem, int depthCount, XSLStylesheet xslt)
void	refresh(int refreshMode) Refreshes the row's attributes with values from database.
void	remove() Delete the row.
void	removeAndRetain() Removes the row from the collection and then retain it for insertion into another location.
void	removeFromCollection() Removes the row from the collection.
void	resetKey() Call this if the correpsonding dataProvider row object has a change in key object values.
void	revert() Revert the row to the Database state.
void	setAttribute(int index, java.lang.Object value) Set the value for an attribute at a given index.
void	setAttribute(java.lang.String name, java.lang.Object value) Set the value for an attribute with a given name.
void	setNewRowState(byte state) Sets a new unposted row, created in this transaction, to either STATUS_NEW or STATUS_INITIALIZED mode.
void	validate() Invoke validate method for the validators attached to this Row
Node	writeXML(int depthCount, long options) Renders data in a canonical XML-format.
Node	writeXML(int depthCount, long options, XSLStylesheet xslt)
Node	writeXML(long options, com.sun.java.util.collections.HashMap voAttrMap) Renders data in a canonical XML-format.
Node	writeXML(long options, com.sun.java.util.collections.HashMap voAttrMap, XSLStylesheet xslt)

Methods inherited from class java.lang.Object

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

Constructor Detail

RowImpl

protected RowImpl(java.lang.Object rowDataProvider,
                  DCRowSetIteratorImpl rowSetIterator)

Method Detail

equals

public boolean equals(java.lang.Object obj)

getAttribute

public java.lang.Object getAttribute(int index)

Returns the data for the attribute at the given index.

Specified by:

getAttribute in interface AttributeList

Parameters:

index - attribute index

Returns:

The value of the attribute

getAttribute

public java.lang.Object getAttribute(java.lang.String name)

Returns the data for the attribute with the given name.

Specified by:

getAttribute in interface AttributeList

Parameters:

name - attribute name

Returns:

The value of the attribute

isAttributeUpdateable

public boolean isAttributeUpdateable(int index)

Description copied from interface: Row

Tests if an attribute is updateable. Returns false if the attribute is read-only and true if it is updateable.

The following logic is used for determining if the attribute is updateable. If this attribute for a View row and is one which is mapped to an Entity Attribute, and if the Entity base is marked as read-only in the View Object, the attribute is read-only.

If the Entity base is marked updateable, a check is made to see if the the current user has updateable privilege on the underlying Entity row. If not, the attribute is read-only.

After this, we check the View Object's Attribute Definition. If the Attribute Definition indicates that it is READONLY, this method returns false (read-only). If the Attribute Definition says UPDATEABLE, it drops to the Entity level to determine if the Entity level Attribute Definition says it is updateable. If the attribute is UPDATEABLE_WHILE_NEW We check to see if the 'row' is new or not. (If this attribute comes from an Entity Row, the 'row' is the Entity Row. Otherwise, the 'row' is the View Row.) If the row is new, the attribute is updateable.

Specified by:

isAttributeUpdateable in interface Row

Parameters:

index - the index of the attribute.

Returns:

true if the attribute is updateable in this row. false if not.

getStructureDef

public StructureDef getStructureDef()

Description copied from interface: Row

Returns the structure of the row.

Specified by:

getStructureDef in interface Row

Returns:

StructureDef that describes the structure of the row.

setAttribute

public void setAttribute(int index,
                         java.lang.Object value)

Set the value for an attribute at a given index.

Specified by:

setAttribute in interface AttributeList

Parameters:

index - The attribute index.

value - The value.

setAttribute

public void setAttribute(java.lang.String name,
                         java.lang.Object value)

Set the value for an attribute with a given name.

Specified by:

setAttribute in interface AttributeList

Parameters:

value - The value.

name - the attribute's name.

getAttributeCount

public int getAttributeCount()

Get the attribute count

Specified by:

getAttributeCount in interface AttributeList

Returns:

the number of attributes.

getAttributeIndexOf

public int getAttributeIndexOf(java.lang.String name)

Get the index for an attribute given the name

Specified by:

getAttributeIndexOf in interface AttributeList

Parameters:

name - The attribute name

Returns:

numerical index for given attribute name

getAttributeNames

public java.lang.String[] getAttributeNames()

Description copied from interface: AttributeList

Returns an array of attribute names in this list.

Specified by:

getAttributeNames in interface AttributeList

Returns:

an array of attribute names.

getAttributeValues

public java.lang.Object[] getAttributeValues()

Description copied from interface: AttributeList

Returns an array of attribute values in this list.

Specified by:

getAttributeValues in interface AttributeList

Returns:

an array of attribute values.

getApplicationModule

public ApplicationModule getApplicationModule()

Returns:

The ApplicationModule this Row belongs

getKey

public Key getKey()

Returns the key of the row.

Specified by:

getKey in interface Row

Returns:

The key object

resetKey

public void resetKey()

Call this if the correpsonding dataProvider row object has a change in key object values. This will force a recalculation of the row key.

validate

public void validate()

Invoke validate method for the validators attached to this Row

Specified by:

validate in interface Row

See Also:

EntityImpl.validate(), ViewRowImpl.validate()

revert

public void revert()

Revert the row to the Database state.

refresh

public void refresh(int refreshMode)

Description copied from interface: Row

Refreshes the row's attributes with values from database. refreshMode should be a combination of REFRESH_.... See REFRESH_... constants for further information.

Specified by:

refresh in interface Row

Parameters:

refreshMode - the refresh mode.

lock

public void lock()

Acquire the row provider data to be modified in this transaction space. Calls DataControl.registerDataProvider(row.getDataProvider());

Specified by:

lock in interface Row

remove

public void remove()

Delete the row.

Specified by:

remove in interface Row

removeFromCollection

public void removeFromCollection()

Description copied from interface: Row

Removes the row from the collection.

This method differs from Row.remove() in that it just removes the row from the collection. It does not remove the underlying Entity row(s) or database row(s). However, once the row is removed, it cannot be used any more. If you want to remove the row from the collection and insert it elsewhere, call Row.removeAndRetain().

Specified by:

removeFromCollection in interface Row

removeAndRetain

public void removeAndRetain()

Description copied from interface: Row

Removes the row from the collection and then retain it for insertion into another location.

This method differs from Row.remove() in that it just removes the row from the collection. It does not remove the underlying Entity row(s) or database row(s).

This method also differs from Row.removeFromCollection() in that after the row is removed from the collection, it can be inserted back into the collection at another location.

Specified by:

removeAndRetain in interface Row

writeXML

public Node writeXML(long options,
                     com.sun.java.util.collections.HashMap voAttrMap)

Description copied from interface: XMLInterface

Renders data in a canonical XML-format. The classes ViewObjectImpl and ViewRowImpl implement this method to render data in XML.

Use this method whenever data is required in XML format, either to present a UI (after converting XML data into some HTTP format using a stylesheet) or to pass the data as payload for messages via JMS.

The options parameter represents a set of bit flags that will control the writeXML behavior. The following bit flags have been defined:

• public static long XML_OPT_LIMIT_RANGE = 0x00000001 - Controls whether writeXML will only write rows in the range. If this flag is off, all rows in the row set will be written. If this flag is on, only rows in the current range will be written.
• public static long XML_OPT_CHANGES_ONLY = 0x00000002 - Controls whether only changed attribute values of an entity row is written. If this is on, only the attributes whose value has been marked as "changed" will be written. If this is off, all attributes (regardless of whether the attribute value has been changed or not) will be written. This flag is relevant only when writing EntityImpl.

The voAttrMap parameter represents in a hashmap, the mapping between a given ViewObject's definition type and the corresponding Attributes/accessors to render. A null entry in the hashmap means, render all attributes and accessors of that viewobject type.

Specified by:

writeXML in interface XMLInterface

Parameters:

options - a set of bit flags that will control the writeXML

voAttrMap - HashMap containing Definition names of ViewObjects and an array of AttributeDef to render for a ViewObject of that definition type.

writeXML

public Node writeXML(int depthCount,
                     long options)

Description copied from interface: XMLInterface

Renders data in a canonical XML-format. The classes ViewObjectImpl and ViewRowImpl implement this method to render data in XML.

Use this method whenever data is required in XML format, either to present a UI (after converting XML data into some HTTP format using a stylesheet) or to pass the data as payload for messages via JMS.

The depthcount parameter represents to what level the rendering should recurse. A depthcount of zero (0) means do not traverse any View Links while rendering. One (1) means traverse the View Links on this object but no View Links thereafter, and so on.

The options parameter represents a set of bit flags that will control the writeXML behavior. The following bit flags have been defined:

• public static long XML_OPT_LIMIT_RANGE = 0x00000001 - Controls whether writeXML will only write rows in the range. If this flag is off, all rows in the row set will be written. If this flag is on, only rows in the current range will be written.
• public static long XML_OPT_CHANGES_ONLY = 0x00000002 - Controls whether only changed attribute values of an entity row is written. If this is on, only the attributes whose value has been marked as "changed" will be written. If this is off, all attributes (regardless of whether the attribute value has been changed or not) will be written. This flag is relevant only when writing EntityImpl.

Specified by:

writeXML in interface XMLInterface

Parameters:

depthCount - represents to what level the rendering should recurse.

options - a set of bit flags that will control the writeXML behavior.

readXML

public void readXML(Element elem,
                    int depthCount)

Specified by:

readXML in interface XMLInterface

writeXML

public Node writeXML(long options,
                     com.sun.java.util.collections.HashMap voAttrMap,
                     XSLStylesheet xslt)

Specified by:

writeXML in interface XMLInterface

writeXML

public Node writeXML(int depthCount,
                     long options,
                     XSLStylesheet xslt)

Specified by:

writeXML in interface XMLInterface

readXML

public void readXML(Element elem,
                    int depthCount,
                    XSLStylesheet xslt)

Specified by:

readXML in interface XMLInterface

setNewRowState

public void setNewRowState(byte state)

Description copied from interface: Row

Sets a new unposted row, created in this transaction, to either STATUS_NEW or STATUS_INITIALIZED mode. Calling this method on a row in any other state will be a no-op.

This method should be used to create a row and then to mark it temporary (STATUS_INITIALIZED) so that an app can use the created Row to fill UIs like Table UIs with valid default values for rows. Then when the Row values are updated, UIs should once again call this method to turn the Row into new (STATUS_NEW) state before any setAttribute calls on the Row, so that the changes are validated and posted.

When a created row is in STATUS_NEW (by default) state and this method is called to turn the row in to STATUS_INITIALIZED, all updateable entities that this row comprises of, de=registers themselves from their respective transaction and validation managers. Assocation and ViewLink finders will not find/include these rows. Only the collection into which this row was inserted into will contain a reference to this row and when that collection is re-executed this row cannot be reached via the framework. To include this row again an app should call this method again with STATUS_NEW as the method-argument

When this row is in STATUS_INITIALIZED state and this method is called with STATUS_NEW state then, this new row is added back into it's relevant transaction and validation manager and will then participate in validation, transaction cycles.

Note that incase of composition if a master/detail hierarchy is being created with the intention of making them temporary (STATUS_INITIALIZED) then the logic should be: Create Master row, insert Master row into a collection, create Detail row insert detail row into a relevant collection, make detail row initialized, create/insert/change-to-initialized more detail rows and at the end set the master row as initialized.

Specified by:

setNewRowState in interface Row

Parameters:

state - This could be STATUS_NEW or STATUS_INITIALIZED.

getDataProvider

public java.lang.Object getDataProvider()