context.arch.storage
Class Attributes

java.lang.Object
  |
  +--java.util.AbstractCollection
        |
        +--java.util.AbstractList
              |
              +--java.util.Vector
                    |
                    +--context.arch.storage.Attributes

public class Attributes

extends java.util.Vector

This class is a container for a group of related attributes. Attributes can be added, removed, and found in the container.

See Also:

Serialized Form

Field Summary

static java.lang.String	ALL Tag to indicate all attributes are to be used
static java.lang.String	ATTRIBUTES Tag for attributes
static char	SEPARATOR Connector for nested attributes
static java.lang.String	SEPARATOR_STRING Connector for nested attributes - String

Fields inherited from class java.util.Vector

capacityIncrement, elementCount, elementData

Fields inherited from class java.util.AbstractList

modCount

Constructor Summary

Attributes()
Empty constructor

Attributes(DataObject data)
Constructor that takes a DataObject as a parameter.

Method Summary

void	addAttribute(Attribute att) Adds the given Attribute object to the container.
void	addAttribute(java.lang.String name) Adds the given attribute name.
void	addAttribute(java.lang.String name, Attributes attributes) Adds the given attribute name and value to the container.
void	addAttribute(java.lang.String name, Attributes attributes, java.lang.String type) Adds the given attribute name, subAttributes and type to the container
void	addAttribute(java.lang.String name, java.lang.String type) Adds the given attribute name and data type
void	addAttributes(Attributes atts) Adds the given Attributes object to the container.
Attribute	getAttribute(java.lang.String name) This method returns the Attribute with the given name from this list of Attributes.
Attribute	getAttribute(java.lang.String name, java.lang.String prefix) This method returns the Attribute with the given name from this list of Attributes.
Attribute	getAttributeAt(int index) Returns the Attribute object at the given index
Attributes	getSubset(Attributes atts) This method takes a DataObject containing the list of attributes (names) wanted and it filters all the rest out from this Attributes object.
boolean	hasAttribute(Attribute att) Determines whether the given Attribute object is in the container
boolean	hasAttribute(java.lang.String name, Attributes attributes) Determines whether the given attribute name and subAttributes are in the container, using the default datatype.
boolean	hasAttribute(java.lang.String name, Attributes attributes, java.lang.String type) Determines whether the given attribute name, subAttributes and type are in the container,
int	indexOfAttribute(Attribute att) Returns the index at which the Attribute object occurs
int	indexOfAttribute(java.lang.String name, Attributes attributes) Returns the index at which the given attribute name and subAttributes occurs, using the default datatype
int	indexOfAttribute(java.lang.String name, Attributes attributes, java.lang.String type) Returns the index at which the given attribute name, subAttributes and type occurs.
int	numAttributes() Returns the number of Attributes in the container return the number of Attributes in the container
void	removeAttribute(java.lang.String name) This method removes the Attribute with the given name from this list of Attributes.
Attribute	removeAttribute(java.lang.String name, java.lang.String prefix) This method removes the Attribute with the given name from this list of Attributes.
void	removeAttributeAt(int index) Removes the Attribute object at the given index
java.lang.String	toAString() A printable version of this class.
DataObject	toDataObject() Converts to a DataObject.
java.util.Hashtable	toTypesHashtable() Converts the attributes name-type pairs to a hashtable where the keys are the names and the values are the types.
java.util.Hashtable	toTypesHashtable(java.lang.String prefix) Converts the attributes name-type pairs to a hashtable where the keys are the names and the values are the types.

Methods inherited from class java.util.Vector

add, add, addAll, addAll, addElement, capacity, clear, clone, contains, containsAll, copyInto, elementAt, elements, ensureCapacity, equals, firstElement, get, hashCode, indexOf, indexOf, insertElementAt, isEmpty, lastElement, lastIndexOf, lastIndexOf, remove, remove, removeAll, removeAllElements, removeElement, removeElementAt, removeRange, retainAll, set, setElementAt, setSize, size, subList, toArray, toArray, toString, trimToSize

Methods inherited from class java.util.AbstractList

iterator, listIterator, listIterator

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

SEPARATOR

public static final char SEPARATOR

Connector for nested attributes

SEPARATOR_STRING

public static final java.lang.String SEPARATOR_STRING

Connector for nested attributes - String

ATTRIBUTES

public static final java.lang.String ATTRIBUTES

Tag for attributes

ALL

public static final java.lang.String ALL

Tag to indicate all attributes are to be used

Constructor Detail

Attributes

public Attributes()

Empty constructor

Attributes

public Attributes(DataObject data)

Constructor that takes a DataObject as a parameter. The DataObject is expected to contain an tag. The constructor stores the encoded data in an Attributes object.

Parameters:

data - DataObject that contains the attribute name (and possibly type) info

Method Detail

toDataObject

public DataObject toDataObject()

Converts to a DataObject.

Returns:

Attributes object converted to an DataObject

addAttribute

public void addAttribute(Attribute att)

Adds the given Attribute object to the container.

Parameters:

att - Attribute to add

addAttribute

public void addAttribute(java.lang.String name)

Adds the given attribute name.

Parameters:

name - Name of the attribute to add

addAttribute

public void addAttribute(java.lang.String name,
                         java.lang.String type)

Adds the given attribute name and data type

Parameters:

name - Name of the attribute to add

type - Datatype of the attribute to add

addAttribute

public void addAttribute(java.lang.String name,
                         Attributes attributes)

Adds the given attribute name and value to the container. It uses a default datatype.

Parameters:

name - Name of the attribute to add

attributes - SubAttributes of the attribute to add

addAttribute

public void addAttribute(java.lang.String name,
                         Attributes attributes,
                         java.lang.String type)

Adds the given attribute name, subAttributes and type to the container

Parameters:

name - Name of the attribute to add

attributes - SubAttributes of the attribute to add

type - Datatype of the attribute to add

addAttributes

public void addAttributes(Attributes atts)

Adds the given Attributes object to the container.

Parameters:

atts - Attributes to add

getAttributeAt

public Attribute getAttributeAt(int index)

Returns the Attribute object at the given index

Parameters:

index - Index into the container

Returns:

Attribute at the specified index

removeAttributeAt

public void removeAttributeAt(int index)

Removes the Attribute object at the given index

Parameters:

index - Index into the container

hasAttribute

public boolean hasAttribute(Attribute att)

Determines whether the given Attribute object is in the container

Parameters:

att - Attribute to check

Returns:

whether Attribute is in the container

hasAttribute

public boolean hasAttribute(java.lang.String name,
                            Attributes attributes)

Determines whether the given attribute name and subAttributes are in the container, using the default datatype.

Parameters:

name - Name of the attribute to check

attributes - SubAttributes of the attribute to check

Returns:

whether the given attribute name and subAttributes are in the container

hasAttribute

public boolean hasAttribute(java.lang.String name,
                            Attributes attributes,
                            java.lang.String type)

Determines whether the given attribute name, subAttributes and type are in the container,

Parameters:

name - Name of the attribute to check

attributes - SubAttributes of the attribute to check

type - Datatype of the attribute to check

Returns:

whether the given attribute name, subAttributes and type are in the container

indexOfAttribute

public int indexOfAttribute(Attribute att)

Returns the index at which the Attribute object occurs

Parameters:

att - Attribute to look for

Returns:

index of the specified Attribute

indexOfAttribute

public int indexOfAttribute(java.lang.String name,
                            Attributes attributes)

Returns the index at which the given attribute name and subAttributes occurs, using the default datatype

Parameters:

name - Name of the attribute to look for

attributes - SubAttributes of the attribute to look for

Returns:

index of the specified Attribute

indexOfAttribute

public int indexOfAttribute(java.lang.String name,
                            Attributes attributes,
                            java.lang.String type)

Returns the index at which the given attribute name, subAttributes and type occurs.

Parameters:

name - Name of the attribute to look for

attributes - SubAttributes of the attribute to look for

type - Datatype of the attribute to look for

Returns:

index of the specified Attribute

numAttributes

public int numAttributes()

Returns the number of Attributes in the container return the number of Attributes in the container

getAttribute

public Attribute getAttribute(java.lang.String name)

This method returns the Attribute with the given name from this list of Attributes.

Parameters:

name - of the Attribute to return

Returns:

Attribute with the given name

getAttribute

public Attribute getAttribute(java.lang.String name,
                              java.lang.String prefix)

This method returns the Attribute with the given name from this list of Attributes.

Parameters:

name - of the Attribute to return

prefix - Structure name to use

Returns:

Attribute with the given name

removeAttribute

public void removeAttribute(java.lang.String name)

This method removes the Attribute with the given name from this list of Attributes. It's up to the caller to make sure the Attribute exists.

Parameters:

name - of the Attribute to remove

removeAttribute

public Attribute removeAttribute(java.lang.String name,
                                 java.lang.String prefix)

This method removes the Attribute with the given name from this list of Attributes. It's up to the caller to make sure the Attribute exists.

Parameters:

name - of the Attribute to remove

prefix - Structure name to use

getSubset

public Attributes getSubset(Attributes atts)

This method takes a DataObject containing the list of attributes (names) wanted and it filters all the rest out from this Attributes object.

Parameters:

atts - Attributes object containing the attributes to return

Returns:

filtered Attributes object

toTypesHashtable

public java.util.Hashtable toTypesHashtable()

Converts the attributes name-type pairs to a hashtable where the keys are the names and the values are the types. AKD - problem if two attributes have same name but different types

toTypesHashtable

public java.util.Hashtable toTypesHashtable(java.lang.String prefix)

Converts the attributes name-type pairs to a hashtable where the keys are the names and the values are the types. This method allows the use of a prefix for structures. AKD - problem if two attributes have same name but different types

toAString

public java.lang.String toAString()

A printable version of this class.

Returns:

String version of this class