fr.gael.drb.value
Class DefaultValueArray

java.lang.Object
  fr.gael.drb.value.AbstractValueArray
      fr.gael.drb.value.DefaultValueArray

All Implemented Interfaces:

DrbItem, DrbSequence, Comparison, Value, ValueArray, Serializable

public class DefaultValueArray
extends AbstractValueArray

Generic array value wrapper.

See Also:

Serialized Form

Field Summary

Fields inherited from interface fr.gael.drb.value.Value

ARRAY_ID, BINARY_ID, BINARY_INTEGER_ID, BOOLEAN_ID, BYTE_ID, DATE_ID, DATE_TIME_ID, DAY_ID, DAY_TIME_DURATION_ID, DECIMAL_ID, DOUBLE_ID, DURATION_ID, FLOAT_ID, INT_ID, INTEGER_ID, LONG_ID, MONTH_DAY_ID, MONTH_ID, NULL_ID, NUMERIC_ID, OTHER_ID, SHORT_ID, STRING_ID, TIME_ID, UNKNOWN_ID, UNSIGNED_BYTE_ID, UNSIGNED_INT_ID, UNSIGNED_LONG_ID, UNSIGNED_SHORT_ID, YEAR_ID, YEAR_MONTH_DURATION_ID, YEAR_MONTH_ID

Fields inherited from interface fr.gael.drb.DrbItem

ATTRIBUTE_ITEM, NODE_ITEM, UNDEFINED_ITEM, VALUE_ITEM

Constructor Summary

DefaultValueArray(int size)
Build an BooleanArray value with the specified size.

Method Summary

void	assign(int index, Value element) Assign a value to an index
void	assign(Value v) Assign a value.
Value	convertTo(int type) Convert the value into the specified type.
int	getArrayType() Returns the Array type
Value	getElement(int index) Returns the Element value at the specified index
int	getItemType() A code that identifies the value items.
String	getName() Name of the item.
String	getNamespaceURI() Get namespace URI.
int	getPriority() Returns the BooleanArray priority
int	getType() The type identifier of this BooleanArray value.
Value	getValue() The value of the item.
int	length() Returns the number of elements in this array.
void	rename(String name) Changes the name of the item.
void	setNamespaceURI(String namespace_uri) Sets a namespace resource identifier.
Value	setValue(Value value) Changes the value of the item.
Numeric	toNumeric() Convert the value into the numeric type.
String	toString() Returns the string representation of this array

Methods inherited from class fr.gael.drb.value.AbstractValueArray

addItem, atomize, compareTo, convertArrayTo, getItem, getLength, main, removeItem

Methods inherited from class java.lang.Object

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

Methods inherited from interface fr.gael.drb.DrbItem

getItemType, getName, getNamespaceURI, getValue, rename, setNamespaceURI, setValue

Constructor Detail

DefaultValueArray

public DefaultValueArray(int size)

Build an BooleanArray value with the specified size.

Parameters:

size - the size of the array.

Method Detail

toString

public String toString()

Returns the string representation of this array

Overrides:

toString in class Object

Returns:

the sequence as a string

getType

public final int getType()

The type identifier of this BooleanArray value.

Specified by:

getType in interface Value

Returns:

an identifier of the array type, namely ARRAY_ID

getPriority

public final int getPriority()

Returns the BooleanArray priority

Returns:

the BooleanArray priority

convertTo

public final Value convertTo(int type)
                      throws ClassCastException

Convert the value into the specified type. The type must be ARRAY_ID or STRING_ID otherwise a ClassCastException is thrown

Specified by:

convertTo in interface Value

Overrides:

convertTo in class AbstractValueArray

Parameters:

type - The target type.

Returns:

The converted value.

Throws:

ClassCastException - the conversion is impossible

assign

public final void assign(Value v)
                  throws ClassCastException

Assign a value. This value must be a NumericArray otherwise a ClassCastException is thrown.

Parameters:

v - the value to be assigned.

Throws:

ClassCastException - the conversion is impossible

getArrayType

public final int getArrayType()

Returns the Array type

Returns:

the array type as an int

getElement

public final Value getElement(int index)

Returns the Element value at the specified index

Parameters:

index - the index position

Returns:

the value at this index

assign

public final void assign(int index,
                         Value element)

Assign a value to an index

Parameters:

index - position where to insert the value.

element - value to assign as a double.

length

public final int length()

Returns the number of elements in this array.

Returns:

the number of elements in this array.

getItemType

public int getItemType()

A code that identifies the value items.

Specified by:

getItemType in interface DrbItem

Returns:

The code of value items.

getName

public String getName()

Name of the item. This method always returns null.

Specified by:

getName in interface DrbItem

Returns:

null

rename

public void rename(String name)
            throws NullPointerException,
                   UnsupportedOperationException

Changes the name of the item. This method always throw an UnsupportedOperationException.

Specified by:

rename in interface DrbItem

Parameters:

name - Reference to the new name.

Throws:

UnsupportedOperationException - This exception always raised because the name property is not defined for values.

NullPointerException - This exception is overriden by an UnsupportedOperationException.

getNamespaceURI

public String getNamespaceURI()

Get namespace URI. This method always returns null.

Specified by:

getNamespaceURI in interface DrbItem

Returns:

null.

setNamespaceURI

public void setNamespaceURI(String namespace_uri)
                     throws NullPointerException,
                            UnsupportedOperationException

Sets a namespace resource identifier. This method always throw an UnsupportedOperationException.

Specified by:

setNamespaceURI in interface DrbItem

Parameters:

namespace_uri - A reference to the new namespace identifier.

Throws:

UnsupportedOperationException - This exception always raised because the name property is not defined for values.

NullPointerException - This exception is overriden by an UnsupportedOperationException.

getValue

public Value getValue()

The value of the item. The value is expressed according to one of the types supported by the fr.gael.drb.value package. Generally these types correspond to primitive types (e.g. integer, floatting points, etc.) or very low level types (e.g. string, date, etc.). On the contrary to DOM implementation all the types are allowed even the arrays, date etc. Only the Value.NULL_ID type is forbidden.

Specified by:

getValue in interface DrbItem

Returns:

The value of the attribute.

setValue

public Value setValue(Value value)
               throws NullPointerException,
                      ClassCastException,
                      UnsupportedOperationException

Changes the value of the item. This operation sets a new value of the current item.The value type of the item shall be compatible with the item implementation. If the type does not match exactly it is casted to a compatible one based on the the fr.gael.drb.value capabilities. A reference to the effectivelly assigned value is returned by the operation so it is possible to check if a cast has been performed and therefore assess the accuracy of the assignement. If the cast is not possible the operation raises an UnsupportedOperationException. If the assignment is possible and the item implementation has a physical representation the value is updated in the physical source in order to persist among sessions. It therefore possible that this operation consumses an variable time.

Specified by:

setValue in interface DrbItem

Parameters:

value - The new value of the node. This value shall not be null.

Returns:

The effectivelly assigned value. The type of this value may differ from the input one.

Throws:

NullPointerException - This exception is raised when the passed reference to the value is null. This exception may be overriden by an UnsupportedOperationException.

ClassCastException - This exception is raised when the implementation has not succeeded to cast the input value in a type compatible with the current node.

UnsupportedOperationException - This exception is raised when the implementation does not support the requested assignment for any reason.

toNumeric

public Numeric toNumeric()
                  throws ClassCastException

Convert the value into the numeric type. In case of identity conversion the value itself should be returned. If the conversion is not allowed a ClassCastException is thrown.

Returns:

The converted value.

Throws:

ClassCastException - is the convertion is impossible