org.jdom2

Class ProcessingInstruction

java.lang.Object

org.jdom2.Content

org.jdom2.ProcessingInstruction

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, NamespaceAware

Direct Known Subclasses:

LocatedProcessingInstruction

public class ProcessingInstruction
extends Content

An XML processing instruction. Methods allow the user to obtain the target of the PI as well as its data. The data can always be accessed as a String or, if the data appears akin to an attribute list, can be retrieved as name/value pairs.

Author:

Brett McLaughlin, Jason Hunter, Steven Gould

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class org.jdom2.Content

Content.CType

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Map<java.lang.String,java.lang.String>	mapData The data for the PI in name/value pairs
protected java.lang.String	rawData The data for the PI as a String
protected java.lang.String	target The target of the PI

Fields inherited from class org.jdom2.Content

ctype, parent

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ProcessingInstruction() Default, no-args constructor for implementations to use if needed.
	ProcessingInstruction(java.lang.String target) This will create a new ProcessingInstruction with the specified target.
	ProcessingInstruction(java.lang.String target, java.util.Map<java.lang.String,java.lang.String> data) This will create a new ProcessingInstruction with the specified target and data.
	ProcessingInstruction(java.lang.String target, java.lang.String data) This will create a new ProcessingInstruction with the specified target and data.

Method Summary

Modifier and Type	Method and Description
ProcessingInstruction	clone() Return a deep clone of this instance.
ProcessingInstruction	detach() Detaches this child from its parent or does nothing if the child has no parent.
java.lang.String	getData() This will return the raw data from all instructions.
java.util.List<java.lang.String>	getPseudoAttributeNames() This will return a List containing the names of the "attribute" style pieces of name/value pairs in this PI's data.
java.lang.String	getPseudoAttributeValue(java.lang.String name) This will return the value for a specific name/value pair on the PI.
java.lang.String	getTarget() This will retrieve the target of the PI.
java.lang.String	getValue() Returns the XPath 1.0 string value of this element, which is the data of this PI.
boolean	removePseudoAttribute(java.lang.String name) This will remove the pseudo attribute with the specified name.
ProcessingInstruction	setData(java.util.Map<java.lang.String,java.lang.String> data) This will set the name/value pairs within the passed Map as the pairs for the data of this PI.
ProcessingInstruction	setData(java.lang.String data) This will set the raw data for the PI.
protected ProcessingInstruction	setParent(Parent parent) Sets the parent of this Content.
ProcessingInstruction	setPseudoAttribute(java.lang.String name, java.lang.String value) This will set a pseudo attribute with the given name and value.
ProcessingInstruction	setTarget(java.lang.String newTarget) This will set the target for the PI.
java.lang.String	toString() This returns a String representation of the ProcessingInstruction, suitable for debugging.

Methods inherited from class org.jdom2.Content

equals, getCType, getDocument, getNamespacesInherited, getNamespacesInScope, getNamespacesIntroduced, getParent, getParentElement, hashCode

Methods inherited from class java.lang.Object

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

Field Detail

target

protected java.lang.String target

The target of the PI

rawData

protected java.lang.String rawData

The data for the PI as a String

mapData

protected transient java.util.Map<java.lang.String,java.lang.String> mapData

The data for the PI in name/value pairs

Constructor Detail

ProcessingInstruction

protected ProcessingInstruction()

Default, no-args constructor for implementations to use if needed.

ProcessingInstruction

public ProcessingInstruction(java.lang.String target)

This will create a new ProcessingInstruction with the specified target.

Parameters:

target - String target of PI.

Throws:

IllegalTargetException - if the given target is illegal as a processing instruction name.

ProcessingInstruction

public ProcessingInstruction(java.lang.String target,
                             java.util.Map<java.lang.String,java.lang.String> data)

This will create a new ProcessingInstruction with the specified target and data.

Parameters:

target - String target of PI.

data - Map data for PI, in name/value pairs

Throws:

IllegalTargetException - if the given target is illegal as a processing instruction name.

ProcessingInstruction

public ProcessingInstruction(java.lang.String target,
                             java.lang.String data)

This will create a new ProcessingInstruction with the specified target and data.

Parameters:

target - String target of PI.

data - String data for PI.

Throws:

IllegalTargetException - if the given target is illegal as a processing instruction name.

Method Detail

setTarget

public ProcessingInstruction setTarget(java.lang.String newTarget)

This will set the target for the PI.

Parameters:

newTarget - String new target of PI.

Returns:

ProcessingInstruction - this PI modified.

getValue

public java.lang.String getValue()

Returns the XPath 1.0 string value of this element, which is the data of this PI.

Specified by:

getValue in class Content

Returns:

the data of this PI

getTarget

public java.lang.String getTarget()

This will retrieve the target of the PI.

Returns:

String - target of PI.

getData

public java.lang.String getData()

This will return the raw data from all instructions.

Returns:

String - data of PI.

getPseudoAttributeNames

public java.util.List<java.lang.String> getPseudoAttributeNames()

This will return a List containing the names of the "attribute" style pieces of name/value pairs in this PI's data.

Returns:

List - the List containing the "attribute" names.

setData

public ProcessingInstruction setData(java.lang.String data)

This will set the raw data for the PI.

Parameters:

data - String data of PI.

Returns:

ProcessingInstruction - this PI modified.

setData

public ProcessingInstruction setData(java.util.Map<java.lang.String,java.lang.String> data)

This will set the name/value pairs within the passed Map as the pairs for the data of this PI. The keys should be the pair name and the values should be the pair values.

Parameters:

data - new map data to use

Returns:

ProcessingInstruction - modified PI.

getPseudoAttributeValue

public java.lang.String getPseudoAttributeValue(java.lang.String name)

This will return the value for a specific name/value pair on the PI. If no such pair is found for this PI, null is returned.

Parameters:

name - String name of name/value pair to lookup value for.

Returns:

String - value of name/value pair.

setPseudoAttribute

public ProcessingInstruction setPseudoAttribute(java.lang.String name,
                                                java.lang.String value)

This will set a pseudo attribute with the given name and value. If the PI data is not already in a pseudo-attribute format, this will replace the existing data.

Parameters:

name - String name of pair.

value - String value for pair.

Returns:

ProcessingInstruction this PI modified.

removePseudoAttribute

public boolean removePseudoAttribute(java.lang.String name)

This will remove the pseudo attribute with the specified name.

Parameters:

name - name of pseudo attribute to remove

Returns:

boolean - whether the requested instruction was removed.

toString

public java.lang.String toString()

This returns a String representation of the ProcessingInstruction, suitable for debugging. If the XML representation of the ProcessingInstruction is desired, XMLOutputter.outputString(ProcessingInstruction) should be used.

Overrides:

toString in class java.lang.Object

Returns:

String - information about the ProcessingInstruction

clone

public ProcessingInstruction clone()

Return a deep clone of this instance. Even if this instance has a parent, the returned clone will not.

All JDOM core classes are Cloneable, and never throw CloneNotSupportedException. Additionally all Cloneable JDOM classes return the correct type of instance from this method and there is no need to cast the result (co-variant return value).

Subclasses of this should still call super.clone() in their clone method.

Overrides:

clone in class Content

detach

public ProcessingInstruction detach()

Description copied from class: Content

Detaches this child from its parent or does nothing if the child has no parent.

This method can be overridden by particular Content subclasses to return a specific type of Content (co-variant return type). All overriding subclasses must call super.detach();

Overrides:

detach in class Content

Returns:

this child detached

setParent

protected ProcessingInstruction setParent(Parent parent)

Description copied from class: Content

Sets the parent of this Content. The caller is responsible for removing any pre-existing parentage.

This method can be overridden by particular Content subclasses to return a specific type of Content (co-variant return type). All overriding subclasses must call super.setParent(Parent);

Overrides:

setParent in class Content

Parameters:

parent - new parent element

Returns:

the target element