com.sun.faces.facelets.tag

Class TagAttributeImpl

java.lang.Object

javax.faces.view.facelets.TagAttribute

com.sun.faces.facelets.tag.TagAttributeImpl

public class TagAttributeImpl
extends TagAttribute

Representation of a Tag's attribute in a Facelet File

Version:

$Id$

Author:

Jacob Hookom

Constructor Summary

Constructors

Constructor and Description
TagAttributeImpl()
TagAttributeImpl(Location location, String ns, String localName, String qName, String value)

Method Summary

Modifier and Type	Method and Description
boolean	getBoolean(FaceletContext ctx) If literal,return Boolean.valueOf(java.lang.String) passing our value, otherwise call getObject(FaceletContext, Class).
int	getInt(FaceletContext ctx) If literal, call Integer.parseInt(String), otherwise call getObject(FaceletContext, Class).
String	getLocalName() Local name of this attribute
Location	getLocation() The location of this attribute in the FaceletContext
javax.el.MethodExpression	getMethodExpression(FaceletContext ctx, Class type, Class[] paramTypes) Create a MethodExpression, using this attribute's value as the expression String.
String	getNamespace() The resolved Namespace for this attribute
Object	getObject(FaceletContext ctx) Delegates to getObject with Object.class as a param
Object	getObject(FaceletContext ctx, Class type) If literal, simply coerce our String literal value using an ExpressionFactory, otherwise create a ValueExpression and evaluate it.
String	getQName() The qualified name for this attribute
Tag	getTag() A reference to the Tag for which this class represents the attributes.
String	getValue() Return the literal value of this attribute
String	getValue(FaceletContext ctx) If literal, then return our value, otherwise delegate to getObject, passing String.class.
javax.el.ValueExpression	getValueExpression(FaceletContext ctx, Class type) Create a ValueExpression, using this attribute's literal value and the passed expected type.
javax.el.ValueExpression	getValueExpression(FaceletContext ctx, String expr, Class type)
boolean	isLiteral() If this TagAttributeImpl is literal (not #{..} or ${..})
void	setTag(Tag tag) Set a reference to the Tag for which this class represents the attributes.
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

TagAttributeImpl

public TagAttributeImpl()

TagAttributeImpl

public TagAttributeImpl(Location location,
                        String ns,
                        String localName,
                        String qName,
                        String value)

Method Detail

getBoolean

public boolean getBoolean(FaceletContext ctx)

If literal,return Boolean.valueOf(java.lang.String) passing our value, otherwise call getObject(FaceletContext, Class).

Specified by:

getBoolean in class TagAttribute

Parameters:

ctx - FaceletContext to use

Returns:

boolean value

See Also:

Boolean.valueOf(java.lang.String), getObject(FaceletContext, Class)

getInt

public int getInt(FaceletContext ctx)

If literal, call Integer.parseInt(String), otherwise call getObject(FaceletContext, Class).

Specified by:

getInt in class TagAttribute

Parameters:

ctx - FaceletContext to use

Returns:

int value

See Also:

Integer.parseInt(java.lang.String), getObject(FaceletContext, Class)

getLocalName

public String getLocalName()

Local name of this attribute

Specified by:

getLocalName in class TagAttribute

Returns:

local name of this attribute

getLocation

public Location getLocation()

The location of this attribute in the FaceletContext

Specified by:

getLocation in class TagAttribute

Returns:

the TagAttributeImpl's location

getMethodExpression

public javax.el.MethodExpression getMethodExpression(FaceletContext ctx,
                                                     Class type,
                                                     Class[] paramTypes)

Create a MethodExpression, using this attribute's value as the expression String.

Specified by:

getMethodExpression in class TagAttribute

Parameters:

ctx - FaceletContext to use

type - expected return type

paramTypes - parameter type

Returns:

a MethodExpression instance

See Also:

ExpressionFactory.createMethodExpression(javax.el.ELContext, java.lang.String, java.lang.Class, java.lang.Class[]), MethodExpression

getNamespace

public String getNamespace()

The resolved Namespace for this attribute

Specified by:

getNamespace in class TagAttribute

Returns:

resolved Namespace

getObject

public Object getObject(FaceletContext ctx)

Delegates to getObject with Object.class as a param

Specified by:

getObject in class TagAttribute

Parameters:

ctx - FaceletContext to use

Returns:

Object representation of this attribute's value

See Also:

getObject(FaceletContext, Class)

getQName

public String getQName()

The qualified name for this attribute

Specified by:

getQName in class TagAttribute

Returns:

the qualified name for this attribute

getTag

public Tag getTag()

Description copied from class: TagAttribute

A reference to the Tag for which this class represents the attributes. For compatibility with previous implementations, an implementation is provided that returns null.

Overrides:

getTag in class TagAttribute

Returns:

the Tag for which this class represents the attributes.

setTag

public void setTag(Tag tag)

Description copied from class: TagAttribute

Set a reference to the Tag for which this class represents the attributes. The VDL runtime must ensure that this method is called before any FaceletHandlers for this element are instantiated. For compatibility with previous implementations, a no-op implementation is provided.

Overrides:

setTag in class TagAttribute

Parameters:

tag - the tag we represent.

getValue

public String getValue()

Return the literal value of this attribute

Specified by:

getValue in class TagAttribute

Returns:

literal value

getValue

public String getValue(FaceletContext ctx)

If literal, then return our value, otherwise delegate to getObject, passing String.class.

Specified by:

getValue in class TagAttribute

Parameters:

ctx - FaceletContext to use

Returns:

String value of this attribute

See Also:

getObject(FaceletContext, Class)

getObject

public Object getObject(FaceletContext ctx,
                        Class type)

If literal, simply coerce our String literal value using an ExpressionFactory, otherwise create a ValueExpression and evaluate it.

Specified by:

getObject in class TagAttribute

Parameters:

ctx - FaceletContext to use

type - expected return type

Returns:

Object value of this attribute

See Also:

ExpressionFactory.coerceToType(java.lang.Object, java.lang.Class), ExpressionFactory.createValueExpression(javax.el.ELContext, java.lang.String, java.lang.Class), ValueExpression

getValueExpression

public javax.el.ValueExpression getValueExpression(FaceletContext ctx,
                                                   Class type)

Create a ValueExpression, using this attribute's literal value and the passed expected type.

Specified by:

getValueExpression in class TagAttribute

Parameters:

ctx - FaceletContext to use

type - expected return type

Returns:

ValueExpression instance

See Also:

ExpressionFactory.createValueExpression(javax.el.ELContext, java.lang.String, java.lang.Class), ValueExpression

isLiteral

public boolean isLiteral()

If this TagAttributeImpl is literal (not #{..} or ${..})

Specified by:

isLiteral in class TagAttribute

Returns:

true if this attribute is literal

toString

public String toString()

Overrides:

toString in class Object

getValueExpression

public javax.el.ValueExpression getValueExpression(FaceletContext ctx,
                                                   String expr,
                                                   Class type)