org.apache.myfaces.view.facelets.tag
Class TagAttributeImpl

java.lang.Object
  javax.faces.view.facelets.TagAttribute
      org.apache.myfaces.view.facelets.tag.TagAttributeImpl

public final class TagAttributeImpl
extends javax.faces.view.facelets.TagAttribute

Representation of a Tag's attribute in a Facelet File

Version:

$Id: TagAttribute.java,v 1.9 2008/07/13 19:01:35 rlubke Exp $

Author:

Jacob Hookom

Constructor Summary

TagAttributeImpl(javax.faces.view.Location location, java.lang.String ns, java.lang.String localName, java.lang.String qName, java.lang.String value)

Method Summary

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

Methods inherited from class java.lang.Object

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

Constructor Detail

TagAttributeImpl

public TagAttributeImpl(javax.faces.view.Location location,
                        java.lang.String ns,
                        java.lang.String localName,
                        java.lang.String qName,
                        java.lang.String value)

Method Detail

getBoolean

public boolean getBoolean(javax.faces.view.facelets.FaceletContext ctx)

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

Specified by:

getBoolean in class javax.faces.view.facelets.TagAttribute

Parameters:

ctx - FaceletContext to use

Returns:

boolean value

See Also:

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

getInt

public int getInt(javax.faces.view.facelets.FaceletContext ctx)

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

Specified by:

getInt in class javax.faces.view.facelets.TagAttribute

Parameters:

ctx - FaceletContext to use

Returns:

int value

See Also:

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

getLocalName

public java.lang.String getLocalName()

Local name of this attribute

Specified by:

getLocalName in class javax.faces.view.facelets.TagAttribute

Returns:

local name of this attribute

getLocation

public javax.faces.view.Location getLocation()

The location of this attribute in the FaceletContext

Specified by:

getLocation in class javax.faces.view.facelets.TagAttribute

Returns:

the TagAttribute's location

getMethodExpression

public javax.el.MethodExpression getMethodExpression(javax.faces.view.facelets.FaceletContext ctx,
                                                     java.lang.Class type,
                                                     java.lang.Class[] paramTypes)

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

Specified by:

getMethodExpression in class javax.faces.view.facelets.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 java.lang.String getNamespace()

The resolved Namespace for this attribute

Specified by:

getNamespace in class javax.faces.view.facelets.TagAttribute

Returns:

resolved Namespace

getObject

public java.lang.Object getObject(javax.faces.view.facelets.FaceletContext ctx)

Delegates to getObject with Object.class as a param

Specified by:

getObject in class javax.faces.view.facelets.TagAttribute

Parameters:

ctx - FaceletContext to use

Returns:

Object representation of this attribute's value

See Also:

getObject(FaceletContext, Class)

getQName

public java.lang.String getQName()

The qualified name for this attribute

Specified by:

getQName in class javax.faces.view.facelets.TagAttribute

Returns:

the qualified name for this attribute

getValue

public java.lang.String getValue()

Return the literal value of this attribute

Specified by:

getValue in class javax.faces.view.facelets.TagAttribute

Returns:

literal value

getValue

public java.lang.String getValue(javax.faces.view.facelets.FaceletContext ctx)

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

Specified by:

getValue in class javax.faces.view.facelets.TagAttribute

Parameters:

ctx - FaceletContext to use

Returns:

String value of this attribute

See Also:

getObject(FaceletContext, Class)

getObject

public java.lang.Object getObject(javax.faces.view.facelets.FaceletContext ctx,
                                  java.lang.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 javax.faces.view.facelets.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(javax.faces.view.facelets.FaceletContext ctx,
                                                   java.lang.Class type)

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

Specified by:

getValueExpression in class javax.faces.view.facelets.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 TagAttribute is literal (not #{..} or ${..})

Specified by:

isLiteral in class javax.faces.view.facelets.TagAttribute

Returns:

true if this attribute is literal

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object