JSF Schema

Table of Contents

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Schema Document Properties

Target Namespace http://xmlns.jcp.org/xml/ns/javaee
Version 2.2
Element and Attribute Namespaces
  • Global element and attribute declarations belong to this schema's target namespace.
  • By default, local element declarations belong to this schema's target namespace.
  • By default, local attribute declarations have no namespace.
Schema Composition
  • This schema includes components from the following schema document(s):
    • javaee_7.xsd
Documentation DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. Copyright (c) 2011-2013 Oracle and/or its affiliates. All rights reserved. The contents of this file are subject to the terms of either the GNU General Public License Version 2 only ("GPL") or the Common Development and Distribution License("CDDL") (collectively, the "License"). You may not use this file except in compliance with the License. You can obtain a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html or packager/legal/LICENSE.txt. See the License for the specific language governing permissions and limitations under the License. When distributing the software, include this License Header Notice in each file and include the License file at packager/legal/LICENSE.txt. GPL Classpath Exception: Oracle designates this particular file as subject to the "Classpath" exception as provided by Oracle in the GPL Version 2 section of the License file that accompanied this code. Modifications: If applicable, add the following below the License Header, with the fields enclosed by brackets [] replaced by your own identifying information: "Portions Copyright [year] [name of copyright owner]" Contributor(s): If you wish your version of this file to be governed by only the CDDL or only the GPL Version 2, indicate your decision by adding "[Contributor] elects to include this software in this distribution under the [CDDL or GPL Version 2] license." If you don't indicate a single choice of license, a recipient has the option to distribute your version of this file under either the CDDL, the GPL Version 2 or to extend the choice of license to its licensees as provided above. However, if you add GPL Version 2 code and therefore, elected the GPL Version 2 license, then the option applies only if the new code is made subject to such option by the copyright holder.

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The XML Schema for the Tag Libraries in the JavaServer Faces Standard Facelets View Declaration Language (Facelets VDL) (Version 2.2).

JSF 2.2 Facelet Tag Libraries that wish to conform to this schema must declare it in the following manner.

<facelet-taglib xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-facelettaglibary_2_2.xsd" version="2.2"> ... </facelet-taglib>

The instance documents may indicate the published version of the schema using xsi:schemaLocation attribute for javaee namespace with the following location:

http://xmlns.jcp.org/xml/ns/javaee/web-facelettaglibary_2_2.xsd

Declared Namespaces

Prefix Namespace
xml http://www.w3.org/XML/1998/namespace
javaee http://xmlns.jcp.org/xml/ns/javaee
xsd http://www.w3.org/2001/XMLSchema
Schema Component Representation
<xsd:schema targetNamespace="http://xmlns.jcp.org/xml/ns/javaee" elementFormDefault="qualified" attributeFormDefault="unqualified" version="2.2">
<xsd:include schemaLocation="javaee_7.xsd"/>
...
</xsd:schema>
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Global Declarations

Element: facelet-taglib

Name facelet-taglib
Type javaee:facelet-taglibType
Nillable no
Abstract no
XML Instance Representation
<javaee:facelet-taglib
id=" xsd:ID [0..1]"
version=" javaee:facelet-taglib-versionType [1]">
<!--
Uniqueness Constraint - facelet-taglib-tagname-uniqueness
Selector - javaee:tag
Field(s) - javaee:tag-name
-->
<!--
Uniqueness Constraint - faces-config-behavior-ID-uniqueness
Selector - javaee:behavior
Field(s) - javaee:behavior-id
-->
<!--
Uniqueness Constraint - faces-config-converter-ID-uniqueness
Selector - javaee:converter
Field(s) - javaee:converter-id
-->
<!--
Uniqueness Constraint - faces-config-validator-ID-uniqueness
Selector - javaee:validator
Field(s) - javaee:validator-id
-->

Model group reference (not shown): javaee:descriptionGroup [1]
Start Choice [1]
<javaee:library-class> javaee:fully-qualified-classType </javaee:library-class> [1]
<javaee:namespace> javaee:string </javaee:namespace> [1]
<javaee:short-name> javaee:string </javaee:short-name> [0..1] ?
<javaee:composite-library-name> javaee:string </javaee:composite-library-name> [0..1]
Start Choice [0..*]
<javaee:tag> javaee:facelet-taglib-tagType </javaee:tag> [1]
<javaee:function> javaee:facelet-taglib-functionType </javaee:function> [1]
End Choice
End Choice
<javaee:taglib-extension> javaee:facelet-taglib-extensionType </javaee:taglib-extension> [0..*]
</javaee:facelet-taglib>
Schema Component Representation
<xsd:element name="facelet-taglib" type=" javaee:facelet-taglibType ">
<xsd:unique name="facelet-taglib-tagname-uniqueness">
<xsd:selector xpath="javaee:tag"/>
<xsd:field xpath="javaee:tag-name"/>
</xsd:unique>
<xsd:unique name="faces-config-behavior-ID-uniqueness">
<xsd:selector xpath="javaee:behavior"/>
<xsd:field xpath="javaee:behavior-id"/>
</xsd:unique>
<xsd:unique name="faces-config-converter-ID-uniqueness">
<xsd:selector xpath="javaee:converter"/>
<xsd:field xpath="javaee:converter-id"/>
</xsd:unique>
<xsd:unique name="faces-config-validator-ID-uniqueness">
<xsd:selector xpath="javaee:validator"/>
<xsd:field xpath="javaee:validator-id"/>
</xsd:unique>
</xsd:element>
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Global Definitions

Complex Type: facelet-taglib-canonical-nameType

Super-types: xsd:NCName < facelet-taglib-canonical-nameType (by extension)
Sub-types: None
Name facelet-taglib-canonical-nameType
Abstract no
Documentation

Defines the canonical name of a tag or attribute being defined.

The name must conform to the lexical rules for an NCName

XML Instance Representation
<...
id=" xsd:ID [0..1]">
xsd:NCName
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-canonical-nameType">
<xsd:simpleContent>
<xsd:extension base=" xsd:NCName ">
<xsd:attribute name="id" type=" xsd:ID "/>
</xsd:extension>
</xsd:simpleContent>
</xsd:complexType>
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Complex Type: facelet-taglib-extensionType

Super-types: None
Sub-types: None
Name facelet-taglib-extensionType
Abstract no
Documentation

Extension element for facelet-taglib. It may contain implementation specific content.

XML Instance Representation
<...
id=" xsd:ID [0..1]">
Allow any elements from any namespace (lax validation). [0..*]
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-extensionType">
<xsd:sequence>
<xsd:any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
<xsd:attribute name="id" type=" xsd:ID "/>
</xsd:complexType>
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Complex Type: facelet-taglib-functionType

Super-types: None
Sub-types: None
Name facelet-taglib-functionType
Abstract no
Documentation

If the tag library XML file contains individual function declarations rather than pointing to a library-class or a declaring a composite-library name, the individual functions are enclosed in function elements.

XML Instance Representation
<...>
Model group reference (not shown): javaee:descriptionGroup [1]
<javaee:function-name> javaee:string </javaee:function-name> [1]
<javaee:function-class> javaee:fully-qualified-classType </javaee:function-class> [1]
<javaee:function-signature> javaee:string </javaee:function-signature> [1]
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-functionType">
<xsd:sequence>
<xsd:group ref=" javaee:descriptionGroup "/>
<xsd:element name="function-name" type=" javaee:string "/>
<xsd:element name="function-class" type=" javaee:fully-qualified-classType "/>
<xsd:element name="function-signature" type=" javaee:string "/>
</xsd:sequence>
</xsd:complexType>
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Complex Type: facelet-taglib-tag-attributeType

Super-types: None
Sub-types: None
Name facelet-taglib-tag-attributeType
Abstract no
Documentation

The attribute element defines an attribute for the nesting tag. The attribute element may have several subelements defining:

description

a description of the attribute

name

the name of the attribute

required

whether the attribute is required or optional

type

the type of the attribute

XML Instance Representation
<...
id=" xsd:ID [0..1]">
Model group reference (not shown): javaee:descriptionGroup [1]
<javaee:name> javaee:xsdNMTOKENType </javaee:name> [1]
<javaee:required> javaee:generic-booleanType </javaee:required> [0..1] ?
Start Choice [1]
<javaee:type> javaee:fully-qualified-classType </javaee:type> [0..1] ?
<javaee:method-signature> javaee:string </javaee:method-signature> [0..1] ?
End Choice
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-tag-attributeType">
<xsd:sequence>
<xsd:group ref=" javaee:descriptionGroup "/>
<xsd:element name="name" type=" javaee:xsdNMTOKENType "/>
<xsd:element name="required" type=" javaee:generic-booleanType " minOccurs="0"/>
<xsd:choice>
<xsd:element name="type" type=" javaee:fully-qualified-classType " minOccurs="0"/>
<xsd:element name="method-signature" type=" javaee:string " minOccurs="0"/>
</xsd:choice>
</xsd:sequence>
<xsd:attribute name="id" type=" xsd:ID "/>
</xsd:complexType>
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Complex Type: facelet-taglib-tag-behavior-extensionType

Super-types: None
Sub-types: None
Name facelet-taglib-tag-behavior-extensionType
Abstract no
Documentation

Extension element for behavior. It may contain implementation specific content.

XML Instance Representation
<...
id=" xsd:ID [0..1]">
Allow any elements from any namespace (lax validation). [0..*]
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-tag-behavior-extensionType">
<xsd:sequence>
<xsd:any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
<xsd:attribute name="id" type=" xsd:ID "/>
</xsd:complexType>
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Complex Type: facelet-taglib-tag-behaviorType

Super-types: None
Sub-types: None
Name facelet-taglib-tag-behaviorType
Abstract no
Documentation

Within a tag element, the behavior element encapsulates information specific to a JSF Behavior.

XML Instance Representation
<...>
Model group reference (not shown): javaee:descriptionGroup [1]
<javaee:behavior-id> javaee:string </javaee:behavior-id> [1]
<javaee:handler-class> javaee:fully-qualified-classType </javaee:handler-class> [0..1]
<javaee:behavior-extension> javaee:facelet-taglib-tag-behavior-extensionType </javaee:behavior-extension> [0..*]
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-tag-behaviorType">
<xsd:sequence>
<xsd:group ref=" javaee:descriptionGroup "/>
<xsd:element name="behavior-id" type=" javaee:string " minOccurs="1" maxOccurs="1"/>
<xsd:element name="handler-class" type=" javaee:fully-qualified-classType " minOccurs="0" maxOccurs="1"/>
<xsd:element name="behavior-extension" type=" javaee:facelet-taglib-tag-behavior-extensionType " minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
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Complex Type: facelet-taglib-tag-component-extensionType

Super-types: None
Sub-types: None
Name facelet-taglib-tag-component-extensionType
Abstract no
Documentation

Extension element for component It may contain implementation specific content.

XML Instance Representation
<...
id=" xsd:ID [0..1]">
Allow any elements from any namespace (lax validation). [0..*]
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-tag-component-extensionType">
<xsd:sequence>
<xsd:any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
<xsd:attribute name="id" type=" xsd:ID "/>
</xsd:complexType>
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Complex Type: facelet-taglib-tag-componentType

Super-types: None
Sub-types: None
Name facelet-taglib-tag-componentType
Abstract no
Documentation

Within a tag element, the component element encapsulates information specific to a JSF UIComponent.

This element must have exactly one of <component-type>, <resource-id>, or <handler-class> among its child elements.

XML Instance Representation
<...>
Model group reference (not shown): javaee:descriptionGroup [1]
Start Choice [0..*]
<javaee:component-type> javaee:string </javaee:component-type> [1]
<javaee:resource-id> javaee:string </javaee:resource-id> [1] ?
<javaee:handler-class> javaee:fully-qualified-classType </javaee:handler-class> [1]
End Choice
<javaee:renderer-type> javaee:string </javaee:renderer-type> [0..1]
<javaee:component-extension> javaee:facelet-taglib-tag-component-extensionType </javaee:component-extension> [0..*]
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-tag-componentType">
<xsd:sequence>
<xsd:group ref=" javaee:descriptionGroup "/>
<xsd:choice minOccurs="0" maxOccurs="unbounded">
<xsd:element name="component-type" type=" javaee:string "/>
<xsd:element name="resource-id" type=" javaee:string "/>
<xsd:element name="handler-class" type=" javaee:fully-qualified-classType "/>
</xsd:choice>
<xsd:element name="renderer-type" type=" javaee:string " minOccurs="0" maxOccurs="1"/>
<xsd:element name="component-extension" type=" javaee:facelet-taglib-tag-component-extensionType " minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
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Complex Type: facelet-taglib-tag-converter-extensionType

Super-types: None
Sub-types: None
Name facelet-taglib-tag-converter-extensionType
Abstract no
Documentation

Extension element for converter It may contain implementation specific content.

XML Instance Representation
<...
id=" xsd:ID [0..1]">
Allow any elements from any namespace (lax validation). [0..*]
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-tag-converter-extensionType">
<xsd:sequence>
<xsd:any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
<xsd:attribute name="id" type=" xsd:ID "/>
</xsd:complexType>
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Complex Type: facelet-taglib-tag-converterType

Super-types: None
Sub-types: None
Name facelet-taglib-tag-converterType
Abstract no
Documentation

Within a tag element, the converter element encapsulates information specific to a JSF Converter.

XML Instance Representation
<...>
Model group reference (not shown): javaee:descriptionGroup [1]
<javaee:converter-id> javaee:string </javaee:converter-id> [1]
<javaee:handler-class> javaee:fully-qualified-classType </javaee:handler-class> [0..1]
<javaee:converter-extension> javaee:facelet-taglib-tag-converter-extensionType </javaee:converter-extension> [0..*]
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-tag-converterType">
<xsd:sequence>
<xsd:group ref=" javaee:descriptionGroup "/>
<xsd:element name="converter-id" type=" javaee:string " minOccurs="1" maxOccurs="1"/>
<xsd:element name="handler-class" type=" javaee:fully-qualified-classType " minOccurs="0" maxOccurs="1"/>
<xsd:element name="converter-extension" type=" javaee:facelet-taglib-tag-converter-extensionType " minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
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Complex Type: facelet-taglib-tag-extensionType

Super-types: None
Sub-types: None
Name facelet-taglib-tag-extensionType
Abstract no
Documentation

Extension element for tag It may contain implementation specific content.

XML Instance Representation
<...
id=" xsd:ID [0..1]">
Allow any elements from any namespace (lax validation). [0..*]
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-tag-extensionType">
<xsd:sequence>
<xsd:any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
<xsd:attribute name="id" type=" xsd:ID "/>
</xsd:complexType>
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Complex Type: facelet-taglib-tagType

Super-types: None
Sub-types: None
Name facelet-taglib-tagType
Abstract no
Documentation

If the tag library XML file contains individual tag declarations rather than pointing to a library-class or a declaring a composite-library name, the individual tags are enclosed in tag elements.

XML Instance Representation
<...>
Model group reference (not shown): javaee:descriptionGroup [1]
<javaee:tag-name> javaee:facelet-taglib-canonical-nameType </javaee:tag-name> [1]
Start Choice [1]
<javaee:handler-class> javaee:fully-qualified-classType </javaee:handler-class> [1]
<javaee:behavior> javaee:facelet-taglib-tag-behaviorType </javaee:behavior> [1]
<javaee:component> javaee:facelet-taglib-tag-componentType </javaee:component> [1]
<javaee:converter> javaee:facelet-taglib-tag-converterType </javaee:converter> [1]
<javaee:validator> javaee:facelet-taglib-tag-validatorType </javaee:validator> [1]
<javaee:source> javaee:string </javaee:source> [1]
End Choice
<javaee:attribute> javaee:facelet-taglib-tag-attributeType </javaee:attribute> [0..*]
<javaee:tag-extension> javaee:facelet-taglib-tag-extensionType </javaee:tag-extension> [0..*]
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-tagType">
<xsd:sequence>
<xsd:group ref=" javaee:descriptionGroup "/>
<xsd:element name="tag-name" type=" javaee:facelet-taglib-canonical-nameType "/>
<xsd:choice>
<xsd:element name="handler-class" type=" javaee:fully-qualified-classType "/>
<xsd:element name="behavior" type=" javaee:facelet-taglib-tag-behaviorType "/>
<xsd:element name="component" type=" javaee:facelet-taglib-tag-componentType "/>
<xsd:element name="converter" type=" javaee:facelet-taglib-tag-converterType "/>
<xsd:element name="validator" type=" javaee:facelet-taglib-tag-validatorType "/>
<xsd:element name="source" type=" javaee:string "/>
</xsd:choice>
<xsd:element name="attribute" type=" javaee:facelet-taglib-tag-attributeType " minOccurs="0" maxOccurs="unbounded"/>
<xsd:element name="tag-extension" type=" javaee:facelet-taglib-tag-extensionType " minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
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Complex Type: facelet-taglib-tag-validator-extensionType

Super-types: None
Sub-types: None
Name facelet-taglib-tag-validator-extensionType
Abstract no
Documentation

Extension element for validator It may contain implementation specific content.

XML Instance Representation
<...
id=" xsd:ID [0..1]">
Allow any elements from any namespace (lax validation). [0..*]
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-tag-validator-extensionType">
<xsd:sequence>
<xsd:any namespace="##any" processContents="lax" minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
<xsd:attribute name="id" type=" xsd:ID "/>
</xsd:complexType>
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Complex Type: facelet-taglib-tag-validatorType

Super-types: None
Sub-types: None
Name facelet-taglib-tag-validatorType
Abstract no
Documentation

Within a tag element, the validator element encapsulates information specific to a JSF Validator.

XML Instance Representation
<...>
Model group reference (not shown): javaee:descriptionGroup [1]
<javaee:validator-id> javaee:string </javaee:validator-id> [1]
<javaee:handler-class> javaee:fully-qualified-classType </javaee:handler-class> [0..1]
<javaee:validator-extension> javaee:facelet-taglib-tag-validator-extensionType </javaee:validator-extension> [0..*]
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglib-tag-validatorType">
<xsd:sequence>
<xsd:group ref=" javaee:descriptionGroup "/>
<xsd:element name="validator-id" type=" javaee:string " minOccurs="1" maxOccurs="1"/>
<xsd:element name="handler-class" type=" javaee:fully-qualified-classType " minOccurs="0" maxOccurs="1"/>
<xsd:element name="validator-extension" type=" javaee:facelet-taglib-tag-validator-extensionType " minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
</xsd:complexType>
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Complex Type: facelet-taglibType

Super-types: None
Sub-types: None
Name facelet-taglibType
Abstract no
Documentation

The top level XML element in a facelet tag library XML file.

XML Instance Representation
<...
id=" xsd:ID [0..1]"
version=" javaee:facelet-taglib-versionType [1]">
Model group reference (not shown): javaee:descriptionGroup [1]
Start Choice [1]
<javaee:library-class> javaee:fully-qualified-classType </javaee:library-class> [1]
<javaee:namespace> javaee:string </javaee:namespace> [1]
<javaee:short-name> javaee:string </javaee:short-name> [0..1] ?
<javaee:composite-library-name> javaee:string </javaee:composite-library-name> [0..1]
Start Choice [0..*]
<javaee:tag> javaee:facelet-taglib-tagType </javaee:tag> [1]
<javaee:function> javaee:facelet-taglib-functionType </javaee:function> [1]
End Choice
End Choice
<javaee:taglib-extension> javaee:facelet-taglib-extensionType </javaee:taglib-extension> [0..*]
</...>
Schema Component Representation
<xsd:complexType name="facelet-taglibType">
<xsd:sequence>
<xsd:group ref=" javaee:descriptionGroup "/>
<xsd:choice>
<xsd:element name="library-class" type=" javaee:fully-qualified-classType "/>
<xsd:sequence>
<xsd:element name="namespace" type=" javaee:string "/>
<xsd:element name="short-name" type=" javaee:string " minOccurs="0" maxOccurs="1"/>
<xsd:element name="composite-library-name" type=" javaee:string " minOccurs="0" maxOccurs="1"/>
<xsd:choice minOccurs="0" maxOccurs="unbounded">
<xsd:element name="tag" type=" javaee:facelet-taglib-tagType "/>
<xsd:element name="function" type=" javaee:facelet-taglib-functionType "/>
</xsd:choice>
</xsd:sequence>
</xsd:choice>
<xsd:element name="taglib-extension" type=" javaee:facelet-taglib-extensionType " minOccurs="0" maxOccurs="unbounded"/>
</xsd:sequence>
<xsd:attribute name="id" type=" xsd:ID "/>
<xsd:attribute name="version" type=" javaee:facelet-taglib-versionType " use="required"/>
</xsd:complexType>
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Simple Type: facelet-taglib-versionType

Super-types: xsd:token < facelet-taglib-versionType (by restriction)
Sub-types: None
Name facelet-taglib-versionType
Content
  • Base XSD Type: token
  • value comes from list: {'2.2'}
Documentation

This type contains the recognized versions of facelet-taglib supported.

Schema Component Representation
<xsd:simpleType name="facelet-taglib-versionType">
<xsd:restriction base=" xsd:token ">
<xsd:enumeration value="2.2"/>
</xsd:restriction>
</xsd:simpleType>
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Legend

Complex Type:

Schema Component Type

AusAddress

Schema Component Name
Super-types: Address < AusAddress (by extension)
Sub-types:
  • QLDAddress (by restriction)
If this schema component is a type definition, its type hierarchy is shown in a gray-bordered box.
Name AusAddress
Abstract no
The table above displays the properties of this schema component.
XML Instance Representation
<... country="Australia" >
<unitNo> string </unitNo> [0..1]
<houseNo> string </houseNo> [1]
<street> string </street> [1]
Start Choice [1]
<city> string </city> [1]
<town> string </town> [1]
End Choice
<state> AusStates </state> [1]
<postcode> string <<pattern = [1-9][0-9]{3}>> </postcode> [1] ?
</...>

The XML Instance Representation table above shows the schema component's content as an XML instance.

Schema Component Representation
<complexType name="AusAddress">
<complexContent>
<extension base=" Address ">
<sequence>
<element name="state" type=" AusStates "/>
<element name="postcode">
<simpleType>
<restriction base=" string ">
<pattern value="[1-9][0-9]{3}"/>
</restriction>
</simpleType>
</element>
</sequence>
<attribute name="country" type=" string " fixed="Australia"/>
</extension>
</complexContent>
</complexType>
The Schema Component Representation table above displays the underlying XML representation of the schema component. (Annotations are not shown.)
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Glossary

Abstract (Applies to complex type definitions and element declarations). An abstract element or complex type cannot used to validate an element instance. If there is a reference to an abstract element, only element declarations that can substitute the abstract element can be used to validate the instance. For references to abstract type definitions, only derived types can be used.

All Model Group Child elements can be provided in any order in instances. See: http://www.w3.org/TR/xmlschema-1/#element-all.

Choice Model Group Only one from the list of child elements and model groups can be provided in instances. See: http://www.w3.org/TR/xmlschema-1/#element-choice.

Collapse Whitespace Policy Replace tab, line feed, and carriage return characters with space character (Unicode character 32). Then, collapse contiguous sequences of space characters into single space character, and remove leading and trailing space characters.

Disallowed Substitutions (Applies to element declarations). If substitution is specified, then substitution group members cannot be used in place of the given element declaration to validate element instances. If derivation methods, e.g. extension, restriction, are specified, then the given element declaration will not validate element instances that have types derived from the element declaration's type using the specified derivation methods. Normally, element instances can override their declaration's type by specifying an xsi:type attribute.

Key Constraint Like Uniqueness Constraint, but additionally requires that the specified value(s) must be provided. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

Key Reference Constraint Ensures that the specified value(s) must match value(s) from a Key Constraint or Uniqueness Constraint. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

Model Group Groups together element content, specifying the order in which the element content can occur and the number of times the group of element content may be repeated. See: http://www.w3.org/TR/xmlschema-1/#Model_Groups.

Nillable (Applies to element declarations). If an element declaration is nillable, instances can use the xsi:nil attribute. The xsi:nil attribute is the boolean attribute, nil, from the http://www.w3.org/2001/XMLSchema-instance namespace. If an element instance has an xsi:nil attribute set to true, it can be left empty, even though its element declaration may have required content.

Notation A notation is used to identify the format of a piece of data. Values of elements and attributes that are of type, NOTATION, must come from the names of declared notations. See: http://www.w3.org/TR/xmlschema-1/#cNotation_Declarations.

Preserve Whitespace Policy Preserve whitespaces exactly as they appear in instances.

Prohibited Derivations (Applies to type definitions). Derivation methods that cannot be used to create sub-types from a given type definition.

Prohibited Substitutions (Applies to complex type definitions). Prevents sub-types that have been derived using the specified derivation methods from validating element instances in place of the given type definition.

Replace Whitespace Policy Replace tab, line feed, and carriage return characters with space character (Unicode character 32).

Sequence Model Group Child elements and model groups must be provided in the specified order in instances. See: http://www.w3.org/TR/xmlschema-1/#element-sequence.

Substitution Group Elements that are members of a substitution group can be used wherever the head element of the substitution group is referenced.

Substitution Group Exclusions (Applies to element declarations). Prohibits element declarations from nominating themselves as being able to substitute a given element declaration, if they have types that are derived from the original element's type using the specified derivation methods.

Target Namespace The target namespace identifies the namespace that components in this schema belongs to. If no target namespace is provided, then the schema components do not belong to any namespace.

Uniqueness Constraint Ensures uniqueness of an element/attribute value, or a combination of values, within a specified scope. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

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