org.opencms.jsp.util
Class CmsJspContentAccessBean

java.lang.Object
  org.opencms.jsp.util.CmsJspContentAccessBean

public class CmsJspContentAccessBean
extends java.lang.Object

Allows access to the individual elements of an XML content, usually used inside a loop of a <cms:contentload> tag.

The implementation is optimized for performance and uses lazy initializing of the requested values as much as possible.

Since:

7.0.2

Version:

$Revision: 1.10 $

Author:

Alexander Kandzior

See Also:

CmsJspTagContentAccess

Nested Class Summary

class	CmsJspContentAccessBean.CmsHasLocaleTransformer Provides Booleans that indicate if a specified locale is available in the XML content, the input is assumed to be a String that represents a Locale.
class	CmsJspContentAccessBean.CmsHasLocaleValueTransformer Provides Booleans that indicate if a specified path exists in the XML content, the input is assumed to be a String that represents an xpath in the XML content.
class	CmsJspContentAccessBean.CmsHasValueTransformer Provides a Map with Booleans that indicate if a specified path exists in the XML content in the selected Locale, the input is assumed to be a String that represents an xpath in the XML content.
class	CmsJspContentAccessBean.CmsLocaleNamesTransformer Provides a Map which lets the user access the list of element names from the selected locale in an XML content, the input is assumed to be a String that represents a Locale.
class	CmsJspContentAccessBean.CmsLocaleValueListTransformer Provides a Map which lets the user access value Lists from the selected locale in an XML content, the input is assumed to be a String that represents a Locale.
class	CmsJspContentAccessBean.CmsLocaleValueTransformer Provides a Map which lets the user access a value from the selected locale in an XML content, the input is assumed to be a String that represents a Locale.
class	CmsJspContentAccessBean.CmsValueListTransformer Provides a Map which lets the user access value Lists in an XML content, the input is assumed to be a String that represents an xpath in the XML content.
class	CmsJspContentAccessBean.CmsValueTransformer Provides a Map which lets the user access a value in an XML content, the input is assumed to be a String that represents an xpath in the XML content.

Field Summary

protected static java.util.Map

CONSTANT_NULL_VALUE_WRAPPER_MAP Constant Map that always returns the CmsJspContentAccessValueWrapper.NULL_VALUE_WRAPPER.

Constructor Summary

CmsJspContentAccessBean()
No argument constructor, required for a JavaBean.

CmsJspContentAccessBean(CmsObject cms, CmsResource resource)
Creates a content access bean based on a Resource, using the current request context locale.

CmsJspContentAccessBean(CmsObject cms, java.util.Locale locale, CmsResource resource)
Creates a content access bean based on a Resource.

CmsJspContentAccessBean(CmsObject cms, java.util.Locale locale, I_CmsXmlDocument content)
Creates a content access bean based on an XML content object.

Method Summary

CmsObject	getCmsObject() Returns the OpenCms user context this bean was initialized with.
CmsFile	getFile() Returns the raw VFS file object the content accessed by this bean was created from.
java.lang.String	getFilename() Returns the site path of the current resource, that is the result of CmsObject.getSitePath(CmsResource) with the resource obtained by getFile().
java.util.Map	getHasLocale() Returns a lazy initialized Map that provides Booleans that indicate if a specified Locale is available in the XML content.
java.util.Map	getHasLocaleValue() Returns a lazy initialized Map that provides a Map that provides Booleans that indicate if a value (xpath) is available in the XML content in the selected locale.
java.util.Map	getHasValue() Returns a lazy initialized Map that provides Booleans that indicate if a value (xpath) is available in the XML content in the current locale.
java.util.Locale	getLocale() Returns the Locale this bean was initialized with.
java.util.Map	getLocaleNames() Returns a lazy initialized Map that provides a List with all available elements paths (Strings) used in this document in the selected locale.
java.util.Map	getLocaleValue() Returns a lazy initialized Map that provides a Map that provides values from the XML content in the selected locale.
java.util.Map	getLocaleValueList() Returns a lazy initialized Map that provides a Map that provides Lists of values from the XML content in the selected locale.
java.util.List	getNames() Returns a list with all available elements paths (Strings) used in this document in the current locale.
I_CmsXmlDocument	getRawContent() Returns the raw XML content object that is accessed by this bean.
java.util.Map	getValue() Returns a lazy initialized Map that provides values from the XML content in the current locale.
java.util.Map	getValueList() Returns a lazy initialized Map that provides Lists of values from the XML content in the current locale.
CmsJspVfsAccessBean	getVfs() Returns an instance of a VFS access bean, initialized with the OpenCms user context this bean was created with.
void	init(CmsObject cms, java.util.Locale locale, I_CmsXmlDocument content, CmsResource resource) Initialize this instance.

Methods inherited from class java.lang.Object

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

Field Detail

CONSTANT_NULL_VALUE_WRAPPER_MAP

protected static final java.util.Map CONSTANT_NULL_VALUE_WRAPPER_MAP

Constant Map that always returns the CmsJspContentAccessValueWrapper.NULL_VALUE_WRAPPER.

Constructor Detail

CmsJspContentAccessBean

public CmsJspContentAccessBean()

No argument constructor, required for a JavaBean.

You must call init(CmsObject, Locale, I_CmsXmlDocument, CmsResource) and provide the required values when you use this constructor.

See Also:

init(CmsObject, Locale, I_CmsXmlDocument, CmsResource)

CmsJspContentAccessBean

public CmsJspContentAccessBean(CmsObject cms,
                               CmsResource resource)

Creates a content access bean based on a Resource, using the current request context locale.

Parameters:

cms - the OpenCms context of the current user

resource - the resource to create the content from

CmsJspContentAccessBean

public CmsJspContentAccessBean(CmsObject cms,
                               java.util.Locale locale,
                               CmsResource resource)

Creates a content access bean based on a Resource.

Parameters:

cms - the OpenCms context of the current user

locale - the Locale to use when accessing the content

resource - the resource to create the content from

CmsJspContentAccessBean

public CmsJspContentAccessBean(CmsObject cms,
                               java.util.Locale locale,
                               I_CmsXmlDocument content)

Creates a content access bean based on an XML content object.

Parameters:

cms - the OpenCms context of the current user

locale - the Locale to use when accessing the content

content - the content to access

Method Detail

getCmsObject

public CmsObject getCmsObject()

Returns the OpenCms user context this bean was initialized with.

Returns:

the OpenCms user context this bean was initialized with

getFile

public CmsFile getFile()

Returns the raw VFS file object the content accessed by this bean was created from.

This can be used to access information from the raw file on a JSP.

Usage example on a JSP with the JSTL:

 <cms:contentload ... >
     <cms:contentaccess var="content" />
     Root path of the resource: ${content.file.rootPath}
 </cms:contentload>

Returns:

the raw VFS file object the content accessed by this bean was created from

getFilename

public java.lang.String getFilename()

Returns the site path of the current resource, that is the result of CmsObject.getSitePath(CmsResource) with the resource obtained by getFile().

Usage example on a JSP with the JSTL:

 <cms:contentload ... >
     <cms:contentaccess var="content" />
     Site path of the resource: "${content.filename}";
 </cms:contentload>

Returns:

the site path of the current resource

See Also:

CmsObject.getSitePath(CmsResource)

getHasLocale

public java.util.Map getHasLocale()

Returns a lazy initialized Map that provides Booleans that indicate if a specified Locale is available in the XML content.

The provided Map key is assumed to be a String that represents a Locale.

Usage example on a JSP with the JSTL:

 <cms:contentload ... >
     <cms:contentaccess var="content" />
     <c:if test="${content.hasLocale['de']}" >
         The content has a "de" Locale! 
     </c:if>
 </cms:contentload>

Returns:

a lazy initialized Map that provides Booleans that indicate if a specified Locale is available in the XML content

getHasLocaleValue

public java.util.Map getHasLocaleValue()

Returns a lazy initialized Map that provides a Map that provides Booleans that indicate if a value (xpath) is available in the XML content in the selected locale.

The first provided Map key is assumed to be a String that represents the Locale, the second provided Map key is assumed to be a String that represents the xpath to the value.

Usage example on a JSP with the JSTL:

 <cms:contentload ... >
     <cms:contentaccess var="content" />
     <c:if test="${content.hasLocaleValue['de']['Title']}" >
         The content has a "Title" value in the "de" Locale! 
     </c:if>
 </cms:contentload>

Please note that you can also test if a locale value exists like this:

 <c:if test="${content.value['de']['Title'].exists}" > ... </c:if>

Returns:

a lazy initialized Map that provides a Map that provides Booleans that indicate if a value (xpath) is available in the XML content in the selected locale

See Also:

getHasValue()

getHasValue

public java.util.Map getHasValue()

Returns a lazy initialized Map that provides Booleans that indicate if a value (xpath) is available in the XML content in the current locale.

The provided Map key is assumed to be a String that represents the xpath to the value.

Usage example on a JSP with the JSTL:

 <cms:contentload ... >
     <cms:contentaccess var="content" />
     <c:if test="${content.hasValue['Title']}" >
         The content has a "Title" value in the current locale! 
     </c:if>
 </cms:contentload>

Please note that you can also test if a value exists like this:

 <c:if test="${content.value['Title'].exists}" > ... </c:if>

Returns:

a lazy initialized Map that provides Booleans that indicate if a value (xpath) is available in the XML content in the current locale

See Also:

getHasLocaleValue()

getLocale

public java.util.Locale getLocale()

Returns the Locale this bean was initialized with.

Returns:

the locale this bean was initialized with

getLocaleNames

public java.util.Map getLocaleNames()

Returns a lazy initialized Map that provides a List with all available elements paths (Strings) used in this document in the selected locale.

The provided Map key is assumed to be a String that represents the Locale.

Usage example on a JSP with the JSTL:

 <cms:contentload ... >
     <cms:contentaccess var="content" />
     <c:forEach items="${content.localeNames['de']}" var="elem">
         <c:out value="${elem}" />
     </c:forEach>  
 </cms:contentload>

Returns:

a lazy initialized Map that provides a Map that provides values from the XML content in the selected locale

See Also:

getNames()

getLocaleValue

public java.util.Map getLocaleValue()

Returns a lazy initialized Map that provides a Map that provides values from the XML content in the selected locale.

The first provided Map key is assumed to be a String that represents the Locale, the second provided Map key is assumed to be a String that represents the xpath to the value.

Usage example on a JSP with the JSTL:

 <cms:contentload ... >
     <cms:contentaccess var="content" />
     The Title in Locale "de": ${content.localeValue['de']['Title']}
 </cms:contentload>

Returns:

a lazy initialized Map that provides a Map that provides values from the XML content in the selected locale

See Also:

getValue()

getLocaleValueList

public java.util.Map getLocaleValueList()

Returns a lazy initialized Map that provides a Map that provides Lists of values from the XML content in the selected locale.

The first provided Map key is assumed to be a String that represents the Locale, the second provided Map key is assumed to be a String that represents the xpath to the value.

Usage example on a JSP with the JSTL:

 <cms:contentload ... >
     <cms:contentaccess var="content" />
     <c:forEach var="teaser" items="${content.localeValueList['de']['Teaser']}">
         ${teaser}
     </c:forEach>
 </cms:contentload>

Returns:

a lazy initialized Map that provides a Map that provides Lists of values from the XML content in the selected locale

See Also:

getLocaleValue()

getNames

public java.util.List getNames()

Returns a list with all available elements paths (Strings) used in this document in the current locale.

Usage example on a JSP with the JSTL:

 <cms:contentload ... >
     <cms:contentaccess var="content" />
     <c:forEach items="${content.names}" var="elem">
         <c:out value="${elem}" />
     </c:forEach>
 </cms:contentload>

Returns:

a list with all available elements paths (Strings) used in this document in the current locale

See Also:

getLocaleNames()

getRawContent

public I_CmsXmlDocument getRawContent()

Returns the raw XML content object that is accessed by this bean.

Returns:

the raw XML content object that is accessed by this bean

getValue

public java.util.Map getValue()

Returns a lazy initialized Map that provides values from the XML content in the current locale.

The provided Map key is assumed to be a String that represents the xpath to the value.

Usage example on a JSP with the JSTL:

 <cms:contentload ... >
     <cms:contentaccess var="content" />
     The Title: ${content.value['Title']}
 </cms:contentload>

Returns:

a lazy initialized Map that provides values from the XML content in the current locale

See Also:

getLocaleValue()

getValueList

public java.util.Map getValueList()

Returns a lazy initialized Map that provides Lists of values from the XML content in the current locale.

The provided Map key is assumed to be a String that represents the xpath to the value. Use this method in case you want to iterate over a List of values form the XML content.

Usage example on a JSP with the JSTL:

 <cms:contentload ... >
     <cms:contentaccess var="content" />
     <c:forEach var="teaser" items="${content.valueList['Teaser']}">
         ${teaser}
     </c:forEach>
 </cms:contentload>

Returns:

a lazy initialized Map that provides Lists of values from the XML content in the current locale

See Also:

getLocaleValueList()

getVfs

public CmsJspVfsAccessBean getVfs()

Returns an instance of a VFS access bean, initialized with the OpenCms user context this bean was created with.

Returns:

an instance of a VFS access bean, initialized with the OpenCms user context this bean was created with

init

public void init(CmsObject cms,
                 java.util.Locale locale,
                 I_CmsXmlDocument content,
                 CmsResource resource)

Initialize this instance.

Parameters:

cms - the OpenCms context of the current user

locale - the Locale to use when accessing the content

content - the XML content to access

resource - the resource to create the content from