XMLTemplate

XMLTemplate["string"]

yields a TemplateObject that represents an XML template to be applied using functions like TemplateApply.

XMLTemplate[src]

uses File[], URL[], or CloudObject[] as the source for the string template.

XMLTemplate[form,args]

yields a TemplateObject with arguments, suitable for cloud deployment or other evaluation.

Details and Options

  • The following basic tags can be used in the XML:
  • <wolfram:slot>TemplateSlot
    <wolfram:expr>TemplateExpression
    <wolfram:if>TemplateIf
    <wolfram:which>multiple TemplateIf
    <wolfram:sequence>TemplateSequence
    <wolfram:with>TemplateWith
    <wolfram:template>TemplateObject
    <wolfram:get>Get
    <wolfram:comment>comment to be ignored
    <wolfram:verbatim>verbatim XML
  • <wolfram:slot inserter=f> specifies the option setting InsertionFunction->f in TemplateSlot.
  • <wolfram:expr inserter=f> specifies the option setting InsertionFunction->f in TemplateExpression.
  • <wolfram:slot/> is equivalent to TemplateSlot[1].
  • <wolfram:if test=test>body</wolfram:if> specifies that body should be rendered if test evaluates to True.
  • <wolfram:which> ... </wolfram:which> can enclose any number of <wolfram:if ...> ... </wolfram:if>, and optionally a single <wolfram:else> ... </wolfram:else>. The "if" tests are evaluated in sequence, with the first one that evaluates to True being the final form of the "which".
  • <wolfram:sequence attr>body</wolfram:sequence> supports the following attributes:
  • values(required)list or association over which to repeat body
    slot1name of the template slot provided to body
    index2name of the position index provided to body
    delimitersSequence[]delimiters to insert between repeats of body
    defaultSequence[]form to use if there are no values
    inserterInheritedsetting for InsertionFunction option
  • <wolfram:with key1=val1 key2=val2 ...>body</wolfram:with> specifies that keyi should be replaced by vali in body when the template is applied.
  • <wolfram:template attr>body</wolfram:template> supports the following attributes, which define options for the TemplateObject to be used with body:
  • inserterInheritedsetting for InsertionFunction option
    combinerInheritedsetting for CombinerFunction option
  • <wolfram:get attr/> supports the following attributes:
  • path(required)file or URL path
    inserterInheritedsetting for InsertionFunction option
    combinerInheritedsetting for CombinerFunction option
  • XMLTemplate has the following options:
  • InsertionFunction"HTMLFragment"function or format to apply before inserting expressions
    CombinerFunctionStringJoinfunction to apply to combine pieces before returning a result
  • In XMLTemplate[File[]] and XMLTemplate[URL[]], the content of the source file etc. is imported as a string.

Examples

open allclose all

Basic Examples  (2)

Apply an XML template with slots named a and b:

An equivalent form using TemplateApply:

XMLTemplate supports the same syntax as StringTemplate; expressions in <**> are evaluated when the template is applied:

Include a template slot as well as an expression in the template string:

An equivalent syntax using XML tags:

String template syntax is useful when you need to inject data inside XML attributes:

Scope  (4)

File is fully supported:

Templates can be hosted in the Wolfram Cloud:

The second argument of XMLTemplate can be used to bound data to the template:

URL can be used to fetch templates:

Options  (2)

InsertionFunction  (1)

The inserter attribute can be a function or a string chosen between $ExportFormats:

The above code is equivalent to:

InsertionFunction can be anything:

CombinerFunction  (1)

The combiner function also accepts formats:

The combiner function can be anything:

Applications  (9)

<wolfram:slot id='...' inserter='...'>...</wolfram:slot>

Simple usage:

Working with default and inserter:

<wolfram:expr inserter='...'>...</wolfram:expr>

Simple usage:

Working with data and inserter:

<wolfram:if test='...'>...</wolfram:if>

Test can be any expression:

<wolfram:which><wolfram:if test='...'>...</wolfram:if></wolfram:which>

Use "which" to nest multiple "else if" clauses:

<wolfram:sequence values='...' ...>...</wolfram:sequence>

Basic usage:

Using named variables:

Using the insertion function:

Using the default value (a StringTemplate):

Using a delimiter:

<wolfram:with key$1='val$1' ...>...</wolfram:with>

<wolfram:get path='...'><wolfram:slot id='...'/>...</wolfram:get>

Include a template from "path". "Path" is a StringTemplate:

Change insertion and combiner functions for the output:

Extending a template. Example of a template for an HTML page:

Using "get" to override slots:

<wolfram:template ...>...</wolfram:template>

Use "template" to create a fragment that overrides the insertion and combiner functions:

Combine templates and edit an external template:

<wolfram:comment>...</wolfram:comment>

<wolfram:verbatim>...</wolfram:verbatim>

Use "verbatim" to avoid parsing. An optional insertion function is allowed:

Properties & Relations  (1)

XMLTemplate evaluates to a TemplateObject:

Possible Issues  (1)

Data in the second argument of XMLTemplate takes precedence over arguments in TemplateApply:

Neat Examples  (1)

You can deploy an XMLTemplate to the cloud. When you visit the URL, TemplateApply will render the template on each visit:

Introduced in 2014
 (10.0)