AddText (XmlNode function): Difference between revisions
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{{Template:XmlNode:AddText subtitle}} | {{Template:XmlNode:AddText subtitle}} | ||
The <var>AddText</var> [[Notation_conventions_for_methods#Callable_methods|callable]] function adds a [[XmlDoc API#XmlDoc node types|Text node]] as the last child of the method <var>Element</var> node. | |||
==Syntax== | ==Syntax== | ||
{{Template:XmlNode:AddText syntax}} | {{Template:XmlNode:AddText syntax}} | ||
===Syntax terms=== | ===Syntax terms=== | ||
<table class="syntaxTable"> | <table class="syntaxTable"> | ||
<tr><th>%outNod</th> | <tr><th nowrap>%outNod</th> | ||
<td>If specified, an <var>XmlNode</var> that is set to point to the Text node that is added. </td></tr> | <td>If specified, an <var>XmlNode</var> that is set to point to the <var>Text</var> node that is added.</td></tr> | ||
<tr><th>nod</th> | <tr><th>nod</th> | ||
<td>An <var>XmlNode</var> that points to the Element node parent of the inserted Text node. </td></tr> | <td>An <var>XmlNode</var> that points to the <var>Element</var> node parent of the inserted <var>Text</var> node.</td></tr> | ||
<tr><th>value</th> | <tr><th>value</th> | ||
<td>The content of the Text node. This <var>Unicode</var> string value is stored without any normalization, entity substitution, etc. Prior to | <td>The content of the <var>Text</var> node. This <var>Unicode</var> string value is stored without any normalization, entity substitution, etc. Prior to <var class="product">[[Sirius Mods|Sirius Mods]]</var> Version 7.6, this is an EBCDIC string.</td></tr> | ||
</table> | </table> | ||
==Usage notes== | ==Usage notes== | ||
<ul> | <ul> | ||
<li>If <i>value</i> is the null string, a Text node is not inserted, | <li>If <i>value</i> is the null string, a <var>Text</var> node is not inserted, and <var class="term">%outNod</var> is set to <var>Null</var>. | ||
and < | <li>A <var>Text</var> node may not be added adjacent to (that is, as a sibling of) another <var>Text</var> node, unless the <var>[[AdjacentText (XmlDoc property)|AdjacentText]]</var> property setting is <code>Combine</code>. | ||
<li>A Text node may not be added adjacent to (that is, as a sibling of) | <li>As of <var class="product">Sirius Mods</var> Version 7.3, <var class="term">value</var> may include only non-null EBCDIC characters that translate to <var>Unicode</var>. As of <var class="product">Sirius Mods</var> Version 7.6, all <var class="product">[[Janus SOAP]]</var> string arguments and results are <var>Unicode</var> or are converted to <var>Unicode</var>. For more information about the effects of this Version 7.6 change, see [[XmlDoc API#Strings and Unicode with the XmlDoc API|"Strings and Unicode with the XmlDoc API"]]. | ||
another Text node, unless the [[AdjacentText (XmlDoc property)|AdjacentText]] property setting is < | <li>Since the return value of <var>AddText</var> is frequently not needed, you may want to <var>[[Notation_conventions_for_methods#Callable_methods|Call]]</var> it instead of saving its return value. | ||
<li>As of | <li>To modify the value stored in an <var>Text</var> node, change the <var>Value</var> property of an <var>XmlNode</var> that points to the <var>Text</var> node. | ||
include only non-null EBCDIC characters that translate to <var>Unicode</var>. | <li>Processing of an <var>XmlDoc</var> is likely to be more efficient if you add nodes in document order (that is, top-to-bottom, left-to-right). | ||
As of | |||
are <var>Unicode</var> or are converted to <var>Unicode</var>. | |||
For more information about the effects of this | |||
change, see [[Strings and Unicode]]. | |||
<li>Since the return value of <var>AddText</var> is frequently not needed, | |||
you may want to Call it instead of saving its return value. | |||
<li>To modify the value stored in an Text node, | |||
change the Value property of an <var>XmlNode</var> that points to | |||
the Text node. | |||
<li>Processing of an <var>XmlDoc</var> is likely to be more efficient if | |||
you add nodes in document | |||
order (that is, top-to-bottom, left-to-right). | |||
</ul> | </ul> | ||
=== | ==Examples== | ||
In the following example, a <var>Text</var> node is added as the last child (that is, located after element "b") of element "a": | |||
In the following example, a Text node is added as the last child | <p class="code">begin | ||
(that is, located after element "b") of element "a": | %doc is object xmlDoc | ||
<p class="code"> | %doc = new | ||
%doc is | %doc:[[LoadXml_(XmlDoc/XmlNode_function)|loadXml]]('<top><a><nowiki><b>05</b></nowiki></a></top>') | ||
%doc = | %n1 is object xmlNode | ||
%doc: | %n2 is object xmlNode | ||
%n1 is | %ls is longstring | ||
%n2 is | %ls ='In general, use Longstring %variables where'- | ||
%ls is longstring | with ' you might use String Len 255 %variables.' | ||
%ls ='In general, use Longstring %variables where'- | %n1 = %doc:[[SelectSingleNode_(XmlDoc/XmlNode_function)|selectSingleNode]]('top/a') | ||
%n2 = %n1:addText(%ls) | |||
%n1 = %doc: | %doc:print('top') | ||
%n2 = %n1: | end | ||
%doc: | |||
</p> | </p> | ||
The example result follows. | The example result follows. Note that this XML document structure (element "a" having "mixed content", both an <var>Element</var> and <var>Text</var> child) is common to <var>document</var> usage with XML. But it is unusual for <var>data</var> usage with XML (in fact, the SOAP standard disallows mixed content): | ||
Note that this XML document structure | <p class="output"><nowiki><top> | ||
(element "a" having "mixed content", | |||
both an Element and Text child) is common to | |||
usage with XML. | |||
But it is unusual for | |||
XML (in fact, the SOAP standard disallows mixed content): | |||
<p class=" | |||
<top> | |||
<a> | <a> | ||
<b>05</b> | |||
In general, use Longstring %variables where you might | In general, use Longstring %variables where you might | ||
use STRING LEN 255 %variables. | use STRING LEN 255 %variables. | ||
</a> | </a> | ||
</top> | </top></nowiki> | ||
</p> | </p> | ||
==Request-cancellation errors== | |||
This list is not exhaustive: it does <i>not</i> include all the errors that are request cancelling. | |||
<ul> | <ul> | ||
<li>< | <li>The <var class="term">nod</var> argument does not point to an <var>Element</var> node. | ||
<li>< | |||
child is a Text node, and the AdjacentText property | <li><var class="term">nod</var> points to an <var>Element</var> node whose last child is a <var>Text</var> node, and the <var>[[AdjacentText_(XmlDoc_property)|AdjacentText]]</var> property setting is <code>Disallow</code>. | ||
setting is < | |||
<li>< | <li>The <var class="term">value</var> argument violates the rules for XML <var>Element</var> content (that is, it contains an invalid character). Note that as of <var class="product">Sirius Mods</var> Version 7.6, this check can no longer be bypassed using the <var>[[InvalidChar (XmlDoc property)|InvalidChar]]</var> property. | ||
XML Element content | |||
(that is, it contains an invalid character). | |||
Note that as of | |||
<li>Insufficient free space exists in CCATEMP. | <li>Insufficient free space exists in CCATEMP. | ||
</ul> | </ul> | ||
==See also== | ==See also== | ||
<ul> | <ul> | ||
<li>[[InsertTextBefore (XmlNode function)|InsertTextBefore]] also adds a Text node. | <li><var>[[InsertTextBefore (XmlNode function)|InsertTextBefore]]</var> also adds a <var>Text</var> node. <var>AddText</var> adds a <var>Text</var> as the last child of the node pointed to by the method object; <var>InsertTextBefore</var> adds a <var>Text</var> node as the immediately preceding sibling of the node pointed to by the method object. | ||
<var>AddText</var> adds a Text as the last child of the node pointed to by the | |||
method object; | |||
InsertTextBefore adds a Text as the immediately preceding | |||
sibling of the node pointed to by the method object. | |||
</ul> | </ul> | ||
{{Template:XmlNode:AddText footer}} |
Latest revision as of 23:21, 1 September 2015
Add Text child to Element node (XmlNode class)
[Requires Janus SOAP]
The AddText callable function adds a Text node as the last child of the method Element node.
Syntax
[%outNod =] nod:AddText( value)
Syntax terms
%outNod | If specified, an XmlNode that is set to point to the Text node that is added. |
---|---|
nod | An XmlNode that points to the Element node parent of the inserted Text node. |
value | The content of the Text node. This Unicode string value is stored without any normalization, entity substitution, etc. Prior to Sirius Mods Version 7.6, this is an EBCDIC string. |
Usage notes
- If value is the null string, a Text node is not inserted, and %outNod is set to Null.
- A Text node may not be added adjacent to (that is, as a sibling of) another Text node, unless the AdjacentText property setting is
Combine
. - As of Sirius Mods Version 7.3, value may include only non-null EBCDIC characters that translate to Unicode. As of Sirius Mods Version 7.6, all Janus SOAP string arguments and results are Unicode or are converted to Unicode. For more information about the effects of this Version 7.6 change, see "Strings and Unicode with the XmlDoc API".
- Since the return value of AddText is frequently not needed, you may want to Call it instead of saving its return value.
- To modify the value stored in an Text node, change the Value property of an XmlNode that points to the Text node.
- Processing of an XmlDoc is likely to be more efficient if you add nodes in document order (that is, top-to-bottom, left-to-right).
Examples
In the following example, a Text node is added as the last child (that is, located after element "b") of element "a":
begin %doc is object xmlDoc %doc = new %doc:loadXml('<top><a><b>05</b></a></top>') %n1 is object xmlNode %n2 is object xmlNode %ls is longstring %ls ='In general, use Longstring %variables where'- with ' you might use String Len 255 %variables.' %n1 = %doc:selectSingleNode('top/a') %n2 = %n1:addText(%ls) %doc:print('top') end
The example result follows. Note that this XML document structure (element "a" having "mixed content", both an Element and Text child) is common to document usage with XML. But it is unusual for data usage with XML (in fact, the SOAP standard disallows mixed content):
<top> <a> <b>05</b> In general, use Longstring %variables where you might use STRING LEN 255 %variables. </a> </top>
Request-cancellation errors
This list is not exhaustive: it does not include all the errors that are request cancelling.
- The nod argument does not point to an Element node.
- nod points to an Element node whose last child is a Text node, and the AdjacentText property setting is
Disallow
. - The value argument violates the rules for XML Element content (that is, it contains an invalid character). Note that as of Sirius Mods Version 7.6, this check can no longer be bypassed using the InvalidChar property.
- Insufficient free space exists in CCATEMP.
See also
- InsertTextBefore also adds a Text node. AddText adds a Text as the last child of the node pointed to by the method object; InsertTextBefore adds a Text node as the immediately preceding sibling of the node pointed to by the method object.