❮ XSLT Function Reference Definition and UsageThe key() function returns a node-set from the document, using the index specified by an <xsl:key> element.Syntaxnode-set key(string, object) ParametersParameterDescription string Required. Specifies the name of an xsl:key element object Required....
The key() function retrieves a node set (zero or more nodes) that have the same key name and key value specified in the <xsl:key> statement. When the XSLT style sheet is first processed, the keys are stored internally to simplify access. Keys can simplify accessing nodes in the XML ...
Elements previously marked with xsl:key which match the name and value specified in the arguments. Remarks The key() function retrieves a node set (zero or more nodes) that have the same key name and key value specified in the <xsl:key> statement. When the XSL Transformations (XSLT) styl...
Complete XSLT Element Reference Definition and UsageThe <xsl:key> element is a top-level element which declares a named key that can be used in the style sheet with the key() function.Note: A key does not have to be unique!Syntax<xsl:key name="name" match="pattern" use="expression"/...
Generating Links with the key() Function (XSLT)Doug Tidwell
While the XSLT parser compiles the search expressions for the key element ahead of time, the current implementation does not explicitly create the index unless akeyfunction is encountered. This guarantees that if a transformation bypasses thekeyfunction call then the initial time-intensive indexing is...
However, when <xsl:key> elements are compiled, the XSLT processor will not create such indexes unless a key() function is called against the keys. This ensures that the time-intensive indexing operation is performed only when it is necessary....
This function is called after everything else has been recomposed, and allows the template to set remaining values that may be based on some other property that depends on recomposition. XPathgetMatch() Get the "match" attribute. QNamegetName()...
CREATE OR REPLACE FUNCTION my_function(_rowtype anyelement, q text, payload jsonb) RETURNS SETOF anyelement LANGUAGE plpgsql AS$func$BEGIN RETURN QUERY EXECUTE q; IF NOT FOUND THEN RETURN; -- nothing happened yet, we can exit silently. -- Or you WANT an error for this case. Then do ...
function prepare()会在全局command为perpare时调用,function cleanup()会在全局command为cleanup时调用,而function set_vars()会被引用至自己本身以及其他lua脚本中。 接下来我们来看oltp.lua脚本。 pathtest = string.match(test, "(.*/)") or "" -- 引入common.lua脚本 dofile(pathtest .. "common.lua"...