XMLUpdater

Input features contain the XML documents to be modified. The documents can be contained in an attribute, entered directly into the transformer, or contained in a file referenced by an attribute value.

对于进入此输入端口的每个功能，变压器中列出的每个更新都将在通过该文件输入的每个文档上执行Document输入端口。这些功能将包含文档更新中使用的属性值。

这Document输入功能将通过此端口输出。这些功能将包含更新的文档，该文档将存储在结果属性参数中名为的属性中。

This parameter is used to specify which update features will modify a document. When this parameter is set to a list of attributes,Documentfeatures will only be modified byUpdate为这些属性共享相同值的功能。该文档将由具有相同属性值的所有更新功能进行修改。请注意，如果否，则不会更新文档Update为变压器提供具有相同“组”属性的相同值的功能。

This parameter is used to specify the type of XML document which is to be modified. The XML may come from the input features (Parameter Value: Text or Attribute), or it may come from an external file. (Parameter Value: XML File)

当XML Input参数设置为Text或属性时，此参数用于指定XML文件。参数可以设置为属性值，或者可以直接输入XML文档。

When the XML Input parameter is set to XML File, this parameter is used to specify the location of the file. The file path may be entered directly into the parameter, or the path may come from an attribute value.

This parameter specifies the type of modification to apply to the XML document. The possible updates are:

此参数指定要更新的XML节点的位置。这里可以使用任何XQuery表达式，只要它返回输入文档中包含的节点即可。如果路径表达式评估为多个项目，则它们都将被修改。

这simplest parameter value is a path expression, for example:

/data/record/name

With this path expression, the transformer will modify every element which is contained in a element which is contained in a root element. A predicate may be used to narrow down this selection. For example, to modify the element in the first only, the following path could be used:

/数据/记录[1] /名称

Similarly, a predicate may also be used to narrow the selection based on an attribute value:

/data/record[@id = "A-123"]/name

值得注意的是，由于这是XQuery表达式，因此可以使用FME XQuery函数。

Note:这XQuery functions used in the Path parameter will apply to theUpdatefeature being processed, not theDocument正在更新的功能

/数据/记录[@ id = fme：get-attribute（“record_id”）/ name。

变换器将仅修改其中包含的元素中包含的名称>元素，其ID属性等于Record_ID Feature属性。这也适用于列表属性。以下路径表达式将修改包含ID属性包含在_IDS功能属性中的元素中包含的所有元素中的所有元素。

/data/record[@id=fme:get-list-attribute("_ids{}")]/name

路径expression must be namespace correct. That is, the prefixes (or lack of prefixes) must match exactly the prefixes used in the input XML document. A wildcard (*) may be used as a namespace prefix. The path/*：数据将匹配A.任何名称空间中的元素，包括默认命名空间和空名称空间。类似地，通配符可以用于元素名称。路径GML：*将与GML前缀绑定的命名空间中的任何元素匹配。结合这些方法，*：*可以不使用语法。相反，应该使用单个*字符。

This parameter is used to indicate how the value of the Value parameter should be interpreted. The effects of the different values of this parameter are explained in the description of the Value parameter. In general, this parameter should be set to Plain Text if the transformer is intended to insert text content into the document, while it should be set to XML/XQuery if the transformer is intended to insert XML elements into the document.

This parameter is used to specify the new values that should be inserted into the document. If the Value Type parameter is set to Plain Text, the contents of this parameter will be encoded for safe use in an XML document. That is, < characters will be encoded as <, > characters will be encoded as > and so on.

If the Value Type parameter is set to XML/XQuery, the contents of this parameter will be interpreted as an XQuery expression. This allows the insertion of XML elements into the document. Also, this allows the use of the FME XQuery functions. For example, an XML Template (for example, from thexmltemplater.可以输入变换器作为参数值。然后将在插入文档之前进行评估。

Note:Any FME XQuery functions used in the new value will access theUpdate特征，不是Documentfeature.

该参数指定是否工作台should try to validate the attribute names which are passed to any XQuery functions used in the XML Path column and the Value column.

This parameter specifies the attribute to which the updated XML document will be written. The default is_结果。

此参数指定更新的XML文档是否应以XML标题声明开头。默认情况下，输出将包含XML标题。当输出将与其他值连接到较大的XML文档时，省略标题可能很有用。