Uisng less than (<) and greater than (>) signs in an XML configuration : SystemWeaver

B

Bashar Nassar

创建话题将近2年以前

I am getting an error "The character '<' cannot be used in an attribute value" when I use the "<" operator.

最佳答案

S

SystemWeaver Support 说超过1年以前

In the SystemWeaver Path Language, one can do an expression similar to below, using less than (<), greater than (>), etc.:

However, when adding the same expression to an XML configuration, we get an error:

The reason is because some characters are reserved in XML/HTML, e.g., less than (<) and greater than (>) signs. So when using these reserved signs in an XML configuration, e.g., report, graph, chart, etc., you need to replace them with HTML character entities. Below is a table with three commonly used signs. Find more HTML character entities here https://oinam.github.io/entities/

So, replacing (<) with (<) in the script will resolve the error.

<Report>
<Text>#{? value:=3; value < 2}</Text>
</Report>

Stacey Hwasser

说将近2年以前

Thanks for sharing Bashar!

SystemWeaver Support

说超过1年以前

回答

In the SystemWeaver Path Language, one can do an expression similar to below, using less than (<), greater than (>), etc.:

However, when adding the same expression to an XML configuration, we get an error:

The reason is because some characters are reserved in XML/HTML, e.g., less than (<) and greater than (>) signs. So when using these reserved signs in an XML configuration, e.g., report, graph, chart, etc., you need to replace them with HTML character entities. Below is a table with three commonly used signs. Find more HTML character entities here https://oinam.github.io/entities/

So, replacing (<) with (<) in the script will resolve the error.

<Report>
<Text>#{? value:=3; value < 2}</Text>
</Report>

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