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Difference between revisions of "JET FAQ How do I get new lines in the right place when using iterate with delimiter?"

(New page: The <c:iterate> tag includes a delimiter attribute, which inserts a delimiter between blocks of code generated. But, if you try something like: <pre> public enum MyEnum { <c:iterate selec...)
 
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The <c:iterate> tag includes a delimiter attribute, which inserts a delimiter between blocks of code generated. But, if you try something like:
+
== Problem ==
 +
The <c:iterate> tag includes a delimiter attribute which inserts a delimiter between blocks of code generated. But, if you try something like:
  
 
<pre>
 
<pre>
Line 28: Line 29:
 
</pre>
 
</pre>
  
JET is inserting the delimiter between each block generated by the iterate tag. But in this case, the tag's content includes a final new-line character - the delimiter is insert after this. One possibility is to make the new-line part of the delimiter itself:
+
== Solution ==
 +
JET is inserting the delimiter between each block generated by the iterate tag. But in this case, the tag's content includes a final new-line character - the delimiter is inserted after this. One possibility is to make the new-line part of the delimiter itself:
  
 
<pre>
 
<pre>

Revision as of 08:51, 22 June 2007

Problem

The <c:iterate> tag includes a delimiter attribute which inserts a delimiter between blocks of code generated. But, if you try something like:

public enum MyEnum {
<c:iterate select="/def/elements" var="element" delimiter=",">
    <c:get select="upper-case($element/@name)"/>("<c:get select="$element/@alias"/>")
</c:iterate>
;

    private MyEnum(String alias) {
        // ...
    }
}

You end up with generated code looking like:

public enum MyEnum {
    BANK("bank")
,    RECORD("record")
,    MESSENGER("messenger")
;
    private MyEnum(String alias) {
        // ...
    }
}

Solution

JET is inserting the delimiter between each block generated by the iterate tag. But in this case, the tag's content includes a final new-line character - the delimiter is inserted after this. One possibility is to make the new-line part of the delimiter itself:

public enum MyEnum {
<%-- The value of delimiter includes a new line. This not an accidental wrapping! --%>
<c:iterate select="/def/elements" var="element" delimiter=",
">
    <%-- and, the </c:iterate> tag is moved up, to eliminate the new line in content block --%>
    <%-- finally, the semi-colon is moved to onto the same line, too --%>
    <c:get select="upper-case($element/@name)"/>("<c:get select="$element/@alias"/>")</c:iterate>;

    private MyEnum(String alias) {
        // ...
    }
}

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