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https://issues.apache.org/jira/browse/JEXL-177?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14708317#comment-14708317
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Henri Biestro edited comment on JEXL-177 at 8/23/15 7:37 AM:
-------------------------------------------------------------
Yes, this is what I meant. A crude version could be:
{code}
public static class fn177 {
private final JexlContext context;
public fn177(JexlContext context) {
this.context = context;
}
public String print(String src) {
JxltEngine jxlt = (JxltEngine) context.get("$jxlt");
if (jxlt != null) {
JxltEngine.Template template = jxlt.createTemplate(src);
if (template != null) {
StringWriter strw = new StringWriter();
template.evaluate(context, strw);
return strw.toString();
}
}
return "";
}
}
@Test
public void test177() throws Exception {
Map<String, Object> funcs = new HashMap<String, Object>();
funcs.put("fn177", fn177.class);
JexlEngine jexl = new JexlBuilder().namespaces(funcs).create();
JxltEngine jxlt = jexl.createJxltEngine();
MapContext context = new MapContext();
context.set("$jxlt", jxlt);
String expr = "user = 'Dimitri'; fn177:print('Hello ${user}')";
Object value = jexl.createScript(expr).execute(context);
Assert.assertEquals(expr, "Hello Dimitri", value);
}
{code}
was (Author: henrib):
Yes, this is what I meant. A crude version could be:
{code}
public static class fn177 {
private final JexlContext context;
public fn177(JexlContext context) {
this.context = context;
}
public String print(String src) {
JxltEngine jxlt = (JxltEngine) context.get("$jxlt");
if (jxlt != null) {
JxltEngine.Template template = jxlt.createTemplate(src);
if (template != null) {
StringWriter strw = new StringWriter();
template.evaluate(context, strw);
return strw.toString();
}
}
return "";
}
}
@Test
public void test177() throws Exception {
Map<String, Object> funcs = new HashMap<String, Object>();
funcs.put("fn177", fn177.class);
JexlEngine jexl = new JexlBuilder().namespaces(funcs).create();
JxltEngine jxlt = jexl.createJxltEngine();
MapContext context = new MapContext();
context.set("$jxlt", jxlt);
String expr = "user = 'Dimitri'; fn177:print('Hello ${user}')";
Object value = jexl.createScript(expr).execute(context);
Assert.assertEquals(expr, "Hello Dimitri", value);
}
{code}
> Unified expressions to be used in String literals in Jexl scripts
> -----------------------------------------------------------------
>
> Key: JEXL-177
> URL: https://issues.apache.org/jira/browse/JEXL-177
> Project: Commons JEXL
> Issue Type: New Feature
> Affects Versions: 3.0
> Reporter: Dmitri Blinov
> Priority: Minor
>
> Introduce new string literals to jexl script that allow unified expressions
> to be used, string literals could use for example triple quoted (single or
> double) syntax for delimiters, may include newlines and should not escape
> single quotes
> {code}
> user = "Bob"; server = "Test"; s = """Hello ${user}, welcome to ${server}""";
> return s;
> {code}
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