in src/main/java/org/apache/sling/scripting/jsp/jasper/compiler/Generator.java [1098:1187]
public void visit(Node.SetProperty n) throws JasperException {
String name = n.getTextAttribute("name");
String property = n.getTextAttribute("property");
String param = n.getTextAttribute("param");
Node.JspAttribute value = n.getValue();
n.setBeginJavaLine(out.getJavaLine());
if ("*".equals(property)) {
out
.printil("org.apache.sling.scripting.jsp.jasper.runtime.JspRuntimeLibrary.introspect("
+ "_jspx_page_context.findAttribute("
+ "\""
+ name + "\"), request);");
} else if (value == null) {
if (param == null) {
param = property; // default to same as property
}
out
.printil("org.apache.sling.scripting.jsp.jasper.runtime.JspRuntimeLibrary.introspecthelper("
+ "_jspx_page_context.findAttribute(\""
+ name
+ "\"), \""
+ property
+ "\", request.getParameter(\""
+ param
+ "\"), "
+ "request, \""
+ param
+ "\", false);");
} else if (value.isExpression()) {
out
.printil("org.apache.sling.scripting.jsp.jasper.runtime.JspRuntimeLibrary.handleSetProperty("
+ "_jspx_page_context.findAttribute(\""
+ name
+ "\"), \"" + property + "\",");
out.print(attributeValue(value, false, null));
out.println(");");
} else if (value.isELInterpreterInput()) {
// We've got to resolve the very call to the interpreter
// at runtime since we don't know what type to expect
// in the general case; we thus can't hard-wire the call
// into the generated code. (XXX We could, however,
// optimize the case where the bean is exposed with
// <jsp:useBean>, much as the code here does for
// getProperty.)
// The following holds true for the arguments passed to
// JspRuntimeLibrary.handleSetPropertyExpression():
// - 'pageContext' is a VariableResolver.
// - 'this' (either the generated Servlet or the generated tag
// handler for Tag files) is a FunctionMapper.
out
.printil("org.apache.sling.scripting.jsp.jasper.runtime.JspRuntimeLibrary.handleSetPropertyExpression("
+ "_jspx_page_context.findAttribute(\""
+ name
+ "\"), \""
+ property
+ "\", "
+ quote(value.getValue())
+ ", "
+ "_jspx_page_context, "
+ value.getEL().getMapName() + ");");
} else if (value.isNamedAttribute()) {
// If the value for setProperty was specified via
// jsp:attribute, first generate code to evaluate
// that body.
String valueVarName = generateNamedAttributeValue(value
.getNamedAttributeNode());
out
.printil("org.apache.sling.scripting.jsp.jasper.runtime.JspRuntimeLibrary.introspecthelper("
+ "_jspx_page_context.findAttribute(\""
+ name
+ "\"), \""
+ property
+ "\", "
+ valueVarName
+ ", null, null, false);");
} else {
out
.printin("org.apache.sling.scripting.jsp.jasper.runtime.JspRuntimeLibrary.introspecthelper("
+ "_jspx_page_context.findAttribute(\""
+ name
+ "\"), \"" + property + "\", ");
out.print(attributeValue(value, false, null));
out.println(", null, null, false);");
}
n.setEndJavaLine(out.getJavaLine());
}