Method generateInit

java/org/apache/jasper/compiler/Generator.java:461–495

Generates the _jspInit() method for instantiating the tag handler pools. For tag file, _jspInit has to be invoked manually, and the ServletConfig object explicitly passed. In JSP 2.1, we also instantiate an ExpressionFactory

()

     * In JSP 2.1, we also instantiate an ExpressionFactory
     */
    private void generateInit() {

        if (ctxt.isTagFile()) {
            out.printil("private void _jspInit(jakarta.servlet.ServletConfig config) {");
        } else {
            out.printil("public void _jspInit() {");
        }

        out.pushIndent();
        if (isPoolingEnabled) {
            for (String tagHandlerPoolName : tagHandlerPoolNames) {
                out.printin(tagHandlerPoolName);
                out.print(" = org.apache.jasper.runtime.TagHandlerPool.getTagHandlerPool(");
                if (ctxt.isTagFile()) {
                    out.print("config");
                } else {
                    out.print("getServletConfig()");
                }
                out.println(");");
            }
        }

        // Tag files can't (easily) use lazy init for these so initialise them
        // here.
        if (ctxt.isTagFile()) {
            out.printin(ctxt.getOptions().getVariableForExpressionFactory());
            out.println(" = _jspxFactory.getJspApplicationContext(config.getServletContext()).getExpressionFactory();");
            out.printin(ctxt.getOptions().getVariableForInstanceManager());
            out.println(" = org.apache.jasper.runtime.InstanceManagerFactory.getInstanceManager(config);");
        }

        out.popIndent();
        out.printil("}");
        out.println();
    }

    /**
     * Generates the _jspDestroy() method which is responsible for calling the release() method on every tag handler in