io.atlassian.util.adapter.javax.servlet.jsp.JavaXJspFactoryAdapter Maven / Gradle / Ivy

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A collection of classes for adapting Servlet API 4.0 objects to Servlet API 5.0 and vice versa.

There is a newer version: 0.1.0

package io.atlassian.util.adapter.javax.servlet.jsp;

import io.atlassian.util.adapter.jakarta.servlet.jsp.JakartaJspFactoryAdapter;
import io.atlassian.util.adapter.jakarta.servlet.jsp.JakartaPageContextAdapter;

import javax.servlet.Servlet;
import javax.servlet.ServletContext;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.jsp.JspApplicationContext;
import javax.servlet.jsp.JspEngineInfo;
import javax.servlet.jsp.JspFactory;
import javax.servlet.jsp.PageContext;

import static io.atlassian.util.adapter.jakarta.JakartaAdapters.asJakarta;
import static io.atlassian.util.adapter.util.WrapperUtil.applyIfNonNull;
import static java.util.Objects.requireNonNull;

public class JavaXJspFactoryAdapter extends JspFactory {
    private final jakarta.servlet.jsp.JspFactory delegate;

    public static JspFactory from(jakarta.servlet.jsp.JspFactory delegate) {
        if (delegate instanceof JakartaJspFactoryAdapter castDelegate) {
            return castDelegate.getDelegate();
        }
        return applyIfNonNull(delegate, JavaXJspFactoryAdapter::new);
    }

    JavaXJspFactoryAdapter(jakarta.servlet.jsp.JspFactory delegate) {
        this.delegate = requireNonNull(delegate);
    }

    public jakarta.servlet.jsp.JspFactory getDelegate() {
        return delegate;
    }

    @Override
    public PageContext getPageContext(Servlet servlet,
                                      ServletRequest servletRequest,
                                      ServletResponse servletResponse,
                                      String s,
                                      boolean b,
                                      int i,
                                      boolean b1) {
        return JavaXPageContextAdapter.from(
                delegate.getPageContext(asJakarta(servlet), asJakarta(servletRequest), asJakarta(servletResponse), s, b, i, b1));
    }

    @Override
    public void releasePageContext(PageContext pageContext) {
        delegate.releasePageContext(JakartaPageContextAdapter.from(pageContext));
    }

    @Override
    public JspEngineInfo getEngineInfo() {
        return JavaXJspEngineInfoAdapter.from(delegate.getEngineInfo());
    }

    @Override
    public JspApplicationContext getJspApplicationContext(ServletContext servletContext) {
        return JavaXJspApplicationContextAdapter.from(delegate.getJspApplicationContext(asJakarta(servletContext)));
    }
}