io.atlassian.util.adapter.javax.servlet.JavaXServletConfigAdapter 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;

import io.atlassian.util.adapter.jakarta.servlet.JakartaServletConfigAdapter;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;
import java.util.Enumeration;

import static io.atlassian.util.adapter.javax.JavaXAdapters.asJavaX;
import static io.atlassian.util.adapter.util.WrapperUtil.applyIfNonNull;
import static java.util.Objects.requireNonNull;

public class JavaXServletConfigAdapter implements ServletConfig {

    private final jakarta.servlet.ServletConfig delegate;

    public static ServletConfig from(jakarta.servlet.ServletConfig delegate) {
        if (delegate instanceof JakartaServletConfigAdapter castDelegate) {
            return castDelegate.getDelegate();
        }
        return applyIfNonNull(delegate, JavaXServletConfigAdapter::new);
    }

    JavaXServletConfigAdapter(jakarta.servlet.ServletConfig delegate) {
        this.delegate = requireNonNull(delegate);
    }

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

    @Override
    public String getServletName() {
        return delegate.getServletName();
    }

    @Override
    public ServletContext getServletContext() {
        return asJavaX(delegate.getServletContext());
    }

    @Override
    public String getInitParameter(String s) {
        return delegate.getInitParameter(s);
    }

    @Override
    public Enumeration getInitParameterNames() {
        return delegate.getInitParameterNames();
    }
}