package org.jboss.resteasy.core;
import org.jboss.resteasy.spi.HttpRequest;
import org.jboss.resteasy.spi.HttpResponse;
import org.jboss.resteasy.spi.ResteasyProviderFactory;
import org.jboss.resteasy.util.PrefixedFormFieldsHttpRequest;
import javax.ws.rs.core.MultivaluedMap;
import java.util.List;
/**
* Extension of {@link FormInjector} that handles prefixes for associated classes.
*/
public class PrefixedFormInjector extends FormInjector
{
private final String prefix;
/**
* Constructor setting the prefix.
*/
public PrefixedFormInjector(Class type, String prefix, ResteasyProviderFactory factory)
{
super(type, factory);
this.prefix = prefix;
}
/**
* {@inheritDoc} Wraps the request in a
*/
@Override
public Object inject(HttpRequest request, HttpResponse response)
{
if (!containsPrefixedFormFieldsWithValue(request.getDecodedFormParameters()))
{
return null;
}
return doInject(prefix, request, response);
}
/**
* Calls the super {@link #inject(org.jboss.resteasy.spi.HttpRequest, org.jboss.resteasy.spi.HttpResponse)} method.
*/
protected Object doInject(String prefix, HttpRequest request, HttpResponse response)
{
return super.inject(new PrefixedFormFieldsHttpRequest(prefix, request), response);
}
/**
* Checks to see if the decodedParameters contains any form fields starting with the prefix. Also checks if the value is not empty.
*/
private boolean containsPrefixedFormFieldsWithValue(MultivaluedMap<String, String> decodedFormParameters)
{
for (String parameterName : decodedFormParameters.keySet())
{
if (parameterName.startsWith(prefix))
{
if (hasValue(decodedFormParameters.get(parameterName)))
{
return true;
}
}
}
return false;
}
/**
* Checks that the list has an non empty value.
*/
protected boolean hasValue(List<String> list)
{
return !list.isEmpty() && list.get(0).length() > 0;
}
}