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JaxRsServletHolderFactory.java
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/
JaxRsServletHolderFactory.java
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/*
* Copyright (c) 2002-2015 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.server.web;
import com.sun.jersey.api.core.ClassNamesResourceConfig;
import com.sun.jersey.api.core.PackagesResourceConfig;
import com.sun.jersey.api.core.ResourceConfig;
import com.sun.jersey.spi.container.servlet.ServletContainer;
import org.eclipse.jetty.servlet.ServletHolder;
import java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import org.neo4j.server.database.InjectableProvider;
import org.neo4j.server.modules.ServerModule;
import org.neo4j.server.plugins.Injectable;
import org.neo4j.server.rest.web.AllowAjaxFilter;
/**
* Different {@link ServerModule}s can register services at the same mount point.
* So this class will collect all packages/classes per mount point and create the {@link ServletHolder}
* when all modules have registered services, see {@link #create(Collection, boolean)}.
*/
public abstract class JaxRsServletHolderFactory
{
private final List<String> items = new ArrayList<String>();
private final List<Injectable<?>> injectables = new ArrayList<Injectable<?>>();
public void add( List<String> items, Collection<Injectable<?>> injectableProviders )
{
this.items.addAll( items );
if ( injectableProviders != null )
{
this.injectables.addAll( injectableProviders );
}
}
public void remove( List<String> items )
{
this.items.removeAll( items );
}
public ServletHolder create( Collection<InjectableProvider<?>> defaultInjectables, boolean wadlEnabled )
{
Collection<InjectableProvider<?>> injectableProviders = mergeInjectables( defaultInjectables, injectables );
ServletContainer container = new NeoServletContainer( injectableProviders );
ServletHolder servletHolder = new ServletHolder( container );
servletHolder.setInitParameter( ResourceConfig.FEATURE_DISABLE_WADL, String.valueOf( !wadlEnabled ) );
configure( servletHolder, toCommaSeparatedList( items ) );
servletHolder.setInitParameter( ResourceConfig.PROPERTY_CONTAINER_RESPONSE_FILTERS, AllowAjaxFilter.class.getName() );
servletHolder.setInitParameter( ResourceConfig.PROPERTY_CONTAINER_REQUEST_FILTERS, getRequestFilterConfig() );
return servletHolder;
}
private String getRequestFilterConfig()
{
// Ordering of execution of filters goes from left to right
return XForwardFilter.class.getName();
}
protected abstract void configure( ServletHolder servletHolder, String commaSeparatedList );
private Collection<InjectableProvider<?>> mergeInjectables( Collection<InjectableProvider<?>> defaultInjectables,
Collection<Injectable<?>> injectables )
{
Collection<InjectableProvider<?>> injectableProviders = new ArrayList<InjectableProvider<?>>();
if ( defaultInjectables != null )
{
injectableProviders.addAll( defaultInjectables );
}
if ( injectables != null )
{
for ( Injectable<?> injectable : injectables )
{
injectableProviders.add( new InjectableWrapper( injectable ) );
}
}
return injectableProviders;
}
private String toCommaSeparatedList( List<String> packageNames )
{
StringBuilder sb = new StringBuilder();
for ( String str : packageNames )
{
sb.append( str );
sb.append( ", " );
}
String result = sb.toString();
return result.substring( 0, result.length() - 2 );
}
public static class Packages extends JaxRsServletHolderFactory
{
@Override
protected void configure( ServletHolder servletHolder, String packages )
{
servletHolder.setInitParameter( PackagesResourceConfig.PROPERTY_PACKAGES, packages );
}
}
public static class Classes extends JaxRsServletHolderFactory
{
@Override
protected void configure( ServletHolder servletHolder, String classes )
{
servletHolder.setInitParameter( ClassNamesResourceConfig.PROPERTY_CLASSNAMES, classes );
}
}
}