org.directwebremoting.guice.InjectedConfig Maven / Gradle / Ivy

Go to download
Show more of this group Show more artifacts with this name
Show all versions of dwr Show documentation
DWR is easy Ajax for Java. It makes it simple to call Java code directly from Javascript. It gets rid of almost all the boiler plate code between the web browser and your Java code.
The newest version!
/*
 * Copyright 2007 Tim Peierls
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.directwebremoting.guice;

import java.util.Collection;
import java.util.HashSet;
import java.util.List;
import java.util.Set;

import org.directwebremoting.extend.Configurator;
import org.directwebremoting.util.FakeServletConfig;

import com.google.inject.Inject;
import com.google.inject.Injector;
import com.google.inject.Key;

import static org.directwebremoting.guice.ParamName.*;
import static org.directwebremoting.impl.StartupUtil.*;


class InjectedConfig
{
    InjectedConfig(FakeServletConfig config)
    {
        this.config = config;
    }

    void setParameter(ParamName paramName, Object value)
    {
        if (value != null)
        {
            config.setInitParameter(paramName.getName(), value.toString());
        }
    }

    void setClassesInitParameter()
    {
        Set> classes = new HashSet>();
        Injector injector = DwrGuiceUtil.getInjector();
        for (Key key : injector.getBindings().keySet())
        {
            Class atype = key.getAnnotationType();
            if (atype != null && InitParam.class.isAssignableFrom(atype))
            {
                InitParam initParam = InitParam.class.cast(key.getAnnotation());
                ParamName paramName = initParam.value();
                if (paramName == CLASSES)
                {
                    @SuppressWarnings("unchecked")
                    List> classList = (List>) injector.getInstance(key);
                    classes.addAll(classList);
                }
            }
        }
        config.setInitParameter(CLASSES.getName(), classesToString(classes));
    }

    void setParameters()
    {
        setParameter(ALLOW_GET,                       allowGetButMakeForgeryEasier);
        setParameter(CROSS_DOMAIN_SESSION_SECURITY,   crossDomainSessionSecurity);
        setParameter(ALLOW_SCRIPT_TAG_REMOTING,       allowScriptTagRemoting);
        setParameter(DEBUG,                           debug);
        setParameter(SCRIPT_SESSION_TIMEOUT,          scriptSessionTimeout);
        setParameter(MAX_CALL_COUNT,                  maxCallCount);
        setParameter(ACTIVE_REVERSE_AJAX_ENABLED,     activeReverseAjaxEnabled);
        setParameter(MAX_WAIT_AFTER_WRITE,            maxWaitAfterWrite);
        setParameter(STREAMING_ENABLED,               streamingEnabled);
        setParameter(DISCONNECTED_TIME,               disconnectedTime);
        setParameter(POLL_AND_COMET_ENABLED,          pollAndCometEnabled);
        setParameter(MAX_WAITING_THREADS,             maxWaitingThreads);
        setParameter(MAX_POLL_HITS_PER_SECOND,        maxPollHitsPerSecond);
        setParameter(PRE_STREAM_WAIT_TIME,            preStreamWaitTime);
        setParameter(POST_STREAM_WAIT_TIME,           postStreamWaitTime);
        setParameter(IGNORE_LAST_MODIFIED,            ignoreLastModified);
        setParameter(WELCOME_FILES,                   welcomeFiles);
        setParameter(NORMALIZE_INCLUDES_QUERY_STRING, normalizeIncludesQueryString);
        setParameter(OVERRIDE_PATH,                   overridePath);

        if (configurator != null)
        {
            // InternalConfigurator knows how to look up the configurator
            // instance again and delegate to it.
            config.setInitParameter(INIT_CUSTOM_CONFIGURATOR, InternalConfigurator.class.getName());
        }

        setClassesInitParameter();
    }

    @Inject(optional=true) @InitParam(ALLOW_GET)                       Boolean allowGetButMakeForgeryEasier = null;
    @Inject(optional=true) @InitParam(CROSS_DOMAIN_SESSION_SECURITY)   Boolean crossDomainSessionSecurity = null;
    @Inject(optional=true) @InitParam(ALLOW_SCRIPT_TAG_REMOTING)       Boolean allowScriptTagRemoting = null;
    @Inject(optional=true) @InitParam(DEBUG)                           Boolean debug = null;
    @Inject(optional=true) @InitParam(SCRIPT_SESSION_TIMEOUT)          Long    scriptSessionTimeout = null;
    @Inject(optional=true) @InitParam(MAX_CALL_COUNT)                  Integer maxCallCount = null;
    @Inject(optional=true) @InitParam(ACTIVE_REVERSE_AJAX_ENABLED)     Boolean activeReverseAjaxEnabled = null;
    @Inject(optional=true) @InitParam(MAX_WAIT_AFTER_WRITE)            Long    maxWaitAfterWrite = null;
    @Inject(optional=true) @InitParam(STREAMING_ENABLED)               Boolean streamingEnabled = null;
    @Inject(optional=true) @InitParam(DISCONNECTED_TIME)               Long    disconnectedTime = null;
    @Inject(optional=true) @InitParam(POLL_AND_COMET_ENABLED)          Boolean pollAndCometEnabled = null;
    @Inject(optional=true) @InitParam(MAX_WAITING_THREADS)             Integer maxWaitingThreads = null;
    @Inject(optional=true) @InitParam(MAX_POLL_HITS_PER_SECOND)        Integer maxPollHitsPerSecond = null;
    @Inject(optional=true) @InitParam(PRE_STREAM_WAIT_TIME)            Long    preStreamWaitTime = null;
    @Inject(optional=true) @InitParam(POST_STREAM_WAIT_TIME)           Long    postStreamWaitTime = null;
    @Inject(optional=true) @InitParam(IGNORE_LAST_MODIFIED)            Boolean ignoreLastModified = null;
    @Inject(optional=true) @InitParam(WELCOME_FILES)                   String  welcomeFiles = null;
    @Inject(optional=true) @InitParam(NORMALIZE_INCLUDES_QUERY_STRING) Boolean normalizeIncludesQueryString = null;
    @Inject(optional=true) @InitParam(OVERRIDE_PATH)                   String  overridePath = null;

    @Inject(optional=true) Configurator configurator = null;

    private final FakeServletConfig config;


    private static String classesToString(Collection> classes)
    {
        StringBuilder buf = new StringBuilder();
        int count = 0;
        for (Class cls : classes)
        {
            if (count++ > 0)
            {
                buf.append(", ");
            }
            buf.append(cls.getName());
        }
        return buf.toString();
    }
}