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A bundle project producing JAX-RS RI bundles. The primary artifact is an "all-in-one" OSGi-fied JAX-RS RI bundle (jaxrs-ri.jar). Attached to that are two compressed JAX-RS RI archives. The first archive (jaxrs-ri.zip) consists of binary RI bits and contains the API jar (under "api" directory), RI libraries (under "lib" directory) as well as all external RI dependencies (under "ext" directory). The secondary archive (jaxrs-ri-src.zip) contains buildable JAX-RS RI source bundle and contains the API jar (under "api" directory), RI sources (under "src" directory) as well as all external RI dependencies (under "ext" directory). The second archive also contains "build.xml" ANT script that builds the RI sources. To build the JAX-RS RI simply unzip the archive, cd to the created jaxrs-ri directory and invoke "ant" from the command line.

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 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * http://glassfish.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
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package org.glassfish.jersey.server.internal.inject;

import java.io.UnsupportedEncodingException;
import java.lang.annotation.Annotation;
import java.net.URLDecoder;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;
import java.util.Set;

import javax.ws.rs.Encoded;
import javax.ws.rs.FormParam;
import javax.ws.rs.ProcessingException;
import javax.ws.rs.core.Form;
import javax.ws.rs.core.HttpHeaders;
import javax.ws.rs.core.MediaType;

import javax.inject.Inject;
import javax.inject.Singleton;

import org.glassfish.jersey.internal.inject.ExtractorException;
import org.glassfish.jersey.message.internal.MediaTypes;
import org.glassfish.jersey.message.internal.ReaderWriter;
import org.glassfish.jersey.server.ContainerRequest;
import org.glassfish.jersey.server.ParamException;
import org.glassfish.jersey.server.internal.InternalServerProperties;
import org.glassfish.jersey.server.internal.LocalizationMessages;
import org.glassfish.jersey.server.model.Parameter;

import org.glassfish.hk2.api.ServiceLocator;

/**
 * Value factory provider supporting the {@link FormParam} injection annotation.
 *
 * @author Paul Sandoz
 * @author Marek Potociar (marek.potociar at oracle.com)
 */
@Singleton
final class FormParamValueFactoryProvider extends AbstractValueFactoryProvider {

    /**
     * {@link FormParam} injection resolver.
     */
    @Singleton
    static final class InjectionResolver extends ParamInjectionResolver {

        /**
         * Create new FormParam injection resolver.
         */
        public InjectionResolver() {
            super(FormParamValueFactoryProvider.class);
        }
    }

    private static final class FormParamValueFactory extends AbstractContainerRequestValueFactory {

        private final MultivaluedParameterExtractor extractor;
        private final boolean decode;

        FormParamValueFactory(MultivaluedParameterExtractor extractor, boolean decode) {
            this.extractor = extractor;
            this.decode = decode;
        }

        @Override
        public Object provide() {
            ContainerRequest request = getContainerRequest();

            Form form = getCachedForm(request, decode);

            if (form == null) {
                Form otherForm = getCachedForm(request, !decode);
                if (otherForm != null) {
                    form = switchUrlEncoding(request, otherForm);
                    cacheForm(request, form);
                } else {
                    form = getForm(request);
                    cacheForm(request, form);
                }
            }

            try {
                return extractor.extract(form.asMap());
            } catch (ExtractorException e) {
                throw new ParamException.FormParamException(e.getCause(),
                        extractor.getName(), extractor.getDefaultValueString());
            }
        }

        private Form switchUrlEncoding(final ContainerRequest request, final Form otherForm) {
            final Set>> entries = otherForm.asMap().entrySet();
            Form newForm = new Form();
            for (Map.Entry> entry : entries) {
                final String charsetName = ReaderWriter.getCharset(MediaType.valueOf(
                        request.getHeaderString(HttpHeaders.CONTENT_TYPE))).name();

                String key;
                try {
                    key = decode ? URLDecoder.decode(entry.getKey(), charsetName) : URLEncoder.encode(entry.getKey(),
                            charsetName);

                    for (String value : entry.getValue()) {
                        newForm.asMap().add(key, decode ? URLDecoder.decode(value, charsetName) : URLEncoder.encode(value,
                                charsetName));
                    }

                } catch (UnsupportedEncodingException uee) {
                    throw new ProcessingException(LocalizationMessages.ERROR_UNSUPPORTED_ENCODING(charsetName,
                            extractor.getName()), uee);
                }
            }
            return newForm;
        }

        private void cacheForm(final ContainerRequest request, final Form form) {
            request.setProperty(decode ? InternalServerProperties
                    .FORM_DECODED_PROPERTY : InternalServerProperties.FORM_PROPERTY, form);
        }

        private Form getForm(final ContainerRequest request) {
            return getFormParameters(ensureValidRequest(request));
        }

        private static Form getCachedForm(final ContainerRequest request, boolean decode) {
            return (Form) request.getProperty(decode ? InternalServerProperties
                    .FORM_DECODED_PROPERTY : InternalServerProperties.FORM_PROPERTY);
        }

        private static ContainerRequest ensureValidRequest(final ContainerRequest request) throws IllegalStateException {
            if (request.getMethod().equals("GET")) {
                throw new IllegalStateException(
                        LocalizationMessages.FORM_PARAM_METHOD_ERROR());
            }

            if (!MediaTypes.typeEqual(MediaType.APPLICATION_FORM_URLENCODED_TYPE, request.getMediaType())) {
                throw new IllegalStateException(
                        LocalizationMessages.FORM_PARAM_CONTENT_TYPE_ERROR());
            }
            return request;
        }

        private static final Annotation encodedAnnotation = getEncodedAnnotation();

        private static Annotation getEncodedAnnotation() {
            /**
             * Encoded-annotated class.
             */
            @Encoded
            final class EncodedAnnotationTemp {
            }
            return EncodedAnnotationTemp.class.getAnnotation(Encoded.class);
        }

        private Form getFormParameters(ContainerRequest request) {
            if (MediaTypes.typeEqual(MediaType.APPLICATION_FORM_URLENCODED_TYPE, request.getMediaType())) {
                request.bufferEntity();
                Form form;
                if (decode) {
                    form = request.readEntity(Form.class);
                } else {
                    Annotation[] annotations = new Annotation[1];
                    annotations[0] = encodedAnnotation;
                    form = request.readEntity(Form.class, annotations);
                }

                return (form == null ? new Form() : form);
            } else {
                return new Form();
            }
        }
    }

    /**
     * Injection constructor.
     *
     * @param mpep     extractor provider.
     * @param injector injector.
     */
    @Inject
    public FormParamValueFactoryProvider(MultivaluedParameterExtractorProvider mpep, ServiceLocator injector) {
        super(mpep, injector, Parameter.Source.FORM);
    }

    @Override
    public AbstractContainerRequestValueFactory createValueFactory(Parameter parameter) {
        String parameterName = parameter.getSourceName();

        if (parameterName == null || parameterName.isEmpty()) {
            // Invalid query parameter name
            return null;
        }

        MultivaluedParameterExtractor e = get(parameter);
        if (e == null) {
            return null;
        }
        return new FormParamValueFactory(e, !parameter.isEncoded());
    }
}