org.glassfish.jersey.server.internal.inject.SingleValueExtractor Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jersey-server Show documentation
Show all versions of jersey-server Show documentation
Jersey core server implementation
/*
* Copyright (c) 2010, 2019 Oracle and/or its affiliates. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package org.glassfish.jersey.server.internal.inject;
import javax.ws.rs.ProcessingException;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MultivaluedMap;
import javax.ws.rs.ext.ParamConverter;
import org.glassfish.jersey.internal.inject.ExtractorException;
/**
* Extract value of the parameter using a single parameter value and the underlying
* {@link ParamConverter param converter}.
*
* @param extracted Java type.
* @author Paul Sandoz
* @author Marek Potociar
*/
final class SingleValueExtractor extends AbstractParamValueExtractor implements MultivaluedParameterExtractor {
/**
* Create new single value extractor.
*
* @param converter string value reader.
* @param parameterName string parameter name.
* @param defaultStringValue default string value.
*/
public SingleValueExtractor(final ParamConverter converter, final String parameterName, final String defaultStringValue) {
super(converter, parameterName, defaultStringValue);
}
/**
* {@inheritDoc}
*
* This implementation extracts the value of the parameter applying the underlying
* {@link ParamConverter param converter} to the first value found in the list of potential multiple
* parameter values. Any other values in the multi-value list will be ignored.
*
* @param parameters map of parameters.
* @return extracted single parameter value.
*/
@Override
public T extract(final MultivaluedMap parameters) {
final String value = parameters.getFirst(getName());
try {
return fromString((value == null && isDefaultValueRegistered()) ? getDefaultValueString() : value);
} catch (final WebApplicationException | ProcessingException ex) {
throw ex;
} catch (final IllegalArgumentException ex) {
return defaultValue();
} catch (final Exception ex) {
throw new ExtractorException(ex);
}
}
}