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Support arrays Signed-off-by: Jorge Bescos Gascon <[email protected]>
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core-server/src/main/java/org/glassfish/jersey/server/internal/inject/ArrayExtractor.java
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| /* | ||
| * Copyright (c) 2021 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 | ||
| */ | ||
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| package org.glassfish.jersey.server.internal.inject; | ||
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| import java.lang.reflect.Array; | ||
| import java.util.List; | ||
| import java.util.function.Function; | ||
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| import javax.ws.rs.core.MultivaluedHashMap; | ||
| import javax.ws.rs.core.MultivaluedMap; | ||
| import javax.ws.rs.ext.ParamConverter; | ||
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| /** | ||
| * Extract parameter value as an array. | ||
| * | ||
| */ | ||
| class ArrayExtractor implements MultivaluedParameterExtractor<Object> { | ||
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| private final String parameterName; | ||
| private final String defaultValueString; | ||
| private final Function<String, Object> typeExtractor; | ||
| private final Class<?> type; | ||
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| private ArrayExtractor(Class<?> type, Function<String, Object> typeExtractor, | ||
| String parameterName, String defaultValueString) { | ||
| this.type = type; | ||
| this.typeExtractor = typeExtractor; | ||
| this.parameterName = parameterName; | ||
| this.defaultValueString = defaultValueString; | ||
| } | ||
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| @Override | ||
| public String getName() { | ||
| return parameterName; | ||
| } | ||
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| @Override | ||
| public String getDefaultValueString() { | ||
| return defaultValueString; | ||
| } | ||
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| @Override | ||
| public Object extract(MultivaluedMap<String, String> parameters) { | ||
| List<String> stringList = parameters.get(getName()); | ||
| Object array = null; | ||
| if (stringList != null) { | ||
| array = Array.newInstance(type, stringList.size()); | ||
| for (int i = 0; i < stringList.size(); i++) { | ||
| Array.set(array, i, typeExtractor.apply(stringList.get(i))); | ||
| } | ||
| } else if (defaultValueString != null) { | ||
| array = Array.newInstance(type, 1); | ||
| Array.set(array, 0, typeExtractor.apply(defaultValueString)); | ||
| } else { | ||
| array = Array.newInstance(type, 0); | ||
| } | ||
| return array; | ||
| } | ||
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| /** | ||
| * Get array extractor instance supporting. | ||
| * | ||
| * @param type the type class to manage runtime generic. | ||
| * @param converter the converter of the type. | ||
| * @param parameterName extracted parameter name. | ||
| * @param defaultValueString default parameter value. | ||
| * @return string array extractor instance. | ||
| */ | ||
| public static MultivaluedParameterExtractor<Object> getInstance(Class<?> type, | ||
| ParamConverter<?> converter, String parameterName, String defaultValueString) { | ||
| Function<String, Object> typeExtractor = value -> converter.fromString(value); | ||
| return new ArrayExtractor(type, typeExtractor, parameterName, defaultValueString); | ||
| } | ||
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| /** | ||
| * Get array extractor instance supporting. | ||
| * | ||
| * @param type the type class to manage runtime generic. | ||
| * @param extractor the extractor. | ||
| * @param parameterName extracted parameter name. | ||
| * @param defaultValueString default parameter value. | ||
| * @return string array extractor instance. | ||
| */ | ||
| public static MultivaluedParameterExtractor<Object> getInstance(Class<?> type, | ||
| MultivaluedParameterExtractor<?> extractor, | ||
| String parameterName, | ||
| String defaultValueString) { | ||
| Function<String, Object> typeExtractor = value -> { | ||
| MultivaluedMap<String, String> pair = new MultivaluedHashMap<>(); | ||
| pair.putSingle(parameterName, value); | ||
| return extractor.extract(pair); | ||
| }; | ||
| return new ArrayExtractor(type, typeExtractor, parameterName, defaultValueString); | ||
| } | ||
| } |
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