Here you can find the source of getEnumAttribute(String name, Object value)
EnumSyntax based attribute with the given IPP name and the given value (Enums maybe int or String based).
| Parameter | Description |
|---|---|
| name | the attribute name of the subclass. |
| value | the integer value of the specific enum. |
public static Attribute getEnumAttribute(String name, Object value)
//package com.java2s; /* IppUtilities.java --/*from ww w . j a va2 s . c o m*/ Copyright (C) 2006 Free Software Foundation, Inc. This file is part of GNU Classpath. GNU Classpath 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 2, or (at your option) any later version. GNU Classpath 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 GNU Classpath; see the file COPYING. If not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. Linking this library statically or dynamically with other modules is making a combined work based on this library. Thus, the terms and conditions of the GNU General Public License cover the whole combination. As a special exception, the copyright holders of this library give you permission to link this library with independent modules to produce an executable, regardless of the license terms of these independent modules, and to copy and distribute the resulting executable under terms of your choice, provided that you also meet, for each linked independent module, the terms and conditions of the license of that module. An independent module is a module which is not derived from or based on this library. If you modify this library, you may extend this exception to your version of the library, but you are not obligated to do so. If you do not wish to do so, delete this exception statement from your version. */ import java.lang.reflect.Field; import java.util.HashMap; import javax.print.attribute.Attribute; import javax.print.attribute.EnumSyntax; public class Main { private static HashMap<String, Class<? extends Attribute>> classesByName = new HashMap<String, Class<? extends Attribute>>(); /** * Instantiates an <code>EnumSyntax</code> based attribute with the given IPP * name and the given value (Enums maybe int or String based). * * @param name the attribute name of the subclass. * @param value the integer value of the specific enum. * @return The Attribute (a subclass of EnumSyntax) */ public static Attribute getEnumAttribute(String name, Object value) { Class<?> attrClass = getClass(name); // There might be unknown enums we have no mapped class for if (attrClass == null) return null; try { Field[] fields = attrClass.getDeclaredFields(); for (int i = 0; i < fields.length; i++) { Field field = fields[i]; if (field.getType().equals(attrClass)) { EnumSyntax attr = (EnumSyntax) field.get(null); if (value instanceof Integer && attr.getValue() == ((Integer) value).intValue()) return (Attribute) attr; else if (value instanceof String && attr.toString().equals(value)) return (Attribute) attr; } } } catch (SecurityException e) { // should not happen } catch (IllegalArgumentException e) { // should not happen } catch (IllegalAccessException e) { // should not happen, all fields are public } return null; } /** * Returns the implementing class object for given * attribute name objects. * * @param name the attribute name * @return The <code>Class</code> object. */ public static Class<? extends Attribute> getClass(String name) { return classesByName.get(name); } }