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1: /* State.java -- 2: Copyright (C) 2005, 2006 Free Software Foundation, Inc. 3: 4: This file is part of GNU Classpath. 5: 6: GNU Classpath is free software; you can redistribute it and/or modify 7: it under the terms of the GNU General Public License as published by 8: the Free Software Foundation; either version 2, or (at your option) 9: any later version. 10: 11: GNU Classpath is distributed in the hope that it will be useful, but 12: WITHOUT ANY WARRANTY; without even the implied warranty of 13: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14: General Public License for more details. 15: 16: You should have received a copy of the GNU General Public License 17: along with GNU Classpath; see the file COPYING. If not, write to the 18: Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19: 02110-1301 USA. 20: 21: Linking this library statically or dynamically with other modules is 22: making a combined work based on this library. Thus, the terms and 23: conditions of the GNU General Public License cover the whole 24: combination. 25: 26: As a special exception, the copyright holders of this library give you 27: permission to link this library with independent modules to produce an 28: executable, regardless of the license terms of these independent 29: modules, and to copy and distribute the resulting executable under 30: terms of your choice, provided that you also meet, for each linked 31: independent module, the terms and conditions of the license of that 32: module. An independent module is a module which is not derived from 33: or based on this library. If you modify this library, you may extend 34: this exception to your version of the library, but you are not 35: obligated to do so. If you do not wish to do so, delete this 36: exception statement from your version. */ 37: 38: 39: package org.omg.PortableServer.POAManagerPackage; 40: 41: import gnu.CORBA.Minor; 42: 43: import org.omg.CORBA.BAD_OPERATION; 44: import org.omg.CORBA.BAD_PARAM; 45: import org.omg.CORBA.TRANSIENT; 46: import org.omg.CORBA.portable.IDLEntity; 47: 48: import java.io.Serializable; 49: 50: /** 51: * Defines the possible states of the POA manager. 52: * 53: * This enumeration can obtain the following values: 54: * <ul> 55: * <li>ACTIVE When the manager is in the active state, the associated POAs 56: * receive and process requests.</li> 57: * <li>DISCARDING When the manager is in the discarding state, 58: * the associated POAs discard all incoming requests. The sending clients 59: * receive the {@link TRANSIENT} system exception, with standard 60: * minor code 1. This mode is needed for flow control, when the system is 61: * flooded with requests. 62: * </li> 63: * <li>HOLDING When the manager is in the holding state, the associated POAs 64: * queue incoming requests.</li> 65: * <li>INACTIVE This state is entered when the associated POAs are to be 66: * shut down.</li> 67: * </ul> 68: * 69: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org) 70: */ 71: public class State 72: implements Serializable, IDLEntity 73: { 74: /** 75: * Use serialVersionUID (v1.4) for interoperability. 76: */ 77: private static final long serialVersionUID = -2451866258678193271L; 78: 79: /** 80: * The value field for the current instance. 81: */ 82: private final int _value; 83: 84: /** 85: * The possible value of this enumeration (HOLDING). 86: */ 87: public static final int _HOLDING = 0; 88: 89: /** 90: * An instance of State, initialized to HOLDING. 91: */ 92: public static final State HOLDING = new State(_HOLDING); 93: 94: /** 95: * The possible value of this enumeration (ACTIVE). 96: */ 97: public static final int _ACTIVE = 1; 98: 99: /** 100: * An instance of State, initialized to ACTIVE. 101: */ 102: public static final State ACTIVE = new State(_ACTIVE); 103: 104: /** 105: * The possible value of this enumeration (DISCARDING). 106: */ 107: public static final int _DISCARDING = 2; 108: 109: /** 110: * An instance of State, initialized to DISCARDING. 111: */ 112: public static final State DISCARDING = new State(_DISCARDING); 113: 114: /** 115: * The possible value of this enumeration (INACTIVE). 116: */ 117: public static final int _INACTIVE = 3; 118: 119: /** 120: * An instance of State, initialized to INACTIVE. 121: */ 122: public static final State INACTIVE = new State(_INACTIVE); 123: 124: /** 125: * The private array that maps integer codes to the enumeration 126: * values. 127: */ 128: private static final State[] enume = 129: new State[] { HOLDING, ACTIVE, DISCARDING, INACTIVE }; 130: 131: /** 132: * The private array of state names. 133: */ 134: private static final String[] state_names = 135: new String[] { "HOLDING", "ACTIVE", "DISCARDING", "INACTIVE" }; 136: 137: /** 138: * Normally, no new instances are required, so the constructor is protected. 139: */ 140: protected State(int a_value) 141: { 142: _value = a_value; 143: } 144: 145: /** 146: * Returns the State, matching the given integer constant. 147: * 148: * @param code one of _HOLDING, _ACTIVE, _DISCARDING, _INACTIVE. 149: * @return one of HOLDING, ACTIVE, DISCARDING, INACTIVE. 150: * @throws BAD_PARAM if the parameter is not one of the valid values. 151: */ 152: public static State from_int(int code) 153: { 154: try 155: { 156: return enume[code]; 157: } 158: catch (ArrayIndexOutOfBoundsException ex) 159: { 160: BAD_OPERATION bad = new BAD_OPERATION("Invalid state " + code); 161: bad.minor = Minor.Enumeration; 162: throw bad; 163: } 164: } 165: 166: /** 167: * Returns a short string representation. 168: * 169: * @return the name of the current enumeration value. 170: */ 171: public String toString() 172: { 173: return state_names [ _value ]; 174: } 175: 176: /** 177: * Returns the integer code of the enumeration value. 178: * @return one of HOLDING, ACTIVE, DISCARDING, INACTIVE. 179: */ 180: public int value() 181: { 182: return _value; 183: } 184: }