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1: /** 2: * ========================================= 3: * LibFormula : a free Java formula library 4: * ========================================= 5: * 6: * Project Info: http://reporting.pentaho.org/libformula/ 7: * 8: * (C) Copyright 2006-2007, by Pentaho Corporation and Contributors. 9: * 10: * This library is free software; you can redistribute it and/or modify it under the terms 11: * of the GNU Lesser General Public License as published by the Free Software Foundation; 12: * either version 2.1 of the License, or (at your option) any later version. 13: * 14: * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 15: * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 16: * See the GNU Lesser General Public License for more details. 17: * 18: * You should have received a copy of the GNU Lesser General Public License along with this 19: * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, 20: * Boston, MA 02111-1307, USA. 21: * 22: * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 23: * in the United States and other countries.] 24: * 25: * 26: * ------------ 27: * $Id: DefaultType.java 3521 2007-10-16 10:55:14Z tmorgner $ 28: * ------------ 29: * (C) Copyright 2006-2007, by Pentaho Corporation. 30: */ 31: package org.jfree.formula.typing; 32: 33: import java.util.HashMap; 34: import java.util.HashSet; 35: 36: /** 37: * Creation-Date: 02.11.2006, 09:37:54 38: * 39: * @author Thomas Morgner 40: */ 41: public abstract class DefaultType implements Type 42: { 43: private HashSet flags; 44: private HashMap properties; 45: private boolean locked; 46: 47: protected DefaultType() 48: { 49: } 50: 51: public boolean isLocked() 52: { 53: return locked; 54: } 55: 56: public void lock() 57: { 58: this.locked = true; 59: } 60: 61: public void addFlag(final String name) 62: { 63: if (locked) 64: { 65: throw new IllegalStateException(); 66: } 67: if (flags == null) 68: { 69: flags = new HashSet(); 70: } 71: flags.add(name); 72: } 73: 74: public boolean isFlagSet(final String name) 75: { 76: if (flags == null) 77: { 78: return false; 79: } 80: return flags.contains(name); 81: } 82: 83: public void setProperty(final String name, final Object value) 84: { 85: if (locked) 86: { 87: throw new IllegalStateException(); 88: } 89: if (properties == null) 90: { 91: properties = new HashMap(); 92: } 93: properties.put(name, value); 94: } 95: 96: public Object getProperty(final String name) 97: { 98: // The type system has no properties yet. This is done later, when we 99: // deal with real meta-data 100: if (properties == null) 101: { 102: return null; 103: } 104: return properties.get(name); 105: } 106: }