001 /** 002 * ========================================= 003 * LibFormula : a free Java formula library 004 * ========================================= 005 * 006 * Project Info: http://reporting.pentaho.org/libformula/ 007 * 008 * (C) Copyright 2006-2007, by Pentaho Corporation and Contributors. 009 * 010 * This library is free software; you can redistribute it and/or modify it under the terms 011 * of the GNU Lesser General Public License as published by the Free Software Foundation; 012 * either version 2.1 of the License, or (at your option) any later version. 013 * 014 * This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 015 * without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 016 * See the GNU Lesser General Public License for more details. 017 * 018 * You should have received a copy of the GNU Lesser General Public License along with this 019 * library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, 020 * Boston, MA 02111-1307, USA. 021 * 022 * [Java is a trademark or registered trademark of Sun Microsystems, Inc. 023 * in the United States and other countries.] 024 * 025 * 026 * ------------ 027 * $Id: DefaultType.java 3521 2007-10-16 10:55:14Z tmorgner $ 028 * ------------ 029 * (C) Copyright 2006-2007, by Pentaho Corporation. 030 */ 031 package org.jfree.formula.typing; 032 033 import java.util.HashMap; 034 import java.util.HashSet; 035 036 /** 037 * Creation-Date: 02.11.2006, 09:37:54 038 * 039 * @author Thomas Morgner 040 */ 041 public abstract class DefaultType implements Type 042 { 043 private HashSet flags; 044 private HashMap properties; 045 private boolean locked; 046 047 protected DefaultType() 048 { 049 } 050 051 public boolean isLocked() 052 { 053 return locked; 054 } 055 056 public void lock() 057 { 058 this.locked = true; 059 } 060 061 public void addFlag(final String name) 062 { 063 if (locked) 064 { 065 throw new IllegalStateException(); 066 } 067 if (flags == null) 068 { 069 flags = new HashSet(); 070 } 071 flags.add(name); 072 } 073 074 public boolean isFlagSet(final String name) 075 { 076 if (flags == null) 077 { 078 return false; 079 } 080 return flags.contains(name); 081 } 082 083 public void setProperty(final String name, final Object value) 084 { 085 if (locked) 086 { 087 throw new IllegalStateException(); 088 } 089 if (properties == null) 090 { 091 properties = new HashMap(); 092 } 093 properties.put(name, value); 094 } 095 096 public Object getProperty(final String name) 097 { 098 // The type system has no properties yet. This is done later, when we 099 // deal with real meta-data 100 if (properties == null) 101 { 102 return null; 103 } 104 return properties.get(name); 105 } 106 }